|
| 1 | +package handler |
| 2 | + |
| 3 | +import ( |
| 4 | + "encoding/json" |
| 5 | + "fmt" |
| 6 | + "net/http" |
| 7 | + "strings" |
| 8 | + "time" |
| 9 | + |
| 10 | + "github.com/kingwrcy/moments/db" |
| 11 | + "github.com/kingwrcy/moments/vo" |
| 12 | + "github.com/labstack/echo/v4" |
| 13 | + "github.com/samber/do/v2" |
| 14 | + "gorm.io/gorm" |
| 15 | + |
| 16 | + "github.com/gomarkdown/markdown" |
| 17 | + "github.com/gomarkdown/markdown/parser" |
| 18 | + "github.com/gorilla/feeds" |
| 19 | + "github.com/microcosm-cc/bluemonday" |
| 20 | +) |
| 21 | + |
| 22 | +type RssHandler struct { |
| 23 | + base BaseHandler |
| 24 | + hc http.Client |
| 25 | +} |
| 26 | + |
| 27 | +func NewRssHandler(injector do.Injector) *RssHandler { |
| 28 | + return &RssHandler{ |
| 29 | + base: do.MustInvoke[BaseHandler](injector), |
| 30 | + hc: http.Client{}, |
| 31 | + } |
| 32 | +} |
| 33 | + |
| 34 | +func (r RssHandler) GetRss(c echo.Context) error { |
| 35 | + frontendHost := c.QueryParam("frontend_host") |
| 36 | + if frontendHost == "" { |
| 37 | + frontendHost = c.Request().Host // 如果未传递，则使用后端默认的 Host |
| 38 | + } |
| 39 | + rss, err := r.generateRss(frontendHost) |
| 40 | + if err != nil { |
| 41 | + return FailRespWithMsg(c, Fail, "RSS生成失败") |
| 42 | + } |
| 43 | + return c.String(http.StatusOK, rss) |
| 44 | +} |
| 45 | + |
| 46 | +func (r RssHandler) generateRss(host string) (string, error) { |
| 47 | + var ( |
| 48 | + memos []db.Memo |
| 49 | + user db.User |
| 50 | + sysConfig db.SysConfig |
| 51 | + sysConfigVO vo.FullSysConfigVO |
| 52 | + ) |
| 53 | + |
| 54 | + // 获取系统设置 |
| 55 | + r.base.db.First(&sysConfig) |
| 56 | + _ = json.Unmarshal([]byte(sysConfig.Content), &sysConfigVO) |
| 57 | + |
| 58 | + // 获取管理员信息 |
| 59 | + r.base.db.First(&user, "Username = ?", "admin") |
| 60 | + |
| 61 | + // 使用自定义RSS |
| 62 | + if sysConfigVO.Rss != "" { |
| 63 | + return "", nil |
| 64 | + } |
| 65 | + |
| 66 | + // 查询动态 |
| 67 | + tx := r.base.db.Preload("User", func(x *gorm.DB) *gorm.DB { |
| 68 | + return x.Select("username", "nickname", "id") |
| 69 | + }).Where("pinned = 0") |
| 70 | + tx.Order("createdAt desc").Limit(10).Find(&memos) |
| 71 | + |
| 72 | + feed := generateFeed(memos, &sysConfigVO, &user, host) |
| 73 | + |
| 74 | + return feed.ToRss() |
| 75 | + |
| 76 | + // // 将RSS内容写入/rss/default_rss.xml |
| 77 | + // target := "/rss/default_rss.xml" |
| 78 | + // dir := filepath.Dir(target) |
| 79 | + // if err := os.MkdirAll(dir, os.ModePerm); err != nil { |
| 80 | + // return "", fmt.Errorf("创建目录失败: %w", err) |
| 81 | + // } |
| 82 | + // if err := os.WriteFile(target, []byte(rss), 0644); err != nil { |
| 83 | + // return "", fmt.Errorf("写入RSS失败: %w", err) |
| 84 | + // } |
| 85 | +} |
| 86 | + |
| 87 | +func generateFeed(memos []db.Memo, sysConfigVO *vo.FullSysConfigVO, user *db.User, host string) *feeds.Feed { |
| 88 | + now := time.Now() |
| 89 | + feed := &feeds.Feed{ |
| 90 | + Title: sysConfigVO.Title, |
| 91 | + Link: &feeds.Link{Href: fmt.Sprintf("%s/rss", host)}, |
| 92 | + Description: user.Slogan, |
| 93 | + Author: &feeds.Author{Name: user.Nickname}, |
| 94 | + Created: now, |
| 95 | + } |
| 96 | + |
| 97 | + feed.Items = []*feeds.Item{} |
| 98 | + for _, memo := range memos { |
| 99 | + feed.Items = append(feed.Items, &feeds.Item{ |
| 100 | + Title: fmt.Sprintf("Memo #%d", memo.Id), |
| 101 | + Link: &feeds.Link{Href: fmt.Sprintf("%s/memo/%d", host, memo.Id)}, |
| 102 | + Description: parseMarkdownToHtml(getContentWithExt(memo, host)), |
| 103 | + Author: &feeds.Author{Name: memo.User.Nickname}, |
| 104 | + Created: *memo.CreatedAt, |
| 105 | + Updated: *memo.UpdatedAt, |
| 106 | + }) |
| 107 | + } |
| 108 | + return feed |
| 109 | +} |
| 110 | + |
| 111 | +func parseMarkdownToHtml(md string) string { |
| 112 | + // 启用扩展 |
| 113 | + extensions := parser.NoIntraEmphasis | // 忽略单词内部的强调标记 |
| 114 | + parser.Tables | // 解析表格语法 |
| 115 | + parser.FencedCode | // 解析围栏代码块 |
| 116 | + parser.Strikethrough | // 支持删除线语法 |
| 117 | + parser.HardLineBreak | // 将换行符（\n）转换为 <br> 标签 |
| 118 | + parser.Footnotes | // 支持脚注语法 |
| 119 | + parser.MathJax | // 支持 MathJax 数学公式语法 |
| 120 | + parser.SuperSubscript | // 支持上标和下标语法 |
| 121 | + parser.EmptyLinesBreakList // 允许两个空行中断列表 |
| 122 | + p := parser.NewWithExtensions(extensions) |
| 123 | + |
| 124 | + // 将 Markdown 解析为 HTML |
| 125 | + html := markdown.ToHTML([]byte(md), p, nil) |
| 126 | + |
| 127 | + // 清理 HTML（防止 XSS 攻击） |
| 128 | + cleanHTML := bluemonday.UGCPolicy().SanitizeBytes(html) |
| 129 | + |
| 130 | + return string(cleanHTML) |
| 131 | +} |
| 132 | + |
| 133 | +func getContentWithExt(memo db.Memo, host string) string { |
| 134 | + content := memo.Content |
| 135 | + |
| 136 | + // 处理链接 |
| 137 | + if memo.ExternalUrl != "" { |
| 138 | + content += fmt.Sprintf("\n\n[%s](%s)", memo.ExternalTitle, memo.ExternalUrl) |
| 139 | + } |
| 140 | + |
| 141 | + // 处理图片 |
| 142 | + if memo.Imgs != "" { |
| 143 | + imgs := strings.Split(memo.Imgs, ",") |
| 144 | + for _, img := range imgs { |
| 145 | + if img[:7] == "/upload" { |
| 146 | + img = host + img |
| 147 | + } |
| 148 | + content += fmt.Sprintf("\n\n", img, img) |
| 149 | + } |
| 150 | + } |
| 151 | + |
| 152 | + var ext vo.MemoExt |
| 153 | + err := json.Unmarshal([]byte(memo.Ext), &ext) |
| 154 | + if err != nil { |
| 155 | + ext = vo.MemoExt{ |
| 156 | + Music: vo.Music{}, |
| 157 | + Video: vo.Video{}, |
| 158 | + DoubanBook: vo.DoubanBook{}, |
| 159 | + DoubanMovie: vo.DoubanMovie{}, |
| 160 | + } |
| 161 | + } |
| 162 | + |
| 163 | + // 处理音乐 |
| 164 | + if ext.Music.Server != "" { |
| 165 | + var title, url string |
| 166 | + switch ext.Music.Server { |
| 167 | + // 网易云音乐 |
| 168 | + case "netease": |
| 169 | + title = "网易云音乐" |
| 170 | + switch ext.Music.Type { |
| 171 | + case "search": |
| 172 | + ext.Music.ID = "/m/?s=" + ext.Music.ID |
| 173 | + default: |
| 174 | + ext.Music.ID = "?id=" + ext.Music.ID |
| 175 | + } |
| 176 | + url = fmt.Sprintf("https://music.163.com/#/%s%s", |
| 177 | + ext.Music.Type, ext.Music.ID) |
| 178 | + // QQ音乐 |
| 179 | + case "tencent": |
| 180 | + title = "QQ音乐" |
| 181 | + switch ext.Music.Type { |
| 182 | + case "song": |
| 183 | + url = fmt.Sprintf("https://y.qq.com/n/ryqq/songDetail/%s", ext.Music.ID) |
| 184 | + case "playlist": |
| 185 | + url = fmt.Sprintf("https://y.qq.com/n/ryqq/playlist/%s", ext.Music.ID) |
| 186 | + case "album": |
| 187 | + url = fmt.Sprintf("https://y.qq.com/n/ryqq/albumDetail/%s", ext.Music.ID) |
| 188 | + case "search": |
| 189 | + url = fmt.Sprintf("https://y.qq.com/n/ryqq/search?w=%s&t=song", ext.Music.ID) |
| 190 | + case "artist": |
| 191 | + url = fmt.Sprintf("https://y.qq.com/n/ryqq/singer/%s", ext.Music.ID) |
| 192 | + default: |
| 193 | + } |
| 194 | + // 酷狗音乐 |
| 195 | + case "kugou": |
| 196 | + title = "酷狗音乐" |
| 197 | + switch ext.Music.Type { |
| 198 | + case "song": |
| 199 | + url = fmt.Sprintf("https://www.kugou.com/mixsong/%s.html", ext.Music.ID) |
| 200 | + case "playlist": |
| 201 | + url = fmt.Sprintf("https://www.kugou.com/songlist/%s/", ext.Music.ID) |
| 202 | + case "album": |
| 203 | + url = fmt.Sprintf("https://www.kugou.com/album/info/%s/", ext.Music.ID) |
| 204 | + case "search": |
| 205 | + url = fmt.Sprintf("https://www.kugou.com/yy/html/search.html#searchType=song&searchKeyWord=%s", ext.Music.ID) |
| 206 | + case "artist": |
| 207 | + url = fmt.Sprintf("https://www.kugou.com/singer/info/%s/", ext.Music.ID) |
| 208 | + default: |
| 209 | + } |
| 210 | + // 虾米音乐 已停止服务 |
| 211 | + case "xiami": |
| 212 | + // 百度音乐 不可用 |
| 213 | + case "baidu": |
| 214 | + default: |
| 215 | + } |
| 216 | + |
| 217 | + if url != "" { |
| 218 | + content += fmt.Sprintf("\n\n[%s](%s)", title, url) |
| 219 | + } |
| 220 | + } |
| 221 | + |
| 222 | + // 处理视频 |
| 223 | + if ext.Video.Type != "" { |
| 224 | + var title, url string |
| 225 | + switch ext.Video.Type { |
| 226 | + case "online": |
| 227 | + title = "在线视频" |
| 228 | + case "bilibili": |
| 229 | + title = "Bilibili视频" |
| 230 | + case "youtube": |
| 231 | + title = "Youtube视频" |
| 232 | + } |
| 233 | + url = ext.Video.Value |
| 234 | + if ext.Video.Type == "online" && url[:7] == "/upload" { |
| 235 | + url = host + url |
| 236 | + } |
| 237 | + content += fmt.Sprintf("\n\n[%s](%s)", title, url) |
| 238 | + } |
| 239 | + |
| 240 | + // 处理豆瓣 |
| 241 | + if ext.DoubanBook.Url != "" { |
| 242 | + content += fmt.Sprintf("\n\n[%s](%s)", ext.DoubanBook.Title, ext.DoubanBook.Url) |
| 243 | + } |
| 244 | + if ext.DoubanMovie.Url != "" { |
| 245 | + content += fmt.Sprintf("\n\n[%s](%s)", ext.DoubanMovie.Title, ext.DoubanMovie.Url) |
| 246 | + } |
| 247 | + |
| 248 | + return content |
| 249 | +} |
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