From 09acb111a2b22f5794541fac175b024dd0f9100e Mon Sep 17 00:00:00 2001 From: Brian Picciano Date: Fri, 20 May 2022 11:17:31 -0600 Subject: Rename api package to http --- srv/src/api/posts.go | 274 --------------------------------------------------- 1 file changed, 274 deletions(-) delete mode 100644 srv/src/api/posts.go (limited to 'srv/src/api/posts.go') diff --git a/srv/src/api/posts.go b/srv/src/api/posts.go deleted file mode 100644 index ab11474..0000000 --- a/srv/src/api/posts.go +++ /dev/null @@ -1,274 +0,0 @@ -package api - -import ( - "errors" - "fmt" - "html/template" - "net/http" - "path/filepath" - "strings" - "time" - - "github.com/gomarkdown/markdown" - "github.com/gomarkdown/markdown/html" - "github.com/gomarkdown/markdown/parser" - "github.com/mediocregopher/blog.mediocregopher.com/srv/api/apiutil" - "github.com/mediocregopher/blog.mediocregopher.com/srv/post" -) - -type postTplPayload struct { - post.StoredPost - SeriesPrevious, SeriesNext *post.StoredPost - Body template.HTML -} - -func (a *api) postToPostTplPayload(storedPost post.StoredPost) (postTplPayload, error) { - parserExt := parser.CommonExtensions | parser.AutoHeadingIDs - parser := parser.NewWithExtensions(parserExt) - - htmlFlags := html.CommonFlags | html.HrefTargetBlank - htmlRenderer := html.NewRenderer(html.RendererOptions{Flags: htmlFlags}) - - renderedBody := markdown.ToHTML([]byte(storedPost.Body), parser, htmlRenderer) - - tplPayload := postTplPayload{ - StoredPost: storedPost, - Body: template.HTML(renderedBody), - } - - if series := storedPost.Series; series != "" { - - seriesPosts, err := a.params.PostStore.GetBySeries(series) - if err != nil { - return postTplPayload{}, fmt.Errorf( - "fetching posts for series %q: %w", series, err, - ) - } - - var foundThis bool - - for i := range seriesPosts { - - seriesPost := seriesPosts[i] - - if seriesPost.ID == storedPost.ID { - foundThis = true - continue - } - - if !foundThis { - tplPayload.SeriesPrevious = &seriesPost - continue - } - - tplPayload.SeriesNext = &seriesPost - break - } - } - - return tplPayload, nil -} - -func (a *api) renderPostHandler() http.Handler { - - tpl := a.mustParseBasedTpl("post.html") - renderIndexHandler := a.renderPostsIndexHandler() - - return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) { - - id := strings.TrimSuffix(filepath.Base(r.URL.Path), ".html") - - if id == "/" { - renderIndexHandler.ServeHTTP(rw, r) - return - } - - storedPost, err := a.params.PostStore.GetByID(id) - - if errors.Is(err, post.ErrPostNotFound) { - http.Error(rw, "Post not found", 404) - return - } else if err != nil { - apiutil.InternalServerError( - rw, r, fmt.Errorf("fetching post with id %q: %w", id, err), - ) - return - } - - tplPayload, err := a.postToPostTplPayload(storedPost) - - if err != nil { - apiutil.InternalServerError( - rw, r, fmt.Errorf( - "generating template payload for post with id %q: %w", - id, err, - ), - ) - return - } - - executeTemplate(rw, r, tpl, tplPayload) - }) -} - -func (a *api) renderPostsIndexHandler() http.Handler { - - tpl := a.mustParseBasedTpl("posts.html") - const pageCount = 20 - - return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) { - - page, err := apiutil.StrToInt(r.FormValue("p"), 0) - if err != nil { - apiutil.BadRequest( - rw, r, fmt.Errorf("invalid page number: %w", err), - ) - return - } - - posts, hasMore, err := a.params.PostStore.WithOrderDesc().Get(page, pageCount) - if err != nil { - apiutil.InternalServerError( - rw, r, fmt.Errorf("fetching page %d of posts: %w", page, err), - ) - return - } - - tplPayload := struct { - Posts []post.StoredPost - PrevPage, NextPage int - }{ - Posts: posts, - PrevPage: -1, - NextPage: -1, - } - - if page > 0 { - tplPayload.PrevPage = page - 1 - } - - if hasMore { - tplPayload.NextPage = page + 1 - } - - executeTemplate(rw, r, tpl, tplPayload) - }) -} - -func (a *api) editPostHandler() http.Handler { - - tpl := a.mustParseBasedTpl("edit-post.html") - - return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) { - - id := filepath.Base(r.URL.Path) - - var storedPost post.StoredPost - - if id != "/" { - - var err error - storedPost, err = a.params.PostStore.GetByID(id) - - if errors.Is(err, post.ErrPostNotFound) { - http.Error(rw, "Post not found", 404) - return - } else if err != nil { - apiutil.InternalServerError( - rw, r, fmt.Errorf("fetching post with id %q: %w", id, err), - ) - return - } - } - - executeTemplate(rw, r, tpl, storedPost) - }) -} - -func postFromPostReq(r *http.Request) post.Post { - - p := post.Post{ - ID: r.PostFormValue("id"), - Title: r.PostFormValue("title"), - Description: r.PostFormValue("description"), - Tags: strings.Fields(r.PostFormValue("tags")), - Series: r.PostFormValue("series"), - } - - p.Body = strings.TrimSpace(r.PostFormValue("body")) - // textareas encode newlines as CRLF for historical reasons - p.Body = strings.ReplaceAll(p.Body, "\r\n", "\n") - - return p -} - -func (a *api) postPostHandler() http.Handler { - - return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) { - - p := postFromPostReq(r) - - if err := a.params.PostStore.Set(p, time.Now()); err != nil { - apiutil.InternalServerError( - rw, r, fmt.Errorf("storing post with id %q: %w", p.ID, err), - ) - return - } - - redirectPath := fmt.Sprintf("posts/%s?method=edit", p.ID) - - a.executeRedirectTpl(rw, r, redirectPath) - }) -} - -func (a *api) deletePostHandler() http.Handler { - - return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) { - - id := filepath.Base(r.URL.Path) - - if id == "/" { - apiutil.BadRequest(rw, r, errors.New("id is required")) - return - } - - err := a.params.PostStore.Delete(id) - - if errors.Is(err, post.ErrPostNotFound) { - http.Error(rw, "Post not found", 404) - return - } else if err != nil { - apiutil.InternalServerError( - rw, r, fmt.Errorf("deleting post with id %q: %w", id, err), - ) - return - } - - a.executeRedirectTpl(rw, r, "posts/") - - }) -} - -func (a *api) previewPostHandler() http.Handler { - - tpl := a.mustParseBasedTpl("post.html") - - return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) { - - storedPost := post.StoredPost{ - Post: postFromPostReq(r), - PublishedAt: time.Now(), - } - - tplPayload, err := a.postToPostTplPayload(storedPost) - - if err != nil { - apiutil.InternalServerError( - rw, r, fmt.Errorf("generating template payload: %w", err), - ) - return - } - - executeTemplate(rw, r, tpl, tplPayload) - }) -} -- cgit v1.2.3