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assets/webapps/sms.gaiamobile.org/views/shared/js/notify.js

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+/*global SettingsURL */
+
+(function(exports) {
+  'use strict';
+
+  var SETTINGS = {
+    notificationVolume: 'audio.volume.notification',
+    vibration: 'vibration.enabled',
+    ringtone: 'notification.ringtone'
+  };
+
+  function entry(key, value) {
+    if (urls[key]) {
+      return new SettingsURL().set(value);
+    }
+    return value;
+  }
+
+  // one day we'll be able to use ES6 initializers instead
+  var urls = {};
+  urls[SETTINGS.ringtone] = 1;
+
+  function getSetting(key) {
+    if (!navigator.mozSettings) {
+      return Promise.reject(new Error('The mozSettings API is not available.'));
+    }
+
+    var request = navigator.mozSettings.createLock().get(key);
+    return new Promise((resolve, reject) => {
+      request.onsuccess = function() {
+        resolve(entry(key, request.result[key]));
+      };
+
+      request.onerror = function() {
+        reject(new Error('Error while retrieving ' + key));
+      };
+    });
+  }
+
+  function getSettings(settings) {
+    return Promise.all(
+      settings.map(getSetting)
+    ).catch((e) => {
+      // catch and log errors
+      console.error('Error while retrieving settings', e.message, e);
+      return settings.map(() => null);
+    }).then((results) => {
+      return settings.reduce((result, setting, i) => {
+        result[setting] = results[i];
+        return result;
+      }, {});
+    });
+  }
+
+  function ringtone(ringtoneFile) {
+    var ringtonePlayer = new Audio();
+    ringtonePlayer.src = ringtoneFile;
+    ringtonePlayer.mozAudioChannelType = 'notification';
+    ringtonePlayer.play();
+    window.setTimeout(function smsRingtoneEnder() {
+      ringtonePlayer.pause();
+      ringtonePlayer.removeAttribute('src');
+      ringtonePlayer.load();
+    }, 2000);
+  }
+
+  function vibrate() {
+    // vibration only works when App is in the foreground
+    if (document.hidden) {
+      window.addEventListener('visibilitychange', function waitOn() {
+        window.removeEventListener('visibilitychange', waitOn);
+        navigator.vibrate([200, 200, 200, 200]);
+      });
+    } else {
+      navigator.vibrate([200, 200, 200, 200]);
+    }
+  }
+
+  var Notify = {
+    ringtone: function notification_ringtone() {
+      return getSettings(
+        [SETTINGS.notificationVolume, SETTINGS.ringtone]
+      ).then((settings) => {
+        if (settings[SETTINGS.notificationVolume] &&
+            settings[SETTINGS.ringtone]) {
+          ringtone(settings[SETTINGS.ringtone]);
+        }
+      });
+    },
+
+    vibrate: function notification_vibrate() {
+      return getSettings([SETTINGS.vibration]).then((settings) => {
+        if (settings[SETTINGS.vibration]) {
+          vibrate();
+        }
+      });
+    }
+  };
+
+  exports.Notify = Notify;
+}(this));