feat: 站点媒体库与移动端底部导航，服务测试补强
- 新增媒体库：media_library/media_thumbs 服务（WebP 缩略图）、管理端 media 页面 - 移动端底部导航 MobileTabBar 替换 MobilePostBar - 旧数据导入增强与测试、路由与登录会话/板块侧边栏测试补强 - site-doc 组件精简（移除 Breadcrumb），文档新增迁移公告说明
This commit is contained in:
388
backend/service/media_library.go
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388
backend/service/media_library.go
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package service
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import (
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"fmt"
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"os"
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"path/filepath"
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"sort"
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"strings"
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"time"
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"github.com/freefire/jiang13-bbs/model"
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)
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// 媒体库（管理后台）：盘点站点内全部图片资源。
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// 数据源 = uploads 五个分类目录的磁盘扫描 + attachments 表元数据合并：
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// - 旧站导入图 / 背景图 / 广告素材 / 品牌 Logo 落盘但无附件记录，只有磁盘扫描能覆盖
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// - 附件记录（头像、帖子插图）补充上传者、创建时间等元数据；远程存储对象（/api/media/）仅存在于库中
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// 同名（去扩展名）同时存在原图与 WebP 时只展示 WebP，原图 URL 挂在 OriginalURL 供查看。
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// 媒体库分类：目录名即分类键，前端 tab 直接使用
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var mediaLibraryCategories = []struct {
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Key string // 分类键（image/avatar/background/ads/brand）
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Dir string // uploads 下的子目录
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Name string // 展示名
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}{
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{"image", "images", "帖子插图"},
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{"avatar", "avatars", "用户头像"},
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{"background", "backgrounds", "站点背景"},
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{"ads", "ads", "广告素材"},
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{"brand", "brand", "品牌资源"},
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}
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// MediaLibraryItem 媒体库条目
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type MediaLibraryItem struct {
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URL string `json:"url"` // 展示地址（有 WebP 时为 WebP）
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OriginalURL string `json:"original_url,omitempty"` // 同名原图（仅当原图与 WebP 并存）
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Category string `json:"category"` // image/avatar/background/ads/brand
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CategoryName string `json:"category_name"`
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Name string `json:"name"` // 文件名（含扩展名）
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MIME string `json:"mime"`
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Size int64 `json:"size"`
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Width int `json:"width"`
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Height int `json:"height"`
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Uploader string `json:"uploader,omitempty"` // 上传者昵称（取自附件记录，无记录为空）
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UploadedAt *time.Time `json:"uploaded_at,omitempty"`
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SourceURL string `json:"source_url,omitempty"` // 来源回链（帖子/评论锚点/用户主页）
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SourceLabel string `json:"source_label,omitempty"` // 来源描述（如：帖子《…》下的评论）
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}
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// AdminMediaLibrary 全站图片盘点：磁盘扫描 + 附件元数据合并，按时间倒序。
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// 返回条目列表与各分类计数（含全部计数由前端按列表累加）。
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func (s *UploadService) AdminMediaLibrary() ([]MediaLibraryItem, map[string]int, error) {
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// 附件元数据索引：URL → 记录（联出上传者昵称）
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type attMeta struct {
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Kind string
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URL string
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MIME string
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Size int
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Width int
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Height int
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Nickname string
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Username string
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CreatedAt time.Time
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}
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var rows []attMeta
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if err := s.db.Table("attachments").
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Select("attachments.kind, attachments.url, attachments.mime, attachments.size, attachments.width, attachments.height, attachments.created_at, users.nickname, users.username").
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Joins("LEFT JOIN users ON users.id = attachments.user_id").
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Scan(&rows).Error; err != nil {
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return nil, nil, err
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}
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metaByURL := make(map[string]attMeta, len(rows))
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// 远程存储对象（/api/media/）不在磁盘上，直接作为条目加入
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items := make([]MediaLibraryItem, 0, len(rows))
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categoryName := func(key string) string {
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for _, cat := range mediaLibraryCategories {
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if cat.Key == key {
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return cat.Name
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}
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}
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return key
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}
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for _, r := range rows {
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metaByURL[r.URL] = r // 本地文件在磁盘扫描时按 URL 合并元数据
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if !strings.HasPrefix(r.URL, "/api/media/") {
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continue
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}
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uploader := r.Nickname
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if uploader == "" {
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uploader = r.Username
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}
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cat := r.Kind
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if cat != model.AttachmentKindImage && cat != model.AttachmentKindAvatar {
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continue // 未知 kind 不进媒体库
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}
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ca := r.CreatedAt
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items = append(items, MediaLibraryItem{
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URL: r.URL, Category: cat, CategoryName: categoryName(cat),
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Name: strings.TrimPrefix(r.URL, "/api/media/"), MIME: r.MIME,
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Size: int64(r.Size), Width: r.Width, Height: r.Height,
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Uploader: uploader, UploadedAt: &ca,
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})
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}
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// 磁盘扫描五类目录；同名（去扩展名）成组，WebP 优先展示、原图挂 OriginalURL
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type group struct {
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webp *MediaLibraryItem
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original *MediaLibraryItem
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}
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for _, cat := range mediaLibraryCategories {
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dir := filepath.Join(s.dir, cat.Dir)
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entries, err := os.ReadDir(dir)
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if err != nil {
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continue // 目录不存在视为空
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}
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groups := map[string]*group{}
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for _, e := range entries {
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if e.IsDir() || strings.HasSuffix(e.Name(), ".partial") {
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continue
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}
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ext := strings.ToLower(filepath.Ext(e.Name()))
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switch ext {
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case ".jpg", ".jpeg", ".png", ".webp", ".gif":
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default:
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continue
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}
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url := "/uploads/" + cat.Dir + "/" + e.Name()
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item := MediaLibraryItem{
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URL: url, Category: cat.Key, CategoryName: cat.Name,
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Name: e.Name(),
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MIME: map[string]string{
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".jpg": "image/jpeg", ".jpeg": "image/jpeg", ".png": "image/png",
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".webp": "image/webp", ".gif": "image/gif",
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}[ext],
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}
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if info, err := e.Info(); err == nil {
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item.Size = info.Size()
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mt := info.ModTime()
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item.UploadedAt = &mt
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}
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if m, ok := metaByURL[url]; ok {
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// 附件记录有上传者与准确创建时间，覆盖磁盘信息
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uploader := m.Nickname
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if uploader == "" {
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uploader = m.Username
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}
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ca := m.CreatedAt
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item.Uploader = uploader
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item.UploadedAt = &ca
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if m.Size > 0 {
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item.Size = int64(m.Size)
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}
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if m.Width > 0 {
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item.Width, item.Height = m.Width, m.Height
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}
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}
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// 无尺寸记录时读图片头解析宽高（失败不阻断，保持 0）
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if item.Width == 0 && item.Size > 0 && item.Size <= 20<<20 {
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if f, err := os.Open(filepath.Join(dir, e.Name())); err == nil {
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w, h, derr := decodeImageSizeReader(f, item.MIME)
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_ = f.Close()
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if derr == nil {
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item.Width, item.Height = w, h
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}
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}
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}
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stem := strings.TrimSuffix(e.Name(), filepath.Ext(e.Name()))
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g := groups[stem]
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if g == nil {
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g = &group{}
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groups[stem] = g
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}
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if ext == ".webp" {
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g.webp = &item
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} else if g.original == nil {
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g.original = &item
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}
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}
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for _, g := range groups {
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switch {
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case g.webp != nil && g.original != nil:
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// 原图与 WebP 并存：只展示 WebP，原图作 original_url
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g.webp.OriginalURL = g.original.URL
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if g.webp.Size == 0 {
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g.webp.Size = g.original.Size
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}
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items = append(items, *g.webp)
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case g.webp != nil:
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items = append(items, *g.webp)
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default:
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items = append(items, *g.original)
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}
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}
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}
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sort.Slice(items, func(i, j int) bool {
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ti, tj := items[i].UploadedAt, items[j].UploadedAt
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switch {
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case ti == nil && tj == nil:
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return items[i].URL < items[j].URL
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case ti == nil:
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return false
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case tj == nil:
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return true
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}
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return ti.After(*tj)
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})
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counts := map[string]int{}
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for _, it := range items {
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counts[it.Category]++
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}
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s.attachMediaSources(items)
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return items, counts, nil
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}
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// attachMediaSources 为条目补来源回链：
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// - 头像：users.avatar 精确匹配 → 用户主页
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// - 其余：分块 LIKE 扫描帖子/评论正文（展示 URL 与同名原图都参与匹配），帖子优先于评论
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//
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// 内容 LIKE 无索引，纯顺序扫描，但仅管理端低频调用；分块 OR 控制往返次数。
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func (s *UploadService) attachMediaSources(items []MediaLibraryItem) {
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urlSet := map[string]bool{}
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for _, it := range items {
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for _, u := range []string{it.URL, it.OriginalURL} {
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if strings.HasPrefix(u, "/uploads/") {
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urlSet[u] = true
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}
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}
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}
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if len(urlSet) == 0 {
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return
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}
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urls := make([]string, 0, len(urlSet))
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for u := range urlSet {
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urls = append(urls, u)
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}
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type postRef struct {
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id uint
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title string
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}
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postByURL := map[string]postRef{}
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type commentRef struct {
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id, postID uint
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}
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commentByURL := map[string]commentRef{}
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for i := 0; i < len(urls); i += 40 {
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end := i + 40
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if end > len(urls) {
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end = len(urls)
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}
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chunk := urls[i:end]
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conds := make([]string, len(chunk))
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args := make([]any, len(chunk))
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for j, u := range chunk {
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conds[j] = "content LIKE ?"
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args[j] = "%" + u + "%"
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}
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where := strings.Join(conds, " OR ")
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var prows []struct {
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ID uint
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Title string
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Content string
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}
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if err := s.db.Model(&model.Post{}).Select("id, title, content").
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Where(where, args...).Order("id ASC").Limit(600).Scan(&prows).Error; err != nil {
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return
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}
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for _, p := range prows {
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for _, u := range chunk {
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if strings.Contains(p.Content, u) {
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if _, ok := postByURL[u]; !ok {
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postByURL[u] = postRef{id: p.ID, title: p.Title}
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}
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}
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}
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}
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var crows []struct {
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ID uint
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PostID uint
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Content string
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}
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if err := s.db.Model(&model.Comment{}).Select("id, post_id, content").
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Where(where, args...).Order("id ASC").Limit(600).Scan(&crows).Error; err != nil {
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return
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}
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for _, cm := range crows {
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for _, u := range chunk {
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if strings.Contains(cm.Content, u) {
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if _, ok := commentByURL[u]; !ok {
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commentByURL[u] = commentRef{id: cm.ID, postID: cm.PostID}
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}
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}
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}
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}
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}
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// 评论来源要带宿主帖子标题，一次性补齐
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postTitle := func(id uint) string {
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var p model.Post
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if err := s.db.Select("id, title").First(&p, id).Error; err != nil {
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return ""
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}
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return p.Title
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}
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commentPostTitle := map[uint]string{}
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for _, cm := range commentByURL {
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if _, ok := commentPostTitle[cm.postID]; !ok {
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commentPostTitle[cm.postID] = postTitle(cm.postID)
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}
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}
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// 头像使用者：users.avatar 精确匹配（同一头像多人使用时取最早的用户）
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userByAvatar := map[string]struct {
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ID uint
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Nickname, Username string
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}{}
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var urows []struct {
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ID uint
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Nickname string
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Username string
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Avatar string
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}
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if err := s.db.Model(&model.User{}).Select("id, nickname, username, avatar").
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Where("avatar IN ?", urls).Order("id ASC").Find(&urows).Error; err == nil {
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for _, u := range urows {
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if _, ok := userByAvatar[u.Avatar]; !ok {
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userByAvatar[u.Avatar] = struct {
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ID uint
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Nickname, Username string
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}{ID: u.ID, Nickname: u.Nickname, Username: u.Username}
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}
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}
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}
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truncate := func(s string, n int) string {
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r := []rune(s)
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if len(r) <= n {
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return s
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}
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return string(r[:n]) + "…"
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}
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postLabel := func(p postRef) string {
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title := p.title
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if title == "" {
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title = fmt.Sprintf("#%d", p.id)
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}
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return "帖子《" + truncate(title, 40) + "》"
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}
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for i := range items {
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it := &items[i]
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// 头像使用者优先（头像正文引用场景极少）
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if u, ok := userByAvatar[it.URL]; ok {
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name := u.Nickname
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if name == "" {
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name = u.Username
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}
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it.SourceURL = fmt.Sprintf("/u/%d", u.ID)
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it.SourceLabel = "@" + name + " 的头像"
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continue
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}
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for _, u := range []string{it.URL, it.OriginalURL} {
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if u == "" || it.SourceURL != "" {
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continue
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}
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if p, ok := postByURL[u]; ok {
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it.SourceURL = fmt.Sprintf("/post/%d", p.id)
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it.SourceLabel = postLabel(p)
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break
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}
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if cm, ok := commentByURL[u]; ok {
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it.SourceURL = fmt.Sprintf("/post/%d#comment-%d", cm.postID, cm.id)
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title := commentPostTitle[cm.postID]
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if title != "" {
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it.SourceLabel = "帖子《" + truncate(title, 40) + "》下的评论"
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} else {
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it.SourceLabel = "帖子评论"
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}
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break
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}
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}
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}
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}
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Reference in New Issue
Block a user