const { ipcRenderer } = require('electron');
let netmask = require('netmask').Netmask;
let dgram = require('dgram');
let bonjour = require('bonjour')();
let net = require("net");
let os = require("os");
let ip = require("ip");


let DEVICE = require("./device.js");
let SEARCH = require("./search.js");
let PLUGINS = require("./plugins.js");


var searching = false;
var allServers = false;

searchAll = function(){
	if(searching){
		return true;
	}
	searching = true;
	ipcRenderer.send("disableSearchAll", "");
	document.getElementById("search-button").style.opacity = 0.2;
	//console.clear();

	for(var i in DEVICE.all){
		DEVICE.infoUpdate(DEVICE.all[i], "status", "refresh");
	}

	console.log("Searching...")


	//findOnlineDevices();
	allServers = getServers();
	var TCPFlag = true;
	if(allServers.length>2046){
		alert("Unable to search for TCP devices - subnet too large!\n\nCue View requires subnet 255.255.248.0 (/21) or smaller.")
		TCPFlag = false;
	}

	console.log(PLUGINS)

	for(var p in PLUGINS.all){
		var plugin = PLUGINS.all[p];
		console.log(p)
		try{
			switch(plugin.searchOptions.type){
				case "TCPport":
					if(TCPFlag){
						newSearchTCP(p, plugin);
					}
				break;
				case "Bonjour":
					newSearchBonjour(p, plugin)
				break;
				case "UDPsocket":
					newSearchUDP(p, plugin)
				break;
			}
		}catch(err){
			console.error("Unable to search for plugin "+p)
		}
	}

	//searchBonjour();
	//searchTCP();
	//searchUDP();

	setTimeout(function(){
		searching = false;
		document.getElementById("search-button").style.opacity = "";

		for(var i=0; i<searchSockets.length; i++){
			try{searchSockets[i].close();}catch(err){}
		}

		ipcRenderer.send("enableSearchAll", "");

	}, 5000)
}
module.exports.searchAll = searchAll;




 //  ____              _                  
 // |  _ \            (_)                 
 // | |_) | ___  _ __  _  ___  _   _ _ __ 
 // |  _ < / _ \| '_ \| |/ _ \| | | | '__|
 // | |_) | (_) | | | | | (_) | |_| | |   
 // |____/ \___/|_| |_| |\___/ \__,_|_|   
 //                  _/ |                 
 //                 |__/                  

newSearchBonjour = function(pluginType, plugin){
	bonjour.find({type: plugin.searchOptions.bonjourName}, function(e){
		console.log(pluginType)
		
		var validAddresses = [];
		for(var i in e.addresses){
			if(e.addresses[i].indexOf(":")==-1){
				validAddresses.push(e.addresses[i])
			}
		}
		
		DEVICE.registerDevice({
			type: pluginType,
			defaultName: e.name,
			port: e.port,
			addresses: validAddresses
		})
	});
}


// searchBonjour = function(){
// 	bonjour.find({type: "qlab"}, function(e){
// 		for(var i in e.addresses){
// 			if(e.addresses[i].indexOf(":")){
// 				e.addresses.splice(i, 1);
// 			}
// 		}
// 		DEVICE.registerDevice({
// 			type: "qlab",
// 			name: e.name,
// 			port: e.port,
// 			addresses: e.addresses
// 		})
// 	});


// }



 //  _______ _____ _____  
 // |__   __/ ____|  __ \ 
 //    | | | |    | |__) |
 //    | | | |    |  ___/ 
 //    | | | |____| |     
 //    |_|  \_____|_|     
                                          


newSearchTCP = function(pluginType, plugin){
	for(var i=0; i<allServers.length; i++){
		TCPtest(allServers[i], pluginType, plugin);
	}
}

TCPtest = function(ip, pluginType, plugin){
	var client = net.createConnection(plugin.searchOptions.testPort, ip, function(){
		client.write(plugin.searchOptions.searchBuffer);
		// DEVICE.registerDevice({
		// 	type: pluginType,
		// 	defaultName: plugin.defaultName,
		// 	port: plugin.defaultPort,
		// 	addresses: [ip]
		// })
	});
	client.on('data', (data) => {
		if(plugin.searchOptions.validateResponse(data)){
			DEVICE.registerDevice({
				type: pluginType,
				defaultName: plugin.defaultName,
				port: plugin.defaultPort,
				addresses: [ip]
			})
		}
		client.end();
	});
	client.on("error", function(err){
	 	//no device here
	});
} 



// from local-devices library
function getServers () {
  var interfaces = os.networkInterfaces()
  var result = []

  for (var key in interfaces) {
    var addresses = interfaces[key]
    for (var i = addresses.length; i--;) {
      var address = addresses[i]
      if (address.family === 'IPv4' && !address.internal) {
        var subnet = ip.subnet(address.address, address.netmask)
        var current = ip.toLong(subnet.firstAddress)
        var last = ip.toLong(subnet.lastAddress) - 1
        while (current++ < last) result.push(ip.fromLong(current))
      }
    }
  }

  return result;
}



findOnlineDevices = function(){
	var allInterfaces = require('os').networkInterfaces();
	var validInterfaces = [];
	for(var i in allInterfaces){
		for(var j=0; j<allInterfaces[i].length; j++){
			var iface = allInterfaces[i][j];

			if(iface.family=="IPv4" && iface.internal==false && iface.address.split(".")[0]!="169"){
				validInterfaces.push(iface);
			}
		}
	}

	for(var i=0; i<validInterfaces.length; i++){
		var block = new netmask(validInterfaces[i].cidr);
		var f = block.first.split(".");
		var l = block.last.split(".");
		var cur = [f[0], f[1], f[2], f[3]];

		for(var j=Number(f[2]); j<=Number(l[2]); j++){
			cur[2] = j;
			for(var k = Number(f[3]); k<Number(l[3]); k++){
				cur[3] = k;
				allIPs.push(cur[0]+"."+cur[1]+"."+cur[2]+"."+cur[3]);
			}
		}
	}
}




// window.searchTCP = function(){
// 	var allInterfaces = require('os').networkInterfaces();
// 	var validInterfaces = [];
// 	for(var i in allInterfaces){
// 		for(var j=0; j<allInterfaces[i].length; j++){
// 			var iface = allInterfaces[i][j];

// 			if(iface.family=="IPv4" && iface.internal==false && iface.address.split(".")[0]!="169"){
// 				validInterfaces.push(iface);
// 			}
// 		}
// 	}

// 	for(var i=0; i<validInterfaces.length; i++){
// 		var block = new netmask(validInterfaces[i].cidr);
// 		var f = block.first.split(".");
// 		var l = block.last.split(".");
// 		var cur = [f[0], f[1], f[2], f[3]];

// 		for(var j=Number(f[2]); j<=Number(l[2]); j++){
// 			cur[2] = j;
// 			for(var k = Number(f[3]); k<Number(l[3]); k++){
// 				cur[3] = k;
// 				var ip = cur[0]+"."+cur[1]+"."+cur[2]+"."+cur[3];

// 				TCPtest(ip, 3033);
// 				TCPtest(ip, 3039);
// 				TCPtest(ip, 3040);
// 			}
// 		}
// 	}
// }
// TCPtest = function(address, port){
// 	var client = net.createConnection(port, address, function(){
// 		if(port==3033){
// 			DEVICE.registerDevice({
// 				type: "eos",
// 				name: "ETC Eos Console",
// 				port: 3032,
// 				addresses: [address]
// 			});
// 		}else if(port==3040){
// 			DEVICE.registerDevice({
// 				type: "watchout",
// 				name: "Watchout",
// 				port: 3040,
// 				addresses: [address]
// 			});
// 		}
// 	});
// 	client.on("error", function(err){
// 	 	//no EOS here
// 	});
// }



 //  _    _ _____  _____  
 // | |  | |  __ \|  __ \ 
 // | |  | | |  | | |__) |
 // | |  | | |  | |  ___/ 
 // | |__| | |__| | |     
 //  \____/|_____/|_|     
                       
const pjLinkMessage = Buffer.from([0x25, 0x32, 0x53, 0x52, 0x43, 0x48, 0x0d]);
const xAirMessage = Buffer.from([0x2f, 0x78, 0x69, 0x6e, 0x66, 0x6f]);
var serverUDP = dgram.createSocket('udp4');
var serverUDP2 = dgram.createSocket('udp4');

var searchSockets = [];


newSearchUDP = function(pluginType, plugin){
	var i = searchSockets.push(dgram.createSocket('udp4'))-1;
	searchSockets[i].bind(plugin.searchOptions.listenPort, function(){
		searchSockets[i].send(plugin.searchOptions.searchBuffer, plugin.searchOptions.devicePort, '255.255.255.255', (err) => {
			//console.log(err)
		});
		setTimeout(function(){
			searchSockets[i].send(plugin.searchOptions.searchBuffer, plugin.searchOptions.devicePort, '255.255.255.255', (err) => {
				//console.log(err)
			});
		}, 100);
		setTimeout(function(){
			searchSockets[i].send(plugin.searchOptions.searchBuffer, plugin.searchOptions.devicePort, '255.255.255.255', (err) => {
				//console.log(err)
			});
		}, 400);

		searchSockets[i].on('message',function(msg,info){
			if(plugin.searchOptions.validateResponse(msg, info)){
				DEVICE.registerDevice({
					type: pluginType,
					defaultName: plugin.defaultName,
					port: plugin.defaultPort,
					addresses: [info.address]
				})
			}
		});

	});
	searchSockets[i].on('listening', function(){
	    searchSockets[i].setBroadcast(true);
	});
}


// searchUDP = function(){

// 	dgramPJLink = dgram.createSocket('udp4');
// 	dgramPJLink.bind(function(){
// 		dgramPJLink.send(pjLinkMessage, 4352, '255.255.255.255', (err) => {
// 			//console.log(err)
// 		});
// 		dgramPJLink.on('message',function(msg,info){
// 			if(msg.toString().indexOf("%2ACKN")==0){
// 				DEVICE.registerDevice({
// 					type: "pjlink",
// 					name: "PJLink Projector",
// 					port: 4352,
// 					addresses: [info.address]
// 				})
// 			}
// 		});

// 	});
// 	dgramPJLink.on('listening', function(){
// 	    dgramPJLink.setBroadcast(true);
// 	});


// 	dgramXAir = dgram.createSocket('udp4');
// 	dgramXAir.bind(function(){
// 		dgramXAir.send(xAirMessage, 10024, '255.255.255.255', (err) => {
// 			//console.log(err)
// 		});
// 		setTimeout(function(){
// 			dgramXAir.send(xAirMessage, 10024, '255.255.255.255', (err) => {
// 				//console.log(err)
// 			});
// 		}, 100);

// 		dgramXAir.on('message',function(msg,info){
// 			if(msg.toString().indexOf("/xinfo,ssss")){
// 				DEVICE.registerDevice({
// 					type: "xair",
// 					name: "X Air Mixer",
// 					port: 10024,
// 					addresses: [info.address]
// 				})
// 			}
// 		});

// 	});
// 	dgramXAir.on('listening', function(){
// 	    dgramXAir.setBroadcast(true);
// 	});
	

// }