15f0f1605e
- Added RecordShare method in PostHandler to handle sharing posts and increment share count. - Introduced IncrementShares method in PostRepository to update shares_count for published posts. - Updated PostService to include RecordShare, ensuring cache invalidation for post details and lists. - Integrated new share route in the router for handling share requests.
702 lines
20 KiB
Go
702 lines
20 KiB
Go
package handler
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import (
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"errors"
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"fmt"
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"strconv"
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"github.com/gin-gonic/gin"
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"gorm.io/gorm"
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"carrot_bbs/internal/dto"
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"carrot_bbs/internal/model"
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"carrot_bbs/internal/pkg/cursor"
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"carrot_bbs/internal/pkg/response"
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"carrot_bbs/internal/service"
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)
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// PostHandler 帖子处理器
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type PostHandler struct {
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postService service.PostService
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userService service.UserService
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}
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// NewPostHandler 创建帖子处理器
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func NewPostHandler(postService service.PostService, userService service.UserService) *PostHandler {
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return &PostHandler{
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postService: postService,
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userService: userService,
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}
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}
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// Create 创建帖子
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func (h *PostHandler) Create(c *gin.Context) {
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userID := c.GetString("user_id")
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if userID == "" {
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response.Unauthorized(c, "")
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return
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}
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type CreateRequest struct {
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Title string `json:"title" binding:"required"`
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Content string `json:"content" binding:"required"`
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Images []string `json:"images"`
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}
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var req CreateRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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response.BadRequest(c, err.Error())
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return
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}
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post, err := h.postService.Create(c.Request.Context(), userID, req.Title, req.Content, req.Images)
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if err != nil {
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var moderationErr *service.PostModerationRejectedError
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if errors.As(err, &moderationErr) {
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response.BadRequest(c, moderationErr.UserMessage())
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return
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}
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response.InternalServerError(c, "failed to create post")
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return
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}
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response.Success(c, dto.ConvertPostToResponse(post, false, false))
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}
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// GetByID 获取帖子（不增加浏览量）
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func (h *PostHandler) GetByID(c *gin.Context) {
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id := c.Param("id")
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post, err := h.postService.GetByID(c.Request.Context(), id)
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if err != nil {
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response.NotFound(c, "post not found")
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return
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}
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// 非作者不可查看未发布内容
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currentUserID := c.GetString("user_id")
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if post.Status != model.PostStatusPublished && post.UserID != currentUserID {
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response.NotFound(c, "post not found")
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return
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}
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// 注意：不再自动增加浏览量，浏览量通过 RecordView 端点单独记录
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// 获取交互状态
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isLiked, isFavorited := h.postService.GetPostInteractionStatusSingle(c.Request.Context(), id, currentUserID)
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// 如果有当前用户，检查与帖子作者的相互关注状态
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var authorWithFollowStatus *dto.UserResponse
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if currentUserID != "" && post.User != nil {
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_, isFollowing, isFollowingMe, err := h.userService.GetUserByIDWithMutualFollowStatus(c.Request.Context(), post.UserID, currentUserID)
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if err == nil {
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authorWithFollowStatus = dto.ConvertUserToResponseWithMutualFollow(post.User, isFollowing, isFollowingMe)
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} else {
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// 如果出错，使用默认的author
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authorWithFollowStatus = dto.ConvertUserToResponse(post.User)
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}
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}
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// 构建响应
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responseData := &dto.PostResponse{
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ID: post.ID,
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UserID: post.UserID,
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Title: post.Title,
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Content: post.Content,
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Images: dto.ConvertPostImagesToResponse(post.Images),
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Status: string(post.Status),
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LikesCount: post.LikesCount,
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CommentsCount: post.CommentsCount,
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FavoritesCount: post.FavoritesCount,
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SharesCount: post.SharesCount,
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ViewsCount: post.ViewsCount,
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IsPinned: post.IsPinned,
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IsLocked: post.IsLocked,
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IsVote: post.IsVote,
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CreatedAt: dto.FormatTime(post.CreatedAt),
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UpdatedAt: dto.FormatTime(post.UpdatedAt),
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ContentEditedAt: dto.FormatTimePointer(post.ContentEditedAt),
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Author: authorWithFollowStatus,
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IsLiked: isLiked,
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IsFavorited: isFavorited,
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}
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response.Success(c, responseData)
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}
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// RecordView 记录帖子浏览（增加浏览量）
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func (h *PostHandler) RecordView(c *gin.Context) {
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id := c.Param("id")
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userID := c.GetString("user_id")
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// 验证帖子存在
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_, err := h.postService.GetByID(c.Request.Context(), id)
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if err != nil {
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response.NotFound(c, "post not found")
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return
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}
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// 增加浏览量
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if err := h.postService.IncrementViews(c.Request.Context(), id, userID); err != nil {
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fmt.Printf("[ERROR] Failed to increment views for post %s: %v\n", id, err)
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response.InternalServerError(c, "failed to record view")
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return
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}
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response.Success(c, gin.H{"success": true})
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}
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// RecordShare 记录帖子分享（shares_count +1，仅已发布）
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// 支持可选 JSON：{"channel":"wechat"|"qq"|"copy_link"|"system"|...}，用于后续统计
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func (h *PostHandler) RecordShare(c *gin.Context) {
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id := c.Param("id")
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_ = c.GetString("user_id") // 预留：登录用户维度统计
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type shareBody struct {
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Channel string `json:"channel"`
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}
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var body shareBody
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if c.Request.ContentLength > 0 {
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if err := c.ShouldBindJSON(&body); err != nil {
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response.BadRequest(c, "invalid json body")
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return
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}
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}
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sharesCount, err := h.postService.RecordShare(c.Request.Context(), id, c.GetString("user_id"))
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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response.NotFound(c, "post not found")
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return
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}
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fmt.Printf("[ERROR] RecordShare post %s: %v\n", id, err)
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response.InternalServerError(c, "failed to record share")
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return
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}
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data := gin.H{"success": true, "shares_count": sharesCount}
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if body.Channel != "" {
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data["channel"] = body.Channel
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}
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response.Success(c, data)
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}
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// List 获取帖子列表（支持游标分页和偏移分页）
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func (h *PostHandler) List(c *gin.Context) {
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// 检查是否使用游标分页
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// 当 cursor 参数存在时（包括空字符串），使用游标分页
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_, cursorExists := c.GetQuery("cursor")
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if cursorExists {
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h.ListByCursor(c)
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return
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}
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// 偏移分页（向后兼容）
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page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
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pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
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page, pageSize = normalizePagination(page, pageSize)
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userID := c.Query("user_id")
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tab := c.Query("tab")
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// 获取当前用户ID
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currentUserID := c.GetString("user_id")
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var posts []*model.Post
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var total int64
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var err error
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// 根据 tab 参数选择不同的获取方式
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switch tab {
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case "follow":
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// 获取关注用户的帖子，需要登录
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if currentUserID == "" {
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response.Unauthorized(c, "请先登录")
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return
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}
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posts, total, err = h.postService.GetFollowingPosts(c.Request.Context(), currentUserID, page, pageSize)
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case "hot":
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// 获取热门帖子
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posts, total, err = h.postService.GetHotPosts(c.Request.Context(), page, pageSize)
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case "latest":
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// 最新帖子
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if userID != "" && userID == currentUserID {
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posts, total, err = h.postService.GetLatestPostsForOwner(c.Request.Context(), page, pageSize, userID)
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} else {
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posts, total, err = h.postService.GetLatestPosts(c.Request.Context(), page, pageSize, userID)
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}
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default:
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// 默认获取最新帖子
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if userID != "" && userID == currentUserID {
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posts, total, err = h.postService.GetLatestPostsForOwner(c.Request.Context(), page, pageSize, userID)
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} else {
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posts, total, err = h.postService.GetLatestPosts(c.Request.Context(), page, pageSize, userID)
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}
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}
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if err != nil {
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response.InternalServerError(c, "failed to get posts")
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return
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}
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// 批量获取交互状态
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postIDs := make([]string, len(posts))
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for i, post := range posts {
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postIDs[i] = post.ID
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}
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isLikedMap, isFavoritedMap, _ := h.postService.GetPostInteractionStatus(c.Request.Context(), postIDs, currentUserID)
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// 转换为响应结构
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postResponses := dto.BuildPostsWithInteractionResponse(posts, isLikedMap, isFavoritedMap)
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response.Paginated(c, postResponses, total, page, pageSize)
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}
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// ListByCursor 游标分页获取帖子列表
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func (h *PostHandler) ListByCursor(c *gin.Context) {
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userID := c.Query("user_id")
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currentUserID := c.GetString("user_id")
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tab := c.Query("tab")
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// 解析游标分页请求
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req := h.parseCursorRequest(c)
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// 判断是否包含待审核帖子
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includePending := userID != "" && userID == currentUserID
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var result *cursor.CursorPageResult[*model.Post]
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var err error
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// 根据 tab 参数选择不同的获取方式
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switch tab {
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case "follow":
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// 获取关注用户的帖子，需要登录
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if currentUserID == "" {
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response.Unauthorized(c, "请先登录")
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return
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}
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result, err = h.postService.GetFollowingPostsByCursor(c.Request.Context(), currentUserID, req)
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case "hot":
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// 获取热门帖子
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result, err = h.postService.GetHotPostsByCursor(c.Request.Context(), req)
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case "latest":
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// 最新帖子
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result, err = h.postService.ListByCursor(c.Request.Context(), userID, includePending, req)
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default:
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// 默认获取最新帖子
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result, err = h.postService.ListByCursor(c.Request.Context(), userID, includePending, req)
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}
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if err != nil {
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response.InternalServerError(c, "failed to get posts")
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return
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}
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// 批量获取交互状态
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postIDs := make([]string, len(result.Items))
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for i, post := range result.Items {
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postIDs[i] = post.ID
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}
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isLikedMap, isFavoritedMap, _ := h.postService.GetPostInteractionStatus(c.Request.Context(), postIDs, currentUserID)
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// 转换为响应结构
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postResponses := dto.BuildPostsWithInteractionResponse(result.Items, isLikedMap, isFavoritedMap)
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// 构建游标分页响应
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cursorResp := &dto.PostCursorPageResponse{
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Items: postResponses,
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NextCursor: result.NextCursor,
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PrevCursor: result.PrevCursor,
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HasMore: result.HasMore,
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}
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response.Success(c, cursorResp)
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}
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// Update 更新帖子
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func (h *PostHandler) Update(c *gin.Context) {
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userID := c.GetString("user_id")
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if userID == "" {
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response.Unauthorized(c, "")
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return
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}
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id := c.Param("id")
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post, err := h.postService.GetByID(c.Request.Context(), id)
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if err != nil {
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response.NotFound(c, "post not found")
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return
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}
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if post.UserID != userID {
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response.Forbidden(c, "cannot update others' post")
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return
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}
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type UpdateRequest struct {
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Title string `json:"title"`
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Content string `json:"content"`
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Images *[]string `json:"images"`
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}
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var req UpdateRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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response.BadRequest(c, err.Error())
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return
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}
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if req.Title != "" {
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post.Title = req.Title
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}
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if req.Content != "" {
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post.Content = req.Content
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}
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err = h.postService.UpdateWithImages(c.Request.Context(), post, req.Images)
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if err != nil {
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response.InternalServerError(c, "failed to update post")
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return
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}
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post, err = h.postService.GetByID(c.Request.Context(), post.ID)
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if err != nil {
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response.InternalServerError(c, "failed to get updated post")
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return
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}
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// 获取交互状态
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currentUserID := c.GetString("user_id")
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isLiked, isFavorited := h.postService.GetPostInteractionStatusSingle(c.Request.Context(), post.ID, currentUserID)
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response.Success(c, dto.BuildPostResponse(post, isLiked, isFavorited))
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}
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// Delete 删除帖子
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func (h *PostHandler) Delete(c *gin.Context) {
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userID := c.GetString("user_id")
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if userID == "" {
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response.Unauthorized(c, "")
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return
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}
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id := c.Param("id")
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post, err := h.postService.GetByID(c.Request.Context(), id)
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if err != nil {
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response.NotFound(c, "post not found")
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return
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}
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if post.UserID != userID {
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response.Forbidden(c, "cannot delete others' post")
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return
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}
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err = h.postService.Delete(c.Request.Context(), id)
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if err != nil {
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response.InternalServerError(c, "failed to delete post")
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return
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}
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response.SuccessWithMessage(c, "post deleted", nil)
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}
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// Like 点赞帖子
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func (h *PostHandler) Like(c *gin.Context) {
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userID := c.GetString("user_id")
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if userID == "" {
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response.Unauthorized(c, "")
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return
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}
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id := c.Param("id")
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err := h.postService.Like(c.Request.Context(), id, userID)
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if err != nil {
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response.InternalServerError(c, "failed to like post")
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return
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}
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// 获取更新后的帖子状态
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post, err := h.postService.GetByID(c.Request.Context(), id)
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if err != nil {
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response.InternalServerError(c, "failed to get post")
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return
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}
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// 获取交互状态
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isLiked, isFavorited := h.postService.GetPostInteractionStatusSingle(c.Request.Context(), id, userID)
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response.Success(c, dto.BuildPostResponse(post, isLiked, isFavorited))
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}
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// Unlike 取消点赞
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func (h *PostHandler) Unlike(c *gin.Context) {
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userID := c.GetString("user_id")
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if userID == "" {
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response.Unauthorized(c, "")
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return
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}
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id := c.Param("id")
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err := h.postService.Unlike(c.Request.Context(), id, userID)
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if err != nil {
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response.InternalServerError(c, "failed to unlike post")
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return
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}
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// 获取更新后的帖子状态
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post, err := h.postService.GetByID(c.Request.Context(), id)
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if err != nil {
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response.InternalServerError(c, "failed to get post")
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return
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}
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// 获取交互状态
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isLiked, isFavorited := h.postService.GetPostInteractionStatusSingle(c.Request.Context(), id, userID)
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response.Success(c, dto.BuildPostResponse(post, isLiked, isFavorited))
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}
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// Favorite 收藏帖子
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func (h *PostHandler) Favorite(c *gin.Context) {
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userID := c.GetString("user_id")
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if userID == "" {
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response.Unauthorized(c, "")
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return
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}
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id := c.Param("id")
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err := h.postService.Favorite(c.Request.Context(), id, userID)
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if err != nil {
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response.InternalServerError(c, "failed to favorite post")
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return
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}
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// 获取更新后的帖子状态
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post, err := h.postService.GetByID(c.Request.Context(), id)
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if err != nil {
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response.InternalServerError(c, "failed to get post")
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return
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}
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// 获取交互状态
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isLiked, isFavorited := h.postService.GetPostInteractionStatusSingle(c.Request.Context(), id, userID)
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response.Success(c, dto.BuildPostResponse(post, isLiked, isFavorited))
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}
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// Unfavorite 取消收藏
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func (h *PostHandler) Unfavorite(c *gin.Context) {
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userID := c.GetString("user_id")
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if userID == "" {
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response.Unauthorized(c, "")
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return
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}
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id := c.Param("id")
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err := h.postService.Unfavorite(c.Request.Context(), id, userID)
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if err != nil {
|
||
response.InternalServerError(c, "failed to unfavorite post")
|
||
return
|
||
}
|
||
|
||
// 获取更新后的帖子状态
|
||
post, err := h.postService.GetByID(c.Request.Context(), id)
|
||
if err != nil {
|
||
response.InternalServerError(c, "failed to get post")
|
||
return
|
||
}
|
||
|
||
// 获取交互状态
|
||
isLiked, isFavorited := h.postService.GetPostInteractionStatusSingle(c.Request.Context(), id, userID)
|
||
|
||
response.Success(c, dto.BuildPostResponse(post, isLiked, isFavorited))
|
||
}
|
||
|
||
// GetUserPosts 获取用户帖子列表（支持游标分页和偏移分页）
|
||
func (h *PostHandler) GetUserPosts(c *gin.Context) {
|
||
// 检查是否使用游标分页
|
||
cursorStr := c.Query("cursor")
|
||
if cursorStr != "" {
|
||
h.GetUserPostsByCursor(c)
|
||
return
|
||
}
|
||
|
||
// 偏移分页（向后兼容）
|
||
userID := c.Param("id")
|
||
page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
|
||
pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
|
||
page, pageSize = normalizePagination(page, pageSize)
|
||
|
||
currentUserID := c.GetString("user_id")
|
||
includePending := currentUserID != "" && currentUserID == userID
|
||
posts, total, err := h.postService.GetUserPosts(c.Request.Context(), userID, page, pageSize, includePending)
|
||
if err != nil {
|
||
response.InternalServerError(c, "failed to get user posts")
|
||
return
|
||
}
|
||
|
||
// 批量获取交互状态
|
||
postIDs := make([]string, len(posts))
|
||
for i, post := range posts {
|
||
postIDs[i] = post.ID
|
||
}
|
||
isLikedMap, isFavoritedMap, _ := h.postService.GetPostInteractionStatus(c.Request.Context(), postIDs, currentUserID)
|
||
|
||
// 转换为响应结构
|
||
postResponses := dto.BuildPostsWithInteractionResponse(posts, isLikedMap, isFavoritedMap)
|
||
|
||
response.Paginated(c, postResponses, total, page, pageSize)
|
||
}
|
||
|
||
// GetUserPostsByCursor 游标分页获取用户帖子列表
|
||
func (h *PostHandler) GetUserPostsByCursor(c *gin.Context) {
|
||
userID := c.Param("id")
|
||
currentUserID := c.GetString("user_id")
|
||
|
||
// 解析游标分页请求
|
||
req := h.parseCursorRequest(c)
|
||
|
||
// 判断是否包含待审核帖子
|
||
includePending := currentUserID != "" && currentUserID == userID
|
||
|
||
// 调用游标分页服务
|
||
result, err := h.postService.GetUserPostsByCursor(c.Request.Context(), userID, includePending, req)
|
||
if err != nil {
|
||
response.InternalServerError(c, "failed to get user posts")
|
||
return
|
||
}
|
||
|
||
// 批量获取交互状态
|
||
postIDs := make([]string, len(result.Items))
|
||
for i, post := range result.Items {
|
||
postIDs[i] = post.ID
|
||
}
|
||
isLikedMap, isFavoritedMap, _ := h.postService.GetPostInteractionStatus(c.Request.Context(), postIDs, currentUserID)
|
||
|
||
// 转换为响应结构
|
||
postResponses := dto.BuildPostsWithInteractionResponse(result.Items, isLikedMap, isFavoritedMap)
|
||
|
||
// 构建游标分页响应
|
||
cursorResp := &dto.PostCursorPageResponse{
|
||
Items: postResponses,
|
||
NextCursor: result.NextCursor,
|
||
PrevCursor: result.PrevCursor,
|
||
HasMore: result.HasMore,
|
||
}
|
||
|
||
response.Success(c, cursorResp)
|
||
}
|
||
|
||
// GetFavorites 获取收藏列表
|
||
func (h *PostHandler) GetFavorites(c *gin.Context) {
|
||
userID := c.Param("id")
|
||
page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
|
||
pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
|
||
page, pageSize = normalizePagination(page, pageSize)
|
||
|
||
posts, total, err := h.postService.GetFavorites(c.Request.Context(), userID, page, pageSize)
|
||
if err != nil {
|
||
response.InternalServerError(c, "failed to get favorites")
|
||
return
|
||
}
|
||
|
||
// 批量获取交互状态
|
||
currentUserID := c.GetString("user_id")
|
||
postIDs := make([]string, len(posts))
|
||
for i, post := range posts {
|
||
postIDs[i] = post.ID
|
||
}
|
||
isLikedMap, isFavoritedMap, _ := h.postService.GetPostInteractionStatus(c.Request.Context(), postIDs, currentUserID)
|
||
|
||
// 转换为响应结构
|
||
postResponses := dto.BuildPostsWithInteractionResponse(posts, isLikedMap, isFavoritedMap)
|
||
|
||
response.Paginated(c, postResponses, total, page, pageSize)
|
||
}
|
||
|
||
// Search 搜索帖子
|
||
func (h *PostHandler) Search(c *gin.Context) {
|
||
keyword := c.Query("keyword")
|
||
|
||
// 检查是否使用游标分页
|
||
cursorStr := c.Query("cursor")
|
||
if cursorStr != "" {
|
||
h.SearchByCursor(c)
|
||
return
|
||
}
|
||
|
||
// 偏移分页（向后兼容）
|
||
page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
|
||
pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
|
||
page, pageSize = normalizePagination(page, pageSize)
|
||
|
||
posts, total, err := h.postService.Search(c.Request.Context(), keyword, page, pageSize)
|
||
if err != nil {
|
||
response.InternalServerError(c, "failed to search posts")
|
||
return
|
||
}
|
||
|
||
// 批量获取交互状态
|
||
currentUserID := c.GetString("user_id")
|
||
postIDs := make([]string, len(posts))
|
||
for i, post := range posts {
|
||
postIDs[i] = post.ID
|
||
}
|
||
isLikedMap, isFavoritedMap, _ := h.postService.GetPostInteractionStatus(c.Request.Context(), postIDs, currentUserID)
|
||
|
||
// 转换为响应结构
|
||
postResponses := dto.BuildPostsWithInteractionResponse(posts, isLikedMap, isFavoritedMap)
|
||
|
||
response.Paginated(c, postResponses, total, page, pageSize)
|
||
}
|
||
|
||
// SearchByCursor 游标分页搜索帖子
|
||
func (h *PostHandler) SearchByCursor(c *gin.Context) {
|
||
keyword := c.Query("keyword")
|
||
currentUserID := c.GetString("user_id")
|
||
|
||
// 解析游标分页请求
|
||
req := h.parseCursorRequest(c)
|
||
|
||
// 调用游标分页服务
|
||
result, err := h.postService.SearchByCursor(c.Request.Context(), keyword, req)
|
||
if err != nil {
|
||
response.InternalServerError(c, "failed to search posts")
|
||
return
|
||
}
|
||
|
||
// 批量获取交互状态
|
||
postIDs := make([]string, len(result.Items))
|
||
for i, post := range result.Items {
|
||
postIDs[i] = post.ID
|
||
}
|
||
isLikedMap, isFavoritedMap, _ := h.postService.GetPostInteractionStatus(c.Request.Context(), postIDs, currentUserID)
|
||
|
||
// 转换为响应结构
|
||
postResponses := dto.BuildPostsWithInteractionResponse(result.Items, isLikedMap, isFavoritedMap)
|
||
|
||
// 构建游标分页响应
|
||
cursorResp := &dto.PostCursorPageResponse{
|
||
Items: postResponses,
|
||
NextCursor: result.NextCursor,
|
||
PrevCursor: result.PrevCursor,
|
||
HasMore: result.HasMore,
|
||
}
|
||
|
||
response.Success(c, cursorResp)
|
||
}
|
||
|
||
// parseCursorRequest 解析游标分页请求参数
|
||
func (h *PostHandler) parseCursorRequest(c *gin.Context) *cursor.PageRequest {
|
||
cursorStr := c.Query("cursor")
|
||
direction := cursor.Direction(c.DefaultQuery("direction", "forward"))
|
||
pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
|
||
|
||
return cursor.NewPageRequest(cursorStr, direction, pageSize)
|
||
}
|