mirror of https://github.com/jlelse/GoBlog
Simple blogging system written in Go
https://goblog.app
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
368 lines
10 KiB
368 lines
10 KiB
package main |
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import ( |
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"context" |
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"errors" |
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"fmt" |
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"net/http" |
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"reflect" |
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"strings" |
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"time" |
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"github.com/go-chi/chi/v5" |
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"github.com/vcraescu/go-paginator" |
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"go.goblog.app/app/pkgs/bufferpool" |
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) |
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var errPostNotFound = errors.New("post not found") |
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type post struct { |
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Path string |
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Content string |
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Published string |
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Updated string |
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Parameters map[string][]string |
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Blog string |
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Section string |
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Status postStatus |
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Priority int |
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// Not persisted |
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Slug string |
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RenderedTitle string |
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} |
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type postStatus string |
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const ( |
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statusDeletedSuffix string = "-deleted" |
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statusNil postStatus = "" |
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statusPublished postStatus = "published" |
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statusPublishedDeleted postStatus = "published-deleted" |
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statusDraft postStatus = "draft" |
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statusDraftDeleted postStatus = "draft-deleted" |
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statusPrivate postStatus = "private" |
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statusPrivateDeleted postStatus = "private-deleted" |
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statusUnlisted postStatus = "unlisted" |
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statusUnlistedDeleted postStatus = "unlisted-deleted" |
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statusScheduled postStatus = "scheduled" |
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statusScheduledDeleted postStatus = "scheduled-deleted" |
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) |
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func (a *goBlog) servePost(w http.ResponseWriter, r *http.Request) { |
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p, err := a.getPost(r.URL.Path) |
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if errors.Is(err, errPostNotFound) { |
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a.serve404(w, r) |
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return |
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} else if err != nil { |
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a.serveError(w, r, err.Error(), http.StatusInternalServerError) |
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return |
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} |
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if asRequest, ok := r.Context().Value(asRequestKey).(bool); ok && asRequest { |
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if r.URL.Path == a.getRelativePath(p.Blog, "") { |
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a.serveActivityStreams(p.Blog, w, r) |
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return |
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} |
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a.serveActivityStreamsPost(p, w) |
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return |
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} |
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canonical := p.firstParameter("original") |
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if canonical == "" { |
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canonical = a.fullPostURL(p) |
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} |
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renderMethod := a.renderPost |
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if p.Path == a.getRelativePath(p.Blog, "") { |
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renderMethod = a.renderStaticHome |
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} |
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w.Header().Add("Link", fmt.Sprintf("<%s>; rel=shortlink", a.shortPostURL(p))) |
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status := http.StatusOK |
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if strings.HasSuffix(string(p.Status), statusDeletedSuffix) { |
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status = http.StatusGone |
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} |
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a.renderWithStatusCode(w, r, status, renderMethod, &renderData{ |
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BlogString: p.Blog, |
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Canonical: canonical, |
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Data: p, |
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}) |
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} |
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const defaultRandomPath = "/random" |
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func (a *goBlog) redirectToRandomPost(rw http.ResponseWriter, r *http.Request) { |
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blog, _ := a.getBlog(r) |
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randomPath, err := a.getRandomPostPath(blog) |
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if err != nil { |
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a.serveError(rw, r, err.Error(), http.StatusInternalServerError) |
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return |
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} |
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http.Redirect(rw, r, randomPath, http.StatusFound) |
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} |
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const defaultOnThisDayPath = "/onthisday" |
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func (a *goBlog) redirectToOnThisDay(w http.ResponseWriter, r *http.Request) { |
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_, bc := a.getBlog(r) |
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// Get current local month and day |
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now := time.Now() |
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month := now.Month() |
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day := now.Day() |
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// Build the path |
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targetPath := fmt.Sprintf("/x/%02d/%02d", month, day) |
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targetPath = bc.getRelativePath(targetPath) |
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// Redirect |
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http.Redirect(w, r, targetPath, http.StatusFound) |
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} |
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type postPaginationAdapter struct { |
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config *postsRequestConfig |
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nums int64 |
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a *goBlog |
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} |
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func (p *postPaginationAdapter) Nums() (int64, error) { |
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if p.nums == 0 { |
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nums, _ := p.a.db.countPosts(p.config) |
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p.nums = int64(nums) |
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} |
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return p.nums, nil |
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} |
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func (p *postPaginationAdapter) Slice(offset, length int, data any) error { |
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modifiedConfig := *p.config |
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modifiedConfig.offset = offset |
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modifiedConfig.limit = length |
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posts, err := p.a.getPosts(&modifiedConfig) |
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reflect.ValueOf(data).Elem().Set(reflect.ValueOf(&posts).Elem()) |
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return err |
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} |
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func (a *goBlog) serveHome(w http.ResponseWriter, r *http.Request) { |
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blog, _ := a.getBlog(r) |
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if asRequest, ok := r.Context().Value(asRequestKey).(bool); ok && asRequest { |
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a.serveActivityStreams(blog, w, r) |
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return |
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} |
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a.serveIndex(w, r.WithContext(context.WithValue(r.Context(), indexConfigKey, &indexConfig{ |
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path: a.getRelativePath(blog, ""), |
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}))) |
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} |
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func (a *goBlog) serveDrafts(w http.ResponseWriter, r *http.Request) { |
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_, bc := a.getBlog(r) |
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a.serveIndex(w, r.WithContext(context.WithValue(r.Context(), indexConfigKey, &indexConfig{ |
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path: bc.getRelativePath("/editor/drafts"), |
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title: a.ts.GetTemplateStringVariant(bc.Lang, "drafts"), |
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description: a.ts.GetTemplateStringVariant(bc.Lang, "draftsdesc"), |
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status: statusDraft, |
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}))) |
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} |
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func (a *goBlog) servePrivate(w http.ResponseWriter, r *http.Request) { |
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_, bc := a.getBlog(r) |
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a.serveIndex(w, r.WithContext(context.WithValue(r.Context(), indexConfigKey, &indexConfig{ |
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path: bc.getRelativePath("/editor/private"), |
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title: a.ts.GetTemplateStringVariant(bc.Lang, "privateposts"), |
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description: a.ts.GetTemplateStringVariant(bc.Lang, "privatepostsdesc"), |
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status: statusPrivate, |
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}))) |
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} |
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func (a *goBlog) serveUnlisted(w http.ResponseWriter, r *http.Request) { |
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_, bc := a.getBlog(r) |
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a.serveIndex(w, r.WithContext(context.WithValue(r.Context(), indexConfigKey, &indexConfig{ |
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path: bc.getRelativePath("/editor/unlisted"), |
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title: a.ts.GetTemplateStringVariant(bc.Lang, "unlistedposts"), |
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description: a.ts.GetTemplateStringVariant(bc.Lang, "unlistedpostsdesc"), |
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status: statusUnlisted, |
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}))) |
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} |
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func (a *goBlog) serveScheduled(w http.ResponseWriter, r *http.Request) { |
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_, bc := a.getBlog(r) |
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a.serveIndex(w, r.WithContext(context.WithValue(r.Context(), indexConfigKey, &indexConfig{ |
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path: bc.getRelativePath("/editor/scheduled"), |
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title: a.ts.GetTemplateStringVariant(bc.Lang, "scheduledposts"), |
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description: a.ts.GetTemplateStringVariant(bc.Lang, "scheduledpostsdesc"), |
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status: statusScheduled, |
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}))) |
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} |
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func (a *goBlog) serveDeleted(w http.ResponseWriter, r *http.Request) { |
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_, bc := a.getBlog(r) |
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a.serveIndex(w, r.WithContext(context.WithValue(r.Context(), indexConfigKey, &indexConfig{ |
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path: bc.getRelativePath("/editor/deleted"), |
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title: a.ts.GetTemplateStringVariant(bc.Lang, "deletedposts"), |
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description: a.ts.GetTemplateStringVariant(bc.Lang, "deletedpostsdesc"), |
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statusse: []postStatus{statusPublishedDeleted, statusDraftDeleted, statusScheduledDeleted, statusPrivateDeleted, statusUnlistedDeleted}, |
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}))) |
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} |
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func (a *goBlog) serveDate(w http.ResponseWriter, r *http.Request) { |
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var year, month, day int |
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if ys := chi.URLParam(r, "year"); ys != "" && ys != "x" { |
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year = stringToInt(ys) |
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} |
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if ms := chi.URLParam(r, "month"); ms != "" && ms != "x" { |
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month = stringToInt(ms) |
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} |
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if ds := chi.URLParam(r, "day"); ds != "" { |
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day = stringToInt(ds) |
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} |
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if year == 0 && month == 0 && day == 0 { |
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a.serve404(w, r) |
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return |
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} |
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title, dPath := bufferpool.Get(), bufferpool.Get() |
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if year != 0 { |
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_, _ = fmt.Fprintf(title, "%0004d", year) |
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_, _ = fmt.Fprintf(dPath, "%0004d", year) |
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} else { |
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_, _ = title.WriteString("XXXX") |
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_, _ = dPath.WriteString("x") |
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} |
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if month != 0 { |
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_, _ = fmt.Fprintf(title, "-%02d", month) |
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_, _ = fmt.Fprintf(dPath, "/%02d", month) |
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} else if day != 0 { |
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_, _ = title.WriteString("-XX") |
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_, _ = dPath.WriteString("/x") |
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} |
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if day != 0 { |
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_, _ = fmt.Fprintf(title, "-%02d", day) |
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_, _ = fmt.Fprintf(dPath, "/%02d", day) |
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} |
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_, bc := a.getBlog(r) |
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a.serveIndex(w, r.WithContext(context.WithValue(r.Context(), indexConfigKey, &indexConfig{ |
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path: bc.getRelativePath(dPath.String()), |
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year: year, |
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month: month, |
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day: day, |
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title: title.String(), |
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}))) |
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bufferpool.Put(title, dPath) |
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} |
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type indexConfig struct { |
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path string |
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section *configSection |
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tax *configTaxonomy |
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taxValue string |
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parameter string |
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year, month, day int |
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title string |
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description string |
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summaryTemplate summaryTyp |
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status postStatus |
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statusse []postStatus |
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} |
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const defaultPhotosPath = "/photos" |
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const indexConfigKey contextKey = "indexConfig" |
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func (a *goBlog) serveIndex(w http.ResponseWriter, r *http.Request) { |
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ic := r.Context().Value(indexConfigKey).(*indexConfig) |
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blog, bc := a.getBlog(r) |
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search := chi.URLParam(r, "search") |
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if search != "" { |
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// Decode and sanitize search |
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search = cleanHTMLText(searchDecode(search)) |
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} |
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var sections []string |
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if ic.section != nil { |
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sections = []string{ic.section.Name} |
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} else { |
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for sectionKey := range bc.Sections { |
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sections = append(sections, sectionKey) |
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} |
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} |
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statusse := ic.statusse |
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if ic.status != statusNil { |
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statusse = []postStatus{ic.status} |
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} |
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if len(statusse) == 0 { |
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statusse = []postStatus{statusPublished} |
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} |
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p := paginator.New(&postPaginationAdapter{config: &postsRequestConfig{ |
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blog: blog, |
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sections: sections, |
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taxonomy: ic.tax, |
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taxonomyValue: ic.taxValue, |
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parameter: ic.parameter, |
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search: search, |
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publishedYear: ic.year, |
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publishedMonth: ic.month, |
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publishedDay: ic.day, |
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statusse: statusse, |
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priorityOrder: true, |
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}, a: a}, bc.Pagination) |
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p.SetPage(stringToInt(chi.URLParam(r, "page"))) |
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var posts []*post |
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err := p.Results(&posts) |
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if err != nil { |
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a.serveError(w, r, err.Error(), http.StatusInternalServerError) |
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return |
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} |
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// Meta |
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title := ic.title |
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description := ic.description |
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if ic.tax != nil { |
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title = fmt.Sprintf("%s: %s", ic.tax.Title, ic.taxValue) |
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} else if ic.section != nil { |
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title = ic.section.Title |
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description = ic.section.Description |
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} else if search != "" { |
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title = fmt.Sprintf("%s: %s", bc.Search.Title, search) |
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} |
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// Check if feed |
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if ft := feedType(chi.URLParam(r, "feed")); ft != noFeed { |
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a.generateFeed(blog, ft, w, r, posts, title, description) |
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return |
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} |
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// Path |
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path := ic.path |
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if strings.Contains(path, searchPlaceholder) { |
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path = strings.ReplaceAll(path, searchPlaceholder, searchEncode(search)) |
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} |
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// Navigation |
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var hasPrev, hasNext bool |
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var prevPage, nextPage int |
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var prevPath, nextPath string |
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hasPrev, _ = p.HasPrev() |
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if hasPrev { |
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prevPage, _ = p.PrevPage() |
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} else { |
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prevPage, _ = p.Page() |
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} |
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if prevPage < 2 { |
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prevPath = path |
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} else { |
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prevPath = fmt.Sprintf("%s/page/%d", strings.TrimSuffix(path, "/"), prevPage) |
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} |
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hasNext, _ = p.HasNext() |
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if hasNext { |
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nextPage, _ = p.NextPage() |
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} else { |
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nextPage, _ = p.Page() |
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} |
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nextPath = fmt.Sprintf("%s/page/%d", strings.TrimSuffix(path, "/"), nextPage) |
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summaryTemplate := ic.summaryTemplate |
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if summaryTemplate == "" { |
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summaryTemplate = defaultSummary |
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} |
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a.render(w, r, a.renderIndex, &renderData{ |
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Canonical: a.getFullAddress(path), |
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Data: &indexRenderData{ |
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title: title, |
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description: description, |
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posts: posts, |
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hasPrev: hasPrev, |
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hasNext: hasNext, |
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first: path, |
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prev: prevPath, |
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next: nextPath, |
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summaryTemplate: summaryTemplate, |
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}, |
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}) |
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}
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