chore: sync main branch with develop (monorepo rename)

server/src/main/java/com/onixbyte/ahsarahguide/AhsarahGuideApplication.java

@@ -0,0 +1,20 @@
+package com.onixbyte.ahsarahguide;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.scheduling.annotation.EnableAsync;
+
+/**
+ * Entry point for the Ahsarah Guide Server application.
+ *
+ * @author zihluwang
+ */
+@EnableAsync
+@SpringBootApplication
+public class AhsarahGuideApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(AhsarahGuideApplication.class, args);
+    }
+
+}

server/src/main/java/com/onixbyte/ahsarahguide/client/EmailClient.java

@@ -0,0 +1,109 @@
+package com.onixbyte.ahsarahguide.client;
+
+import jakarta.mail.MessagingException;
+import jakarta.mail.internet.InternetAddress;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Component;
+import org.thymeleaf.TemplateEngine;
+import org.thymeleaf.context.Context;
+
+import java.io.UnsupportedEncodingException;
+import java.nio.charset.StandardCharsets;
+import java.util.Map;
+
+@Component
+public class EmailClient {
+
+    private static final Logger log = LoggerFactory.getLogger(EmailClient.class);
+
+    private final JavaMailSender mailSender;
+
+    private final TemplateEngine emailTemplateEngine;
+
+    @Autowired
+    public EmailClient(
+            JavaMailSender mailSender,
+            TemplateEngine emailTemplateEngine
+    ) {
+        this.mailSender = mailSender;
+        this.emailTemplateEngine = emailTemplateEngine;
+    }
+
+    private String fromAddress;
+
+    @Autowired
+    public void setFromAddress(@Value("${spring.mail.username}") String fromAddress) {
+        this.fromAddress = fromAddress;
+    }
+
+    /**
+     * Send a template-based HTML email asynchronously.
+     *
+     * @param toRecipient  recipient email address
+     * @param subject      subject line
+     * @param templateName template name (without .html extension, under mail-templates/)
+     * @param variables    context variables required by the template
+     */
+    @Async
+    public void sendTemplateMail(String toRecipient, String subject, String templateName, Map<String, Object> variables) {
+        try {
+            // Render HTML content using the dedicated email template engine
+            var context = new Context();
+            if (variables != null && !variables.isEmpty()) {
+                context.setVariables(variables);
+            }
+            var htmlBody = emailTemplateEngine.process(templateName, context);
+
+            log.debug("htmlBody={}", htmlBody);
+
+            // Build the MIME message
+            var message = mailSender.createMimeMessage();
+            var helper = new MimeMessageHelper(
+                    message,
+                    MimeMessageHelper.MULTIPART_MODE_MIXED_RELATED,
+                    StandardCharsets.UTF_8.name()
+            );
+
+            helper.setFrom(new InternetAddress(fromAddress, "阿萨拉向导", StandardCharsets.UTF_8.name()));
+            helper.setTo(toRecipient);
+            helper.setSubject(subject);
+            helper.setText(htmlBody, true);
+
+            // Dispatch the message
+            mailSender.send(message);
+            log.info("Successfully dispatched email to: [{}] with subject: [{}]", toRecipient, subject);
+
+        } catch (MessagingException | UnsupportedEncodingException ex) {
+            log.error("Failed to construct or send email to: [{}], subject: [{}]", toRecipient, subject, ex);
+            // Handle or rethrow custom business exception if required
+        } catch (Exception ex) {
+            log.error("Unexpected error occurred while processing email for: [{}]", toRecipient, ex);
+        }
+    }
+
+    /**
+     * Convenience method specifically for sending registration/login verification codes.
+     *
+     * @param toRecipient   target recipient email
+     * @param username      display username
+     * @param code          verification code string
+     * @param expireMinutes expiration time in minutes
+     */
+    @Async
+    public void sendVerificationCode(String toRecipient, String username, String code, int expireMinutes) {
+        var subject = "【阿萨拉向导】账号注册验证码";
+        var variables = Map.<String, Object>of(
+                "username", username,
+                "code", code,
+                "expireMinutes", expireMinutes
+        );
+
+        sendTemplateMail(toRecipient, subject, "verification-code", variables);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/client/TokenClient.java

@@ -0,0 +1,75 @@
+package com.onixbyte.ahsarahguide.client;
+
+import com.auth0.jwt.JWT;
+import com.auth0.jwt.JWTVerifier;
+import com.auth0.jwt.algorithms.Algorithm;
+import com.auth0.jwt.interfaces.DecodedJWT;
+import com.onixbyte.ahsarahguide.domain.entity.User;
+import com.onixbyte.ahsarahguide.properties.TokenProperties;
+import com.onixbyte.ahsarahguide.utils.DateTimeUtil;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.time.LocalDateTime;
+
+/**
+ * Client for generating and verifying JSON Web Tokens using the Auth0 java-jwt library.
+ *
+ * @author zihluwang
+ */
+@Component
+public class TokenClient {
+
+    private final Algorithm algorithm;
+    private final TokenProperties tokenProperties;
+    private final JWTVerifier verifier;
+
+    /**
+     * Constructs a new TokenClient with the necessary algorithm and token properties.
+     *
+     * @param algorithm       the signing algorithm used to secure the JWT
+     * @param tokenProperties the configuration properties for the token, such as issuer and
+     *                        validity period
+     */
+    @Autowired
+    public TokenClient(
+            Algorithm algorithm,
+            TokenProperties tokenProperties,
+            JWTVerifier verifier
+    ) {
+        this.algorithm = algorithm;
+        this.tokenProperties = tokenProperties;
+        this.verifier = verifier;
+    }
+
+    /**
+     * Generate a JSON Web Token to the current user.
+     *
+     * @param user the current user for whom the token is being generated
+     * @return a JWT string
+     */
+    public String generateToken(User user) {
+        var issuedAt = LocalDateTime.now();
+        var expiresAt = issuedAt.plus(tokenProperties.validTime());
+
+        return JWT.create()
+                .withSubject(user.getUsername())
+                .withIssuer(tokenProperties.issuer())
+                .withIssuedAt(DateTimeUtil.asInstant(issuedAt))
+                .withExpiresAt(DateTimeUtil.asInstant(expiresAt))
+                .sign(algorithm);
+    }
+
+    /**
+     * Verify and decode token.
+     *
+     * @param token a JWT token
+     * @return information included in the given token
+     * @throws com.auth0.jwt.exceptions.JWTVerificationException if the token is invalid, such as
+     *                                                           expired, or not signed by
+     *                                                           specific server
+     */
+    public DecodedJWT verifyToken(String token) {
+        return verifier.verify(token);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/AppConfig.java

@@ -0,0 +1,48 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.ahsarahguide.interceptor.GitHubWebhookInterceptor;
+import com.onixbyte.ahsarahguide.interceptor.TrafficInterceptor;
+import com.onixbyte.ahsarahguide.properties.AppProperties;
+import com.onixbyte.ahsarahguide.security.resolver.CurrentUserArgumentResolver;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.method.support.HandlerMethodArgumentResolver;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+import java.util.List;
+
+@Configuration
+@EnableConfigurationProperties(AppProperties.class)
+public class AppConfig implements WebMvcConfigurer {
+
+    private final TrafficInterceptor trafficInterceptor;
+
+    private final GitHubWebhookInterceptor gitHubWebhookInterceptor;
+
+    private final CurrentUserArgumentResolver currentUserArgumentResolver;
+
+    @Autowired
+    public AppConfig(
+            TrafficInterceptor trafficInterceptor,
+            GitHubWebhookInterceptor gitHubWebhookInterceptor,
+            CurrentUserArgumentResolver currentUserArgumentResolver
+    ) {
+        this.trafficInterceptor = trafficInterceptor;
+        this.gitHubWebhookInterceptor = gitHubWebhookInterceptor;
+        this.currentUserArgumentResolver = currentUserArgumentResolver;
+    }
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        registry.addInterceptor(trafficInterceptor);
+        registry.addInterceptor(gitHubWebhookInterceptor)
+                .addPathPatterns("/webhooks/github");
+    }
+
+    @Override
+    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> resolvers) {
+        resolvers.add(currentUserArgumentResolver);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/CacheConfig.java

@@ -0,0 +1,102 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.ahsarahguide.shared.JacksonRedisSerialiser;
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.cache.RedisCacheConfiguration;
+import org.springframework.data.redis.cache.RedisCacheManager;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
+import org.springframework.data.redis.serializer.RedisSerializer;
+
+import java.time.Duration;
+
+/**
+ * Configuration class for Redis-based caching components.
+ * <p>
+ * This configuration class provides beans for Redis cache management and template operations
+ * within the Helix application. It configures custom serialisation strategies using
+ * {@link GenericJackson2JsonRedisSerializer} for values and string serialisation for keys,
+ * ensuring optimal performance and compatibility with JSON-based data structures.
+ * <p>
+ * The configuration includes:
+ * <ul>
+ *   <li>Custom {@link RedisCacheManager} with JSON serialisation support</li>
+ *   <li>Configured {@link RedisTemplate} for direct Redis operations</li>
+ * </ul>
+ *
+ * @author zihluwang
+ * @see RedisCacheManager
+ * @see RedisTemplate
+ * @see GenericJackson2JsonRedisSerializer
+ * @since 1.0.0
+ */
+@Configuration
+@EnableCaching
+public class CacheConfig {
+
+    /**
+     * Creates a custom Redis cache manager with JSON serialisation support.
+     * <p>
+     * This method configures a {@link RedisCacheManager} that uses string serialisation for cache
+     * keys and {@link GenericJackson2JsonRedisSerializer} for cache values. This setup ensures that
+     * complex objects can be stored and retrieved from Redis cache whilst maintaining readability
+     * and compatibility with JSON-based systems.
+     *
+     * @param connectionFactory the Redis connection factory used to establish connections
+     * @return a configured {@link RedisCacheManager} with custom serialisation settings
+     * @see RedisCacheManager
+     * @see GenericJackson2JsonRedisSerializer
+     * @see RedisSerializationContext
+     */
+    @Bean
+    public RedisCacheManager cacheManager(
+            RedisConnectionFactory connectionFactory
+    ) {
+        var _keySerializer = RedisSerializer.string();
+
+        var cacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
+                .serializeKeysWith(RedisSerializationContext.SerializationPair
+                        .fromSerializer(_keySerializer))
+                .serializeValuesWith(RedisSerializationContext.SerializationPair
+                        .fromSerializer(JacksonRedisSerialiser.INSTANCE))
+                .entryTtl(Duration.ofMinutes(90L));
+
+        return RedisCacheManager.RedisCacheManagerBuilder
+                .fromConnectionFactory(connectionFactory)
+                .cacheDefaults(cacheConfiguration)
+                .build();
+    }
+
+    /**
+     * Creates a Redis template for direct Redis operations with custom serialisation.
+     * <p>
+     * This method configures a {@link RedisTemplate} that uses string serialisation for keys
+     * and {@link GenericJackson2JsonRedisSerializer} for values. This template provides low-level
+     * access to Redis operations whilst ensuring consistent serialisation strategies across
+     * the application.
+     * <p>
+     * The template is fully configured and ready for use after bean creation.
+     *
+     * @param connectionFactory the Redis connection factory used to establish connections
+     * @return a fully configured {@link RedisTemplate} for Redis operations
+     * @see RedisTemplate
+     * @see GenericJackson2JsonRedisSerializer
+     * @see RedisSerializer
+     */
+    @Bean
+    public RedisTemplate<String, Object> redisTemplate(
+            RedisConnectionFactory connectionFactory
+    ) {
+        var redisTemplate = new RedisTemplate<String, Object>();
+        redisTemplate.setConnectionFactory(connectionFactory);
+        redisTemplate.setKeySerializer(RedisSerializer.string());
+        redisTemplate.setValueSerializer(JacksonRedisSerialiser.INSTANCE);
+        redisTemplate.afterPropertiesSet();
+        return redisTemplate;
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/config/CorsConfig.java

@@ -0,0 +1,49 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.ahsarahguide.properties.CorsProperties;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpMethod;
+import org.springframework.web.cors.CorsConfiguration;
+import org.springframework.web.cors.CorsConfigurationSource;
+import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
+
+import java.util.List;
+import java.util.stream.Stream;
+
+/**
+ * Configuration for CORS (Cross-Origin Resource Sharing) policies.
+ *
+ * @author zihluwang
+ */
+@Configuration
+@EnableConfigurationProperties({CorsProperties.class})
+public class CorsConfig {
+
+    /**
+     * Creates the CORS configuration source with properties from configuration.
+     *
+     * @param properties the CORS configuration properties
+     * @return the CORS configuration source
+     */
+    @Bean
+    public CorsConfigurationSource corsConfigurationSource(
+            CorsProperties properties
+    ) {
+        var corsConfiguration = new CorsConfiguration();
+        corsConfiguration.setAllowCredentials(properties.allowCredentials());
+        corsConfiguration.setAllowedOrigins(List.of(properties.allowedOrigins()));
+        corsConfiguration.setAllowedHeaders(List.of(properties.allowedHeaders()));
+        corsConfiguration.setAllowedMethods(Stream.of(properties.allowedMethods())
+                .map(HttpMethod::name)
+                .toList());
+        corsConfiguration.setMaxAge(properties.maxAge());
+        corsConfiguration.setAllowPrivateNetwork(properties.allowPrivateNetwork());
+        corsConfiguration.setExposedHeaders(List.of(properties.exposedHeaders()));
+
+        var corsConfigurationSource = new UrlBasedCorsConfigurationSource();
+        corsConfigurationSource.registerCorsConfiguration("/**", corsConfiguration);
+        return corsConfigurationSource;
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/EmailTemplateConfig.java

@@ -0,0 +1,37 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.captcha.text.TextProducer;
+import com.onixbyte.captcha.text.impl.DefaultTextProducer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.thymeleaf.TemplateEngine;
+import org.thymeleaf.spring6.SpringTemplateEngine;
+import org.thymeleaf.templatemode.TemplateMode;
+import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver;
+import org.thymeleaf.templateresolver.ITemplateResolver;
+
+import java.nio.charset.StandardCharsets;
+
+@Configuration
+public class EmailTemplateConfig {
+
+    @Bean
+    public TemplateEngine emailTemplateEngine() {
+        var resolver = new ClassLoaderTemplateResolver();
+        // Template files are located under src/main/resources/mail-templates/
+        resolver.setPrefix("mail-templates/");
+        resolver.setSuffix(".html");
+        resolver.setTemplateMode(TemplateMode.HTML);
+        resolver.setCharacterEncoding(StandardCharsets.UTF_8.name());
+        resolver.setCacheable(true); // Enable caching for the production environment
+
+        var templateEngine = new SpringTemplateEngine();
+        templateEngine.addTemplateResolver(resolver);
+        return templateEngine;
+    }
+
+    @Bean
+    public TextProducer textProducer() {
+        return DefaultTextProducer.builder().build();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/FilterConfig.java

@@ -0,0 +1,21 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.ahsarahguide.filter.WebhookFilter;
+import org.springframework.boot.web.servlet.FilterRegistrationBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class FilterConfig {
+
+    @Bean
+    public FilterRegistrationBean<WebhookFilter> webhookFilterBean(WebhookFilter webhookFilter) {
+        var registrationBean = new FilterRegistrationBean<WebhookFilter>();
+
+        registrationBean.setFilter(webhookFilter);
+        registrationBean.addUrlPatterns("/webhooks/*");
+        registrationBean.setOrder(1);
+
+        return registrationBean;
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/JacksonConfig.java

@@ -0,0 +1,25 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.onixbyte.ahsarahguide.shared.JacksonModules;
+import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Configuration for Jackson JSON serialisation and deserialisation settings.
+ *
+ * @author zihluwang
+ */
+@Configuration
+public class JacksonConfig {
+
+    @Bean
+    public Jackson2ObjectMapperBuilderCustomizer jacksonCustomiser() {
+        return (builder) -> {
+            builder.modules(JacksonModules.DATE_TIME_MODULE);
+            builder.featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+        };
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/config/MyBatisConfig.java

@@ -0,0 +1,15 @@
+package com.onixbyte.ahsarahguide.config;
+
+import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Configuration for MyBatis SQL mapping framework integration.
+ *
+ * @author zihluwang
+ */
+@Configuration
+@MapperScan(basePackages = {"com.onixbyte.ahsarahguide.mapper"})
+public class MyBatisConfig {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/config/OpenApiConfiguration.java

@@ -0,0 +1,26 @@
+package com.onixbyte.ahsarahguide.config;
+
+import io.swagger.v3.oas.annotations.OpenAPIDefinition;
+import io.swagger.v3.oas.annotations.info.Contact;
+import io.swagger.v3.oas.annotations.info.Info;
+import io.swagger.v3.oas.annotations.info.License;
+import org.springframework.context.annotation.Configuration;
+
+@OpenAPIDefinition(
+        info = @Info(
+                title = "Ahsarah Guide Server",
+                description = "API for Ahsarah Guide",
+                version = "1.4.0",
+                contact = @Contact(
+                        name = "Zihlu Wang",
+                        email = "zihlu.wang@onixbyte.com"
+                ),
+                license = @License(
+                        name = "MIT",
+                        url = "https://onixbyte.dev/onixbyte/ahsarah-guide/raw/branch/main/LICENCE"
+                )
+        )
+)
+@Configuration
+public class OpenApiConfiguration {
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/SecurityConfig.java

@@ -0,0 +1,113 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.auth0.jwt.JWT;
+import com.auth0.jwt.JWTVerifier;
+import com.auth0.jwt.algorithms.Algorithm;
+import com.onixbyte.ahsarahguide.exeption.ForbiddenException;
+import com.onixbyte.ahsarahguide.exeption.UnauthorisedException;
+import com.onixbyte.ahsarahguide.filter.TokenAuthenticationFilter;
+import com.onixbyte.ahsarahguide.properties.CookieProperties;
+import com.onixbyte.ahsarahguide.properties.TokenProperties;
+import com.onixbyte.ahsarahguide.security.provider.UsernamePasswordAuthenticationProvider;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.authentication.ProviderManager;
+import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
+import org.springframework.security.config.http.SessionCreationPolicy;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.web.SecurityFilterChain;
+import org.springframework.security.web.access.ExceptionTranslationFilter;
+import org.springframework.web.cors.CorsConfigurationSource;
+
+/**
+ * Spring Security configuration defining authentication, authorisation, and filter chains.
+ *
+ * @author zihluwang
+ */
+@Configuration
+@EnableWebSecurity
+@EnableMethodSecurity
+@EnableConfigurationProperties({TokenProperties.class, CookieProperties.class})
+public class SecurityConfig {
+
+    private static final Logger log = LoggerFactory.getLogger(SecurityConfig.class);
+
+    /**
+     * Configures the HTTP security filter chain including endpoint authorisation and JWT filter.
+     *
+     * @param httpSecurity the HTTP security builder
+     * @return the configured security filter chain
+     */
+    @Bean
+    public SecurityFilterChain securityFilterChain(
+            HttpSecurity httpSecurity,
+            CorsConfigurationSource corsConfigurationSource,
+            TokenAuthenticationFilter tokenAuthenticationFilter
+    ) throws Exception {
+        return httpSecurity
+                .cors((cors) -> cors
+                        .configurationSource(corsConfigurationSource))
+                .csrf(AbstractHttpConfigurer::disable)
+                .sessionManagement((customiser) -> customiser
+                        .sessionCreationPolicy(SessionCreationPolicy.STATELESS))
+                .authorizeHttpRequests((customiser) -> customiser
+                        .anyRequest().permitAll()
+                )
+                .exceptionHandling(customiser -> customiser
+                        .authenticationEntryPoint((request, response, authException) -> {
+                            log.error("Unauthenticated request: {}", request, authException);
+                            throw new UnauthorisedException("请先登录");
+                        })
+                        .accessDeniedHandler((request, response, accessDeniedException) -> {
+                            log.error("Denied request: {}", request, accessDeniedException);
+                            throw new ForbiddenException("权限不足");
+                        })
+                )
+                .addFilterAfter(tokenAuthenticationFilter, ExceptionTranslationFilter.class)
+                .build();
+    }
+
+    /**
+     * Provides the BCrypt password encoder for credential hashing.
+     *
+     * @return the BCrypt password encoder
+     */
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+
+    /**
+     * Provides the authentication manager for the security configuration.
+     *
+     * @return the authentication manager
+     */
+    @Bean
+    public AuthenticationManager authenticationManager(
+            UsernamePasswordAuthenticationProvider usernamePasswordAuthenticationProvider
+    ) {
+        return new ProviderManager(
+                usernamePasswordAuthenticationProvider
+        );
+    }
+
+    @Bean
+    public Algorithm algorithm(TokenProperties properties) {
+        return Algorithm.HMAC256(properties.secret());
+    }
+
+    @Bean
+    public JWTVerifier verifier(Algorithm algorithm, TokenProperties tokenProperties) {
+        return JWT.require(algorithm)
+                .withIssuer(tokenProperties.issuer())
+                .build();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/config/SpringDataConfig.java

@@ -0,0 +1,15 @@
+package com.onixbyte.ahsarahguide.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+/**
+ * Configuration for Spring Data JPA auditing and repository settings.
+ *
+ * @author zihluwang
+ */
+@Configuration
+@EnableJpaRepositories(basePackages = {"com.onixbyte.ahsarahguide.repository"})
+public class SpringDataConfig {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/config/WebhookConfig.java

@@ -0,0 +1,10 @@
+package com.onixbyte.ahsarahguide.config;
+
+import com.onixbyte.ahsarahguide.properties.GitHubWebhookProperties;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@EnableConfigurationProperties({GitHubWebhookProperties.class})
+public class WebhookConfig {
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/AdminController.java

@@ -0,0 +1,59 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.ManageRoleRequest;
+import com.onixbyte.ahsarahguide.security.annotation.RequiresAuth;
+import com.onixbyte.ahsarahguide.service.UserService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.Positive;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * REST controller for administrative user and role management.
+ *
+ * @author zihluwang
+ */
+@Tag(name = "管理员", description = "管理员用户与角色管理")
+@RestController
+@RequestMapping("/admin")
+@Validated
+@RequiresAuth
+public class AdminController {
+
+    private final UserService userService;
+
+    public AdminController(UserService userService) {
+        this.userService = userService;
+    }
+
+    @Operation(description = "为用户分配角色（仅超级管理员可操作）")
+    @PreAuthorize("hasRole('SUPER_USER')")
+    @PutMapping("/users/{id}/roles")
+    public ResponseEntity<Void> assignRole(
+            @PathVariable @Positive(message = "用户ID必须为正数") Long id,
+            @Valid @RequestBody ManageRoleRequest request
+    ) {
+        userService.assignRole(id, request.role());
+        return ResponseEntity.noContent().build();
+    }
+
+    @Operation(description = "移除用户角色（仅超级管理员可操作）")
+    @PreAuthorize("hasRole('SUPER_USER')")
+    @DeleteMapping("/users/{id}/roles/{role}")
+    public ResponseEntity<Void> removeRole(
+            @PathVariable @Positive(message = "用户ID必须为正数") Long id,
+            @PathVariable String role
+    ) {
+        userService.removeRole(id, role);
+        return ResponseEntity.noContent().build();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/AuthController.java

@@ -0,0 +1,62 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.*;
+import com.onixbyte.ahsarahguide.security.annotation.RequiresAuth;
+import com.onixbyte.ahsarahguide.service.AuthService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * REST controller for user authentication endpoints (login, logout).
+ *
+ * @author zihluwang
+ */
+@Tag(name = "用户鉴权", description = "处理用户登录与退出功能")
+@RestController
+@RequestMapping("/auth")
+public class AuthController {
+
+    private final AuthService authService;
+
+    public AuthController(AuthService authService) {
+        this.authService = authService;
+    }
+
+    @Operation(description = "用户登录")
+    @PostMapping("/login")
+    public ResponseEntity<UserResponse> login(@Validated @RequestBody LoginRequest request) {
+        var user = authService.login(request);
+        return authService.getUserResponseResponseEntity(user);
+    }
+
+    @RequiresAuth
+    @Operation(description = "退出登录")
+    @PostMapping("/logout")
+    public ResponseEntity<Void> logout() {
+        var expiredCookie = authService.logout();
+        return ResponseEntity.noContent()
+                .header(HttpHeaders.SET_COOKIE, expiredCookie.toString())
+                .build();
+    }
+
+    @Operation(description = "发送邮件验证码")
+    @PostMapping("/verification-code")
+    public SendVerificationCodeResponse sendVerificationCode(@Validated @RequestBody SendVerificationCodeRequest request) {
+        var verificationCodeId = authService.sendVerificationCode(request);
+        return new SendVerificationCodeResponse(verificationCodeId);
+    }
+
+    @Operation(description = "用户注册")
+    @PostMapping("/register")
+    public ResponseEntity<UserResponse> register(@Validated @RequestBody RegisterRequest request) {
+        var user = authService.register(request);
+        return authService.getUserResponseResponseEntity(user);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/DailyPasswordController.java

@@ -0,0 +1,32 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.DailyPasswordResponse;
+import com.onixbyte.ahsarahguide.service.DailyPasswordService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * REST controller for retrieving daily-generated passwords.
+ *
+ * @author zihluwang
+ */
+@Tag(name = "每日密码", description = "获取每日密码信息")
+@RestController
+@RequestMapping("/daily-passwords")
+public class DailyPasswordController {
+
+    private final DailyPasswordService dailyPasswordService;
+
+    public DailyPasswordController(DailyPasswordService dailyPasswordService) {
+        this.dailyPasswordService = dailyPasswordService;
+    }
+
+    @Operation(description = "获取当日的每日密码数据，该数据将被缓存一天")
+    @GetMapping
+    public DailyPasswordResponse getDailyPassword() {
+        return dailyPasswordService.getDailyPassword();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/FirearmController.java

@@ -0,0 +1,72 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.FirearmRequest;
+import com.onixbyte.ahsarahguide.domain.dto.FirearmResponse;
+import com.onixbyte.ahsarahguide.domain.dto.PageResponse;
+import com.onixbyte.ahsarahguide.enumeration.FirearmType;
+import com.onixbyte.ahsarahguide.security.annotation.RequiresAuth;
+import com.onixbyte.ahsarahguide.service.FirearmService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.constraints.Max;
+import jakarta.validation.constraints.Min;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+/**
+ * REST controller for firearm CRUD operations.
+ *
+ * @author zihluwang
+ */
+@Tag(name = "武器管理", description = "与武器有关的操作")
+@RestController
+@RequestMapping("/firearms")
+public class FirearmController {
+
+    private final FirearmService firearmService;
+
+    public FirearmController(FirearmService firearmService) {
+        this.firearmService = firearmService;
+    }
+
+    @Operation(description = "获取分页武器数据")
+    @Validated
+    @GetMapping
+    public PageResponse<FirearmResponse> pageQuery(
+            @RequestParam(defaultValue = "0") @Min(0) int page,
+            @RequestParam(defaultValue = "20") @Min(1) @Max(100) int size,
+            @RequestParam(defaultValue = "id") String sortBy,
+            @RequestParam(defaultValue = "DESC") Sort.Direction direction,
+            @RequestParam(required = false) FirearmType type
+    ) {
+        return firearmService.pageQuery(type, PageRequest.of(page, size, Sort.by(direction, sortBy)));
+    }
+
+    @Operation(description = "获取指定武器的数据")
+    @GetMapping("/{id}")
+    public FirearmResponse queryById(@PathVariable Long id) {
+        return firearmService.queryById(id);
+    }
+
+    @RequiresAuth
+    @PostMapping
+    public FirearmResponse addFirearm(@Validated @RequestBody FirearmRequest request) {
+        return firearmService.addFirearm(request);
+    }
+
+    @RequiresAuth
+    @Operation(description = "更新指定武器的数据")
+    @PutMapping("/{id}")
+    public FirearmResponse updateFirearm(@PathVariable Long id, @Validated @RequestBody FirearmRequest request) {
+        return firearmService.updateFirearm(id, request);
+    }
+
+    @RequiresAuth
+    @Operation(description = "删除指定武器的数据")
+    @DeleteMapping("/{id}")
+    public void deleteFirearm(@PathVariable Long id) {
+        firearmService.deleteFirearm(id);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/GlobalExceptionHandler.java

@@ -0,0 +1,44 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.ErrorResponse;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+import org.springframework.web.server.ResponseStatusException;
+
+/**
+ * Global exception handler that translates exceptions into standard error responses.
+ *
+ * @author zihluwang
+ */
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+    @ExceptionHandler(ResponseStatusException.class)
+    public ResponseEntity<ErrorResponse> handleResponseStatusException(ResponseStatusException exception) {
+        var status = exception.getStatusCode();
+        return ResponseEntity.status(status)
+                .body(new ErrorResponse(exception.getReason()));
+    }
+
+    @ExceptionHandler(AuthenticationException.class)
+    public ResponseEntity<ErrorResponse> handleAuthenticationException(AuthenticationException exception) {
+        return ResponseEntity.status(HttpStatus.UNAUTHORIZED)
+                .body(new ErrorResponse("请先登录"));
+    }
+
+    @ExceptionHandler(AccessDeniedException.class)
+    public ResponseEntity<ErrorResponse> handleAccessDeniedException(AccessDeniedException exception) {
+        var authentication = SecurityContextHolder.getContext().getAuthentication();
+        var httpStatus = authentication == null || !authentication.isAuthenticated()
+                ? HttpStatus.UNAUTHORIZED
+                : HttpStatus.FORBIDDEN;
+        var message = httpStatus == HttpStatus.UNAUTHORIZED ? "请先登录" : "权限不足";
+        return ResponseEntity.status(httpStatus)
+                .body(new ErrorResponse(message));
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/controller/ModificationController.java

@@ -0,0 +1,109 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.ModificationBatchCreateRequest;
+import com.onixbyte.ahsarahguide.domain.dto.ModificationRequest;
+import com.onixbyte.ahsarahguide.domain.dto.ModificationResponse;
+import com.onixbyte.ahsarahguide.domain.dto.PageResponse;
+import com.onixbyte.ahsarahguide.domain.entity.User;
+import com.onixbyte.ahsarahguide.security.annotation.RequiresAuth;
+import com.onixbyte.ahsarahguide.security.resolver.CurrentUser;
+import com.onixbyte.ahsarahguide.service.ModificationService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.Max;
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.Positive;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * REST controller for modification CRUD operations, including batch creation and deletion.
+ *
+ * @author zihluwang
+ */
+@Tag(name = "改装管理", description = "对枪械改装的管理")
+@RestController
+@RequestMapping("/modifications")
+public class ModificationController {
+
+    private final ModificationService modificationService;
+
+    public ModificationController(ModificationService modificationService) {
+        this.modificationService = modificationService;
+    }
+
+    @Operation(description = "分页查询改装信息")
+    @Validated
+    @GetMapping
+    public PageResponse<ModificationResponse> pageQuery(
+            @RequestParam(defaultValue = "0") @Min(0) int page,
+            @RequestParam(defaultValue = "20") @Min(1) @Max(100) int size,
+            @RequestParam(required = false) @Positive Long firearmId,
+            @RequestParam(defaultValue = "id") String sortBy,
+            @RequestParam(defaultValue = "DESC") Sort.Direction direction,
+            @RequestParam(required = false) List<String> tags
+    ) {
+        return modificationService.pageQuery(firearmId, tags, PageRequest.of(page, size, Sort.by(direction, sortBy)));
+    }
+
+    @Operation(description = "查询指定改装的信息")
+    @GetMapping("/{id}")
+    public ModificationResponse queryById(@PathVariable Long id) {
+        return modificationService.queryById(id);
+    }
+
+    @RequiresAuth
+    @Operation(description = "创建改装")
+    @PostMapping
+    public ModificationResponse create(
+            @CurrentUser User user,
+            @Valid @RequestBody ModificationRequest request
+    ) {
+        return modificationService.create(request, user);
+    }
+
+    @RequiresAuth
+    @Operation(description = "批量创建改装")
+    @PostMapping("/batch")
+    public List<ModificationResponse> batchCreate(
+            @CurrentUser User user,
+            @Valid @RequestBody ModificationBatchCreateRequest request
+    ) {
+        return modificationService.batchCreate(request.modifications(), user);
+    }
+
+    @RequiresAuth
+    @Operation(description = "修改指定改装")
+    @PutMapping("/{id}")
+    public ModificationResponse update(@PathVariable Long id, @Valid @RequestBody ModificationRequest request) {
+        return modificationService.update(id, request);
+    }
+
+    @RequiresAuth
+    @Operation(description = "删除指定改装")
+    @DeleteMapping("/{id}")
+    public void delete(@PathVariable Long id) {
+        modificationService.delete(id);
+    }
+
+    @RequiresAuth
+    @Operation(description = "批量删除改装")
+    @DeleteMapping("/batch-delete")
+    @Validated
+    public void batchDelete(@RequestParam List<@Positive Long> ids) {
+        modificationService.batchDelete(ids);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/TagController.java

@@ -0,0 +1,34 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import com.onixbyte.ahsarahguide.service.ModificationService;
+
+import java.util.List;
+
+/**
+ * REST controller for retrieving available modification tags.
+ *
+ * @author zihluwang
+ */
+@Tag(name = "标签管理", description = "管理标签信息")
+@RestController
+@RequestMapping("/tags")
+public class TagController {
+
+    private final ModificationService modificationService;
+
+    public TagController(ModificationService modificationService) {
+        this.modificationService = modificationService;
+    }
+
+    @Operation(description = "查询指定武器或所有武器的标签")
+    @GetMapping
+    public List<String> getTags(@RequestParam(required = false) Long firearmId) {
+        return modificationService.findAllTags(firearmId);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/UserController.java

@@ -0,0 +1,79 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.BuildSummaryResponse;
+import com.onixbyte.ahsarahguide.domain.dto.ChangePasswordRequest;
+import com.onixbyte.ahsarahguide.domain.dto.PageResponse;
+import com.onixbyte.ahsarahguide.domain.dto.UpdateProfileRequest;
+import com.onixbyte.ahsarahguide.domain.dto.UserProfileResponse;
+import com.onixbyte.ahsarahguide.domain.entity.User;
+import com.onixbyte.ahsarahguide.security.annotation.RequiresAuth;
+import com.onixbyte.ahsarahguide.security.resolver.CurrentUser;
+import com.onixbyte.ahsarahguide.service.UserService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.Max;
+import jakarta.validation.constraints.Min;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * REST controller for the current user's profile management endpoints.
+ *
+ * @author zihluwang
+ */
+@Tag(name = "用户个人中心", description = "当前用户的资料管理与密码修改")
+@RestController
+@RequestMapping("/user")
+@Validated
+@RequiresAuth
+public class UserController {
+
+    private final UserService userService;
+
+    public UserController(UserService userService) {
+        this.userService = userService;
+    }
+
+    @Operation(description = "获取当前登录用户的个人资料")
+    @GetMapping("/me")
+    public UserProfileResponse profile(@CurrentUser User user) {
+        return userService.getProfile(user);
+    }
+
+    @Operation(description = "修改当前用户的个人资料（昵称与邮箱）")
+    @PutMapping("/me")
+    public UserProfileResponse updateProfile(
+            @CurrentUser User user,
+            @Valid @RequestBody UpdateProfileRequest request
+    ) {
+        return userService.updateProfile(user, request);
+    }
+
+    @Operation(description = "修改当前用户的登录密码")
+    @PutMapping("/me/password")
+    public ResponseEntity<Void> changePassword(
+            @CurrentUser User user,
+            @Valid @RequestBody ChangePasswordRequest request
+    ) {
+        userService.changePassword(user, request);
+        return ResponseEntity.noContent().build();
+    }
+
+    @Operation(description = "分页查询当前用户的改枪码列表")
+    @GetMapping("/me/builds")
+    public PageResponse<BuildSummaryResponse> builds(
+            @CurrentUser User user,
+            @RequestParam(defaultValue = "0") @Min(0) int page,
+            @RequestParam(defaultValue = "20") @Min(1) @Max(100) int size
+    ) {
+        return userService.getBuilds(user, PageRequest.of(page, size));
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/VersionController.java

@@ -0,0 +1,26 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.service.AppService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@Tag(name = "版本信息")
+@RestController
+@RequestMapping("/versions")
+public class VersionController {
+
+    private final AppService appService;
+
+    public VersionController(AppService appService) {
+        this.appService = appService;
+    }
+
+    @Operation(description = "获取当前应用版本号")
+    @GetMapping
+    public String getVersion() {
+        return appService.getVersion();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/controller/WebhookController.java

@@ -0,0 +1,47 @@
+package com.onixbyte.ahsarahguide.controller;
+
+import com.onixbyte.ahsarahguide.domain.dto.GitHubIssueRequest;
+import com.onixbyte.ahsarahguide.service.WebhookService;
+import com.onixbyte.ahsarahguide.shared.GitHubWebhookHeader;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@Tag(name = "WebHook")
+@RestController
+@RequestMapping("/webhooks")
+public class WebhookController {
+
+    private static final Logger log = LoggerFactory.getLogger(WebhookController.class);
+
+    private final WebhookService webhookService;
+
+    public WebhookController(WebhookService webhookService) {
+        this.webhookService = webhookService;
+    }
+
+    @Operation(description = "GitHub WebHook 接口")
+    @PostMapping("/github")
+    public ResponseEntity<Void> handleWebhook(
+            @RequestHeader(GitHubWebhookHeader.EVENT) String event,
+            @RequestBody GitHubIssueRequest request
+    ) {
+        if (!"issues".equals(event)) {
+            log.debug("Ignoring non-issue event: {}", event);
+            return ResponseEntity.ok().build();
+        }
+        if (!"opened".equals(request.action())) {
+            log.debug("Ignoring issue action: {}", request.action());
+            return ResponseEntity.ok().build();
+        }
+        webhookService.processIssueEvent(request);
+        return ResponseEntity.ok().build();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/converter/FirearmTypeConverter.java

@@ -0,0 +1,26 @@
+package com.onixbyte.ahsarahguide.domain.converter;
+
+import com.onixbyte.ahsarahguide.enumeration.FirearmType;
+import jakarta.persistence.AttributeConverter;
+import jakarta.persistence.Converter;
+
+/**
+ * JPA attribute converter that maps {@link FirearmType} enum to/from its integer database representation.
+ *
+ * @author zihluwang
+ */
+@Converter
+public class FirearmTypeConverter implements AttributeConverter<FirearmType, Integer> {
+
+    @Override
+    public Integer convertToDatabaseColumn(FirearmType attribute) {
+        return attribute == null ? null : attribute.getCode();
+    }
+
+    @Override
+    public FirearmType convertToEntityAttribute(Integer dbData) {
+        return FirearmType.fromCode(dbData);
+    }
+}
+
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/converter/ModificationStatusConverter.java

@@ -0,0 +1,28 @@
+package com.onixbyte.ahsarahguide.domain.converter;
+
+import com.onixbyte.ahsarahguide.enumeration.ModificationStatus;
+import jakarta.persistence.AttributeConverter;
+import jakarta.persistence.Converter;
+
+import java.util.Optional;
+
+/**
+ * JPA attribute converter that maps {@link ModificationStatus} enum to/from its integer database representation.
+ *
+ * @author zihluwang
+ */
+@Converter
+public class ModificationStatusConverter implements AttributeConverter<ModificationStatus, Integer> {
+
+    @Override
+    public Integer convertToDatabaseColumn(ModificationStatus attribute) {
+        return Optional.ofNullable(attribute)
+                .map(ModificationStatus::getCode)
+                .orElse(null);
+    }
+
+    @Override
+    public ModificationStatus convertToEntityAttribute(Integer dbData) {
+        return ModificationStatus.fromCode(dbData);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/AccessoryRequest.java

@@ -0,0 +1,25 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.NotBlank;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Request DTO for creating or updating an accessory attached to a modification.
+ *
+ * @author zihluwang
+ */
+public record AccessoryRequest(
+        @NotBlank(message = "插槽名称不能为空")
+        String slotName,
+        @NotBlank(message = "配件名称不能为空")
+        String accessoryName,
+        List<@Valid TuningRequest> tunings
+) {
+    public List<TuningRequest> tunings() {
+        return tunings == null ? new ArrayList<>() : tunings;
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/AccessoryResponse.java

@@ -0,0 +1,27 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.domain.entity.Accessory;
+
+import java.util.List;
+
+/**
+ * Response DTO for an accessory attached to a modification.
+ *
+ * @author zihluwang
+ */
+public record AccessoryResponse(
+        String slotName,
+        String accessoryName,
+        List<TuningResponse> tunings
+) {
+    public static AccessoryResponse from(Accessory accessory) {
+        return new AccessoryResponse(
+                accessory.getSlotName(),
+                accessory.getAccessoryName(),
+                accessory.getTunings() == null
+                        ? List.of()
+                        : accessory.getTunings().stream().map(TuningResponse::from).toList()
+        );
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/BuildSummaryResponse.java

@@ -0,0 +1,20 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import java.util.List;
+
+/**
+ * Response record summarising a user's custom modification build.
+ * This is a skeleton record whose {@code from()} factory will be fully implemented
+ * when the CustomModification entity is introduced in a future issue.
+ *
+ * @author zihluwang
+ */
+public record BuildSummaryResponse(
+        Long id,
+        String name,
+        String code,
+        String firearmName,
+        List<String> tags
+) {
+    // from() factory to be implemented when CustomModification entity lands
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ChangePasswordRequest.java

@@ -0,0 +1,23 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Pattern;
+import jakarta.validation.constraints.Size;
+
+/**
+ * Request record for changing the current user's password.
+ *
+ * @author zihluwang
+ */
+public record ChangePasswordRequest(
+        @NotBlank(message = "旧密码不能为空")
+        String oldPassword,
+
+        @NotBlank(message = "新密码不能为空")
+        @Size(min = 8, max = 128, message = "密码长度必须在8-128个字符之间")
+        @Pattern(
+                regexp = "^(?=.*[a-z])(?=.*[A-Z])(?=.*\\d).+$",
+                message = "密码必须包含至少一个大写字母、一个小写字母和一个数字"
+        )
+        String newPassword
+) {}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/DailyPassword.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+/**
+ * DTO representing a single daily-generated password for a map.
+ *
+ * @author zihluwang
+ */
+public record DailyPassword(
+        String mapName,
+        String password
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/DailyPasswordData.java

@@ -0,0 +1,19 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+/**
+ * DTO containing daily password data including update information and password list.
+ *
+ * @author zihluwang
+ */
+public record DailyPasswordData(
+        String updateDate,
+        Integer totalCount,
+        List<DailyPassword> passwords,
+        String source,
+        LocalDateTime lastUpdated,
+        Long timestamp
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/DailyPasswordMetadata.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+/**
+ * DTO holding metadata about the daily password source and update tracking.
+ *
+ * @author zihluwang
+ */
+public record DailyPasswordMetadata(
+        String version,
+        String author
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/DailyPasswordResponse.java

@@ -0,0 +1,14 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+/**
+ * Response DTO wrapping daily password data with metadata.
+ *
+ * @author zihluwang
+ */
+public record DailyPasswordResponse(
+        String status,
+        String message,
+        DailyPasswordData data,
+        DailyPasswordMetadata metadata
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/EmailVerificationCode.java

@@ -0,0 +1,8 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+public record EmailVerificationCode(
+        String username,
+        String email,
+        String code
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ErrorResponse.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+/**
+ * Standard error response body returned on API failures.
+ *
+ * @author zihluwang
+ */
+public record ErrorResponse(
+        String message
+) {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/FirearmRequest.java

@@ -0,0 +1,20 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.enumeration.FirearmType;
+
+/**
+ * Request DTO for creating or updating a firearm.
+ *
+ * @author zihluwang
+ */
+public record FirearmRequest(
+        String name,
+        FirearmType type,
+        String level,
+        String calibre,
+        Integer fireRate,
+        Integer armourDamage,
+        Integer bodyDamage,
+        String review
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/FirearmResponse.java

@@ -0,0 +1,36 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.domain.entity.Firearm;
+import com.onixbyte.ahsarahguide.enumeration.FirearmType;
+
+/**
+ * Response DTO for a firearm record, including associated modifications.
+ *
+ * @author zihluwang
+ */
+public record FirearmResponse(
+        Long id,
+        String name,
+        FirearmType type,
+        String level,
+        String calibre,
+        Integer fireRate,
+        Integer armourDamage,
+        Integer bodyDamage,
+        String review
+) {
+    public static FirearmResponse from(Firearm firearm) {
+        return new FirearmResponse(
+                firearm.getId(),
+                firearm.getName(),
+                firearm.getType(),
+                firearm.getLevel(),
+                firearm.getCalibre(),
+                firearm.getFireRate(),
+                firearm.getArmourDamage(),
+                firearm.getBodyDamage(),
+                firearm.getReview()
+        );
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/GitHubIssueRequest.java

@@ -0,0 +1,15 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+
+@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+@JsonIgnoreProperties(ignoreUnknown = true)
+public record GitHubIssueRequest(
+        String action,
+        GitHubWebhookIssue issue,
+        GitHubWebhookRepository repository,
+        GitHubWebhookSender sender
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/GitHubWebhookIssue.java

@@ -0,0 +1,20 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+
+import java.util.List;
+
+@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+@JsonIgnoreProperties(ignoreUnknown = true)
+public record GitHubWebhookIssue(
+        String url,
+        Long id,
+        Long number,
+        String title,
+        String body,
+        List<GitHubWebhookLabel> labels
+) {
+
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/GitHubWebhookLabel.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+
+@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+@JsonIgnoreProperties(ignoreUnknown = true)
+public record GitHubWebhookLabel(
+        String name
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/GitHubWebhookRepository.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+
+@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+@JsonIgnoreProperties(ignoreUnknown = true)
+public record GitHubWebhookRepository(
+        String fullName
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/GitHubWebhookSender.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+
+@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+@JsonIgnoreProperties(ignoreUnknown = true)
+public record GitHubWebhookSender(
+        String login
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/LoginRequest.java

@@ -0,0 +1,20 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.constraints.NotBlank;
+
+/**
+ * Login request containing principle (username/email) and credential (password).
+ *
+ * @author zihluwang
+ */
+@Schema(description = "登录请求")
+public record LoginRequest(
+        @NotBlank(message = "登录名称不能为空")
+        @Schema(description = "用户名或电子邮箱", requiredMode = Schema.RequiredMode.REQUIRED)
+        String principle,
+        @NotBlank(message = "登录口令不能为空")
+        @Schema(description = "密码", requiredMode = Schema.RequiredMode.REQUIRED)
+        String credential
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ManageRoleRequest.java

@@ -0,0 +1,13 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+/**
+ * Request record for managing a user's role assignment.
+ *
+ * @author zihluwang
+ */
+public record ManageRoleRequest(
+        @NotBlank(message = "角色不能为空")
+        String role
+) {}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ModificationBatchCreateRequest.java

@@ -0,0 +1,18 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.NotEmpty;
+
+import java.util.List;
+
+/**
+ * Request DTO for batch creation of modifications.
+ *
+ * @author zihluwang
+ */
+public record ModificationBatchCreateRequest(
+        @NotEmpty(message = "批量创建列表不能为空")
+        List<@Valid ModificationRequest> modifications
+) {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ModificationBatchDeleteRequest.java

@@ -0,0 +1,18 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.constraints.NotEmpty;
+import jakarta.validation.constraints.Positive;
+
+import java.util.List;
+
+/**
+ * Request DTO for batch deletion of modifications by ID.
+ *
+ * @author zihluwang
+ */
+public record ModificationBatchDeleteRequest(
+        @NotEmpty(message = "批量删除ID列表不能为空")
+        List<@Positive(message = "ID必须为正数") Long> ids
+) {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ModificationRequest.java

@@ -0,0 +1,38 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.Positive;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Request DTO for creating or updating a modification.
+ *
+ * @author zihluwang
+ */
+public record ModificationRequest(
+        @NotNull(message = "武器ID不能为空")
+        @Positive(message = "武器ID必须为正数")
+        Long firearmId,
+        @NotBlank(message = "改装名称不能为空")
+        String name,
+        @NotBlank(message = "改装代码不能为空")
+        String code,
+        List<@NotBlank(message = "标签不能为空") String> tags,
+        List<@Valid AccessoryRequest> accessories,
+        String note,
+        String author,
+        String videoUrl
+) {
+    public List<String> tags() {
+        return tags == null ? new ArrayList<>() : tags;
+    }
+
+    public List<AccessoryRequest> accessories() {
+        return accessories == null ? new ArrayList<>() : accessories;
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/ModificationResponse.java

@@ -0,0 +1,39 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.domain.entity.Modification;
+
+import java.util.List;
+
+/**
+ * Response DTO for a modification record including accessories and tags.
+ *
+ * @author zihluwang
+ */
+public record ModificationResponse(
+        Long id,
+        Long firearmId,
+        String name,
+        String code,
+        List<String> tags,
+        List<AccessoryResponse> accessories,
+        String note,
+        String author,
+        String videoUrl
+) {
+    public static ModificationResponse from(Modification modification) {
+        return new ModificationResponse(
+                modification.getId(),
+                modification.getFirearm().getId(),
+                modification.getName(),
+                modification.getCode(),
+                modification.getTags(),
+                modification.getAccessories() == null
+                        ? List.of()
+                        : modification.getAccessories().stream().map(AccessoryResponse::from).toList(),
+                modification.getNote(),
+                modification.getAuthor(),
+                modification.getVideoUrl()
+        );
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/PageResponse.java

@@ -0,0 +1,29 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import org.springframework.data.domain.Page;
+
+import java.util.List;
+
+/**
+ * Generic paginated response wrapper for list endpoints.
+ *
+ * @author zihluwang
+ */
+public record PageResponse<T>(
+        List<T> items,
+        int page,
+        int size,
+        long totalElements,
+        int totalPages
+) {
+    public static <T> PageResponse<T> from(Page<T> source) {
+        return new PageResponse<>(
+                source.getContent(),
+                source.getNumber(),
+                source.getSize(),
+                source.getTotalElements(),
+                source.getTotalPages()
+        );
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/RegisterRequest.java

@@ -0,0 +1,31 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+
+/**
+ * Registration request containing the new user account information.
+ *
+ * @author zihluwang
+ */
+@Schema(description = "注册请求")
+public record RegisterRequest(
+        @NotBlank(message = "用户名不能为空")
+        @Schema(description = "用户名", requiredMode = Schema.RequiredMode.REQUIRED)
+        String username,
+        @NotBlank(message = "邮箱不能为空")
+        @Email(message = "邮箱格式不正确")
+        @Schema(description = "邮箱", requiredMode = Schema.RequiredMode.REQUIRED)
+        String email,
+        @Schema(description = "昵称")
+        String nickname,
+        @Schema(description = "头像链接")
+        String avatarUrl,
+        @NotBlank(message = "密码不能为空")
+        @Schema(description = "密码", requiredMode = Schema.RequiredMode.REQUIRED)
+        String password,
+        @NotBlank(message = "验证码 ID 不能为空") String verificationCodeId,
+        @NotBlank(message = "验证码不能为空") String verificationCode
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/SendVerificationCodeRequest.java

@@ -0,0 +1,9 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record SendVerificationCodeRequest(
+        @NotBlank(message = "用户名不能为空") String username,
+        @NotBlank(message = "电子邮箱地址不能为空") String email
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/SendVerificationCodeResponse.java

@@ -0,0 +1,6 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+public record SendVerificationCodeResponse(
+        String verificationCodeId
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/TuningRequest.java

@@ -0,0 +1,18 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+
+/**
+ * Request DTO for a tuning adjustment on an accessory.
+ *
+ * @author zihluwang
+ */
+public record TuningRequest(
+        @NotBlank(message = "调校项名称不能为空")
+        String tuningName,
+        @NotNull(message = "调校值不能为空")
+        Double tuningValue
+) {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/TuningResponse.java

@@ -0,0 +1,21 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.domain.entity.Tuning;
+
+/**
+ * Response DTO for a tuning adjustment on an accessory.
+ *
+ * @author zihluwang
+ */
+public record TuningResponse(
+        String tuningName,
+        Double tuningValue
+) {
+    public static TuningResponse from(Tuning tuning) {
+        return new TuningResponse(
+                tuning.getTuningName(),
+                tuning.getTuningValue()
+        );
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/UpdateProfileRequest.java

@@ -0,0 +1,14 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.Size;
+
+/**
+ * Request record for updating the current user's profile information.
+ *
+ * @author zihluwang
+ */
+public record UpdateProfileRequest(
+        @Size(min = 1, max = 64, message = "昵称长度必须在1-64个字符之间")
+        String nickname
+) {}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/UserProfileResponse.java

@@ -0,0 +1,44 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.domain.entity.User;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+/**
+ * Response record for the current user's full profile information.
+ *
+ * @author zihluwang
+ */
+public record UserProfileResponse(
+        Long id,
+        String username,
+        String nickname,
+        String email,
+        String avatarUrl,
+        Boolean enabled,
+        LocalDateTime createdAt,
+        List<String> roles
+) {
+
+    /**
+     * Creates a {@code UserProfileResponse} from a {@link User} entity and its assigned roles.
+     *
+     * @param user  the user entity
+     * @param roles the list of role names assigned to the user
+     * @return the constructed response
+     */
+    public static UserProfileResponse from(User user, List<String> roles) {
+        return new UserProfileResponse(
+                user.getId(),
+                user.getUsername(),
+                user.getNickname() == null || user.getNickname().isBlank()
+                        ? user.getUsername() : user.getNickname(),
+                user.getEmail(),
+                user.getAvatarUrl(),
+                user.getEnabled(),
+                user.getCreatedAt(),
+                roles
+        );
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/dto/UserResponse.java

@@ -0,0 +1,26 @@
+package com.onixbyte.ahsarahguide.domain.dto;
+
+import com.onixbyte.ahsarahguide.domain.entity.User;
+
+import java.time.LocalDateTime;
+
+/**
+ * Response DTO for a user account, including associated credentials.
+ *
+ * @author zihluwang
+ */
+public record UserResponse(
+        Long id,
+        String username,
+        String email,
+        LocalDateTime expiration
+) {
+    public static UserResponse from(User user, LocalDateTime expiration) {
+        return new UserResponse(
+                user.getId(),
+                user.getUsername(),
+                user.getEmail(),
+                expiration
+        );
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/Accessory.java

@@ -0,0 +1,72 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * Entity representing an accessory attached to a modification, stored as JSONB.
+ *
+ * @author zihluwang
+ */
+public class Accessory {
+
+    private String slotName;
+
+    private String accessoryName;
+
+    private List<Tuning> tunings = new ArrayList<>();
+
+    public Accessory() {
+    }
+
+    public String getSlotName() {
+        return slotName;
+    }
+
+    public void setSlotName(String slotName) {
+        this.slotName = slotName;
+    }
+
+    public String getAccessoryName() {
+        return accessoryName;
+    }
+
+    public void setAccessoryName(String accessoryName) {
+        this.accessoryName = accessoryName;
+    }
+
+    public List<Tuning> getTunings() {
+        return tunings;
+    }
+
+    public void setTunings(List<Tuning> tunings) {
+        this.tunings = tunings;
+    }
+
+    public void addTuning(Tuning tuning) {
+        this.tunings.add(tuning);
+    }
+
+    public void removeTuning(Tuning tuning) {
+        this.tunings.remove(tuning);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (!(o instanceof Accessory accessory)) {
+            return false;
+        }
+        return Objects.equals(slotName, accessory.slotName)
+                && Objects.equals(accessoryName, accessory.accessoryName)
+                && Objects.equals(tunings, accessory.tunings);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(slotName, accessoryName, tunings);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/Firearm.java

@@ -0,0 +1,232 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import com.onixbyte.ahsarahguide.domain.converter.FirearmTypeConverter;
+import com.onixbyte.ahsarahguide.enumeration.FirearmType;
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Convert;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Entity representing a firearm in the Delta Force game.
+ *
+ * @author zihluwang
+ */
+@Entity
+@Table(name = "firearm")
+public class Firearm {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "name", nullable = false, length = 64)
+    private String name;
+
+    @Column(name = "type", nullable = false)
+    @Convert(converter = FirearmTypeConverter.class)
+    private FirearmType type;
+
+    @Column(name = "level", nullable = false)
+    private String level;
+
+    @Column(name = "review", columnDefinition = "TEXT")
+    private String review;
+
+    @Column(name = "calibre")
+    private String calibre;
+
+    @Column(name = "fire_rate")
+    private Integer fireRate;
+
+    @Column(name = "armour_damage")
+    private Integer armourDamage;
+
+    @Column(name = "body_damage")
+    private Integer bodyDamage;
+
+    @OneToMany(mappedBy = "firearm", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Modification> modifications = new ArrayList<>();
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public FirearmType getType() {
+        return type;
+    }
+
+    public void setType(FirearmType type) {
+        this.type = type;
+    }
+
+    public String getLevel() {
+        return level;
+    }
+
+    public void setLevel(String level) {
+        this.level = level;
+    }
+
+    public String getReview() {
+        return review;
+    }
+
+    public void setReview(String review) {
+        this.review = review;
+    }
+
+    public String getCalibre() {
+        return calibre;
+    }
+
+    public void setCalibre(String calibre) {
+        this.calibre = calibre;
+    }
+
+    public Integer getFireRate() {
+        return fireRate;
+    }
+
+    public void setFireRate(Integer fireRate) {
+        this.fireRate = fireRate;
+    }
+
+    public Integer getArmourDamage() {
+        return armourDamage;
+    }
+
+    public void setArmourDamage(Integer armourDamage) {
+        this.armourDamage = armourDamage;
+    }
+
+    public Integer getBodyDamage() {
+        return bodyDamage;
+    }
+
+    public void setBodyDamage(Integer bodyDamage) {
+        this.bodyDamage = bodyDamage;
+    }
+
+    public List<Modification> getModifications() {
+        return modifications;
+    }
+
+    public void setModifications(List<Modification> modifications) {
+        this.modifications = modifications;
+    }
+
+    public void addModification(Modification modification) {
+        this.modifications.add(modification);
+        modification.setFirearm(this);
+    }
+
+    public void removeModification(Modification modification) {
+        this.modifications.remove(modification);
+        modification.setFirearm(null);
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private Long id;
+        private String name;
+        private FirearmType type;
+        private String level;
+        private String review;
+        private String calibre;
+        private Integer fireRate;
+        private Integer armourDamage;
+        private Integer bodyDamage;
+        private List<Modification> modifications;
+
+        public Builder id(Long id) {
+            this.id = id;
+            return this;
+        }
+
+        public Builder name(String name) {
+            this.name = name;
+            return this;
+        }
+
+        public Builder type(FirearmType type) {
+            this.type = type;
+            return this;
+        }
+
+        public Builder level(String level) {
+            this.level = level;
+            return this;
+        }
+
+        public Builder review(String review) {
+            this.review = review;
+            return this;
+        }
+
+        public Builder calibre(String calibre) {
+            this.calibre = calibre;
+            return this;
+        }
+
+        public Builder fireRate(Integer fireRate) {
+            this.fireRate = fireRate;
+            return this;
+        }
+
+        public Builder armourDamage(Integer armourDamage) {
+            this.armourDamage = armourDamage;
+            return this;
+        }
+
+        public Builder bodyDamage(Integer bodyDamage) {
+            this.bodyDamage = bodyDamage;
+            return this;
+        }
+
+        public Builder modifications(List<Modification> modifications) {
+            this.modifications = modifications;
+            return this;
+        }
+
+        public Firearm build() {
+            Firearm firearm = new Firearm();
+            firearm.id = this.id;
+            firearm.name = this.name;
+            firearm.type = this.type;
+            firearm.level = this.level;
+            firearm.review = this.review;
+            firearm.calibre = this.calibre;
+            firearm.fireRate = this.fireRate;
+            firearm.armourDamage = this.armourDamage;
+            firearm.bodyDamage = this.bodyDamage;
+            firearm.modifications = this.modifications == null ? new ArrayList<>() : this.modifications;
+            return firearm;
+        }
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/Modification.java

@@ -0,0 +1,289 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import com.onixbyte.ahsarahguide.domain.converter.ModificationStatusConverter;
+import com.onixbyte.ahsarahguide.enumeration.ModificationStatus;
+import io.hypersistence.utils.hibernate.type.json.JsonType;
+import jakarta.persistence.*;
+import org.hibernate.annotations.Type;
+
+import java.time.OffsetDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * Entity representing a firearm modification or build configuration.
+ *
+ * @author zihluwang
+ */
+@Entity
+@Table(
+        name = "modification",
+        indexes = {
+                @Index(name = "idx_modification_firearm_id", columnList = "firearm_id")
+        }
+)
+public class Modification {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "firearm_id", nullable = false, foreignKey = @ForeignKey(name = "fk_modification_firearm"))
+    private Firearm firearm;
+
+    @Column(name = "name", nullable = false, length = 64)
+    private String name;
+
+    @Column(name = "code", nullable = false, length = 64)
+    private String code;
+
+    @Type(JsonType.class)
+    @Column(name = "tags", columnDefinition = "jsonb", nullable = false)
+    private List<String> tags = new ArrayList<>();
+
+    @Type(JsonType.class)
+    @Column(name = "accessories", columnDefinition = "jsonb", nullable = false)
+    private List<Accessory> accessories = new ArrayList<>();
+
+    @Column(name = "note", columnDefinition = "TEXT")
+    private String note;
+
+    @Column(name = "author", length = 64)
+    private String author;
+
+    @Column(name = "video_url", length = 512)
+    private String videoUrl;
+
+    @Column(name = "status", nullable = false)
+    @Convert(converter = ModificationStatusConverter.class)
+    private ModificationStatus status = ModificationStatus.DRAFT;
+
+    @Column(name = "create_by")
+    private Long createBy;
+
+    @Column(name = "create_time", nullable = false)
+    private OffsetDateTime createTime;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Firearm getFirearm() {
+        return firearm;
+    }
+
+    public void setFirearm(Firearm firearm) {
+        this.firearm = firearm;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+
+    public List<String> getTags() {
+        return tags;
+    }
+
+    public void setTags(List<String> tags) {
+        this.tags = tags;
+    }
+
+    public List<Accessory> getAccessories() {
+        return accessories;
+    }
+
+    public void setAccessories(List<Accessory> accessories) {
+        this.accessories = accessories;
+    }
+
+    public void addAccessory(Accessory modificationAccessory) {
+        this.accessories.add(modificationAccessory);
+    }
+
+    public void removeAccessory(Accessory modificationAccessory) {
+        this.accessories.remove(modificationAccessory);
+    }
+
+    public String getNote() {
+        return note;
+    }
+
+    public void setNote(String note) {
+        this.note = note;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public String getVideoUrl() {
+        return videoUrl;
+    }
+
+    public void setVideoUrl(String videoUrl) {
+        this.videoUrl = videoUrl;
+    }
+
+    public User getUser() {
+        return user;
+    }
+
+    public void setUser(User user) {
+        this.user = user;
+    }
+
+    public Long getCreateBy() {
+        return createBy;
+    }
+
+    public void setCreateBy(Long createBy) {
+        this.createBy = createBy;
+    }
+
+    public OffsetDateTime getCreateTime() {
+        return createTime;
+    }
+
+    public void setCreateTime(OffsetDateTime createTime) {
+        this.createTime = createTime;
+    }
+
+    public ModificationStatus getStatus() {
+        return status;
+    }
+
+    public void setStatus(ModificationStatus status) {
+        this.status = status;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private Long id;
+        private User user;
+        private Firearm firearm;
+        private String name;
+        private String code;
+        private List<String> tags;
+        private List<Accessory> accessories;
+        private String note;
+        private String author;
+        private String videoUrl;
+        private Long createBy;
+        private OffsetDateTime createTime;
+        private ModificationStatus status;
+
+        public Builder id(Long id) {
+            this.id = id;
+            return this;
+        }
+
+        public Builder user(User user) {
+            this.user = user;
+            return this;
+        }
+
+        public Builder firearm(Firearm firearm) {
+            this.firearm = firearm;
+            return this;
+        }
+
+        public Builder name(String name) {
+            this.name = name;
+            return this;
+        }
+
+        public Builder code(String code) {
+            this.code = code;
+            return this;
+        }
+
+        public Builder tags(List<String> tags) {
+            this.tags = tags;
+            return this;
+        }
+
+        public Builder accessories(List<Accessory> accessories) {
+            this.accessories = accessories;
+            return this;
+        }
+
+        public Builder note(String note) {
+            this.note = note;
+            return this;
+        }
+
+        public Builder author(String author) {
+            this.author = author;
+            return this;
+        }
+
+        public Builder videoUrl(String videoUrl) {
+            this.videoUrl = videoUrl;
+            return this;
+        }
+
+        public Builder createBy(Long createBy) {
+            this.createBy = createBy;
+            return this;
+        }
+
+        public Builder createTime(OffsetDateTime createTime) {
+            this.createTime = createTime;
+            return this;
+        }
+
+        public Builder status(ModificationStatus status) {
+            this.status = status;
+            return this;
+        }
+
+        public Modification build() {
+            Modification modification = new Modification();
+            modification.id = this.id;
+            modification.user = this.user;
+            modification.firearm = this.firearm;
+            modification.name = this.name;
+            modification.code = this.code;
+            modification.tags = Optional.ofNullable(this.tags).orElseGet(ArrayList::new);
+            modification.accessories = Optional.ofNullable(this.accessories).orElseGet(ArrayList::new);
+            modification.note = this.note;
+            modification.author = this.author;
+            modification.videoUrl = this.videoUrl;
+            modification.createBy = this.createBy;
+            modification.createTime = Optional.ofNullable(this.createTime).orElseGet(OffsetDateTime::now);
+            modification.status = Optional.ofNullable(this.status).orElse(ModificationStatus.DRAFT);
+            return modification;
+        }
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/Tuning.java

@@ -0,0 +1,50 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import java.util.Objects;
+
+/**
+ * Entity representing a tuning adjustment for an accessory, stored as JSONB within Accessory.
+ *
+ * @author zihluwang
+ */
+public class Tuning {
+
+    private String tuningName;
+    private Double tuningValue;
+
+    public Tuning() {
+    }
+
+    public String getTuningName() {
+        return tuningName;
+    }
+
+    public void setTuningName(String tuningName) {
+        this.tuningName = tuningName;
+    }
+
+    public Double getTuningValue() {
+        return tuningValue;
+    }
+
+    public void setTuningValue(Double tuningValue) {
+        this.tuningValue = tuningValue;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (!(o instanceof Tuning tuning)) {
+            return false;
+        }
+        return Objects.equals(tuningName, tuning.tuningName)
+                && Objects.equals(tuningValue, tuning.tuningValue);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(tuningName, tuningValue);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/User.java

@@ -0,0 +1,217 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.PreUpdate;
+import jakarta.persistence.Table;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Entity representing an application user with authentication credentials.
+ *
+ * @author zihluwang
+ */
+@Entity
+@Table(name = "app_user")
+public class User {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "username", nullable = false)
+    private String username;
+
+    @Column(name = "email", nullable = false)
+    private String email;
+
+    @Column(name = "nickname")
+    private String nickname;
+
+    @Column(name = "avatar_url")
+    private String avatarUrl;
+
+    @Column(name = "enabled", nullable = false)
+    private Boolean enabled = true;
+
+    @Column(name = "created_at", nullable = false)
+    private LocalDateTime createdAt;
+
+    @Column(name = "updated_at", nullable = false)
+    private LocalDateTime updatedAt;
+
+    @OneToMany(mappedBy = "user", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<UserCredential> credentials = new ArrayList<>();
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getNickname() {
+        return nickname;
+    }
+
+    public void setNickname(String nickname) {
+        this.nickname = nickname;
+    }
+
+    public String getAvatarUrl() {
+        return avatarUrl;
+    }
+
+    public void setAvatarUrl(String avatarUrl) {
+        this.avatarUrl = avatarUrl;
+    }
+
+    public Boolean getEnabled() {
+        return enabled;
+    }
+
+    public void setEnabled(Boolean enabled) {
+        this.enabled = enabled;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(LocalDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+
+    @PreUpdate
+    private void onUpdate() {
+        this.updatedAt = LocalDateTime.now();
+    }
+
+    public List<UserCredential> getCredentials() {
+        return credentials;
+    }
+
+    public void setCredentials(List<UserCredential> credentials) {
+        this.credentials = credentials;
+    }
+
+    public void addCredential(UserCredential credential) {
+        this.credentials.add(credential);
+        credential.setUser(this);
+    }
+
+    public void removeCredential(UserCredential credential) {
+        this.credentials.remove(credential);
+        credential.setUser(null);
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private Long id;
+        private String username;
+        private String email;
+        private String nickname;
+        private String avatarUrl;
+        private Boolean enabled;
+        private LocalDateTime createdAt;
+        private LocalDateTime updatedAt;
+        private List<UserCredential> credentials;
+
+        public Builder id(Long id) {
+            this.id = id;
+            return this;
+        }
+
+        public Builder username(String username) {
+            this.username = username;
+            return this;
+        }
+
+        public Builder email(String email) {
+            this.email = email;
+            return this;
+        }
+
+        public Builder nickname(String nickname) {
+            this.nickname = nickname;
+            return this;
+        }
+
+        public Builder avatarUrl(String avatarUrl) {
+            this.avatarUrl = avatarUrl;
+            return this;
+        }
+
+        public Builder enabled(Boolean enabled) {
+            this.enabled = enabled;
+            return this;
+        }
+
+        public Builder createdAt(LocalDateTime createdAt) {
+            this.createdAt = createdAt;
+            return this;
+        }
+
+        public Builder updatedAt(LocalDateTime updatedAt) {
+            this.updatedAt = updatedAt;
+            return this;
+        }
+
+        public Builder credentials(List<UserCredential> credentials) {
+            this.credentials = credentials;
+            return this;
+        }
+
+        public User build() {
+            User user = new User();
+            user.id = this.id;
+            user.username = this.username;
+            user.email = this.email;
+            user.nickname = this.nickname == null || this.nickname.isBlank()
+                    ? this.username : this.nickname;
+            user.avatarUrl = this.avatarUrl;
+            user.enabled = this.enabled == null || this.enabled;
+            user.createdAt = this.createdAt;
+            user.updatedAt = this.updatedAt;
+            user.credentials = this.credentials == null ? new ArrayList<>() : this.credentials;
+            return user;
+        }
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/UserCredential.java

@@ -0,0 +1,143 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.AttributeOverride;
+import jakarta.persistence.AttributeOverrides;
+import jakarta.persistence.EmbeddedId;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.MapsId;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+
+/**
+ * Entity representing a user credential linked to an authentication provider.
+ *
+ * @author zihluwang
+ */
+@Entity
+@Table(name = "app_user_credential")
+public class UserCredential {
+
+	@EmbeddedId
+	@AttributeOverrides({
+		@AttributeOverride(name = "userId", column = @Column(name = "user_id")),
+		@AttributeOverride(name = "provider", column = @Column(name = "provider"))
+	})
+	private UserCredentialId id = new UserCredentialId();
+
+	@MapsId("userId")
+	@ManyToOne(fetch = FetchType.LAZY, optional = false)
+	@JoinColumn(name = "user_id", nullable = false, foreignKey = @ForeignKey(name = "fk_user_credential_user"))
+	private User user;
+
+	@Column(name = "credential", nullable = false)
+	private String credential;
+
+	public UserCredentialId getId() {
+		return id;
+	}
+
+	public void setId(UserCredentialId id) {
+		this.id = id;
+	}
+
+	public User getUser() {
+		return user;
+	}
+
+	public void setUser(User user) {
+		this.user = user;
+		if (this.id == null) {
+			this.id = new UserCredentialId();
+		}
+		this.id.setUserId(user == null ? null : user.getId());
+	}
+
+	public Long getUserId() {
+		return id == null ? null : id.getUserId();
+	}
+
+	public void setUserId(Long userId) {
+		if (this.id == null) {
+			this.id = new UserCredentialId();
+		}
+		this.id.setUserId(userId);
+	}
+
+	public String getProvider() {
+		return id == null ? null : id.getProvider();
+	}
+
+	public void setProvider(String provider) {
+		if (this.id == null) {
+			this.id = new UserCredentialId();
+		}
+		this.id.setProvider(provider);
+	}
+
+	public String getCredential() {
+		return credential;
+	}
+
+	public void setCredential(String credential) {
+		this.credential = credential;
+	}
+
+	public static Builder builder() {
+		return new Builder();
+	}
+
+	public static class Builder {
+
+		private UserCredentialId id;
+		private User user;
+		private Long userId;
+		private String provider;
+		private String credential;
+
+		public Builder id(UserCredentialId id) {
+			this.id = id;
+			return this;
+		}
+
+		public Builder user(User user) {
+			this.user = user;
+			return this;
+		}
+
+		public Builder userId(Long userId) {
+			this.userId = userId;
+			return this;
+		}
+
+		public Builder provider(String provider) {
+			this.provider = provider;
+			return this;
+		}
+
+		public Builder credential(String credential) {
+			this.credential = credential;
+			return this;
+		}
+
+		public UserCredential build() {
+			UserCredential userCredential = new UserCredential();
+			userCredential.id = this.id == null ? new UserCredentialId() : this.id;
+			userCredential.user = this.user;
+			if (this.user != null) {
+				userCredential.id.setUserId(this.user.getId());
+			}
+			if (this.userId != null) {
+				userCredential.id.setUserId(this.userId);
+			}
+			if (this.provider != null) {
+				userCredential.id.setProvider(this.provider);
+			}
+			userCredential.credential = this.credential;
+			return userCredential;
+		}
+	}
+}

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/UserCredentialId.java

@@ -0,0 +1,81 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import jakarta.persistence.Embeddable;
+
+import java.io.Serializable;
+import java.util.Objects;
+
+/**
+ * Composite key for the UserCredential entity, combining user ID and provider.
+ *
+ * @author zihluwang
+ */
+@Embeddable
+public class UserCredentialId implements Serializable {
+
+    private Long userId;
+
+    private String provider;
+
+    public Long getUserId() {
+        return userId;
+    }
+
+    public void setUserId(Long userId) {
+        this.userId = userId;
+    }
+
+    public String getProvider() {
+        return provider;
+    }
+
+    public void setProvider(String provider) {
+        this.provider = provider;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        UserCredentialId that = (UserCredentialId) o;
+        return Objects.equals(userId, that.userId) && Objects.equals(provider, that.provider);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(userId, provider);
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private Long userId;
+        private String provider;
+
+        public Builder userId(Long userId) {
+            this.userId = userId;
+            return this;
+        }
+
+        public Builder provider(String provider) {
+            this.provider = provider;
+            return this;
+        }
+
+        public UserCredentialId build() {
+            UserCredentialId id = new UserCredentialId();
+            id.userId = this.userId;
+            id.provider = this.provider;
+            return id;
+        }
+    }
+}
+
+

server/src/main/java/com/onixbyte/ahsarahguide/domain/entity/UserRole.java

@@ -0,0 +1,101 @@
+package com.onixbyte.ahsarahguide.domain.entity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.ForeignKey;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.MapsId;
+import jakarta.persistence.Table;
+
+/**
+ * Entity representing a role assignment linking a user to a security role.
+ * <p>
+ * A user owns at most one role assignment, so the user ID is the primary key.
+ *
+ * @author zihluwang
+ */
+@Entity
+@Table(name = "user_role")
+public class UserRole {
+
+    @Id
+    @Column(name = "user_id")
+    private Long userId;
+
+    @MapsId("userId")
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "user_id", nullable = false, foreignKey = @ForeignKey(name = "fk_user_role_user"))
+    private User user;
+
+    @Column(name = "role", nullable = false, length = 32)
+    private String role;
+
+    public Long getUserId() {
+        return userId;
+    }
+
+    public void setUserId(Long userId) {
+        this.userId = userId;
+    }
+
+    public User getUser() {
+        return user;
+    }
+
+    public void setUser(User user) {
+        this.user = user;
+        if (user != null) {
+            this.userId = user.getId();
+        }
+    }
+
+    public String getRole() {
+        return role;
+    }
+
+    public void setRole(String role) {
+        this.role = role;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private User user;
+        private Long userId;
+        private String role;
+
+        public Builder user(User user) {
+            this.user = user;
+            return this;
+        }
+
+        public Builder userId(Long userId) {
+            this.userId = userId;
+            return this;
+        }
+
+        public Builder role(String role) {
+            this.role = role;
+            return this;
+        }
+
+        public UserRole build() {
+            UserRole userRole = new UserRole();
+            userRole.user = this.user;
+            userRole.role = this.role;
+            if (this.user != null) {
+                userRole.userId = this.user.getId();
+            }
+            if (this.userId != null) {
+                userRole.userId = this.userId;
+            }
+            return userRole;
+        }
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/enumeration/FirearmType.java

@@ -0,0 +1,50 @@
+package com.onixbyte.ahsarahguide.enumeration;
+
+/**
+ * Enumeration of firearm types in the Delta Force game.
+ * Each type is associated with an integer code used for database persistence.
+ *
+ * @author zihluwang
+ */
+public enum FirearmType {
+
+    RIFLE(0),
+    SUB_MACHINE_GUN(1),
+    SHOTGUN(2),
+    LIGHT_MACHINE_GUN(3),
+    DESIGNATED_MARKSMAN_RIFLE(4),
+    SNIPER_RIFLE(5),
+    PISTOL(6),
+    SPECIAL(7);
+
+    private final int code;
+
+    FirearmType(int code) {
+        this.code = code;
+    }
+
+    public int getCode() {
+        return code;
+    }
+
+    /**
+     * Resolve a FirearmType from its integer code.
+     *
+      * @param code the integer code, may be null
+     * @return the corresponding FirearmType, or null if the code is null
+     * @throws IllegalArgumentException if the code does not match any known type
+     */
+    public static FirearmType fromCode(Integer code) {
+        if (code == null) {
+            return null;
+        }
+
+        for (FirearmType type : values()) {
+            if (type.code == code) {
+                return type;
+            }
+        }
+
+        throw new IllegalArgumentException("Unknown FirearmType code: " + code);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/enumeration/ModificationStatus.java

@@ -0,0 +1,44 @@
+package com.onixbyte.ahsarahguide.enumeration;
+
+import java.util.Arrays;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+/**
+ * Enumeration of modification statuses.
+ * <p>
+ * Each status is associated with an integer code used for database persistence.
+ *
+ * @author zihluwang
+ */
+public enum ModificationStatus {
+
+    DRAFT(0),
+    PENDING_APPROVAL(1),
+    PUBLISHED(2);
+
+    private final int code;
+
+    ModificationStatus(int code) {
+        this.code = code;
+    }
+
+    public int getCode() {
+        return code;
+    }
+
+    public static final Map<Integer, ModificationStatus> CODE_MAP = Arrays.stream(values())
+            .collect(Collectors.toMap(ModificationStatus::getCode, Function.identity()));
+
+    /**
+     * Resolve a ModificationStatus from its integer code.
+     *
+     * @param code the integer code, may be null
+     * @return the corresponding ModificationStatus, or null if the code is null
+     * @throws IllegalArgumentException if the code does not match any known status
+     */
+    public static ModificationStatus fromCode(Integer code) {
+        return CODE_MAP.get(code);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/exeption/BadRequestException.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.exeption;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class BadRequestException extends ResponseStatusException {
+
+    public BadRequestException(String reason) {
+        super(HttpStatus.BAD_REQUEST, reason);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/exeption/ConflictException.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.exeption;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class ConflictException extends ResponseStatusException {
+
+    public ConflictException(String reason) {
+        super(HttpStatus.CONFLICT, reason);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/exeption/ForbiddenException.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.exeption;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class ForbiddenException extends ResponseStatusException {
+
+    public ForbiddenException(String reason) {
+        super(HttpStatus.FORBIDDEN, reason);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/exeption/InternalServerErrorException.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.exeption;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class InternalServerErrorException extends ResponseStatusException {
+
+    public InternalServerErrorException(String reason) {
+        super(HttpStatus.INTERNAL_SERVER_ERROR, reason);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/exeption/NotFoundException.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.exeption;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class NotFoundException extends ResponseStatusException {
+
+    public NotFoundException(String reason) {
+        super(HttpStatus.NOT_FOUND, reason);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/exeption/UnauthorisedException.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.exeption;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class UnauthorisedException extends ResponseStatusException {
+
+    public UnauthorisedException(String reason) {
+        super(HttpStatus.UNAUTHORIZED, reason);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/filter/TokenAuthenticationFilter.java

@@ -0,0 +1,123 @@
+package com.onixbyte.ahsarahguide.filter;
+
+import com.auth0.jwt.exceptions.JWTVerificationException;
+import com.onixbyte.ahsarahguide.client.TokenClient;
+import com.onixbyte.ahsarahguide.exeption.UnauthorisedException;
+import com.onixbyte.ahsarahguide.manager.CookieManager;
+import com.onixbyte.ahsarahguide.manager.UserManager;
+import com.onixbyte.ahsarahguide.manager.UserRoleManager;
+import com.onixbyte.ahsarahguide.security.authentication.UsernamePasswordAuthentication;
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.Cookie;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.jspecify.annotations.NonNull;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpHeaders;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+import org.springframework.web.server.ResponseStatusException;
+import org.springframework.web.servlet.HandlerExceptionResolver;
+import org.springframework.web.util.WebUtils;
+
+import java.io.IOException;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+/**
+ * Servlet filter that extracts and validates JWT tokens from httpOnly cookies for each request.
+ *
+ * @author zihluwang
+ */
+@Component
+public class TokenAuthenticationFilter extends OncePerRequestFilter {
+
+    private final static Logger log = LoggerFactory.getLogger(TokenAuthenticationFilter.class);
+    private static final Duration ACCESS_TOKEN_RENEW_THRESHOLD = Duration.ofMinutes(5);
+
+    private final UserManager userManager;
+    private final UserRoleManager userRoleManager;
+    private final TokenClient tokenClient;
+    private final CookieManager cookieManager;
+    private final HandlerExceptionResolver handlerExceptionResolver;
+
+    public TokenAuthenticationFilter(
+            UserManager userManager,
+            UserRoleManager userRoleManager,
+            TokenClient tokenClient,
+            CookieManager cookieManager,
+            HandlerExceptionResolver handlerExceptionResolver
+    ) {
+        this.userManager = userManager;
+        this.userRoleManager = userRoleManager;
+        this.tokenClient = tokenClient;
+        this.cookieManager = cookieManager;
+        this.handlerExceptionResolver = handlerExceptionResolver;
+    }
+
+    /**
+     * Extracts JWT from httpOnly cookie, validates it, and sets the security context.
+     *
+     * @param request the HTTP request
+     * @param response the HTTP response
+     * @param filterChain the filter chain
+     */
+    @Override
+    protected void doFilterInternal(
+            @NonNull HttpServletRequest request,
+            @NonNull HttpServletResponse response,
+            @NonNull FilterChain filterChain
+    ) throws ServletException, IOException {
+        var token = Optional.ofNullable(WebUtils.getCookie(request, "AccessToken"))
+                .map(Cookie::getValue)
+                .orElse(null);
+        if (Objects.isNull(token) || token.isBlank()) {
+            filterChain.doFilter(request, response);
+            return;
+        }
+
+        try {
+            var decodedToken = tokenClient.verifyToken(token);
+            var username = decodedToken.getSubject();
+
+            var userWrapper = userManager.findByUsername(username);
+            if (userWrapper.isEmpty()) {
+                throw new UnauthorisedException("登录已过期，请重新登录");
+            }
+
+            var user = userWrapper.get();
+            var roles = userRoleManager.findAllByUserId(user.getId());
+            var authorities = roles.stream()
+                    .map(r -> new SimpleGrantedAuthority(r.getRole()))
+                    .collect(Collectors.toList());
+            var authentication = UsernamePasswordAuthentication.authenticated(user, authorities);
+            SecurityContextHolder.getContext().setAuthentication(authentication);
+
+            if (shouldRenew(decodedToken.getExpiresAt().toInstant())) {
+                var renewedToken = tokenClient.generateToken(user);
+                var renewedTokenCookie = cookieManager.buildCookie("AccessToken", renewedToken);
+                response.addHeader(HttpHeaders.SET_COOKIE, renewedTokenCookie.toString());
+            }
+
+            filterChain.doFilter(request, response);
+        } catch (JWTVerificationException e) {
+            log.error("JWT verification failed.", e);
+            handlerExceptionResolver.resolveException(request, response, null,
+                    new UnauthorisedException("登录已过期，请重新登录"));
+        } catch (ResponseStatusException e) {
+            handlerExceptionResolver.resolveException(request, response, null, e);
+        }
+    }
+
+    private boolean shouldRenew(Instant expiresAt) {
+        return Duration.between(Instant.now(), expiresAt).compareTo(ACCESS_TOKEN_RENEW_THRESHOLD) < 0;
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/filter/WebhookFilter.java

@@ -0,0 +1,22 @@
+package com.onixbyte.ahsarahguide.filter;
+
+import com.onixbyte.ahsarahguide.wrapper.RepeatedlyReadRequestWrapper;
+import jakarta.servlet.*;
+import jakarta.servlet.http.HttpServletRequest;
+import org.springframework.stereotype.Component;
+
+import java.io.IOException;
+
+@Component
+public class WebhookFilter implements Filter {
+    @Override
+    public void doFilter(
+            ServletRequest request,
+            ServletResponse response,
+            FilterChain chain
+    ) throws IOException, ServletException {
+        var httpRequest = (HttpServletRequest) request;
+        var wrappedRequest = new RepeatedlyReadRequestWrapper(httpRequest);
+        chain.doFilter(wrappedRequest, response);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/interceptor/GitHubWebhookInterceptor.java

@@ -0,0 +1,83 @@
+package com.onixbyte.ahsarahguide.interceptor;
+
+import com.onixbyte.crypto.util.CryptoUtil;
+import com.onixbyte.ahsarahguide.exeption.InternalServerErrorException;
+import com.onixbyte.ahsarahguide.exeption.UnauthorisedException;
+import com.onixbyte.ahsarahguide.manager.WebhookManager;
+import com.onixbyte.ahsarahguide.shared.GitHubWebhookHeader;
+import com.onixbyte.ahsarahguide.wrapper.RepeatedlyReadRequestWrapper;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.jspecify.annotations.NonNull;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerInterceptor;
+
+import java.nio.charset.StandardCharsets;
+import java.security.InvalidKeyException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+/**
+ * Verifies GitHub webhook requests by validating the {@code X-Hub-Signature-256}
+ * header against the configured secret using HMAC-SHA256.
+ *
+ * <p>Verification is skipped when no secret is configured. The signature format is
+ * {@code sha256=<hex-digest>} as documented by GitHub.
+ */
+@Component
+public class GitHubWebhookInterceptor implements HandlerInterceptor {
+
+    private static final Logger log = LoggerFactory.getLogger(GitHubWebhookInterceptor.class);
+
+    private final WebhookManager webhookManager;
+
+    public GitHubWebhookInterceptor(WebhookManager webhookManager) {
+        this.webhookManager = webhookManager;
+    }
+
+    @Override
+    public boolean preHandle(
+            @NonNull HttpServletRequest request,
+            @NonNull HttpServletResponse response,
+            @NonNull Object handler
+    ) {
+        if (!(request instanceof RepeatedlyReadRequestWrapper req)) {
+            throw new InternalServerErrorException(
+                    "Request body is not readable");
+        }
+
+        var secret = webhookManager.secret();
+        if (secret == null || secret.isBlank()) {
+            log.debug("No GitHub webhook secret configured, skipping signature verification");
+            return true;
+        }
+
+        var signatureHeader = req.getHeader(GitHubWebhookHeader.SIGNATURE_256);
+        if (signatureHeader == null || signatureHeader.isBlank()) {
+            log.warn("Missing {} header from ip={}",
+                    GitHubWebhookHeader.SIGNATURE_256, request.getRemoteAddr());
+            throw new UnauthorisedException(
+                    "Missing webhook signature header");
+        }
+
+        var body = req.getBodyString();
+        try {
+            var computed = "sha256=" + CryptoUtil.hmacSha256(body, secret);
+
+            if (!MessageDigest.isEqual(
+                    computed.getBytes(StandardCharsets.UTF_8),
+                    signatureHeader.getBytes(StandardCharsets.UTF_8))) {
+                log.warn("Invalid webhook signature from ip={}", request.getRemoteAddr());
+                throw new UnauthorisedException("Invalid webhook signature");
+            }
+
+            return true;
+        } catch (NoSuchAlgorithmException | InvalidKeyException e) {
+            log.error("Failed to compute HMAC-SHA256", e);
+            throw new InternalServerErrorException(
+                    "Failed to verify webhook signature");
+        }
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/interceptor/TrafficInterceptor.java

@@ -0,0 +1,46 @@
+package com.onixbyte.ahsarahguide.interceptor;
+
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.jspecify.annotations.NonNull;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerInterceptor;
+
+@Component
+public class TrafficInterceptor implements HandlerInterceptor {
+
+    private static final Logger log = LoggerFactory.getLogger(TrafficInterceptor.class);
+
+    @Override
+    public boolean preHandle(
+            @NonNull HttpServletRequest request,
+            @NonNull HttpServletResponse response,
+            @NonNull Object handler
+    ) {
+        var ip = resolveClientIp(request);
+        var method = request.getMethod();
+        var uri = request.getRequestURI();
+        var query = request.getQueryString();
+        var contentType = request.getContentType();
+        var contentLength = request.getContentLength();
+        var userAgent = request.getHeader("User-Agent");
+
+        log.debug("Request method={}, uri={}, query={}, ip={}, content-type={}, content-length={}, user-agent={}",
+                method, uri, query, ip, contentType, contentLength, userAgent);
+        return true;
+    }
+
+    private String resolveClientIp(HttpServletRequest request) {
+        var xForwardedFor = request.getHeader("X-Forwarded-For");
+        if (xForwardedFor != null && !xForwardedFor.isBlank()) {
+            return xForwardedFor.split(",")[0].trim();
+        }
+        var xRealIp = request.getHeader("X-Real-IP");
+        if (xRealIp != null && !xRealIp.isBlank()) {
+            return xRealIp.trim();
+        }
+        return request.getRemoteAddr();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/manager/AppManager.java

@@ -0,0 +1,27 @@
+package com.onixbyte.ahsarahguide.manager;
+
+import com.onixbyte.ahsarahguide.properties.AppProperties;
+import org.springframework.stereotype.Component;
+
+@Component
+public class AppManager {
+
+    private final AppProperties appProperties;
+
+    public AppManager(AppProperties appProperties) {
+        this.appProperties = appProperties;
+    }
+
+    /**
+     * Retrieves the application version.
+     *
+     * @return the version string of this application
+     */
+    public String getVersion() {
+        return "v%s-%s by @%s".formatted(
+                appProperties.version(),
+                appProperties.channel(),
+                appProperties.vendor()
+        );
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/manager/CookieManager.java

@@ -0,0 +1,88 @@
+package com.onixbyte.ahsarahguide.manager;
+
+import com.onixbyte.ahsarahguide.properties.CookieProperties;
+import org.springframework.boot.web.server.Cookie;
+import org.springframework.http.ResponseCookie;
+import org.springframework.stereotype.Component;
+
+import java.time.Duration;
+
+/**
+ * Manager providing cookie construction operations with configurable properties.
+ *
+ * @author zihluwang
+ */
+@Component
+public class CookieManager {
+
+    private final CookieProperties cookieProperties;
+
+    public CookieManager(CookieProperties cookieProperties) {
+        this.cookieProperties = cookieProperties;
+    }
+
+    public Boolean getHttpOnly() {
+        return cookieProperties.httpOnly();
+    }
+
+    public Boolean getSecure() {
+        return cookieProperties.secure();
+    }
+
+    public Cookie.SameSite getSameSite() {
+        return cookieProperties.sameSite();
+    }
+
+    public String getPath() {
+        return cookieProperties.path();
+    }
+
+    public Duration getMaxAge() {
+        return cookieProperties.maxAge();
+    }
+
+    /**
+     * Builds a response cookie with the default max age from configuration.
+     *
+     * @param cookieName the cookie name
+     * @param value      the cookie value
+     * @return a configured ResponseCookie
+     */
+    public ResponseCookie buildCookie(String cookieName, String value) {
+        return buildCookieInternal(cookieName, value, getMaxAge());
+    }
+
+    /**
+     * Builds a response cookie with a custom valid duration.
+     *
+     * @param cookieName    the cookie name
+     * @param value         the cookie value
+     * @param validDuration the cookie's max age
+     * @return a configured ResponseCookie
+     */
+    public ResponseCookie buildCookie(String cookieName, String value, Duration validDuration) {
+        return buildCookieInternal(cookieName, value, validDuration);
+    }
+
+    /**
+     * Creates a response cookie builder with specified name, value and valid duration.
+     *
+     * @param name   name of the cookie
+     * @param value  value of the cookie
+     * @param maxAge valid duration of the cookie
+     * @return cookie builder
+     */
+    protected ResponseCookie buildCookieInternal(
+            String name,
+            String value,
+            Duration maxAge
+    ) {
+        return ResponseCookie.from(name, value)
+                .secure(getSecure())
+                .maxAge(maxAge)
+                .httpOnly(getHttpOnly())
+                .path(getPath())
+                .sameSite(getSameSite().attributeValue())
+                .build();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/manager/DailyPasswordManager.java

@@ -0,0 +1,84 @@
+package com.onixbyte.ahsarahguide.manager;
+
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.onixbyte.ahsarahguide.domain.dto.DailyPasswordResponse;
+import com.onixbyte.ahsarahguide.exeption.InternalServerErrorException;
+import com.onixbyte.ahsarahguide.shared.JacksonModules;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
+import org.springframework.stereotype.Component;
+import org.springframework.web.client.RestClient;
+
+import java.time.Duration;
+import java.time.LocalDate;
+import java.util.Objects;
+
+/**
+ * Manager for daily password data access and caching coordination.
+ *
+ * @author zihluwang
+ */
+@Component
+public class DailyPasswordManager {
+
+    private static final String CACHE_KEY_PREFIX = "daily-password:";
+
+    private final RestClient restClient;
+    private final RedisTemplate<String, Object> redisTemplate;
+
+    @Autowired
+    public DailyPasswordManager(
+            RestClient.Builder restClientBuilder,
+            RedisTemplate<String, Object> redisTemplate
+    ) {
+        var snakeCaseMapper = new ObjectMapper();
+        snakeCaseMapper.setPropertyNamingStrategy(
+                PropertyNamingStrategies.SnakeCaseStrategy.INSTANCE);
+        snakeCaseMapper.configure(
+                DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        snakeCaseMapper.registerModule(JacksonModules.DATE_TIME_MODULE);
+
+        this.restClient = restClientBuilder
+                .baseUrl("https://tmini.net/api")
+                .messageConverters(converters -> {
+                    converters.removeIf(
+                            MappingJackson2HttpMessageConverter.class::isInstance);
+                    converters.add(
+                            new MappingJackson2HttpMessageConverter(snakeCaseMapper));
+                })
+                .build();
+        this.redisTemplate = redisTemplate;
+    }
+
+    /**
+     * Retrieves the daily password from cache or generates a new one.
+     * @return the daily password response
+     */
+    public DailyPasswordResponse getDailyPassword() {
+        var key = CACHE_KEY_PREFIX + LocalDate.now();
+
+        var cached = redisTemplate.opsForValue().get(key);
+        if (cached != null) {
+            return (DailyPasswordResponse) cached;
+        }
+
+        var response = restClient.get()
+                .uri((uriBuilder) -> uriBuilder
+                        .path("/sjzmm")
+                        .queryParam("ckey", "")
+                        .queryParam("type", "json")
+                        .build())
+                .retrieve()
+                .body(DailyPasswordResponse.class);
+
+        if (Objects.isNull(response)) {
+            throw new InternalServerErrorException("暂无每日密码数据。");
+        }
+
+        redisTemplate.opsForValue().set(key, response, Duration.ofDays(1L));
+        return response;
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/manager/ModificationManager.java

@@ -0,0 +1,140 @@
+package com.onixbyte.ahsarahguide.manager;
+
+import com.onixbyte.ahsarahguide.domain.entity.Accessory;
+import com.onixbyte.ahsarahguide.domain.entity.Firearm;
+import com.onixbyte.ahsarahguide.domain.entity.Modification;
+import com.onixbyte.ahsarahguide.domain.entity.Tuning;
+import com.onixbyte.ahsarahguide.domain.entity.User;
+import com.onixbyte.ahsarahguide.domain.dto.AccessoryRequest;
+import com.onixbyte.ahsarahguide.domain.dto.ModificationRequest;
+import com.onixbyte.ahsarahguide.domain.dto.ModificationResponse;
+import com.onixbyte.ahsarahguide.domain.dto.TuningRequest;
+import com.onixbyte.ahsarahguide.repository.FirearmRepository;
+import com.onixbyte.ahsarahguide.repository.ModificationRepository;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.domain.Specification;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.server.ResponseStatusException;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Map;
+
+@Component
+public class ModificationManager {
+
+    private final ModificationRepository modificationRepository;
+    private final FirearmRepository firearmRepository;
+
+    public ModificationManager(
+            ModificationRepository modificationRepository,
+            FirearmRepository firearmRepository
+    ) {
+        this.modificationRepository = modificationRepository;
+        this.firearmRepository = firearmRepository;
+    }
+
+    @Transactional
+    public ModificationResponse create(ModificationRequest request, User user) {
+        var firearm = firearmRepository.findById(request.firearmId())
+                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND,
+                        "Firearm not found: " + request.firearmId()));
+        var modification = toEntity(request, firearm, user);
+        return ModificationResponse.from(modificationRepository.save(modification));
+    }
+
+    @Transactional
+    public List<ModificationResponse> batchCreate(List<ModificationRequest> requests, User user) {
+        var firearmIds = requests.stream()
+                .map(ModificationRequest::firearmId)
+                .collect(java.util.stream.Collectors.toCollection(LinkedHashSet::new));
+
+        Map<Long, Firearm> firearmMap = new HashMap<>();
+        firearmRepository.findAllById(firearmIds)
+                .forEach(firearm -> firearmMap.put(firearm.getId(), firearm));
+
+        if (firearmMap.size() != firearmIds.size()) {
+            var missing = firearmIds.stream()
+                    .filter((id) -> !firearmMap.containsKey(id))
+                    .toList();
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND,
+                    "Firearm not found: " + missing);
+        }
+
+        var modifications = requests.stream()
+                .map(req -> toEntity(req, firearmMap.get(req.firearmId()), user))
+                .toList();
+        return modificationRepository.saveAll(modifications)
+                .stream()
+                .map(ModificationResponse::from)
+                .toList();
+    }
+
+    public Long resolveFirearmId(Long firearmId, String firearmName) {
+        if (firearmId != null) {
+            return firearmId;
+        }
+        if (firearmName == null || firearmName.isBlank()) {
+            return null;
+        }
+        var matches = firearmRepository.findByName(firearmName);
+        if (matches.isEmpty()) {
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND,
+                    "Firearm not found by name: " + firearmName);
+        }
+        return matches.getFirst().getId();
+    }
+
+    private Modification toEntity(ModificationRequest request, Firearm firearm, User user) {
+        return Modification.builder()
+                .firearm(firearm)
+                .name(request.name())
+                .code(request.code())
+                .tags(request.tags())
+                .accessories(toAccessories(request.accessories()))
+                .note(request.note())
+                .author(request.author())
+                .videoUrl(request.videoUrl())
+                .createBy(user == null ? null : user.getId())
+                .build();
+    }
+
+    private List<Accessory> toAccessories(List<AccessoryRequest> requests) {
+        if (requests == null) {
+            return new ArrayList<>();
+        }
+        return requests.stream().map(this::toAccessory).toList();
+    }
+
+    private Accessory toAccessory(AccessoryRequest request) {
+        var accessory = new Accessory();
+        accessory.setSlotName(request.slotName());
+        accessory.setAccessoryName(request.accessoryName());
+        accessory.setTunings(toTunings(request.tunings()));
+        return accessory;
+    }
+
+    private List<Tuning> toTunings(List<TuningRequest> requests) {
+        if (requests == null) {
+            return new ArrayList<>();
+        }
+        return requests.stream().map(this::toTuning).toList();
+    }
+
+    private Tuning toTuning(TuningRequest request) {
+        var tuning = new Tuning();
+        tuning.setTuningName(request.tuningName());
+        tuning.setTuningValue(request.tuningValue());
+        return tuning;
+    }
+
+    @Transactional(readOnly = true)
+    public Page<Modification> findBySpec(Specification<Modification> spec, Pageable pageable) {
+        return modificationRepository.findAll(spec, pageable);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/manager/UserCredentialManager.java

@@ -0,0 +1,76 @@
+package com.onixbyte.ahsarahguide.manager;
+
+import com.onixbyte.ahsarahguide.domain.entity.UserCredential;
+import com.onixbyte.ahsarahguide.repository.UserCredentialRepository;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * Manager for user credential persistence and authentication data access.
+ *
+ * @author zihluwang
+ */
+@Component
+public class UserCredentialManager {
+
+    private final UserCredentialRepository userCredentialRepository;
+
+    public UserCredentialManager(UserCredentialRepository userCredentialRepository) {
+        this.userCredentialRepository = userCredentialRepository;
+    }
+
+    /**
+     * Finds all credentials belonging to a specific user.
+     *
+     * @param userId the user ID
+     * @return list of matching credentials
+     */
+    public List<UserCredential> findAllByUserId(Long userId) {
+        return userCredentialRepository.findAllByUserId(userId);
+    }
+
+    /**
+     * Finds a credential for a specific user and provider combination.
+     *
+     * @param userId the user ID
+     * @param provider the authentication provider
+     * @return the matching credential, if found
+     */
+    public Optional<UserCredential> findByUserIdAndProvider(Long userId, String provider) {
+        return userCredentialRepository.findByUserIdAndProvider(userId, provider);
+    }
+
+    /**
+     * Persists a new or updated credential.
+     *
+     * @param userCredential the credential to save
+     * @return the saved credential
+     */
+    public UserCredential save(UserCredential userCredential) {
+        return userCredentialRepository.save(userCredential);
+    }
+
+    /**
+     * Deletes a credential for a specific user and provider.
+     *
+     * @param userId the user ID
+     * @param provider the authentication provider
+     */
+    public void deleteByUserIdAndProvider(Long userId, String provider) {
+        userCredentialRepository.deleteByUserIdAndProvider(userId, provider);
+    }
+
+    /**
+     * Deletes all credentials belonging to a user.
+     *
+     * @param userId the user ID
+     */
+    public void deleteAllByUserId(Long userId) {
+        userCredentialRepository.deleteAllByUserId(userId);
+    }
+}
+
+
+

server/src/main/java/com/onixbyte/ahsarahguide/manager/UserManager.java

@@ -0,0 +1,128 @@
+package com.onixbyte.ahsarahguide.manager;
+
+import com.onixbyte.ahsarahguide.domain.entity.User;
+import com.onixbyte.ahsarahguide.domain.entity.UserRole;
+import com.onixbyte.ahsarahguide.repository.UserRepository;
+import com.onixbyte.ahsarahguide.repository.UserRoleRepository;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * Manager for user entity persistence and query operations.
+ *
+ * @author zihluwang
+ */
+@Component
+public class UserManager {
+
+    private final UserRepository userRepository;
+    private final UserRoleRepository userRoleRepository;
+
+    public UserManager(UserRepository userRepository, UserRoleRepository userRoleRepository) {
+        this.userRepository = userRepository;
+        this.userRoleRepository = userRoleRepository;
+    }
+
+    /**
+     * Finds a user by their ID.
+     *
+     * @param id the user ID
+     * @return the matching user, if found
+     */
+    public Optional<User> findById(Long id) {
+        return userRepository.findById(id);
+    }
+
+    /**
+     * Retrieves all registered users.
+     * @return list of all users
+     */
+    public List<User> findAll() {
+        return userRepository.findAll();
+    }
+
+    /**
+     * Finds a user by their username.
+     *
+     * @param username the username to search for
+     * @return the matching user, if found
+     */
+    public Optional<User> findByUsername(String username) {
+        return userRepository.findByUsername(username);
+    }
+
+    @Transactional(readOnly = true)
+    public Optional<User> findByEmail(String email) {
+        return userRepository.findByEmail(email);
+    }
+
+    /**
+     * Persists a new or updated user.
+     *
+     * @param user the user to save
+     * @return the saved user
+     */
+    public User save(User user) {
+        return userRepository.save(user);
+    }
+
+    /**
+     * Deletes a user by their ID.
+     *
+     * @param id the user ID to delete
+     */
+    public void deleteById(Long id) {
+        userRepository.deleteById(id);
+    }
+
+    /**
+     * Finds a user by their username or email address.
+     *
+     * @param principal the username or email to search for
+     * @return the matching user, if found
+     */
+    public Optional<User> findByUsernameOrEmail(String principal) {
+        return userRepository.findByUsernameOrEmail(principal);
+    }
+
+    /**
+     * Checks whether a username is already registered.
+     *
+     * @param username the username to check
+     * @return true if the username is already taken
+     */
+    public boolean existsByUsername(String username) {
+        return userRepository.existsByUsername(username);
+    }
+
+    /**
+     * Checks whether an email address is already registered.
+     *
+     * @param email the email address to check
+     * @return true if the email address is already taken
+     */
+    public boolean existsByEmail(String email) {
+        return userRepository.existsByEmail(email);
+    }
+
+    /**
+     * Persists a new user together with an initial role assignment in a single transaction.
+     *
+     * @param user the user to persist, whose credentials are cascaded
+     * @param role the initial role name to assign
+     * @return the saved user
+     */
+    @Transactional
+    public User createWithRole(User user, String role) {
+        var saved = userRepository.save(user);
+        userRoleRepository.save(UserRole.builder()
+                .user(saved)
+                .role(role)
+                .build());
+        return saved;
+    }
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/manager/UserRoleManager.java

@@ -0,0 +1,72 @@
+package com.onixbyte.ahsarahguide.manager;
+
+import com.onixbyte.ahsarahguide.domain.entity.UserRole;
+import com.onixbyte.ahsarahguide.repository.UserRoleRepository;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+
+/**
+ * Manager for user role persistence and authorisation data access.
+ *
+ * @author zihluwang
+ */
+@Component
+public class UserRoleManager {
+
+    private final UserRoleRepository userRoleRepository;
+
+    public UserRoleManager(UserRoleRepository userRoleRepository) {
+        this.userRoleRepository = userRoleRepository;
+    }
+
+    /**
+     * Finds all role assignments for a specific user.
+     *
+     * @param userId the user ID
+     * @return list of matching role assignments
+     */
+    public List<UserRole> findAllByUserId(Long userId) {
+        return userRoleRepository.findAllByUserId(userId);
+    }
+
+    /**
+     * Checks whether a user has a specific role.
+     *
+     * @param userId the user ID
+     * @param role   the role name
+     * @return true if the role is assigned, false otherwise
+     */
+    public boolean existsByUserIdAndRole(Long userId, String role) {
+        return userRoleRepository.existsByUserIdAndRole(userId, role);
+    }
+
+    /**
+     * Persists a new role assignment.
+     *
+     * @param userRole the role assignment to save
+     * @return the saved role assignment
+     */
+    public UserRole save(UserRole userRole) {
+        return userRoleRepository.save(userRole);
+    }
+
+    /**
+     * Deletes a role assignment for a specific user and role.
+     *
+     * @param userId the user ID
+     * @param role   the role name
+     */
+    public void deleteByUserIdAndRole(Long userId, String role) {
+        userRoleRepository.deleteByUserIdAndRole(userId, role);
+    }
+
+    /**
+     * Deletes all role assignments belonging to a user.
+     *
+     * @param userId the user ID
+     */
+    public void deleteAllByUserId(Long userId) {
+        userRoleRepository.deleteAllByUserId(userId);
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/manager/WebhookManager.java

@@ -0,0 +1,24 @@
+package com.onixbyte.ahsarahguide.manager;
+
+import com.onixbyte.ahsarahguide.properties.GitHubWebhookProperties;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+
+@Component
+public class WebhookManager {
+
+    private final GitHubWebhookProperties gitHubWebhookProperties;
+
+    public WebhookManager(GitHubWebhookProperties gitHubWebhookProperties) {
+        this.gitHubWebhookProperties = gitHubWebhookProperties;
+    }
+
+    public String secret() {
+        return gitHubWebhookProperties.secret();
+    }
+
+    public List<String> allowedUsers() {
+        return gitHubWebhookProperties.allowedUsers();
+    }
+}

server/src/main/java/com/onixbyte/ahsarahguide/properties/AppProperties.java

@@ -0,0 +1,11 @@
+package com.onixbyte.ahsarahguide.properties;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+@ConfigurationProperties(prefix = "app.common")
+public record AppProperties(
+        String version,
+        String channel,
+        String vendor
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/properties/CookieProperties.java

@@ -0,0 +1,27 @@
+package com.onixbyte.ahsarahguide.properties;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.bind.DefaultValue;
+import org.springframework.boot.web.server.Cookie;
+
+import java.time.Duration;
+
+/**
+ * Configuration properties for HTTP cookies used in authentication, prefixed with "app.cookie".
+ *
+ * @param httpOnly  whether the cookie is httpOnly
+ * @param secure    whether the cookie is secure
+ * @param path      the cookie path
+ * @param maxAge    the maximum age of the cookie
+ * @param sameSite  the SameSite policy for the cookie
+ * @author zihluwang
+ */
+@ConfigurationProperties(prefix = "app.cookie")
+public record CookieProperties(
+        @DefaultValue("true") Boolean httpOnly,
+        @DefaultValue("true") Boolean secure,
+        @DefaultValue("/") String path,
+        @DefaultValue("PT2H") Duration maxAge,
+        @DefaultValue("LAX") Cookie.SameSite sameSite
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/properties/CorsProperties.java

@@ -0,0 +1,36 @@
+package com.onixbyte.ahsarahguide.properties;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.bind.DefaultValue;
+import org.springframework.http.HttpMethod;
+
+import java.time.Duration;
+
+/**
+ * Configuration properties for CORS settings, prefixed with "app.cors".
+ *
+ * @param allowedHeaders      headers allowed in CORS requests
+ * @param allowedMethods      HTTP methods allowed in CORS requests
+ * @param allowedOrigins      origins permitted to make cross-origin requests
+ * @param allowCredentials    whether credentials are allowed in CORS requests
+ * @param allowPrivateNetwork whether private network access is permitted
+ * @param maxAge              how long the CORS preflight response may be cached
+ * @param exposedHeaders      headers exposed to the client in CORS responses
+ * @author zihluwang
+ */
+@ConfigurationProperties(prefix = "app.cors")
+public record CorsProperties(
+        @DefaultValue({"Content-Type", "Authorization"})
+        String[] allowedHeaders,
+        @DefaultValue({"GET", "POST", "PUT", "PATCH", "DELETE"})
+        HttpMethod[] allowedMethods,
+        String[] allowedOrigins,
+        boolean allowCredentials,
+        boolean allowPrivateNetwork,
+        @DefaultValue("PT2H")
+        Duration maxAge,
+        @DefaultValue({"Content-Type", "Authorization"})
+        String[] exposedHeaders
+) {
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/properties/GitHubWebhookProperties.java

@@ -0,0 +1,12 @@
+package com.onixbyte.ahsarahguide.properties;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+import java.util.List;
+
+@ConfigurationProperties(prefix = "app.webhook.github")
+public record GitHubWebhookProperties(
+        String secret,
+        List<String> allowedUsers
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/properties/TokenProperties.java

@@ -0,0 +1,23 @@
+package com.onixbyte.ahsarahguide.properties;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.bind.DefaultValue;
+
+import java.time.Duration;
+
+/**
+ * Configuration properties for JWT token generation and validation, prefixed with "app.jwt".
+ *
+ * @param issuer    the JWT issuer claim
+ * @param secret    the signing secret for JWT tokens
+ * @param validTime the duration for which a token remains valid
+ * @author zihluwang
+ */
+@ConfigurationProperties(prefix = "app.jwt")
+public record TokenProperties(
+        String issuer,
+        String secret,
+        @DefaultValue("PT2H") Duration validTime,
+        @DefaultValue("PT5M") Duration renewThreshold
+) {
+}

server/src/main/java/com/onixbyte/ahsarahguide/repository/FirearmRepository.java

@@ -0,0 +1,25 @@
+package com.onixbyte.ahsarahguide.repository;
+
+import com.onixbyte.ahsarahguide.domain.entity.Firearm;
+import com.onixbyte.ahsarahguide.enumeration.FirearmType;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+/**
+ * Spring Data JPA repository for {@link Firearm} entity operations.
+ *
+ * @author zihluwang
+ */
+@Repository
+public interface FirearmRepository extends JpaRepository<Firearm, Long>, JpaSpecificationExecutor<Firearm> {
+
+	Page<Firearm> findAllByType(FirearmType type, Pageable pageable);
+
+	List<Firearm> findByName(String name);
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/repository/ModificationRepository.java

@@ -0,0 +1,45 @@
+package com.onixbyte.ahsarahguide.repository;
+
+import com.onixbyte.ahsarahguide.domain.entity.Modification;
+import org.jspecify.annotations.NonNull;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.domain.Specification;
+import org.springframework.data.jpa.repository.EntityGraph;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * Spring Data JPA repository for {@link Modification} entity operations,
+ * including JSONB tag filtering for Postgres via the specification API.
+ *
+ * @author zihluwang
+ */
+@Repository
+public interface ModificationRepository extends JpaRepository<Modification, Long>, JpaSpecificationExecutor<Modification> {
+
+    @Override
+    @EntityGraph(attributePaths = {"firearm"})
+    @NonNull
+    Page<Modification> findAll(Specification<Modification> spec, @NonNull Pageable pageable);
+
+    @Override
+    @EntityGraph(attributePaths = {"firearm"})
+    @NonNull
+    Optional<Modification> findById(@NonNull Long id);
+
+    /**
+     * Retrieve all distinct tag values from modifications, optionally filtered by firearm.
+     *
+     * @param firearmId optional firearm ID filter (nullable)
+     * @return list of distinct tag strings
+     */
+    @Query(value = "SELECT DISTINCT jsonb_array_elements_text(cast(tags as jsonb)) FROM modification WHERE (:firearmId IS NULL OR firearm_id = :firearmId)", nativeQuery = true)
+    List<String> findAllTags(@Param("firearmId") Long firearmId);
+}

server/src/main/java/com/onixbyte/ahsarahguide/repository/UserCredentialRepository.java

@@ -0,0 +1,80 @@
+package com.onixbyte.ahsarahguide.repository;
+
+import com.onixbyte.ahsarahguide.domain.entity.UserCredential;
+import com.onixbyte.ahsarahguide.domain.entity.UserCredentialId;
+import org.springframework.data.jpa.repository.*;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * Spring Data JPA repository for {@link UserCredential} entity operations.
+ *
+ * @author zihluwang
+ */
+@Repository
+public interface UserCredentialRepository extends
+        JpaRepository<UserCredential, UserCredentialId>,
+        JpaSpecificationExecutor<UserCredential> {
+
+    /**
+     * Find all credentials belonging to a given user.
+     *
+     * @param userId the user ID
+     * @return list of matching credentials
+     */
+    @EntityGraph(attributePaths = {"user"})
+    @Query("""
+            select uc
+            from UserCredential uc
+            where uc.user.id = :userId
+            """)
+    List<UserCredential> findAllByUserId(@Param("userId") Long userId);
+
+    /**
+     * Find a specific credential for a user by provider.
+     *
+     * @param userId   the user ID
+     * @param provider the authentication provider identifier
+     * @return an optional containing the matching credential, or empty if not found
+     */
+    @EntityGraph(attributePaths = {"user"})
+    @Query("""
+            select uc
+            from UserCredential uc
+            where uc.user.id = :userId
+              and uc.id.provider = :provider
+            """)
+    Optional<UserCredential> findByUserIdAndProvider(@Param("userId") Long userId, @Param("provider") String provider);
+
+    /**
+     * Delete a specific credential for a user by provider.
+     *
+     * @param userId   the user ID
+     * @param provider the authentication provider identifier
+     */
+    @Modifying
+    @Query("""
+            delete from UserCredential uc
+            where uc.user.id = :userId
+              and uc.id.provider = :provider
+            """)
+    void deleteByUserIdAndProvider(@Param("userId") Long userId, @Param("provider") String provider);
+
+    /**
+     * Delete all credentials for a given user.
+     *
+     * @param userId the user ID
+     */
+    @Modifying
+    @Query("""
+            delete from UserCredential uc
+            where uc.user.id = :userId
+            """)
+    void deleteAllByUserId(@Param("userId") Long userId);
+}
+
+
+

server/src/main/java/com/onixbyte/ahsarahguide/repository/UserRepository.java

@@ -0,0 +1,52 @@
+package com.onixbyte.ahsarahguide.repository;
+
+import com.onixbyte.ahsarahguide.domain.entity.User;
+import org.jspecify.annotations.NonNull;
+import org.springframework.data.jpa.repository.EntityGraph;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.Optional;
+
+/**
+ * Spring Data JPA repository for {@link User} entity operations.
+ *
+ * @author zihluwang
+ */
+@Repository
+public interface UserRepository extends JpaRepository<User, Long>, JpaSpecificationExecutor<User> {
+
+    @Override
+    @EntityGraph(attributePaths = {"credentials"})
+    @NonNull
+    Optional<User> findById(@NonNull Long id);
+
+    @EntityGraph(attributePaths = {"credentials"})
+    Optional<User> findByUsername(String username);
+
+    @EntityGraph(attributePaths = {"credentials"})
+    Optional<User> findByEmail(String email);
+
+    boolean existsByUsername(String username);
+
+    boolean existsByEmail(String email);
+
+    /**
+     * Find a user by either username or email.
+     *
+     * @param principal the username or email to search for
+     * @return an optional containing the matching user, or empty if not found
+     */
+    @EntityGraph(attributePaths = {"credentials"})
+    @Query("""
+            select u
+            from User u
+            where u.username = :principal
+               or u.email = :principal
+            """)
+    Optional<User> findByUsernameOrEmail(@Param("principal") String principal);
+}
+

server/src/main/java/com/onixbyte/ahsarahguide/repository/UserRoleRepository.java

@@ -0,0 +1,72 @@
+package com.onixbyte.ahsarahguide.repository;
+
+import com.onixbyte.ahsarahguide.domain.entity.UserRole;
+import org.springframework.data.jpa.repository.*;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+/**
+ * Spring Data JPA repository for {@link UserRole} entity operations.
+ *
+ * @author zihluwang
+ */
+@Repository
+public interface UserRoleRepository extends JpaRepository<UserRole, Long>, JpaSpecificationExecutor<UserRole> {
+
+    /**
+     * Find all roles assigned to a given user.
+     *
+     * @param userId the user ID
+     * @return list of matching role assignments
+     */
+    @EntityGraph(attributePaths = {"user"})
+    @Query("""
+            select ur
+            from UserRole ur
+            where ur.user.id = :userId
+            """)
+    List<UserRole> findAllByUserId(@Param("userId") Long userId);
+
+    /**
+     * Check whether a user has a specific role.
+     *
+     * @param userId the user ID
+     * @param role   the role name
+     * @return true if the role is assigned, false otherwise
+     */
+    @Query("""
+            select count(ur) > 0
+            from UserRole ur
+            where ur.user.id = :userId
+              and ur.role = :role
+            """)
+    boolean existsByUserIdAndRole(@Param("userId") Long userId, @Param("role") String role);
+
+    /**
+     * Delete a specific role assignment for a user.
+     *
+     * @param userId the user ID
+     * @param role   the role name
+     */
+    @Modifying
+    @Query("""
+            delete from UserRole ur
+            where ur.user.id = :userId
+              and ur.role = :role
+            """)
+    void deleteByUserIdAndRole(@Param("userId") Long userId, @Param("role") String role);
+
+    /**
+     * Delete all role assignments for a given user.
+     *
+     * @param userId the user ID
+     */
+    @Modifying
+    @Query("""
+            delete from UserRole ur
+            where ur.user.id = :userId
+            """)
+    void deleteAllByUserId(@Param("userId") Long userId);
+}

server/src/main/java/com/onixbyte/ahsarahguide/security/annotation/RequiresAdmin.java

@@ -0,0 +1,14 @@
+package com.onixbyte.ahsarahguide.security.annotation;
+
+import org.springframework.security.access.prepost.PreAuthorize;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target({ElementType.METHOD, ElementType.TYPE})
+@Retention(RetentionPolicy.RUNTIME)
+@PreAuthorize("isAuthenticated() && hasAnyRole('ADMIN', 'SUPER_USER')")
+public @interface RequiresAdmin {
+}

server/src/main/java/com/onixbyte/ahsarahguide/security/annotation/RequiresAuth.java

@@ -0,0 +1,19 @@
+package com.onixbyte.ahsarahguide.security.annotation;
+
+import org.springframework.security.access.prepost.PreAuthorize;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Annotation to mark controller endpoints that require authentication.
+ *
+ * @author zihluwang
+ */
+@Target({ElementType.METHOD, ElementType.TYPE})
+@Retention(RetentionPolicy.RUNTIME)
+@PreAuthorize("isAuthenticated()")
+public @interface RequiresAuth {
+}

server/src/main/java/com/onixbyte/ahsarahguide/security/annotation/RequiresSuperUser.java

@@ -0,0 +1,14 @@
+package com.onixbyte.ahsarahguide.security.annotation;
+
+import org.springframework.security.access.prepost.PreAuthorize;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target({ElementType.METHOD, ElementType.TYPE})
+@Retention(RetentionPolicy.RUNTIME)
+@PreAuthorize("isAuthenticated() && hasRole('SUPER_USER')")
+public @interface RequiresSuperUser {
+}

server/src/main/java/com/onixbyte/ahsarahguide/security/authentication/UsernamePasswordAuthentication.java

@@ -0,0 +1,101 @@
+package com.onixbyte.ahsarahguide.security.authentication;
+
+import com.onixbyte.ahsarahguide.domain.entity.User;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.CredentialsContainer;
+import org.springframework.security.core.GrantedAuthority;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+/**
+ * Custom authentication token for username/password-based login flows.
+ *
+ * @author zihluwang
+ */
+public class UsernamePasswordAuthentication implements Authentication, CredentialsContainer {
+    private final String username;
+    private String password;
+    private boolean authenticated;
+    private User user;
+    private Collection<? extends GrantedAuthority> authorities;
+
+    private UsernamePasswordAuthentication(
+            String username,
+            String password,
+            boolean authenticated,
+            User user,
+            Collection<? extends GrantedAuthority> authorities
+    ) {
+        this.username = username;
+        this.password = password;
+        this.authenticated = authenticated;
+        this.user = user;
+        this.authorities = authorities == null ? List.of() : new ArrayList<>(authorities);
+    }
+
+    public static UsernamePasswordAuthentication unauthenticated(String username, String password) {
+        return new UsernamePasswordAuthentication(username, password, false, null, List.of());
+    }
+
+    public static UsernamePasswordAuthentication authenticated(User user) {
+        return new UsernamePasswordAuthentication(user.getUsername(), null, true, user, List.of());
+    }
+
+    public static UsernamePasswordAuthentication authenticated(
+            User user,
+            Collection<? extends GrantedAuthority> authorities
+    ) {
+        return new UsernamePasswordAuthentication(user.getUsername(), null, true, user, authorities);
+    }
+
+    @Override
+    public Collection<? extends GrantedAuthority> getAuthorities() {
+        return authorities;
+    }
+
+    @Override
+    public String getCredentials() {
+        return password;
+    }
+
+    @Override
+    public User getDetails() {
+        return user;
+    }
+
+    @Override
+    public String getPrincipal() {
+        return username;
+    }
+
+    @Override
+    public boolean isAuthenticated() {
+        return authenticated;
+    }
+
+    @Override
+    public void setAuthenticated(boolean authenticated) throws IllegalArgumentException {
+        this.authenticated = authenticated;
+    }
+
+    @Override
+    public String getName() {
+        return username;
+    }
+
+    @Override
+    public void eraseCredentials() {
+        this.password = null;
+    }
+
+    public void setDetails(User user) {
+        this.user = user;
+    }
+
+    public void setAuthorities(Collection<? extends GrantedAuthority> authorities) {
+        this.authorities = new ArrayList<>(authorities);
+    }
+}
+