Pusher part one

src/js/services/pusher/middleware.js

@@ -0,0 +1,58 @@
+
+var actions = require('./actions.js')
+
+const PusherMiddleware = (function(){ 
+
+    // container for the actual Mopidy socket
+    var socket = null;
+
+    // handle all manner of socket messages
+    const handleMessage = (ws, store, message) => {
+        switch( message.action ){
+            default:
+                store.dispatch({ type: 'PUSHER_'+message.action.toUpperCase(), data: message.data })
+        }
+    }
+
+    /**
+     * Middleware
+     *
+     * This behaves like an action interceptor. We listen for specific actions
+     * and handle special functionality. If the action is not in our switch, then
+     * it just proceeds to the next middleware, or default functionality
+     **/
+    return store => next => action => {
+
+        switch(action.type) {
+
+            case 'PUSHER_CONNECT':
+
+                if(socket != null) socket.close();
+                store.dispatch({ type: 'PUSHER_CONNECTING' });
+
+                var state = store.getState();
+
+                socket = new WebSocket(
+                    'ws://'+state.mopidy.host+':'+state.pusher.port+'/pusher'
+                );
+
+                socket.onopen = function(){
+                    store.dispatch({ type: 'PUSHER_CONNECTED' });
+                };
+
+                socket.onmessage = function(message){
+                    var message = JSON.parse(message.data);
+                    handleMessage( socket, store, message )
+                };
+
+                break;
+
+            // This action is irrelevant to us, pass it on to the next middleware
+            default:
+                return next(action);
+        }
+    }
+
+})();
+
+export default PusherMiddleware