/*
	Imaginary Teleprompter
	Copyright (C) 2015 Imaginary Sense Inc. and contributors

	This file is part of Imaginary Teleprompter.

	Imaginary Teleprompter is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	Imaginary Teleprompter is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with Imaginary Teleprompter.  If not, see <https://www.gnu.org/licenses/>.
*/

"use strict";

// IMPORT MAIN PROGRAM MODULES
if (require('electron-squirrel-startup')) return;
const { electron,
	app, // Module to control application's life.
	BrowserWindow, // Module to create native browser window.
	Menu, // The menu class is used to create native menus that can be used as application menus and context menus.
	ipcMain, // The ipcMain module, when used in the main process, handles asynchronous and synchronous messages sent from a renderer process (web page).
	shell, // Module that provides functions related to desktop integration.
	globalShortcut // Module can register/unregister a global keyboard shortcut with the operating system so that you can customize the operations for various shortcuts.
	// Keep a global reference of the window object, if you don't, the window will be closed automatically when the JavaScript object is garbage collected.
} = require('electron');
const nativeImage = require('electron').nativeImage;
const path = require('path');
const url = require('url');
const appDataFolder = app.getPath('appData') + '/ImaginarySense/Teleprompter';
// This should be placed at top of main.js to handle setup events quickly
if (handleSquirrelEvent()) {
  // squirrel event handled and app will exit in 1000ms, so don't do anything else
  return;
}

function handleSquirrelEvent() {
  if (process.argv.length === 1) {
	return false;
  }

  const ChildProcess = require('child_process');

  const appFolder = path.resolve(process.execPath, '..');
  const rootAtomFolder = path.resolve(appFolder, '..');
  const updateDotExe = path.resolve(path.join(rootAtomFolder, 'Update.exe'));
  const exeName = path.basename(process.execPath); 

  const spawn = function(command, args) {
	let spawnedProcess, error;

	try {
	  spawnedProcess = ChildProcess.spawn(command, args, {detached: true});
	} catch (error) {}

	return spawnedProcess;
  };

  const spawnUpdate = function(args) {
	return spawn(updateDotExe, args);
  };

  const squirrelEvent = process.argv[1];
  switch (squirrelEvent) {
	case '--squirrel-install':
	case '--squirrel-updated':
	  // Optionally do things such as:
	  // - Add your .exe to the PATH
	  // - Write to the registry for things like file associations and
	  //   explorer context menus

	  // Install desktop and start menu shortcuts
	  spawnUpdate(['--createShortcut', exeName]);

	  setTimeout(app.quit, 1000);
	  return true;

	case '--squirrel-uninstall':
	  // Undo anything you did in the --squirrel-install and
	  // --squirrel-updated handlers

	  // Remove desktop and start menu shortcuts
	  spawnUpdate(['--removeShortcut', exeName]);

	  setTimeout(app.quit, 1000);
	  return true;

	case '--squirrel-obsolete':
	  // This is called on the outgoing version of your app before
	  // we update to the new version - it's the opposite of
	  // --squirrel-updated

	  app.quit();
	  return true;
  }
};

// TELEPROMPTER CODE BEGINS

// Set Global window variable.
let mainWindow = null,
	externalPrompt = null,
	licenseWindow = null,
	tic = 0,
	toc = 1;

function createMainWindow () {
	if (process.platform === 'win32')
		mainWindow = new BrowserWindow({webPreferences: {nodeIntegration: true}, width: 1280, height: 800, javascript: true, title: 'Teleprompter by Imaginary Sense', useContentSize: true, nodeIntegration: true, icon: __dirname + '/icon.ico'});
	else
		mainWindow = new BrowserWindow({webPreferences: {nodeIntegration: true}, show: false, width: 1280, height: 800, javascript: true, title: 'Teleprompter by Imaginary Sense', useContentSize: true, nodeIntegration: true, icon: __dirname + '/icon.ico'});
	mainWindow.loadURL('file://' + __dirname + '/index.html');
	mainWindow.once('ready-to-show', () => {
		mainWindow.show();
	});
	// Close Window
	mainWindow.on('closed', () =>{
		if (externalPrompt!==null)
			externalPrompt.close();
		// Dereference the windows object, usually you would store  windows
		// in an array if your app supports multi windows, this is the time
		// when you should delete the corresponding element.
		mainWindow = null;
		if (process.platform !== 'darwin')
			app.quit();
	});

	// Debug tools
	let contents = mainWindow.webContents;
	contents.on('devtools-opened', () => {
		contents.executeJavaScript('enterDebug()');
	});
	contents.on('devtools-closed', () => {
		contents.executeJavaScript('exitDebug()');
	});
}

app.on('activate', () => {
	if (!mainWindow)
		createMainWindow();
});

// This method will be called when Electron has finished initialization and is ready to create browser windows.
app.on('ready', () => { 

	// Create the browser window.
	createMainWindow();

	// Setup menu
	setupMenu();

	// Image Server
	imageServer();
});

// Frame skip forlternative sync
function frameSkip() {
	tic--;
	if (tic<0)
		tic=toc;
	return tic===toc;
}

// Inter Process Communication
// Send a message to the renderer process...
ipcMain.on('asynchronous-message', (event, arg) => {
	// console.log(arg);
	if (arg === "network") {
		// runSocket(event);
	}
	else if (arg === "openInstance") {
		externalPrompt = new BrowserWindow({
			webPreferences: {
				title: 'Teleprompter Instance',
				// blinkFeatures: 'KeyboardEventKey',
				// titleBarStyle: 'hidden-inset',
				offscreen: true
			}
		});
		const indexPath = path.resolve(__dirname, '.', 'teleprompter.html')
		const indexURL = url.format({
			protocol: 'file',
			pathname: indexPath,
			slashes: true,
			// hash: encodeURIComponent(JSON.stringify(someArgs))
		})
		console.log(indexPath);
		console.log(indexURL);
		externalPrompt.loadURL(indexURL);
		externalPrompt.setIgnoreMouseEvents(false);
		externalPrompt.webContents.setFrameRate(30);
		externalPrompt.webContents.on('paint', (updateEvent, dirty, image) => {
			// Frame sipping on canvas
			if (frameSkip()) {
				// Get pointer to image from canvas.
				const size = externalPrompt.getSize(),
					bitmap = image.getBitmap();
				event.sender.send('asynchronous-reply',{ 'option':'c', 'dirty':dirty, 'size':size, 'bitmap':bitmap });
				// Documentation
				// https://electron.atom.io/docs/tutorial/offscreen-rendering/
				// Known issues
				// https://github.com/electron/electron/issues/7350
				// https://github.com/electron/electron/issues/8051
			}
		});
		externalPrompt.on('closed', () =>{
			externalPrompt = null;
			if (mainWindow!==null)
				mainWindow.webContents.send('asynchronous-reply', {option:'restoreEditor'});
		});
	}
	else if (arg === "closeInstance") {
		if (externalPrompt!==null)
			externalPrompt.close();
	}
	else if (arg === "prepareLinks")
		event.sender.send('asynchronous-reply',{'option':'prepareLinks'});
	else {
		if (externalPrompt!==null) {
			console.log(arg);
			externalPrompt.webContents.send('asynchronous-reply', {option:'message', data:arg} );
		}
	}
});

// Multiplatform menu configurations

function setupMenu() {
	// Create our menu entries so that we can use MAC shortcuts
	const {app, Menu} = require('electron');

	// Prepare menu
	const template = [
	{
		label: 'Edit',
		submenu: [
			{role: 'undo'},
			{role: 'redo'},
			{type: 'separator'},
			{role: 'cut'},
			{role: 'copy'},
			{role: 'paste'},
			{role: 'pasteandmatchstyle'},
			{role: 'delete'},
			{role: 'selectall'}
		]
	},
	{
		label: 'View',
		submenu: [
			{role: 'togglefullscreen'}
		]
	},
	{
		role: 'window',
		submenu: [
			{role: 'minimize'},
			{role: 'close'}
		]
	},
	{
		role: 'help',
		submenu: [
			{
				label: 'About Electron',
				click () { require('electron').shell.openExternal('https://electron.atom.io') }
			},
			{
				label: 'About CKEditor',
				click () { require('electron').shell.openExternal('http://ckeditor.com/') }
			},
			{type: 'separator'},
			{
				label: 'View License',
				click () {
					if (!licenseWindow) {
						licenseWindow = new BrowserWindow({width: 640, height: 480, javascript: false, title: 'General Public License v3', useContentSize: false, nodeIntegration: false, icon: __dirname + '/icon.ico'});
						licenseWindow.loadURL('file://' + __dirname + '/LICENSE');
						licenseWindow.on('closed', () => {
							licenseWindow = null;
						});
					}
					else
						licenseWindow.focus();
				}
			},
			{
				label: 'About Imaginary Sense',
				click () { require('electron').shell.openExternal('http://imaginary.tech/teleprompter') }
			}
		]
	},
	];
	
	// Personalize menu for OS X
	if (process.platform === 'darwin') {
		template.unshift({
			label: app.getName(),
			submenu: [
				{role: 'about'},
				{role: 'quit'}
			]
		})
		// Remove Start Dictation, Emoji & Symbols from Edit submenu
		const {systemPreferences} = require('electron');

		systemPreferences.setUserDefault('NSDisabledDictationMenuItem', 'boolean', true);
		systemPreferences.setUserDefault('NSDisabledCharacterPaletteMenuItem', 'boolean', true);
	}

	// Enable menu on the following platforms
	if (process.platform === 'darwin') {
		const menu = Menu.buildFromTemplate(template);
		Menu.setApplicationMenu(menu);
	} else {
		// Disables menu in systems where it can be disabled and doesn't need it'.
		Menu.setApplicationMenu(null);
	}
}

function imageServer() {
	/*
	//express server for image upload
	var express = require('express');
	var cors = require('cors') 
	var app = express();

	var multipart = require('connect-multiparty');
	var multipartMiddleware = multipart();

	var fs = require('fs'); 
	var shell = require('shelljs');

	var uploadPath = appDataFolder + '/uploads/';
	var imageServerPort = 3001;
	var imageServerURL = 'http://localhost:' + imageServerPort + '/image/';

	//Make sure directories exist
	shell.mkdir('-p', uploadPath);

	app.use(cors()); 
	app.post('/upload', multipartMiddleware, function(req, res) {
			fs.readFile(req.files.upload.path, function (err, data) {
					var newPath = uploadPath + req.files.upload.name;
					fs.writeFile(newPath, data, function (err) { 
						if (err) console.log({err: err});
							else {  
								if(req.query.command == "QuickUpload"){
									res.send({
										"uploaded": 1,
										"fileName": req.files.upload.name,
										"url": newPath
						});
								}else{
									var html;
										html = "";
										html += "<script type='text/javascript'>";
										html += "    var funcNum = " + req.query.CKEditorFuncNum + ";";
										html += "    var url     = \" " + imageServerURL + req.files.upload.name + "\";";
										html += "    var message = \"Uploaded file successfully\";";
										html += "";
										html += "    window.parent.CKEDITOR.tools.callFunction(funcNum, url, message);";
										html += "</script>";

						res.send(html);
								} 
							}
					});
			});
	});

	app.use('/image', express.static(uploadPath));

	//If port changes from 3000, need to be also change in the ckeditor config.js
	app.listen(imageServerPort, function () {
		console.log('Image Upload Server running at port ' + imageServerPort + '!');
		console.log('Image Upload Path: '+ uploadPath);
	});
	*/
}

// REMOTE CONTROL BEGINS

// Get computer IPs for remote control
function getIP() {
	var os = require('os');
	var nets = os.networkInterfaces();
	for ( var a in nets) {
		var ifaces = nets[a];
		for ( var o in ifaces) {
		if (ifaces[o].family == "IPv4" && !ifaces[o].internal) {
			return ifaces[o].address;
		}
		}
	}
	return null;
}

// Remote control server
// function runSocket(event) {
// 	var ip = getIP();
// 	if(ip){
// 	  var app2 = require('express')();
// 	  var http = require('http').Server(app2);
// 	  var bonjour = require('bonjour')();
// 	  var io = require('socket.io')(http);

// 	  io.sockets.on('connection', function (socket) {
// 		socket.on('command',function(res){
// 			if(res.hasOwnProperty('key') > 0){
// 			  event.sender.send('asynchronous-reply',{'option':'command','data':res});
// 			}
// 		});
// 		socket.on('disconnect', function () {});
// 	  });

// 	  http.listen(3000, function(){
// 		event.sender.send('asynchronous-reply',{'option':'qr','data':ip});
// 		//console.log('http://' + ip + ':3000/');
// 	  });

// 	  bonjour.publish({ name: 'Teleprompter', type: 'http', port: 3000 });
// 	  bonjour.find({ type: 'http' }, function (service) {
// 		//console.log('Found an HTTP server:'+ service);
// 		event.sender.send('asynchronous-reply',{'option':'qr','data':service.host});
// 	  });
// 	}else{
// 	  setTimeout(function(){
// 		runSocket(event);
// 	  }, 1000);
// 	}
// }

// REMOTE CONTROL ENDS