Made some pre-setup server-side to make avoid loading screens on website load

scripts/bg.js

@@ -12,9 +12,10 @@ function existsSync(filename) {
   }
 }
 
-module.exports = function(set, app, data) {
+module.exports = function(set, app, data, scriptMethods) {
   var keys = Object.keys(set.generators);
   var cache = {};
+  var fileNames = {};
 
   for(var i = 0; i < keys.length; ++i) {
     var fileName = "bg_" + keys[i].split('/').join('_') + ".png";
@@ -44,5 +45,19 @@ module.exports = function(set, app, data) {
     }).bind(binding));
 
     console.log('[INFO] bg for "'+keys[i]+'" = "'+fileName+'"');
+
+    fileNames[keys[i]] = fileName;
+  }
+
+  scriptMethods.getBackgroundFromCookie = function(cookies) {
+    var key;
+
+    if(Object.prototype.hasOwnProperty.call(cookies, 'last_generator')) {
+      key = cookies['last_generator'];
+    } else {
+      key = scriptMethods.getDefaultDataKey();
+    }
+
+    return 'body { background-image: url(' + fileNames[key] + '); }'
   }
 }

scripts/data.js

@@ -1,6 +1,7 @@
-module.exports = function(set, app, data) {
+module.exports = function(set, app, data, scriptMethods) {
   var keys = Object.keys(set.generators);
   var cache = {};
+  var defaultKey = null;
 
   for(var i = 0; i < keys.length; ++i) {
     var bindObj = {key: keys[i]}
@@ -22,6 +23,27 @@ module.exports = function(set, app, data) {
 
     if(i === 0) {
       app.get('/d/default', func);
+      defaultKey = keys[i];
     }
   }
+
+  scriptMethods.getDefaultDataKey = function() {
+    return defaultKey;
+  }
+
+  scriptMethods.getInitDataFromCookie = function(cookies) {
+    var key;
+    if(Object.prototype.hasOwnProperty.call(cookies, 'last_generator')) {
+      key = cookies['last_generator'];
+    } else {
+      key = defaultKey;
+    }
+
+    if(!cache.hasOwnProperty(key)) {
+      data.generators[key].catId = key.split('/')[0];
+      cache[key] = JSON.stringify(data.generators[key]);
+    }
+
+    return cache[key];
+  }
 }

scripts/list.js

@@ -1,4 +1,4 @@
-module.exports = function(set, app) {
+module.exports = function(set, app, data, scriptMethods) {
   var setHeader = {
     categories: set.categoryNames,
     generators: {}
@@ -10,8 +10,14 @@ module.exports = function(set, app) {
     setHeader.generators[genKeys[i]] = set.generators[genKeys[i]].name;
   }
 
+  var setHeaderJson = JSON.stringify(setHeader);
+
+  scriptMethods.getGeneratorListJsonData = function() {
+    return setHeaderJson;
+  }
+
   app.get('/l/generators', function (req, res) {
     res.header("Content-Type", "application/json; charset=utf-8");
-    res.end(JSON.stringify(setHeader));
+    res.end(setHeaderJson);
   });
 }