Adding socket support

-- When upload a video to a certain category, this video will be part of a user group automatically
-- one category can add your video in more than one user group
-- Allow user add some extra info in JSON format, for example bank info and other thing
-- This is based on users_extra_info table 
-- add full text search https://github.com/WWBN/AVideo/issues/4343

plugin/Socket/script.js

@@ -0,0 +1,78 @@
+var socketMyResourceId = 0;
+function socketConnect() {
+    console.log('Trying to reconnect on ' + webSocketURL);
+    conn = new WebSocket(webSocketURL);
+    conn.onopen = function (e) {
+        console.log("Socket onopen", e);
+        socketMyResourceId = 0;
+        sendSocketMessage("webSocketToken", "");
+        return false;
+    };
+    conn.onmessage = function (e) {
+        console.log("Socket onmessage", e);
+        if (!socketMyResourceId) {
+            socketMyResourceId = parseInt(e.data);
+            var msg = "Socket socketMyResourceId " + socketMyResourceId;
+            sendSocketMessage(msg, "");
+            console.log(msg);
+        } else {
+            var json = JSON.parse(e.data);
+            var myfunc;
+            if (json.callback) {
+                var code = "if(typeof " + json.callback + " == 'function'){myfunc = " + json.callback + ";}else{myfunc = defaultCallback;}";
+                console.log(code);
+                eval(code);
+            } else {
+                myfunc = defaultCallback;
+            }
+            myfunc(json);
+        }
+
+    };
+    conn.onclose = function (e) {
+        console.log('Socket is closed. Reconnect will be attempted in 1 second.', e.reason);
+        setTimeout(function () {
+            socketConnect();
+        }, 1000);
+    };
+
+    conn.onerror = function (err) {
+        console.error('Socket encountered error: ', err.message, 'Closing socket');
+        conn.close();
+    };
+}
+
+function sendSocketMessage(msg, callback) {
+    if (conn.readyState === 1) {
+        conn.send(JSON.stringify({msg: msg, webSocketToken: webSocketToken, callback: callback}));
+    } else {
+        console.log('Socket not ready send message in 1 second');
+        setTimeout(function () {
+            sendSocketMessage(msg, callback);
+        }, 1000);
+    }
+}
+
+function sendSocketMessageToUser(msg, users_id, callback) {
+    if (conn.readyState === 1) {
+        conn.send(JSON.stringify({msg: msg, webSocketToken: webSocketToken, users_id: users_id, callback: callback}));
+    } else {
+        console.log('Socket not ready send message in 1 second');
+        setTimeout(function () {
+            sendSocketMessageToUser(msg, users_id, callback);
+        }, 1000);
+    }
+}
+
+function isSocketActive(){
+    return typeof conn != 'undefined' && conn.readyState === 1;
+}
+
+function defaultCallback(json) {
+    console.log('defaultCallback', json);
+}
+
+$(function () {
+    socketConnect();
+    sendSocketMessage("test", "");
+});