322 lines
8.1 KiB
Go
322 lines
8.1 KiB
Go
package controller
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import (
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"html/template"
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"net/http"
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"strconv"
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"metazone.cc/metalab/internal/common"
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"metazone.cc/metalab/internal/model"
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"github.com/gin-gonic/gin"
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)
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// PostController 帖子控制器（SSR 页面 + API）
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type PostController struct {
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postService postUseCase
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}
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// NewPostController 构造函数
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func NewPostController(ps postUseCase) *PostController {
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return &PostController{postService: ps}
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}
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// ListPage 帖子列表页
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func (ctrl *PostController) ListPage(c *gin.Context) {
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keyword := c.Query("keyword")
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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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posts, total, err := ctrl.postService.List(keyword, page, pageSize)
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if err != nil {
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c.HTML(http.StatusOK, "posts/index.html", common.BuildPageData(c, gin.H{
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"Title": "社区帖子",
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"Error": "加载帖子列表失败",
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}))
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return
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}
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if posts == nil {
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posts = []model.Post{}
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}
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p := common.Pagination{Page: page, PageSize: pageSize}
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p.DefaultPagination()
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totalPages := int((total + int64(p.PageSize) - 1) / int64(p.PageSize))
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prevPage := p.Page - 1
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if prevPage < 1 { prevPage = 1 }
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nextPage := p.Page + 1
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if nextPage > totalPages { nextPage = totalPages }
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c.HTML(http.StatusOK, "posts/index.html", common.BuildPageData(c, gin.H{
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"Title": "社区帖子",
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"Posts": posts,
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"Total": total,
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"Page": p.Page,
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"TotalPages": totalPages,
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"PrevPage": prevPage,
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"NextPage": nextPage,
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"Keyword": keyword,
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"ExtraCSS": "/static/css/posts.css",
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}))
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}
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// ShowPage 帖子详情页
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func (ctrl *PostController) ShowPage(c *gin.Context) {
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id, err := strconv.ParseUint(c.Param("id"), 10, 64)
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if err != nil {
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c.HTML(http.StatusNotFound, "posts/404.html", common.BuildPageData(c, gin.H{
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"Title": "未找到",
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}))
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return
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}
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post, err := ctrl.postService.GetByID(uint(id))
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if err != nil {
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c.HTML(http.StatusNotFound, "posts/404.html", common.BuildPageData(c, gin.H{
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"Title": "未找到",
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}))
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return
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}
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// 获取当前用户信息
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var uid uint
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var role string
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if uidObj, exists := c.Get("uid"); exists {
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uid, _ = uidObj.(uint)
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}
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if roleObj, exists := c.Get("role"); exists {
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role, _ = roleObj.(string)
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}
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// 仅 approved 公开可见（作者本人 + moderator+ 可预览其他状态）
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if post.Status != model.PostStatusApproved {
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isAuthor := uid == post.UserID
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isModerator := model.HasMinRole(role, model.RoleModerator)
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if !isAuthor && !isModerator {
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c.HTML(http.StatusNotFound, "posts/404.html", common.BuildPageData(c, gin.H{
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"Title": "未找到",
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}))
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return
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}
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}
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c.HTML(http.StatusOK, "posts/show.html", common.BuildPageData(c, gin.H{
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"Title": post.Title,
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"Post": post,
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"PostBodyHTML": template.HTML(post.BodyHTML),
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"UID": uid,
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"ExtraCSS": "/static/css/posts.css",
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}))
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}
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// NewPage 发帖页面
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func (ctrl *PostController) NewPage(c *gin.Context) {
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c.HTML(http.StatusOK, "posts/new.html", common.BuildPageData(c, gin.H{
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"Title": "撰写帖子",
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"ExtraCSS": "/static/css/posts.css",
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"ExtraJS": "/static/js/editor.js",
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}))
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}
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// EditPage 编辑页面
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func (ctrl *PostController) EditPage(c *gin.Context) {
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id, err := strconv.ParseUint(c.Param("id"), 10, 64)
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if err != nil {
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c.HTML(http.StatusNotFound, "posts/404.html", common.BuildPageData(c, gin.H{
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"Title": "未找到",
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}))
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return
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}
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post, err := ctrl.postService.GetByID(uint(id))
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if err != nil || post.Status == model.PostStatusPending || post.Status == model.PostStatusLocked {
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c.HTML(http.StatusNotFound, "posts/404.html", common.BuildPageData(c, gin.H{
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"Title": "未找到或无法编辑",
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}))
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return
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}
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c.HTML(http.StatusOK, "posts/new.html", common.BuildPageData(c, gin.H{
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"Title": "编辑帖子",
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"Post": post,
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"ExtraCSS": "/static/css/posts.css",
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"ExtraJS": "/static/js/editor.js",
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}))
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}
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// Create API 发帖
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func (ctrl *PostController) Create(c *gin.Context) {
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uidObj, _ := c.Get("uid")
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uid, ok := uidObj.(uint)
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if !ok {
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common.Error(c, http.StatusUnauthorized, "请先登录")
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return
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}
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var req model.PostCreateRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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common.Error(c, http.StatusBadRequest, "标题和正文不能为空")
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return
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}
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post, err := ctrl.postService.Create(uid, req.Title, req.Body)
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if err != nil {
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common.Error(c, http.StatusInternalServerError, "发帖失败")
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return
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}
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common.OkWithMessage(c, post, "发布成功")
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}
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// Update API 编辑帖子
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func (ctrl *PostController) Update(c *gin.Context) {
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uidObj, _ := c.Get("uid")
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uid, _ := uidObj.(uint)
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id, err := strconv.ParseUint(c.Param("id"), 10, 64)
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if err != nil {
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common.Error(c, http.StatusBadRequest, "无效的帖子 ID")
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return
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}
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var req model.PostUpdateRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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common.Error(c, http.StatusBadRequest, "标题和正文不能为空")
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return
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}
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// 权限检查：取帖子归属
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post, err := ctrl.postService.GetByID(uint(id))
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if err != nil {
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common.Error(c, http.StatusNotFound, "帖子不存在")
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return
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}
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roleObj, _ := c.Get("role")
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role, _ := roleObj.(string)
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if post.UserID != uid && !model.HasMinRole(role, model.RoleModerator) {
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common.Error(c, http.StatusForbidden, "无权编辑此帖子")
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return
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}
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if err := ctrl.postService.Update(uint(id), req.Title, req.Body); err != nil {
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common.Error(c, http.StatusBadRequest, err.Error())
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return
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}
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common.OkMessage(c, "编辑成功")
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}
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// Delete API 删除帖子
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func (ctrl *PostController) Delete(c *gin.Context) {
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uidObj, _ := c.Get("uid")
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uid, _ := uidObj.(uint)
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id, err := strconv.ParseUint(c.Param("id"), 10, 64)
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if err != nil {
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common.Error(c, http.StatusBadRequest, "无效的帖子 ID")
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return
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}
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post, err := ctrl.postService.GetByID(uint(id))
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if err != nil {
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common.Error(c, http.StatusNotFound, "帖子不存在")
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return
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}
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roleObj, _ := c.Get("role")
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role, _ := roleObj.(string)
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if post.UserID != uid && !model.HasMinRole(role, model.RoleModerator) {
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common.Error(c, http.StatusForbidden, "无权删除此帖子")
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return
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}
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if err := ctrl.postService.Delete(uint(id)); err != nil {
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common.Error(c, http.StatusInternalServerError, "删除失败")
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return
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}
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common.OkMessage(c, "删除成功")
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}
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// Submit API 提交审核
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func (ctrl *PostController) Submit(c *gin.Context) {
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id, err := strconv.ParseUint(c.Param("id"), 10, 64)
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if err != nil {
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common.Error(c, http.StatusBadRequest, "无效的帖子 ID")
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return
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}
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if err := ctrl.postService.SubmitForAudit(uint(id)); err != nil {
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common.Error(c, http.StatusBadRequest, err.Error())
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return
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}
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common.OkMessage(c, "已提交审核")
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}
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// ListAPI 帖子列表 JSON API
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func (ctrl *PostController) ListAPI(c *gin.Context) {
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keyword := c.Query("keyword")
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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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posts, total, err := ctrl.postService.List(keyword, page, pageSize)
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if err != nil {
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common.Error(c, http.StatusInternalServerError, "获取帖子列表失败")
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return
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}
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if posts == nil {
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posts = []model.Post{}
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}
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p := common.Pagination{Page: page, PageSize: pageSize}
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p.DefaultPagination()
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totalPages := int((total + int64(p.PageSize) - 1) / int64(p.PageSize))
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common.Ok(c, model.PostListResult{
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Items: posts,
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Total: total,
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Page: p.Page,
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TotalPages: totalPages,
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})
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}
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// ShowAPI 帖子详情 JSON API
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func (ctrl *PostController) ShowAPI(c *gin.Context) {
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id, err := strconv.ParseUint(c.Param("id"), 10, 64)
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if err != nil {
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common.Error(c, http.StatusBadRequest, "无效的帖子 ID")
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return
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}
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post, err := ctrl.postService.GetByID(uint(id))
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if err != nil {
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common.Error(c, http.StatusNotFound, "帖子不存在")
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return
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}
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common.Ok(c, post)
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}
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// PreviewAPI Markdown 预览 API
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func (ctrl *PostController) PreviewAPI(c *gin.Context) {
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var req struct {
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Body string `json:"body" binding:"required"`
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}
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if err := c.ShouldBindJSON(&req); err != nil {
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common.Error(c, http.StatusBadRequest, "正文不能为空")
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return
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}
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html, err := ctrl.postService.RenderMarkdown(req.Body)
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if err != nil {
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common.Error(c, http.StatusInternalServerError, "渲染失败")
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return
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}
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common.Ok(c, gin.H{"html": html})
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}
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