| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "encoding/xml" |
| 5 | "fmt" |
| 6 | "net/http" |
| 7 | "net/url" |
| 8 | "strings" |
| 9 | "time" |
| 10 | |
| 11 | "github.com/stevedylandev/andromeda/pkg/web" |
| 12 | ) |
| 13 | |
| 14 | const opmlPreviewPerFeed = 5 |
| 15 | |
| 16 | func (a *App) indexHandler(w http.ResponseWriter, r *http.Request) { |
| 17 | query := r.URL.Query().Get("url") |
| 18 | if query == "" { |
| 19 | query = r.URL.Query().Get("urls") |
| 20 | } |
| 21 | data := indexPageData{BaseURL: a.BaseURL} |
| 22 | if query != "" { |
| 23 | urls := splitAndTrim(query) |
| 24 | data.FeedURLs = urls |
| 25 | if len(urls) == 0 { |
| 26 | data.Error = "No URLs provided" |
| 27 | web.Render(a.Templates, w, "index.html", data, a.Log) |
| 28 | return |
| 29 | } |
| 30 | perFeed := 0 |
| 31 | if len(urls) == 1 && isOPMLURL(urls[0]) { |
| 32 | content, err := fetchOPMLDoc(r.Context(), urls[0]) |
| 33 | if err != nil { |
| 34 | a.Log.Warn("opml preview fetch failed", "url", urls[0], "err", err) |
| 35 | data.Error = "Could not load OPML" |
| 36 | web.Render(a.Templates, w, "index.html", data, a.Log) |
| 37 | return |
| 38 | } |
| 39 | entries := parseOPML(content) |
| 40 | if len(entries) == 0 { |
| 41 | data.Error = "No feeds found in OPML" |
| 42 | web.Render(a.Templates, w, "index.html", data, a.Log) |
| 43 | return |
| 44 | } |
| 45 | feedURLs := make([]string, 0, len(entries)) |
| 46 | for _, e := range entries { |
| 47 | if e.XMLURL != "" { |
| 48 | feedURLs = append(feedURLs, e.XMLURL) |
| 49 | } |
| 50 | } |
| 51 | urls = feedURLs |
| 52 | perFeed = opmlPreviewPerFeed |
| 53 | } |
| 54 | for _, item := range previewURLs(r.Context(), urls, perFeed, a.Log) { |
| 55 | data.Items = append(data.Items, templateItem{Title: item.Title, Link: item.Link, Author: item.Author, FormattedDate: formatDate(item.Published)}) |
| 56 | } |
| 57 | web.Render(a.Templates, w, "index.html", data, a.Log) |
| 58 | return |
| 59 | } |
| 60 | |
| 61 | items, err := listItems(a.DB, ListItemsFilter{Limit: 100}) |
| 62 | if err != nil { |
| 63 | a.Log.Error("index query failed", "err", err) |
| 64 | data.Error = "Error loading feeds. Please try again later." |
| 65 | web.Render(a.Templates, w, "index.html", data, a.Log) |
| 66 | return |
| 67 | } |
| 68 | for _, item := range items { |
| 69 | author := item.FeedTitle |
| 70 | if item.Author != nil && strings.TrimSpace(*item.Author) != "" { |
| 71 | author = item.FeedTitle + " - " + *item.Author |
| 72 | } |
| 73 | data.Items = append(data.Items, templateItem{Title: item.Title, Link: item.Link, Author: author, FormattedDate: formatDate(item.PublishedAt)}) |
| 74 | } |
| 75 | web.Render(a.Templates, w, "index.html", data, a.Log) |
| 76 | } |
| 77 | |
| 78 | func (a *App) feedsExportHandler(w http.ResponseWriter, r *http.Request) { |
| 79 | subs, err := listSubscriptions(a.DB) |
| 80 | if err != nil { |
| 81 | http.Error(w, "internal server error", http.StatusInternalServerError) |
| 82 | return |
| 83 | } |
| 84 | |
| 85 | switch r.URL.Query().Get("format") { |
| 86 | case "", "json": |
| 87 | rows := make([]map[string]any, 0, len(subs)) |
| 88 | for _, s := range subs { |
| 89 | rows = append(rows, map[string]any{ |
| 90 | "id": fmt.Sprintf("feed/%d", s.ID), |
| 91 | "title": s.Title, |
| 92 | "url": s.FeedURL, |
| 93 | "htmlUrl": nullStringValue(s.SiteURL), |
| 94 | }) |
| 95 | } |
| 96 | web.WriteJSON(w, http.StatusOK, map[string]any{"subscriptions": rows}) |
| 97 | case "opml": |
| 98 | a.writeOPMLExport(w, subs) |
| 99 | default: |
| 100 | web.WriteError(w, http.StatusBadRequest, "Invalid format. Use ?format=json or ?format=opml") |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | func (a *App) atomFeedHandler(w http.ResponseWriter, r *http.Request) { |
| 105 | items, err := listItems(a.DB, ListItemsFilter{Limit: 100}) |
| 106 | if err != nil { |
| 107 | http.Error(w, "internal server error", http.StatusInternalServerError) |
| 108 | return |
| 109 | } |
| 110 | type atomLink struct { |
| 111 | Href string `xml:"href,attr"` |
| 112 | Rel string `xml:"rel,attr,omitempty"` |
| 113 | Type string `xml:"type,attr,omitempty"` |
| 114 | } |
| 115 | type atomAuthor struct { |
| 116 | Name string `xml:"name"` |
| 117 | } |
| 118 | type atomSource struct { |
| 119 | Title string `xml:"title"` |
| 120 | } |
| 121 | type atomEntry struct { |
| 122 | Title string `xml:"title"` |
| 123 | Link atomLink `xml:"link"` |
| 124 | ID string `xml:"id"` |
| 125 | Updated string `xml:"updated"` |
| 126 | Published string `xml:"published"` |
| 127 | Author atomAuthor `xml:"author"` |
| 128 | Source atomSource `xml:"source"` |
| 129 | } |
| 130 | type atomFeed struct { |
| 131 | XMLName xml.Name `xml:"feed"` |
| 132 | Xmlns string `xml:"xmlns,attr"` |
| 133 | Title string `xml:"title"` |
| 134 | Links []atomLink `xml:"link"` |
| 135 | ID string `xml:"id"` |
| 136 | Updated string `xml:"updated"` |
| 137 | Entries []atomEntry `xml:"entry"` |
| 138 | } |
| 139 | |
| 140 | updated := time.Now().UTC().Format(time.RFC3339) |
| 141 | if len(items) > 0 { |
| 142 | updated = time.Unix(items[0].PublishedAt, 0).UTC().Format(time.RFC3339) |
| 143 | } |
| 144 | base := strings.TrimRight(a.BaseURL, "/") |
| 145 | feed := atomFeed{ |
| 146 | Xmlns: "http://www.w3.org/2005/Atom", |
| 147 | Title: "Feeds", |
| 148 | ID: base + "/feed.xml", |
| 149 | Updated: updated, |
| 150 | Links: []atomLink{{Href: base + "/feed.xml", Rel: "self", Type: "application/atom+xml"}, {Href: base}}, |
| 151 | } |
| 152 | for _, item := range items { |
| 153 | author := item.FeedTitle |
| 154 | if item.Author != nil && *item.Author != "" { |
| 155 | author = *item.Author |
| 156 | } |
| 157 | entryID := item.GUID |
| 158 | if strings.TrimSpace(entryID) == "" { |
| 159 | entryID = item.Link |
| 160 | } |
| 161 | published := time.Unix(item.PublishedAt, 0).UTC().Format(time.RFC3339) |
| 162 | feed.Entries = append(feed.Entries, atomEntry{Title: item.Title, Link: atomLink{Href: item.Link}, ID: entryID, Updated: published, Published: published, Author: atomAuthor{Name: author}, Source: atomSource{Title: item.FeedTitle}}) |
| 163 | } |
| 164 | body, _ := xml.MarshalIndent(feed, "", " ") |
| 165 | w.Header().Set("Content-Type", "application/atom+xml; charset=utf-8") |
| 166 | _, _ = w.Write([]byte(xml.Header)) |
| 167 | _, _ = w.Write(body) |
| 168 | } |
| 169 | |
| 170 | func (a *App) writeOPMLExport(w http.ResponseWriter, subs []Subscription) { |
| 171 | cats, _ := listCategories(a.DB) |
| 172 | catNames := map[int64]string{} |
| 173 | for _, c := range cats { |
| 174 | catNames[c.ID] = c.Name |
| 175 | } |
| 176 | grouped := map[string][]Subscription{} |
| 177 | for _, s := range subs { |
| 178 | key := "" |
| 179 | if s.CategoryID.Valid { |
| 180 | key = catNames[s.CategoryID.Int64] |
| 181 | } |
| 182 | grouped[key] = append(grouped[key], s) |
| 183 | } |
| 184 | type outline struct { |
| 185 | XMLName xml.Name `xml:"outline"` |
| 186 | Text string `xml:"text,attr,omitempty"` |
| 187 | Title string `xml:"title,attr,omitempty"` |
| 188 | Type string `xml:"type,attr,omitempty"` |
| 189 | XMLURL string `xml:"xmlUrl,attr,omitempty"` |
| 190 | HTMLURL string `xml:"htmlUrl,attr,omitempty"` |
| 191 | Nodes []outline `xml:"outline,omitempty"` |
| 192 | } |
| 193 | type opml struct { |
| 194 | XMLName xml.Name `xml:"opml"` |
| 195 | Version string `xml:"version,attr"` |
| 196 | Head struct { |
| 197 | Title string `xml:"title"` |
| 198 | DateCreated string `xml:"dateCreated"` |
| 199 | } `xml:"head"` |
| 200 | Body struct { |
| 201 | Nodes []outline `xml:"outline"` |
| 202 | } `xml:"body"` |
| 203 | } |
| 204 | doc := opml{Version: "2.0"} |
| 205 | doc.Head.Title = "Feeds" |
| 206 | doc.Head.DateCreated = time.Now().Format(time.RFC1123Z) |
| 207 | for category, rows := range grouped { |
| 208 | if category == "" { |
| 209 | for _, s := range rows { |
| 210 | doc.Body.Nodes = append(doc.Body.Nodes, outline{Text: s.Title, Title: s.Title, Type: "rss", XMLURL: s.FeedURL, HTMLURL: nullStringValue(s.SiteURL)}) |
| 211 | } |
| 212 | continue |
| 213 | } |
| 214 | group := outline{Text: category, Title: category} |
| 215 | for _, s := range rows { |
| 216 | group.Nodes = append(group.Nodes, outline{Text: s.Title, Title: s.Title, Type: "rss", XMLURL: s.FeedURL, HTMLURL: nullStringValue(s.SiteURL)}) |
| 217 | } |
| 218 | doc.Body.Nodes = append(doc.Body.Nodes, group) |
| 219 | } |
| 220 | body, _ := xml.MarshalIndent(doc, "", " ") |
| 221 | w.Header().Set("Content-Type", "application/xml") |
| 222 | w.Header().Set("Content-Disposition", `attachment; filename="feeds.opml"`) |
| 223 | _, _ = w.Write([]byte(xml.Header)) |
| 224 | _, _ = w.Write(body) |
| 225 | } |
| 226 | |
| 227 | func isOPMLURL(raw string) bool { |
| 228 | u, err := url.Parse(raw) |
| 229 | if err != nil { |
| 230 | return false |
| 231 | } |
| 232 | return strings.HasSuffix(strings.ToLower(u.Path), ".opml") |
| 233 | } |