my-emacs-d/elpa/sx-20160125.1601/sx-favorites.el

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2016-09-22 15:58:26 +00:00
;;; sx-favorites.el --- starred questions -*- lexical-binding: t; -*-
;; Copyright (C) 2014 Sean Allred
;; Author: Sean Allred <code@seanallred.com>
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This file provides logic for retrieving and managing a user's
;; starred questions.
;;; Code:
(require 'sx-method)
(require 'sx-cache)
(require 'sx-site)
(require 'sx-networks)
(require 'sx-filter)
(defconst sx-favorite-list-filter
(sx-filter-from-nil
(question.question_id)))
(defvar sx-favorites--user-favorite-list nil
"Alist of questions favorited by the user.
Each element has the form (SITE FAVORITE-LIST). And each element
in FAVORITE-LIST is the numerical QUESTION_ID.")
(defun sx-favorites--initialize ()
"Ensure question-favorites cache is available.
Added as hook to initialization."
(or (setq sx-favorites--user-favorite-list
(sx-cache-get 'question-favorites))
(sx-favorites-update)))
;; ;; Append to ensure `sx-network--initialize' is run before it.
;; This is removed for now because it performs a lot of API calls and
;; was never used.
;; (add-hook 'sx-init--internal-hook #'sx-favorites--initialize 'append)
(defun sx-favorites--retrieve-favorites (site)
"Obtain list of starred QUESTION_IDs for SITE."
(sx-method-call 'me
:submethod 'favorites
:site site
:filter sx-favorite-list-filter
:auth t))
(defun sx-favorites--update-site-favorites (site)
"Update list of starred QUESTION_IDs for SITE.
Writes list to cache QUESTION-FAVORITES."
(let* ((favs (sx-favorites--retrieve-favorites site))
(site-cell (assoc site
sx-favorites--user-favorite-list))
(fav-cell (mapcar #'cdar favs)))
(if site-cell
(setcdr site-cell fav-cell)
(push (cons site fav-cell) sx-favorites--user-favorite-list))
(sx-cache-set 'question-favorites sx-favorites--user-favorite-list)))
(defun sx-favorites-update ()
"Update all sites retrieved from `sx-network--user-sites'."
(mapc #'sx-favorites--update-site-favorites
sx-network--user-sites))
(provide 'sx-favorites)
;;; sx-favorites.el ends here
;; Local Variables:
;; indent-tabs-mode: nil
;; End: