Noah
5b6712ea97
* Legacy-importer tool updates the DB primary key serial after migrating the posts, to be max(posts.id)+1 -- especially important for PostgreSQL and MySQL (SQLite3 correctly picked the next ID by default?) * Add blog archive page and RSS, Atom and JSON feeds for the blog. URLs are /blog.rss, /blog.atom and /blog.json
106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
package controllers
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import (
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"fmt"
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"mime"
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"net/http"
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"path/filepath"
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"strings"
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"time"
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"git.kirsle.net/apps/gophertype/pkg/common"
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"git.kirsle.net/apps/gophertype/pkg/glue"
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"git.kirsle.net/apps/gophertype/pkg/models"
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"git.kirsle.net/apps/gophertype/pkg/responses"
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"git.kirsle.net/apps/gophertype/pkg/settings"
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"github.com/gorilla/feeds"
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)
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func init() {
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glue.Register(glue.Endpoint{
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Path: "/blog.rss",
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Methods: []string{"GET"},
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Handler: RSSFeed,
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})
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glue.Register(glue.Endpoint{
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Path: "/blog.atom",
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Methods: []string{"GET"},
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Handler: RSSFeed,
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})
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glue.Register(glue.Endpoint{
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Path: "/blog.json",
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Methods: []string{"GET"},
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Handler: RSSFeed,
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})
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}
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// RSSFeed returns the RSS (or Atom) feed for the blog.
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func RSSFeed(w http.ResponseWriter, r *http.Request) {
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// Get the first (admin) user for the feed.
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admin, err := models.Users.FirstAdmin()
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if err != nil {
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responses.Error(w, r, http.StatusBadRequest, "Blog isn't ready yet.")
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return
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}
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feed := &feeds.Feed{
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Title: settings.Current.Title,
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Link: &feeds.Link{Href: settings.Current.BaseURL},
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Description: settings.Current.Description,
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Author: &feeds.Author{
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Name: admin.Name,
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Email: admin.Email,
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},
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Created: time.Now(),
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Items: []*feeds.Item{},
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}
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pp, err := models.Posts.GetIndexPosts(models.Public, 1, settings.Current.PostsPerPage)
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if err != nil {
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responses.Error(w, r, http.StatusInternalServerError, err.Error())
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return
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}
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for _, post := range pp.Posts {
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// If blog is NSFW, allow feed readers to skip the age gate.
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var urlSuffix string
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if settings.Current.NSFW {
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urlSuffix = "?over18=1"
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}
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item := &feeds.Item{
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Id: fmt.Sprintf("%d", post.ID),
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Title: post.Title,
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Link: &feeds.Link{Href: settings.Current.BaseURL + "/" + post.Fragment + urlSuffix},
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// Description is the HTML with relative links made absolute.
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Description: common.ReplaceRelativeLinksToAbsolute(settings.Current.BaseURL, string(post.HTML())),
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Created: post.CreatedAt,
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}
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// Attach the thumbnail?
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if post.Thumbnail != "" {
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item.Enclosure = &feeds.Enclosure{
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Url: common.ToAbsoluteURL(post.Thumbnail, settings.Current.BaseURL),
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Type: mime.TypeByExtension(filepath.Ext(post.Thumbnail)),
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}
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}
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feed.Items = append(feed.Items, item)
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}
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// What format to encode it in?
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if strings.Contains(r.URL.Path, ".atom") {
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atom, _ := feed.ToAtom()
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w.Header().Set("Content-Type", "application/atom+xml; encoding=utf-8")
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w.Write([]byte(atom))
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} else if strings.Contains(r.URL.Path, ".json") {
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jsonData, _ := feed.ToJSON()
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w.Header().Set("Content-Type", "application/json; encoding=utf-8")
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w.Write([]byte(jsonData))
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} else {
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rss, _ := feed.ToRss()
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w.Header().Set("Content-Type", "application/rss+xml; encoding=utf-8")
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w.Write([]byte(rss))
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}
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}
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