module.exports = function(RED) {
    const QRCode = require('qrcode');
     
    function WhatsappAdmin(config) {
        RED.nodes.createNode(this,config);
        var node = this;
        var whatsappLinkNode = RED.nodes.getNode(config.whatsappLink);
        node.client = whatsappLinkNode.client;
        // RED.comms.publish("whatsappLinkNodeID", node.id)
            
        function SetStatus(WAStatus, color){
            node.status({fill:color,shape:"dot",text:WAStatus});
            msg = {payload : WAStatus};
            node.send(msg);    
        };
            
        
        // Commands recived for Whatsapp Admin.
        this.on('input', async function(msg, send){
            if (msg.payload === "destroy") {
                if(node.client.clientType === "waWebClient"){
                    node.clinet.WAClose();
                    SetStatus("Disconnected","red");
                } else {
                    var client = await node.client;
                    client.end();
                    SetStatus("Disconnected","red");
                }
            } 
            else if (msg.payload==="logout") {
                if(node.client.clientType === "waWebClient"){
                    node.client.logout();
                    SetStatus("Logged Out","red");
                } else{
                    var client = await node.client;
                    client.logout();
                    SetStatus("Disconnected","red");
                }
            }
            else if (msg.payload === "test"){
                if(node.client.clientType === "waWebClient"){
                    msg.payload = await node.client.getState();
                    node.send(msg);
                } else {
                    var client = await node.client;
                    await client.sendPresenceUpdate('available')
                    SetStatus("Presence Avilable","green");
                }
            }           
            else if (msg.payload === "restart"){
                if(node.client.clientType === "waWebClient"){
                    node.client.WARestart();
                    SetStatus("Connecting...", "yellow");
                } else {
                    var client = await node.client;
                        client.end();
                        SetStatus("Restarting...", "yellow");
                        setTimeout(() => {
                            SetStatus("Please Deploy all nodes to subscribe for messgaes", "yellow");
                            node.client.clientStartFunction();
                        }, 3000)
                }
            };        
        });


        if(node.client.clientType === "waWebClient"){
            //Group Add/leave status-----
            node.client.on('group_join', async (notification)=>{
                msg.chat = await notification.getChat();
                msg.payload = msg.chat.name;
                msg.chatID = msg.chat.id.user || `No ID Avilable`;
                msg.type = notification.type;
                msg.notification = notification;
                node.send(msg);
                notification.reply('!Node-Red joined');
            });

            node.client.on('group_leave', async (notification)=>{
                msg.chat = await notification.getChat();
                msg.payload = msg.chat.name;
                msg.type = notification.type;
                msg.notification = notification;
                node.send(msg);
            });

            node.client.on('group_update', (msg)=>{
                node.send(msg);
            });

            
            //whatsapp Status Parameters----
            SetStatus("Connecting whatsapp...", "yellow");

            node.client.on('qr', (qr) => {
                SetStatus("Scan QR code to connect.", "yellow");
                QRCode.toDataURL(qr, function(err, url){
                    msg = {payload : url};
                    node.send(msg);
                    let qrImageWithID = {};
                    qrImageWithID.id = node.id;
                    qrImageWithID.image = url;
                    RED.comms.publish("whatsappLinkQrCode", qrImageWithID);
                });
            });
            
            node.client.on('auth_failure', () => {
                SetStatus('Connection Fail.','red');
            });
                    
            node.client.on('loading_screen', () => {
                SetStatus('Connecting...','yellow');
                let qrImageWithID = {};
                qrImageWithID.id = node.id;
                qrImageWithID.image = null;
                RED.comms.publish("whatsappLinkQrCode", qrImageWithID);
            });
            
            node.client.on('ready', () => {
                SetStatus('Connected','green');
            });

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

        if(node.client.clientType === "waSocketClient"){
            var client = null
            async function clientFromWhatsappLite(){
                client = await node.client;
                client.ev.on('connection.update', (updates)=>{

                    if(updates.qr){
                        QRCode.toDataURL(updates.qr, function(err, url){
                            var qrImageWithID = {};
                            qrImageWithID.id = node.id;
                            qrImageWithID.image = url;
                            RED.comms.publish("whatsappLinkQrCode", qrImageWithID);
                        });
    
                        QRCode.toString(updates.qr, {type : 'terminal', small:true }, function(err, QRTerminal){
                            node.log(`To Connect, Scan the QR Code through your Whatsapp Mobile App.`)
                            console.log("");
                            console.log(QRTerminal);
                        });
                    }
                    if (connection === 'open') {
                        var qrImageWithID = {};
                        qrImageWithID.id = node.id;
                        qrImageWithID.image = null;
                        RED.comms.publish("whatsappLinkQrCode", qrImageWithID);
                    }

                    //console.log(updates);
                    var {connection} = updates
                    //Setting conncetion status indication
                    if(connection === 'open'){
                        SetStatus("Connected", "green");
                    }
                    else if(updates.isOnline){
                        SetStatus("Connected", "green");
                    }
                    else if(connection === 'close'){
                        SetStatus("Disconnected", "red");
                    }
                    else if(connection === 'connecting'){
                        SetStatus("Connecting...", "yellow");
                    }
                    else if(updates.qr){
                        SetStatus("Scan QR Code to Connect.", "yellow");
                    }
                })
            
            }
            clientFromWhatsappLite();

        };

        this.on(`close`, ()=>{
            SetStatus("Disconnected", "red");
        });
    }
    RED.nodes.registerType("admin", WhatsappAdmin);
}