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;;; mastodon-client.el --- Client functions for mastodon.el -*- lexical-binding: t -*-
;; Copyright (C) 2017-2019 Johnson Denen
;; Author: Johnson Denen <johnson.denen@gmail.com>
;; Version: 0.9.1
;; Homepage: https://github.com/jdenen/mastodon.el
;; Package-Requires: ((emacs "26.1"))
;; This file is not part of GNU Emacs.
;; This file is part of mastodon.el.
;; mastodon.el 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.
;; mastodon.el 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 mastodon.el. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; mastodon-client.el supports registering the Emacs client with your Mastodon instance.
;;; Code:
(require 'plstore)
(require 'json)
(defvar mastodon-instance-url)
(autoload 'mastodon-http--api "mastodon-http")
(autoload 'mastodon-http--post "mastodon-http")
(defcustom mastodon-client--token-file (concat user-emacs-directory "mastodon.plstore")
"File path where Mastodon access tokens are stored."
:group 'mastodon
:type 'file)
(defvar mastodon-client--client-details-alist nil
"An alist of Client id and secrets keyed by the instance url.")
(defun mastodon-client--register ()
"POST client to Mastodon."
(mastodon-http--post
(mastodon-http--api "apps")
'(("client_name" "mastodon.el")
("redirect_uris" "urn:ietf:wg:oauth:2.0:oob")
("scopes" "read write follow")
("website" "https://github.com/jdenen/mastodon.el"))
nil
:unauthenticated))
(defun mastodon-client--fetch ()
"Return JSON from `mastodon-client--register' call."
(with-current-buffer (mastodon-client--register)
(goto-char (point-min))
(re-search-forward "^$" nil 'move)
(let ((json-object-type 'plist)
(json-key-type 'keyword)
(json-array-type 'vector)
(json-string (buffer-substring-no-properties (point) (point-max))))
(json-read-from-string json-string))))
(defun mastodon-client--token-file ()
"Return `mastodon-client--token-file'."
mastodon-client--token-file)
(defun mastodon-client--store ()
"Store client_id and client_secret in `mastodon-client--token-file'.
Make `mastodon-client--fetch' call to determine client values."
(let ((plstore (plstore-open (mastodon-client--token-file)))
(client (mastodon-client--fetch))
;; alexgriffith reported seeing ellipses in the saved output
;; which indicate some output truncating. Nothing in `plstore-save'
;; seems to ensure this cannot happen so let's do that ourselves:
(print-length nil)
(print-level nil))
(plstore-put plstore (concat "mastodon-" mastodon-instance-url) client nil)
(plstore-save plstore)
(plstore-close plstore)
client))
(defun mastodon-client--read ()
"Retrieve client_id and client_secret from `mastodon-client--token-file'."
(let* ((plstore (plstore-open (mastodon-client--token-file)))
(mastodon (plstore-get plstore (concat "mastodon-" mastodon-instance-url))))
(cdr mastodon)))
(defun mastodon-client ()
"Return variable client secrets to use for `mastodon-instance-url'.
Read plist from `mastodon-client--token-file' if variable is nil.
Fetch and store plist if `mastodon-client--read' returns nil."
(let ((client-details
(cdr (assoc mastodon-instance-url mastodon-client--client-details-alist))))
(unless client-details
(setq client-details
(or (mastodon-client--read)
(mastodon-client--store)))
(push (cons mastodon-instance-url client-details)
mastodon-client--client-details-alist))
client-details))
(provide 'mastodon-client)
;;; mastodon-client.el ends here
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