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+;;; pushover.el --- Send generic messages to mobile device -*- lexical-binding: t -*-
+;; Author: William Carroll <wpcarro@gmail.com>
+
+;;; Commentary:
+;; Pushover.net is a mobile app that accepts JSON.  This supports loose
+;; integration between things and mobile devices.
+
+;;; Code:
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Dependencies
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(require 'request)
+(require 'password-store)
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Library
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defconst pushover/app-token
+  (password-store-get-field "api-keys/pushover.net" "emacs")
+  "App token for \"emacs\" application.")
+
+(defconst pushover/user-key
+  (password-store-get "api-keys/pushover.net")
+  "Key that identifies me to pushover.")
+
+(defconst pushover/url
+  "https://api.pushover.net/1/messages.json"
+  "URL to POST messages.")
+
+;; TODO: Rename module "pushover".
+
+(defun pushover/notify (message)
+  "Posts MESSAGE to all devices.
+Here are the parameters that Pushover accepts:
+
+Required parameters:
+  - token - your application's API token
+  - user - the user/group key (not e-mail address) of your user (or you),
+    viewable when logged into our dashboard (often referred to as USER_KEY in
+    our documentation and code examples)
+  - message - your message
+
+Additional parameters (optional):
+  - attachment - an image attachment to send with the message; see attachments
+    for more information on how to upload files
+    device - your user's device name to send the message directly to that
+    device, rather than all of the user's devices (multiple devices may be
+    separated by a comma)
+  - title - your message's title, otherwise your app's name is used
+  - url - a supplementary URL to show with your message
+  - url_title - a title for your supplementary URL, otherwise just the URL is
+    shown
+  - priority - send as -2 to generate no notification/alert, -1 to always send
+    as a quiet notification, 1 to display as high-priority and bypass the user's
+    quiet hours, or 2 to also require confirmation from the user
+  - sound - the name of one of the sounds supported by device clients to
+    override the user's default sound choice
+  - timestamp - a Unix timestamp"
+  (request
+   pushover/url
+   :type "POST"
+   :params `(("token"   . ,pushover/app-token)
+             ("user"    . ,pushover/user-key)
+             ("message" . ,message))
+   :data nil
+   :parser 'json-read
+   :success (cl-function
+             (lambda (&key data &allow-other-keys)
+               (message "Pushover.net notification sent!")))))
+
+(provide 'pushover)
+;;; pushover.el ends here