Avatar.js code cleanup

modules/UI/avatar/Avatar.js

@@ -1,7 +1,8 @@
-/* global Strophe, APP, MD5, config, interfaceConfig */
-var users = {};
+/* global MD5, config, interfaceConfig */
 
-var Avatar = {
+let users = {};
+
+export default {
 
     /**
      * Sets the user's avatar in the settings menu(if local user), contact list
@@ -16,48 +17,46 @@ var Avatar = {
             }
             users[id] = email;
         }
-        var avatarUrl = this.getAvatarUrl(id);
     },
+
     /**
      * Returns the URL of the image for the avatar of a particular user,
-     + identified by its jid
-     * @param jid
+     * identified by its id.
+     * @param {string} userId user id
      */
-    getAvatarUrl: function (jid) {
+    getAvatarUrl: function (userId) {
         if (config.disableThirdPartyRequests) {
             return 'images/avatar2.png';
-        } else {
-            if (!jid) {
-                console.error("Get avatar - jid is undefined");
+        }
+
+        if (!userId) {
+            console.error("Get avatar - id is undefined");
             return null;
         }
-            var id = users[jid];
+
+        let avatarId = users[userId];
 
         // If the ID looks like an email, we'll use gravatar.
         // Otherwise, it's a random avatar, and we'll use the configured
         // URL.
-            var random = !id || id.indexOf('@') < 0;
+        let random = !avatarId || avatarId.indexOf('@') < 0;
 
-            if (!id) {
+        if (!avatarId) {
             console.warn(
-                "No avatar stored yet for " + jid + " - using JID as ID");
-                id = jid;
+                `No avatar stored yet for ${userId} - using ID as avatar ID`);
+            avatarId = userId;
         }
-            id = MD5.hexdigest(id.trim().toLowerCase());
+        avatarId = MD5.hexdigest(avatarId.trim().toLowerCase());
 
         // Default to using gravatar.
-            var urlPref = 'https://www.gravatar.com/avatar/';
-            var urlSuf = "?d=wavatar&size=100";
+        let urlPref = 'https://www.gravatar.com/avatar/';
+        let urlSuf = "?d=wavatar&size=100";
 
         if (random && interfaceConfig.RANDOM_AVATAR_URL_PREFIX) {
             urlPref = interfaceConfig.RANDOM_AVATAR_URL_PREFIX;
             urlSuf = interfaceConfig.RANDOM_AVATAR_URL_SUFFIX;
         }
 
-            return urlPref + id + urlSuf;
-        }
+        return urlPref + avatarId + urlSuf;
     }
 };
-
-
-module.exports = Avatar;