Function fetchCollection

collections.go:535–581

fetchCollection handles the API endpoint for retrieving collection data.

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

// fetchCollection handles the API endpoint for retrieving collection data.
func fetchCollection(app *App, w http.ResponseWriter, r *http.Request) error {
	if IsActivityPubRequest(r) {
		return handleFetchCollectionActivities(app, w, r)
	}

	vars := mux.Vars(r)
	alias := vars["alias"]

	// TODO: move this logic into a common getCollection function
	// Get base Collection data
	c, err := app.db.GetCollection(alias)
	if err != nil {
		return err
	}
	c.hostName = app.cfg.App.Host

	// Redirect users who aren't requesting JSON
	reqJSON := IsJSON(r)
	if !reqJSON {
		return impart.HTTPError{http.StatusFound, c.CanonicalURL()}
	}

	// Check permissions
	userID, err := apiCheckCollectionPermissions(app, r, c)
	if err != nil {
		return err
	}
	isCollOwner := userID == c.OwnerID

	// Fetch extra data about the Collection
	res := &CollectionObj{Collection: *c}
	if c.PublicOwner {
		u, err := app.db.GetUserByID(res.OwnerID)
		if err != nil {
			// Log the error and just continue
			log.Error("Error getting user for collection: %v", err)
		} else {
			res.Owner = u
		}
	}
	// TODO: check status for silenced
	app.db.GetPostsCount(res, isCollOwner)
	// Strip non-public information
	res.Collection.ForPublic()

	return impart.WriteSuccess(w, res, http.StatusOK)
}

// fetchCollectionPosts handles an API endpoint for retrieving a collection's
// posts.