Function handleViewMeta

pad.go:123–193

(app *App, w http.ResponseWriter, r *http.Request)

}

func handleViewMeta(app *App, w http.ResponseWriter, r *http.Request) error {
	vars := mux.Vars(r)
	action := vars["action"]
	slug := vars["slug"]
	collAlias := vars["collection"]
	appData := &struct {
		page.StaticPage
		Post           *RawPost
		User           *User
		EditCollection *Collection // Collection of the post we're editing, if any
		Flashes        []string
		NeedsToken     bool
		Silenced       bool
	}{
		StaticPage: pageForReq(app, r),
		Post:       &RawPost{Font: "norm"},
		User:       getUserSession(app, r),
	}
	var err error
	appData.Silenced, err = app.db.IsUserSilenced(appData.User.ID)
	if err != nil {
		log.Error("view meta: get user status: %v", err)
		return ErrInternalGeneral
	}

	if action == "" && slug == "" {
		return ErrPostNotFound
	}

	// Make sure this isn't cached, so user doesn't accidentally lose data
	w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
	w.Header().Set("Expires", "Thu, 28 Jul 1989 12:00:00 GMT")
	if slug != "" {
		appData.Post = getRawCollectionPost(app, slug, collAlias)
		if appData.Post.OwnerID != appData.User.ID {
			// TODO: add ErrForbiddenEditPost message to flashes
			return impart.HTTPError{http.StatusFound, r.URL.Path[:strings.LastIndex(r.URL.Path, "/meta")]}
		}
		if app.cfg.App.SingleUser {
			// TODO: optimize this query just like we do in GetCollectionForPad (?)
			appData.EditCollection, err = app.db.GetCollectionByID(1)
		} else {
			appData.EditCollection, err = app.db.GetCollectionForPad(collAlias)
		}
		if err != nil {
			return err
		}
		appData.EditCollection.hostName = app.cfg.App.Host
	} else {
		// Editing a floating article
		appData.Post = getRawPost(app, action)
		appData.Post.Id = action
	}
	appData.NeedsToken = appData.User == nil || appData.User.ID != appData.Post.OwnerID

	if appData.Post.Gone {
		return ErrPostUnpublished
	} else if appData.Post.Found && appData.Post.Content != "" {