module.exports = function(RED) {


    function WhatsappIn(config) {
        RED.nodes.createNode(this,config);
        var node = this;
        var whatsappLinkNode = RED.nodes.getNode(config.whatsappLink);
        node.waClient = whatsappLinkNode.client;


        function SetStatus(WAStatus, color){
            node.status({fill:color,shape:"dot",text:WAStatus});   
        };
               
        node.waClient.on('message', async msg => {
            msg.payload = msg.body;
            node.send(msg);

            // Whatsapp Chats testing text.
            if(msg.body === '!nodered') {
                var fromContact = msg.from.match(/\d+/);
                msg.reply('Hi from Node-Red');
                msg.payload = `!nodered recieved from ${fromContact}.`
                node.send(msg);
            }
        });

        //whatsapp Status Parameters----
        node.waClient.on('qr', (qr) => {
            SetStatus("QR Code Generated", "yellow");
            QRCode.toDataURL(qr, function(err, url){
                msg = {payload : url};
                node.send(msg);
            });
        });
        
        node.waClient.on('auth_failure', () => {
            SetStatus('Not Connected','red');
        });
                
        node.waClient.on('loading_screen', () => {
            SetStatus('Connecting...','yellow');
        });
        
        node.waClient.on('ready', () => {
            SetStatus('Connected','green');
        });

        node.waClient.on('disconnected', () => {
            SetStatus("Disconnected","red");
        });

    }
    RED.nodes.registerType("whatsapp-in", WhatsappIn);
}