MAPG-178 add Google Analytics

style adaptations
cookie notice improvements

public/static/js/game.js

@@ -16,7 +16,7 @@
 
         initialize: function () {
             document.getElementById('loading').style.visibility = 'visible';
-            document.getElementById('guessCover').style.visibility = 'visible';
+            document.getElementById('panoCover').style.visibility = 'visible';
             document.getElementById('currentRound').innerHTML = '1/' + String(Game.NUMBER_OF_ROUNDS);
             document.getElementById('currentScoreSum').innerHTML = '0/0';
 
@@ -27,7 +27,7 @@
 
             MapGuesser.httpRequest('GET', '/game/' + mapId + '/newPlace.json', function () {
                 document.getElementById('loading').style.visibility = 'hidden';
-                document.getElementById('guessCover').style.visibility = 'hidden';
+                document.getElementById('panoCover').style.visibility = 'hidden';
 
                 if (this.response.error) {
                     //TODO: handle this error
@@ -98,7 +98,7 @@
                 lastRound.line.setVisible(false);
             }
 
-            document.getElementById('guessCover').style.visibility = 'hidden';
+            document.getElementById('panoCover').style.visibility = 'hidden';
             document.getElementById('showGuessButton').style.visibility = null;
             document.getElementById('guess').style.visibility = null;
             document.getElementById('guess').classList.remove('result')
@@ -152,7 +152,7 @@
                 document.getElementById('guess').classList.remove('adapt');
             }
             document.getElementById('loading').style.visibility = 'visible';
-            document.getElementById('guessCover').style.visibility = 'visible';
+            document.getElementById('panoCover').style.visibility = 'visible';
 
             var data = new FormData();
             data.append('lat', String(guessPosition.lat));
@@ -370,6 +370,14 @@
         }
     };
 
+    MapGuesser.sessionAvailableHooks.reinitializeGame = function () {
+        MapGuesser.httpRequest('GET', '/game/' + mapId + '/json', function () {
+            mapBounds = this.response.bounds;
+
+            Game.initialize();
+        });
+    };
+
     if (!('ontouchstart' in document.documentElement)) {
         Game.adaptGuess = true;
     }

public/static/js/mapguesser.js

@@ -1,4 +1,49 @@
 var MapGuesser = {
+    cookiesAgreed: false,
+    sessionAvailableHooks: {},
+
+    initGoogleAnalitics: function () {
+        if (typeof GOOGLE_ANALITICS_ID === 'undefined') {
+            return;
+        }
+
+        // Global site tag (gtag.js) - Google Analytics
+        var script = document.createElement('script');
+        script.src = 'https://www.googletagmanager.com/gtag/js?id=' + GOOGLE_ANALITICS_ID;
+        script.async = true;
+
+        document.head.appendChild(script);
+
+        window.dataLayer = window.dataLayer || [];
+        function gtag(){dataLayer.push(arguments);}
+        gtag('js', new Date());
+        gtag('config', GOOGLE_ANALITICS_ID);
+    },
+
+    agreeCookies: function () {
+        if (MapGuesser.cookiesAgreed) {
+            return;
+        }
+
+        var expirationDate = new Date(new Date().getTime() + 20 * 365 * 24 * 60 * 60 * 1000).toUTCString();
+        document.cookie = 'COOKIES_CONSENT=1; expires=' + expirationDate + '; path=/';
+
+        MapGuesser.initGoogleAnalitics();
+        MapGuesser.httpRequest('GET', '/startSession.json', function () {
+            ANTI_CSRF_TOKEN = this.response.antiCsrfToken;
+
+            for (var hookId in MapGuesser.sessionAvailableHooks) {
+                if (!MapGuesser.sessionAvailableHooks.hasOwnProperty(hookId)) {
+                    continue;
+                }
+
+                MapGuesser.sessionAvailableHooks[hookId]();
+            }
+        });
+
+        MapGuesser.cookiesAgreed = true;
+    },
+
     httpRequest: function (method, url, callback, data) {
         var xhr = new XMLHttpRequest();