Replace websocket flow with SSE support in backend.

Update handlers, services, router, and data conversion logic to support server-sent events and related message pipeline changes.

Made-with: Cursor

internal/repository/post_repo.go

@@ -2,6 +2,7 @@ package repository
 
 import (
 	"carrot_bbs/internal/model"
+	"time"
 
 	"gorm.io/gorm"
 )
@@ -52,9 +53,41 @@ func (r *PostRepository) GetByID(id string) (*model.Post, error) {
 
 // Update 更新帖子
 func (r *PostRepository) Update(post *model.Post) error {
+	post.UpdatedAt = time.Now()
 	return r.db.Save(post).Error
 }
 
+// UpdateWithImages 更新帖子及其图片（images=nil 表示不更新图片）
+func (r *PostRepository) UpdateWithImages(post *model.Post, images *[]string) error {
+	return r.db.Transaction(func(tx *gorm.DB) error {
+		post.UpdatedAt = time.Now()
+		if err := tx.Save(post).Error; err != nil {
+			return err
+		}
+
+		if images == nil {
+			return nil
+		}
+
+		if err := tx.Where("post_id = ?", post.ID).Delete(&model.PostImage{}).Error; err != nil {
+			return err
+		}
+
+		for i, url := range *images {
+			image := &model.PostImage{
+				PostID:    post.ID,
+				URL:       url,
+				SortOrder: i,
+			}
+			if err := tx.Create(image).Error; err != nil {
+				return err
+			}
+		}
+
+		return nil
+	})
+}
+
 // UpdateModerationStatus 更新帖子审核状态
 func (r *PostRepository) UpdateModerationStatus(postID string, status model.PostStatus, rejectReason string, reviewedBy string) error {
 	updates := map[string]interface{}{
@@ -100,15 +133,24 @@ func (r *PostRepository) Delete(id string) error {
 }
 
 // List 分页获取帖子列表
-func (r *PostRepository) List(page, pageSize int, userID string) ([]*model.Post, int64, error) {
+// includePending=true 时，仅在指定 userID 下额外返回 pending（用于作者查看自己待审核帖子）
+func (r *PostRepository) List(page, pageSize int, userID string, includePending bool) ([]*model.Post, int64, error) {
 	var posts []*model.Post
 	var total int64
 
-	query := r.db.Model(&model.Post{}).Where("status = ?", model.PostStatusPublished)
+	query := r.db.Model(&model.Post{})
 
 	if userID != "" {
 		query = query.Where("user_id = ?", userID)
 	}
+	if includePending && userID != "" {
+		query = query.Where("status IN ?", []model.PostStatus{
+			model.PostStatusPublished,
+			model.PostStatusPending,
+		})
+	} else {
+		query = query.Where("status = ?", model.PostStatusPublished)
+	}
 
 	query.Count(&total)
 
@@ -119,14 +161,32 @@ func (r *PostRepository) List(page, pageSize int, userID string) ([]*model.Post,
 }
 
 // GetUserPosts 获取用户帖子
-func (r *PostRepository) GetUserPosts(userID string, page, pageSize int) ([]*model.Post, int64, error) {
+func (r *PostRepository) GetUserPosts(userID string, page, pageSize int, includePending bool) ([]*model.Post, int64, error) {
 	var posts []*model.Post
 	var total int64
 
-	r.db.Model(&model.Post{}).Where("user_id = ? AND status = ?", userID, model.PostStatusPublished).Count(&total)
+	statusQuery := r.db.Model(&model.Post{}).Where("user_id = ?", userID)
+	if includePending {
+		statusQuery = statusQuery.Where("status IN ?", []model.PostStatus{
+			model.PostStatusPublished,
+			model.PostStatusPending,
+		})
+	} else {
+		statusQuery = statusQuery.Where("status = ?", model.PostStatusPublished)
+	}
+	statusQuery.Count(&total)
 
 	offset := (page - 1) * pageSize
-	err := r.db.Where("user_id = ? AND status = ?", userID, model.PostStatusPublished).Preload("User").Preload("Images").Offset(offset).Limit(pageSize).Order("created_at DESC").Find(&posts).Error
+	listQuery := r.db.Where("user_id = ?", userID)
+	if includePending {
+		listQuery = listQuery.Where("status IN ?", []model.PostStatus{
+			model.PostStatusPublished,
+			model.PostStatusPending,
+		})
+	} else {
+		listQuery = listQuery.Where("status = ?", model.PostStatusPublished)
+	}
+	err := listQuery.Preload("User").Preload("Images").Offset(offset).Limit(pageSize).Order("created_at DESC").Find(&posts).Error
 
 	return posts, total, err
 }
@@ -256,7 +316,8 @@ func (r *PostRepository) IsFavorited(postID, userID string) bool {
 // IncrementViews 增加帖子观看量
 func (r *PostRepository) IncrementViews(postID string) error {
 	return r.db.Model(&model.Post{}).Where("id = ?", postID).
-		Updates(map[string]interface{}{
+		// 浏览量属于统计字段，不应影响帖子内容更新时间（updated_at）
+		UpdateColumns(map[string]interface{}{
 			"views_count": gorm.Expr("views_count + 1"),
 			"hot_score":   gorm.Expr("likes_count * 2 + comments_count * 3 + (views_count + 1) * 0.1"),
 		}).Error