package web import ( "bytes" "encoding/xml" "net/url" "owl-blogs/app" "owl-blogs/app/repository" "owl-blogs/domain/model" "sort" "time" "github.com/gofiber/fiber/v2" ) type RSS struct { XMLName xml.Name `xml:"rss"` Version string `xml:"version,attr"` Channel RSSChannel `xml:"channel"` } type RSSChannel struct { Title string `xml:"title"` Link string `xml:"link"` Description string `xml:"description"` Items []RSSItem `xml:"item"` } type RSSItem struct { Guid string `xml:"guid"` Title string `xml:"title"` Link string `xml:"link"` PubDate string `xml:"pubDate"` Description string `xml:"description"` } func RenderRSSFeed(config model.SiteConfig, entries []model.Entry) (string, error) { rss := RSS{ Version: "2.0", Channel: RSSChannel{ Title: config.Title, Link: config.FullUrl, Description: config.SubTitle, Items: make([]RSSItem, 0), }, } for _, entry := range entries { content := entry.Content() url, _ := url.JoinPath(config.FullUrl, "/posts/", entry.ID()) rss.Channel.Items = append(rss.Channel.Items, RSSItem{ Guid: url, Title: entry.Title(), Link: url, PubDate: entry.PublishedAt().Format(time.RFC1123Z), Description: string(content), }) } buf := new(bytes.Buffer) err := xml.NewEncoder(buf).Encode(rss) if err != nil { return "", err } return xml.Header + buf.String(), nil } type RSSHandler struct { configRepo repository.ConfigRepository entrySvc *app.EntryService } func NewRSSHandler(entryService *app.EntryService, configRepo repository.ConfigRepository) *RSSHandler { return &RSSHandler{entrySvc: entryService, configRepo: configRepo} } func (h *RSSHandler) Handle(c *fiber.Ctx) error { c.Set(fiber.HeaderContentType, fiber.MIMEApplicationXML) siteConfig := getSiteConfig(h.configRepo) entries, err := h.entrySvc.FindAllByType(&siteConfig.PrimaryListInclude, true, false) if err != nil { return err } // sort entries by date descending sort.Slice(entries, func(i, j int) bool { return entries[i].PublishedAt().After(*entries[j].PublishedAt()) }) rss, err := RenderRSSFeed(siteConfig, entries) if err != nil { return err } return c.SendString(rss) }