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205 lines
8.1 KiB
EmacsLisp
205 lines
8.1 KiB
EmacsLisp
;; gnus-notifications.el -- Send notification on new message in Gnus
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;; Copyright (C) 2012-2020 Free Software Foundation, Inc.
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;; Author: Julien Danjou <julien@danjou.info>
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;; Keywords: news
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This implements notifications using `notifications-notify' on new
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;; messages received.
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;; Use (add-hook 'gnus-after-getting-new-news-hook 'gnus-notifications)
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;; to get notifications just after getting the new news.
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;;; Code:
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(ignore-errors
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(require 'notifications))
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(require 'gnus-sum)
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(require 'gnus-group)
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(require 'gnus-int)
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(require 'gnus-art)
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(require 'gnus-util)
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(ignore-errors
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(require 'google-contacts)) ; Optional
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(require 'gnus-fun)
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(defgroup gnus-notifications nil
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"Send notifications on new message in Gnus."
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:version "24.3"
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:group 'gnus)
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(defcustom gnus-notifications-use-google-contacts t
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"Use Google Contacts to retrieve photo."
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:type 'boolean
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:group 'gnus-notifications)
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(defcustom gnus-notifications-use-gravatar t
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"Use Gravatar to retrieve photo."
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:type 'boolean
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:group 'gnus-notifications)
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(defcustom gnus-notifications-minimum-level 1
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"Minimum group level the message should have to be notified.
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Any message in a group that has a greater value than this will
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not get notifications."
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:type 'integer
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:group 'gnus-notifications)
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(defcustom gnus-notifications-timeout nil
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"Timeout used for notifications sent via `notifications-notify'."
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:type '(choice (const :tag "Server default" nil)
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(integer :tag "Milliseconds"))
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:group 'gnus-notifications)
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(defvar gnus-notifications-sent nil
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"Notifications already sent.")
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(defvar gnus-notifications-id-to-msg nil
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"Map notifications ids to messages.")
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(defun gnus-notifications-action (id key)
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(let ((group-article (assoc id gnus-notifications-id-to-msg)))
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(when group-article
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(let ((group (cadr group-article))
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(article (nth 2 group-article)))
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(cond ((string= key "read")
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(gnus-fetch-group group (list article))
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(select-frame-set-input-focus (selected-frame)))
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((string= key "mark-read")
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(gnus-update-read-articles
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group
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(delq article (gnus-list-of-unread-articles group)))
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;; gnus-group-refresh-group
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(gnus-group-update-group group)))))))
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(defun gnus-notifications-notify (from subject photo-file)
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"Send a notification about a new mail.
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Return a notification id if any, or t on success."
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(if (fboundp 'notifications-notify)
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(gnus-funcall-no-warning
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'notifications-notify
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:title from
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:body subject
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:actions '("read" "Read" "mark-read" "Mark As Read")
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:on-action 'gnus-notifications-action
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:app-icon (gnus-funcall-no-warning
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'image-search-load-path "gnus/gnus.png")
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:image-path photo-file
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:app-name "Gnus"
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:category "email.arrived"
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:timeout gnus-notifications-timeout)
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(message "New message from %s: %s" from subject)
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;; Don't return an id
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t))
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(declare-function gravatar-retrieve-synchronously "gravatar.el"
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(mail-address))
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(defun gnus-notifications-get-photo (mail-address)
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"Get photo for mail address."
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(let ((google-photo (when (and gnus-notifications-use-google-contacts
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(fboundp 'google-contacts-get-photo))
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(ignore-errors
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(gnus-funcall-no-warning
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'google-contacts-get-photo mail-address)))))
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(if google-photo
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google-photo
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(when gnus-notifications-use-gravatar
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(let ((gravatar (ignore-errors
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(gravatar-retrieve-synchronously mail-address))))
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(if (eq gravatar 'error)
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nil
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(plist-get (cdr gravatar) :data)))))))
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(defun gnus-notifications-get-photo-file (mail-address)
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"Get a temporary file with an image for MAIL-ADDRESS.
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You have to delete the temporary image yourself using
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`delete-image'.
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Returns nil if no image found."
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(let ((photo (gnus-notifications-get-photo mail-address)))
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(when photo
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(let ((photo-file (make-temp-file "gnus-notifications-photo-"))
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(coding-system-for-write 'binary))
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(with-temp-file photo-file
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(insert photo))
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photo-file))))
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;;;###autoload
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(defun gnus-notifications ()
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"Send a notification on new message.
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This check for new messages that are in group with a level lower
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or equal to `gnus-notifications-minimum-level' and send a
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notification using `notifications-notify' for it.
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This is typically a function to add in
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`gnus-after-getting-new-news-hook'"
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(dolist (entry gnus-newsrc-alist)
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(let ((group (car entry)))
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;; Check that the group level is less than
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;; `gnus-notifications-minimum-level' and the group has unread
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;; messages.
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(when (and (<= (gnus-group-level group) gnus-notifications-minimum-level)
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(let ((unread (gnus-group-unread group)))
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(and (numberp unread)
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(> unread 0))))
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;; Each group should have an entry in the `gnus-notifications-sent'
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;; alist. If not, we add one at this time.
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(let ((group-notifications (or (assoc group gnus-notifications-sent)
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;; Nothing, add one and return it.
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(assoc group
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(add-to-list
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'gnus-notifications-sent
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(cons group nil))))))
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(dolist (article (gnus-list-of-unread-articles group))
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;; Check if the article already has been notified
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(unless (memq article (cdr group-notifications))
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(with-current-buffer nntp-server-buffer
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(gnus-request-head article group)
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(article-decode-encoded-words) ; to decode mail addresses, subjects, etc
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(let* ((address-components (mail-extract-address-components
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(or (mail-fetch-field "From") "")))
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(address (cadr address-components)))
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;; Ignore mails from ourselves
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(unless (and gnus-ignored-from-addresses
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address
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(cond ((functionp gnus-ignored-from-addresses)
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(funcall gnus-ignored-from-addresses address))
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(t (string-match-p
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(gnus-ignored-from-addresses)
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address))))
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(let* ((photo-file (gnus-notifications-get-photo-file address))
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(notification-id (gnus-notifications-notify
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(or (car address-components) address)
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(mail-fetch-field "Subject")
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photo-file)))
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(when notification-id
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;; Register that we did notify this message
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(setcdr group-notifications (cons article (cdr group-notifications)))
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(unless (eq notification-id t)
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;; Register the notification id for later actions
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(add-to-list 'gnus-notifications-id-to-msg (list notification-id group article))))
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(when photo-file
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(delete-file photo-file)))))))))))))
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(provide 'gnus-notifications)
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;;; gnus-notifications.el ends here
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