feat: shorten invite links

test: fix PostServiceTest for new PostService deps

backend/src/main/java/com/openisle/model/Comment.java

@@ -5,6 +5,8 @@ import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
 import org.hibernate.annotations.CreationTimestamp;
+import org.hibernate.annotations.SQLDelete;
+import org.hibernate.annotations.Where;
 
 import java.time.LocalDateTime;
 
@@ -13,6 +15,8 @@ import java.time.LocalDateTime;
 @Setter
 @NoArgsConstructor
 @Table(name = "comments")
+@SQLDelete(sql = "UPDATE comments SET deleted_at = CURRENT_TIMESTAMP(6) WHERE id = ?")
+@Where(clause = "deleted_at IS NULL")
 public class Comment {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -41,4 +45,7 @@ public class Comment {
     @Column
     private LocalDateTime pinnedAt;
 
+    @Column(name = "deleted_at")
+    private LocalDateTime deletedAt;
+
 }

backend/src/main/java/com/openisle/model/InviteToken.java

@@ -14,6 +14,13 @@ public class InviteToken {
     @Id
     private String token;
 
+    /**
+     * Short token used in invite links. Existing records may have this field null
+     * and fall back to {@link #token} for backward compatibility.
+     */
+    @Column(unique = true)
+    private String shortToken;
+
     @ManyToOne
     private User inviter;
 

backend/src/main/java/com/openisle/model/PointHistory.java

@@ -4,6 +4,8 @@ import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
+import org.hibernate.annotations.SQLDelete;
+import org.hibernate.annotations.Where;
 
 import java.time.LocalDateTime;
 
@@ -13,6 +15,8 @@ import java.time.LocalDateTime;
 @Setter
 @NoArgsConstructor
 @Table(name = "point_histories")
+@SQLDelete(sql = "UPDATE point_histories SET deleted_at = CURRENT_TIMESTAMP(6) WHERE id = ?")
+@Where(clause = "deleted_at IS NULL")
 public class PointHistory {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -46,4 +50,7 @@ public class PointHistory {
 
     @Column(name = "created_at", nullable = false)
     private LocalDateTime createdAt;
+
+    @Column(name = "deleted_at")
+    private LocalDateTime deletedAt;
 }

backend/src/main/java/com/openisle/repository/InviteTokenRepository.java

@@ -9,4 +9,8 @@ import java.util.Optional;
 
 public interface InviteTokenRepository extends JpaRepository<InviteToken, String> {
     Optional<InviteToken> findByInviterAndCreatedDate(User inviter, LocalDate createdDate);
+
+    Optional<InviteToken> findByShortToken(String shortToken);
+
+    boolean existsByShortToken(String shortToken);
 }

backend/src/main/java/com/openisle/repository/PointHistoryRepository.java

@@ -2,6 +2,7 @@ package com.openisle.repository;
 
 import com.openisle.model.PointHistory;
 import com.openisle.model.User;
+import com.openisle.model.Comment;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import java.time.LocalDateTime;
@@ -12,4 +13,6 @@ public interface PointHistoryRepository extends JpaRepository<PointHistory, Long
     long countByUser(User user);
 
     List<PointHistory> findByUserAndCreatedAtAfterOrderByCreatedAtDesc(User user, LocalDateTime createdAt);
+    
+    List<PointHistory> findByComment(Comment comment);
 }

backend/src/main/java/com/openisle/service/CommentService.java

@@ -11,6 +11,7 @@ import com.openisle.repository.UserRepository;
 import com.openisle.repository.ReactionRepository;
 import com.openisle.repository.CommentSubscriptionRepository;
 import com.openisle.repository.NotificationRepository;
+import com.openisle.repository.PointHistoryRepository;
 import com.openisle.service.NotificationService;
 import com.openisle.service.SubscriptionService;
 import com.openisle.model.Role;
@@ -37,6 +38,7 @@ public class CommentService {
     private final ReactionRepository reactionRepository;
     private final CommentSubscriptionRepository commentSubscriptionRepository;
     private final NotificationRepository notificationRepository;
+    private final PointHistoryRepository pointHistoryRepository;
     private final ImageUploader imageUploader;
 
     @Transactional
@@ -235,10 +237,14 @@ public class CommentService {
         for (Comment c : replies) {
             deleteCommentCascade(c);
         }
+        // 逻辑删除相关的积分历史记录
+        pointHistoryRepository.findByComment(comment).forEach(pointHistoryRepository::delete);
+        // 删除其他相关数据
         reactionRepository.findByComment(comment).forEach(reactionRepository::delete);
         commentSubscriptionRepository.findByComment(comment).forEach(commentSubscriptionRepository::delete);
         notificationRepository.deleteAll(notificationRepository.findByComment(comment));
         imageUploader.removeReferences(imageUploader.extractUrls(comment.getContent()));
+        // 逻辑删除评论
         commentRepository.delete(comment);
         log.debug("deleteCommentCascade removed comment {}", comment.getId());
     }

backend/src/main/java/com/openisle/service/InviteService.java

@@ -30,33 +30,53 @@ public class InviteService {
         LocalDate today = LocalDate.now();
         Optional<InviteToken> existing = inviteTokenRepository.findByInviterAndCreatedDate(inviter, today);
         if (existing.isPresent()) {
-            return existing.get().getToken();
+            InviteToken inviteToken = existing.get();
+            return inviteToken.getShortToken() != null ? inviteToken.getShortToken() : inviteToken.getToken();
         }
+
         String token = jwtService.generateInviteToken(username);
+        String shortToken;
+        do {
+            shortToken = java.util.UUID.randomUUID().toString().replace("-", "").substring(0, 8);
+        } while (inviteTokenRepository.existsByShortToken(shortToken));
+
         InviteToken inviteToken = new InviteToken();
         inviteToken.setToken(token);
+        inviteToken.setShortToken(shortToken);
         inviteToken.setInviter(inviter);
         inviteToken.setCreatedDate(today);
         inviteToken.setUsageCount(0);
         inviteTokenRepository.save(inviteToken);
-        return token;
+        return shortToken;
     }
 
     public InviteValidateResult validate(String token) {
         if (token == null || token.isEmpty()) {
             return new InviteValidateResult(null, false);
         }
+
+        InviteToken invite = inviteTokenRepository.findById(token).orElse(null);
+        String realToken = token;
+        if (invite == null) {
+            invite = inviteTokenRepository.findByShortToken(token).orElse(null);
+            if (invite == null) {
+                return new InviteValidateResult(null, false);
+            }
+            realToken = invite.getToken();
+        }
+
         try {
-            jwtService.validateAndGetSubjectForInvite(token);
+            jwtService.validateAndGetSubjectForInvite(realToken);
         } catch (Exception e) {
             return new InviteValidateResult(null, false);
         }
-        InviteToken invite = inviteTokenRepository.findById(token).orElse(null);
-        return new InviteValidateResult(invite, invite != null && invite.getUsageCount() < 3);
+
+        return new InviteValidateResult(invite, invite.getUsageCount() < 3);
     }
 
     public void consume(String token, String newUserName) {
-        InviteToken invite = inviteTokenRepository.findById(token).orElseThrow();
+        InviteToken invite = inviteTokenRepository.findById(token)
+                .orElseGet(() -> inviteTokenRepository.findByShortToken(token).orElseThrow());
         invite.setUsageCount(invite.getUsageCount() + 1);
         inviteTokenRepository.save(invite);
         pointService.awardForInvite(invite.getInviter().getUsername(), newUserName);

backend/src/main/resources/db/migration/V4__add_logical_delete_support.sql

@@ -0,0 +1,11 @@
+-- Add logical delete support for comments and point_histories tables
+
+-- Add deleted_at column to comments table
+ALTER TABLE comments ADD COLUMN deleted_at DATETIME(6) NULL;
+
+-- Add deleted_at column to point_histories table  
+ALTER TABLE point_histories ADD COLUMN deleted_at DATETIME(6) NULL;
+
+-- Add index for better performance on logical delete queries
+CREATE INDEX idx_comments_deleted_at ON comments(deleted_at);
+CREATE INDEX idx_point_histories_deleted_at ON point_histories(deleted_at);

backend/src/test/java/com/openisle/service/CommentServiceTest.java

@@ -6,6 +6,7 @@ import com.openisle.repository.UserRepository;
 import com.openisle.repository.ReactionRepository;
 import com.openisle.repository.CommentSubscriptionRepository;
 import com.openisle.repository.NotificationRepository;
+import com.openisle.repository.PointHistoryRepository;
 import com.openisle.exception.RateLimitException;
 import org.junit.jupiter.api.Test;
 
@@ -24,10 +25,11 @@ class CommentServiceTest {
         ReactionRepository reactionRepo = mock(ReactionRepository.class);
         CommentSubscriptionRepository subRepo = mock(CommentSubscriptionRepository.class);
         NotificationRepository nRepo = mock(NotificationRepository.class);
+        PointHistoryRepository pointHistoryRepo = mock(PointHistoryRepository.class);
         ImageUploader imageUploader = mock(ImageUploader.class);
 
         CommentService service = new CommentService(commentRepo, postRepo, userRepo,
-                notifService, subService, reactionRepo, subRepo, nRepo, imageUploader);
+                notifService, subService, reactionRepo, subRepo, nRepo, pointHistoryRepo, imageUploader);
 
         when(commentRepo.countByAuthorAfter(eq("alice"), any())).thenReturn(3L);
 

backend/src/test/java/com/openisle/service/PostServiceTest.java

@@ -22,6 +22,8 @@ class PostServiceTest {
         CategoryRepository catRepo = mock(CategoryRepository.class);
         TagRepository tagRepo = mock(TagRepository.class);
         LotteryPostRepository lotteryRepo = mock(LotteryPostRepository.class);
+        PollPostRepository pollPostRepo = mock(PollPostRepository.class);
+        PollVoteRepository pollVoteRepo = mock(PollVoteRepository.class);
         NotificationService notifService = mock(NotificationService.class);
         SubscriptionService subService = mock(SubscriptionService.class);
         CommentService commentService = mock(CommentService.class);
@@ -37,7 +39,7 @@ class PostServiceTest {
         PointService pointService = mock(PointService.class);
 
         PostService service = new PostService(postRepo, userRepo, catRepo, tagRepo, lotteryRepo,
-                notifService, subService, commentService, commentRepo,
+                pollPostRepo, pollVoteRepo, notifService, subService, commentService, commentRepo,
                 reactionRepo, subRepo, notificationRepo, postReadService,
                 imageUploader, taskScheduler, emailSender, context, pointService, PublishMode.DIRECT);
         when(context.getBean(PostService.class)).thenReturn(service);
@@ -69,6 +71,8 @@ class PostServiceTest {
         CategoryRepository catRepo = mock(CategoryRepository.class);
         TagRepository tagRepo = mock(TagRepository.class);
         LotteryPostRepository lotteryRepo = mock(LotteryPostRepository.class);
+        PollPostRepository pollPostRepo = mock(PollPostRepository.class);
+        PollVoteRepository pollVoteRepo = mock(PollVoteRepository.class);
         NotificationService notifService = mock(NotificationService.class);
         SubscriptionService subService = mock(SubscriptionService.class);
         CommentService commentService = mock(CommentService.class);
@@ -84,7 +88,7 @@ class PostServiceTest {
         PointService pointService = mock(PointService.class);
 
         PostService service = new PostService(postRepo, userRepo, catRepo, tagRepo, lotteryRepo,
-                notifService, subService, commentService, commentRepo,
+                pollPostRepo, pollVoteRepo, notifService, subService, commentService, commentRepo,
                 reactionRepo, subRepo, notificationRepo, postReadService,
                 imageUploader, taskScheduler, emailSender, context, pointService, PublishMode.DIRECT);
         when(context.getBean(PostService.class)).thenReturn(service);
@@ -122,6 +126,8 @@ class PostServiceTest {
         CategoryRepository catRepo = mock(CategoryRepository.class);
         TagRepository tagRepo = mock(TagRepository.class);
         LotteryPostRepository lotteryRepo = mock(LotteryPostRepository.class);
+        PollPostRepository pollPostRepo = mock(PollPostRepository.class);
+        PollVoteRepository pollVoteRepo = mock(PollVoteRepository.class);
         NotificationService notifService = mock(NotificationService.class);
         SubscriptionService subService = mock(SubscriptionService.class);
         CommentService commentService = mock(CommentService.class);
@@ -137,7 +143,7 @@ class PostServiceTest {
         PointService pointService = mock(PointService.class);
 
         PostService service = new PostService(postRepo, userRepo, catRepo, tagRepo, lotteryRepo,
-                notifService, subService, commentService, commentRepo,
+                pollPostRepo, pollVoteRepo, notifService, subService, commentService, commentRepo,
                 reactionRepo, subRepo, notificationRepo, postReadService,
                 imageUploader, taskScheduler, emailSender, context, pointService, PublishMode.DIRECT);
         when(context.getBean(PostService.class)).thenReturn(service);
@@ -156,6 +162,8 @@ class PostServiceTest {
         CategoryRepository catRepo = mock(CategoryRepository.class);
         TagRepository tagRepo = mock(TagRepository.class);
         LotteryPostRepository lotteryRepo = mock(LotteryPostRepository.class);
+        PollPostRepository pollPostRepo = mock(PollPostRepository.class);
+        PollVoteRepository pollVoteRepo = mock(PollVoteRepository.class);
         NotificationService notifService = mock(NotificationService.class);
         SubscriptionService subService = mock(SubscriptionService.class);
         CommentService commentService = mock(CommentService.class);
@@ -171,7 +179,7 @@ class PostServiceTest {
         PointService pointService = mock(PointService.class);
 
         PostService service = new PostService(postRepo, userRepo, catRepo, tagRepo, lotteryRepo,
-                notifService, subService, commentService, commentRepo,
+                pollPostRepo, pollVoteRepo, notifService, subService, commentService, commentRepo,
                 reactionRepo, subRepo, notificationRepo, postReadService,
                 imageUploader, taskScheduler, emailSender, context, pointService, PublishMode.DIRECT);
         when(context.getBean(PostService.class)).thenReturn(service);