77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
package http
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import (
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"fmt"
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"net/http"
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"path/filepath"
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"github.com/gorilla/feeds"
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"github.com/mediocregopher/blog.mediocregopher.com/srv/http/apiutil"
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"github.com/mediocregopher/blog.mediocregopher.com/srv/post"
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)
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func (a *api) renderFeedHandler() http.Handler {
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return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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tag := r.FormValue("tag")
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var (
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posts []post.StoredPost
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err error
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)
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if tag == "" {
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posts, _, err = a.params.PostStore.Get(0, 20)
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} else {
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posts, err = a.params.PostStore.GetByTag(tag)
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}
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if err != nil {
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apiutil.InternalServerError(rw, r, fmt.Errorf("fetching recent posts: %w", err))
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return
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}
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author := &feeds.Author{
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Name: "mediocregopher",
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}
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publicURL := a.params.PublicURL.String()
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feed := feeds.Feed{
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Title: "mediocregopher's lil web corner",
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Link: &feeds.Link{Href: publicURL + "/"},
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Author: author,
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}
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for _, post := range posts {
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if post.PublishedAt.After(feed.Updated) {
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feed.Updated = post.PublishedAt
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}
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if post.LastUpdatedAt.After(feed.Updated) {
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feed.Updated = post.LastUpdatedAt
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}
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postURL := publicURL + filepath.Join("/posts", post.ID)
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item := &feeds.Item{
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Title: post.Title,
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Link: &feeds.Link{Href: postURL},
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Author: author,
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Description: post.Description,
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Id: postURL,
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Created: post.PublishedAt,
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}
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feed.Items = append(feed.Items, item)
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}
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if err := feed.WriteAtom(rw); err != nil {
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apiutil.InternalServerError(rw, r, fmt.Errorf("writing atom feed: %w", err))
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return
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}
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})
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}
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