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130 lines
2.8 KiB
130 lines
2.8 KiB
package http
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import (
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"errors"
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"fmt"
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"net/http"
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"path/filepath"
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"strings"
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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) renderDraftPostHandler() http.Handler {
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tpl := a.mustParseBasedTpl("post.html")
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renderDraftPostsIndexHandler := a.renderDraftPostsIndexHandler()
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renderDraftEditPostHandler := a.renderEditPostHandler(true)
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return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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id := strings.TrimSuffix(filepath.Base(r.URL.Path), ".html")
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if id == "/" {
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renderDraftPostsIndexHandler.ServeHTTP(rw, r)
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return
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}
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if _, ok := r.URL.Query()["edit"]; ok {
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renderDraftEditPostHandler.ServeHTTP(rw, r)
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return
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}
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p, err := a.params.PostDraftStore.GetByID(id)
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if errors.Is(err, post.ErrPostNotFound) {
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http.Error(rw, "Post not found", 404)
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return
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} else if err != nil {
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apiutil.InternalServerError(
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rw, r, fmt.Errorf("fetching post with id %q: %w", id, err),
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)
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return
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}
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tplPayload, err := a.postToPostTplPayload(post.StoredPost{Post: p})
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if err != nil {
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apiutil.InternalServerError(
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rw, r, fmt.Errorf(
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"generating template payload for post with id %q: %w",
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id, err,
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),
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)
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return
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}
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executeTemplate(rw, r, tpl, tplPayload)
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})
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}
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func (a *api) renderDraftPostsIndexHandler() http.Handler {
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renderEditPostHandler := a.renderEditPostHandler(true)
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tpl := a.mustParseBasedTpl("draft-posts.html")
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const pageCount = 20
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return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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if _, ok := r.URL.Query()["edit"]; ok {
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renderEditPostHandler.ServeHTTP(rw, r)
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return
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}
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page, err := apiutil.StrToInt(r.FormValue("p"), 0)
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if err != nil {
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apiutil.BadRequest(
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rw, r, fmt.Errorf("invalid page number: %w", err),
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)
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return
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}
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posts, hasMore, err := a.params.PostDraftStore.Get(page, pageCount)
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if err != nil {
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apiutil.InternalServerError(
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rw, r, fmt.Errorf("fetching page %d of posts: %w", page, err),
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)
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return
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}
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tplPayload := struct {
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Posts []post.Post
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PrevPage, NextPage int
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}{
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Posts: posts,
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PrevPage: -1,
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NextPage: -1,
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}
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if page > 0 {
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tplPayload.PrevPage = page - 1
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}
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if hasMore {
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tplPayload.NextPage = page + 1
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}
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executeTemplate(rw, r, tpl, tplPayload)
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})
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}
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func (a *api) postDraftPostHandler() http.Handler {
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return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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p, err := postFromPostReq(r)
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if err != nil {
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apiutil.BadRequest(rw, r, err)
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return
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}
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if err := a.params.PostDraftStore.Set(p); err != nil {
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apiutil.InternalServerError(
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rw, r, fmt.Errorf("storing post with id %q: %w", p.ID, err),
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)
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return
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}
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a.executeRedirectTpl(rw, r, a.draftURL(p.ID, false)+"?edit")
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})
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}
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