first pass at save and load preferences

.gitignore

@@ -1,2 +1,3 @@
 node_modules/
-.idea/
+.idea/
+data/

js/persistence.js

@@ -64,10 +64,12 @@ persistence.save = function () {
 persistence.load = function () {
     console.log("persistence.load");
     var req = new XMLHttpRequest();
-    req.open("GET", "/preferences");
 
     req.addEventListener("load", function (evt) {
         console.log("load call completed", evt);
+
+        preferenceStore = JSON.parse( evt.currentTarget.response).preferences;
+        cssEnactor.enact( preferenceStore, 'preview');
     });
 
     req.addEventListener("error", function (evt) {
@@ -79,6 +81,7 @@ persistence.load = function () {
     var loadDetails = {
         filename: filename
     };
+    req.open("GET", "/preferences/" + filename);
 
     req.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
 

server.js

@@ -20,13 +20,14 @@ app.post( '/preferences', function( request, response){
 
     console.log( 'in post preferences');
     let preferencesJSON = request.body;
-
+    fs.writeFileSync('data/' + preferencesJSON.filename, JSON.stringify(preferencesJSON));
     console.log( preferencesJSON);
-});
+    response.end("{saved: true}");
 
-app.get( '/preferences', function( request, response){
+});
+app.get( '/preferences/:filename', function( request, response){
 
-    console.log( 'in get preferences');
+    response.end(fs.readFileSync('data/' + request.params.filename));
 
 });
 
@@ -48,4 +49,4 @@ app.listen(port, function(err) {
     }
 
     console.log('server is listening on ' + port);
-})
+});