#include "fbgui.h"
#include "sysinfo.h"
#include "loggerengine.h"
#include "downloadmanager.h"
#include "javascriptinterface.h"
#include "sysinfolibsysfs.h"

#include <iostream>
#include <QtWebKit>
#include <QxtCore>

QString fileToTriggerURL("");
QString sessionID("");
QUrl baseURL("");
QString binPath("");
QString downloadPath("");
int updateInterval = -1;
int debugMode = -1;

//-------------------------------------------------------------------------------------------
fbgui::fbgui()
{

	// test for libsys function
	SysInfoLibsysfs* sil = new SysInfoLibsysfs();
	sil->getInfoAboutNetworkInterface();
	sil->getInfoAboutClassNet();

	// setup basic debug
	qxtLog->disableLoggerEngine("DEFAULT");
	qxtLog->enableLogLevels(QxtLogger::DebugLevel);
	if (debugMode == 0){
		qxtLog->addLoggerEngine("std_logger", new LoggerEngine_std);
		qxtLog->initLoggerEngine("std_logger");
		qxtLog->setMinimumLevel("std_logger", QxtLogger::DebugLevel);
		qxtLog->debug() << "Initializing fbgui...";
	}

	// base of the gui

	_webView = new QWebView(this);
	// debug console split or normal browser
	if (debugMode == 1)
		setupDebugSplit();
	else {
		setCentralWidget(_webView);
	}

	// initialize javascript interface
	JavascriptInterface* jsi = new JavascriptInterface(_webView->page()->mainFrame());
	QObject::connect(jsi, SIGNAL(quitFbgui()), this, SLOT(close()));
	QObject::connect(_webView->page()->mainFrame(), SIGNAL(javaScriptWindowObjectCleared()),
						  jsi, SLOT(attachToDOM()));

	// initialize download manager
	DownloadManager* dm = new DownloadManager();
	QObject::connect(dm, SIGNAL(downloadInfo(const QString&, const double&)),
					jsi, SLOT(downloadInfo(const QString&, const double&)));
	QObject::connect(dm, SIGNAL(notify(const QString&)),
					jsi, SLOT(notify(const QString&)));
	QObject::connect(jsi, SIGNAL(requestFile(const QString&)), dm, SLOT(downloadFile(const QString&)));
	QObject::connect(dm, SIGNAL(updateProgress(const int&, const double&, const QString&)),
					jsi, SLOT(updateProgressBar(const int&, const double&, const QString&)));
	QObject::connect(dm, SIGNAL(downloadQueueEmpty()), jsi, SLOT(callbackOnDlQueueFinished()));


	createActions();
	_webView->load(QUrl("qrc:/html/loadAbout.html"));
	// watch creation of fileToTriggerURL
	watchFileTrigger();

	// set properties
	setWindowTitle("fbgui");
	setAttribute(Qt::WA_QuitOnClose, true);
	setWindowFlags(Qt::FramelessWindowHint);
	showFullScreen();

}
//-------------------------------------------------------------------------------------------
void fbgui::createActions()
{
	// CTRL + X to kill the gui
	_quit = new QAction(tr("&quit"), this);
	_quit->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_X));
	this->addAction(_quit);
	connect(_quit, SIGNAL(triggered()), this, SLOT(close()));
}


//-------------------------------------------------------------------------------------------
void fbgui::watchFileTrigger()
{
    // check if the directory to fileToTriggerURL exists
    QFileInfo fi(fileToTriggerURL);
    if (!fi.absoluteDir().exists()){
    	qxtLog->debug() << fi.absolutePath() << " does not exists!";
    	if (QDir::home().mkdir(fi.absolutePath()))
    		qxtLog->debug() << "Successfully created " << fi.absolutePath();
    	else
    		qxtLog->debug() << "Failed to create " << fi.absolutePath();
    }
    else
    	qxtLog->debug() << fi.absolutePath() << " exists!";

    // check if fileToTriggerURL already exists
    if (fi.exists()){
    	qxtLog->debug() << fileToTriggerURL << " exists already!";
    	// try to remove it
    	QFile file(fi.absoluteFilePath());
    	if (file.remove())
    		qxtLog->debug() << "Purged: " << file.fileName();
    	else{
    		qxtLog->debug() << "Could not remove: " << file.fileName();
    		exit(EXIT_FAILURE);
    	}
    }
    else {
    	// watch the path where trigger file is expected
    	qxtLog->debug() << "Watching " << fi.absolutePath() << " for file: " << fi.fileName();
        QStringList pathToWatch(fi.absolutePath());
        _watcher = new QFileSystemWatcher(pathToWatch, this);
        QObject::connect(_watcher, SIGNAL(directoryChanged(const QString&)), this, SLOT(checkForTrigger(const QString&)));
    }
}
//-------------------------------------------------------------------------------------------
void fbgui::checkForTrigger(const QString& dirname)
{
	// check if fileToTriggerURL exists in the directory where the change occured
	QFileInfo tfi(fileToTriggerURL);
	QFileInfo fi(dirname + "/" + tfi.fileName());
	if (fi.exists()){
		qxtLog->debug() << fileToTriggerURL << " detected.";
		loadURL();
	}
	else
		// do nothing / keep watching
		qxtLog->debug() << "weird file!";
}
//-------------------------------------------------------------------------------------------
bool fbgui::checkHost() const
{
	QHostInfo hostInfo = QHostInfo::fromName(baseURL.host());
	if (hostInfo.error() != QHostInfo::NoError){
		qxtLog->debug() << "Lookup of " << baseURL.host() << "failed. Exiting...";
		return false;
	}
	else{
		qxtLog->debug() << "Lookup of " << baseURL.host() << " succeeded.";
		return true;
	}
}
//-------------------------------------------------------------------------------------------
void fbgui::loadURL(){
	// TODO actual data...
	// PBS POST data tests
	QNetworkRequest req(baseURL);
	QByteArray postData("mac=d8:d3:85:80:81:8b&hardwarehash=12341234123412341234123412341234&bootisoID=1&serial=");

	// serial number
	QByteArray serial;
	// fetch serial number from rootfs
	// try to open, TODO configurable path
	QFile file("/serial");
	if (!file.exists()){
		qxtLog->debug() << "No such file: " << file.fileName();
		serial = "10-23-43-55-67"; // tests
	}
	if (!file.open(QIODevice::ReadOnly)){
		qxtLog->debug() << "Could not open: " << file.fileName();
		serial = "10-23-43-55-67"; // tests
	}
	// everything ok, read data
	serial = file.readAll();
	file.close();

	if (serial.isEmpty())
		qxtLog->debug() << "No data in file: " << file.fileName();

	//qxtLog->debug() << "Serial number is: " <<  serial;


	// load if host is valid
	if (checkHost()){
		qxtLog->debug() << "Loading URL...";
		_webView->load(req, QNetworkAccessManager::PostOperation, postData);
	}
}
//-------------------------------------------------------------------------------------------
void fbgui::setupDebugSplit()
{
	_debugConsole = new QTextEdit(this);
	_debugConsole->setWindowFlags(Qt::FramelessWindowHint);
	QPalette pal;
	pal.setColor(QPalette::Base, Qt::black);
	_debugConsole->setPalette(pal);
	_debugConsole->setTextColor(Qt::white);
	_debugConsole->insertPlainText("Debug console initialized.\n");
	// enable custom logger engine
	qxtLog->addLoggerEngine("fb_logger", new LoggerEngine_fb(_debugConsole));
	//qxtLog->initLoggerEngine("fb_logger");
	qxtLog->setMinimumLevel("fb_logger", QxtLogger::DebugLevel);
	// display browser and debug in a splitter
	_splitter = new QSplitter(Qt::Vertical, this);
	_splitter->addWidget(_webView);
	_splitter->addWidget(_debugConsole);
	// CTRL + D  toggles debug window
	_toggleDebug = new QAction(tr("&toggleDebug"), this);
	_toggleDebug->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_D));
	addAction(_toggleDebug);
	connect(_toggleDebug, SIGNAL(triggered()), this, SLOT(toggleDebug()));
	//_webView->load(QUrl("qrc:/html/loadAbout.html"));
	setCentralWidget(_splitter);
}
//-------------------------------------------------------------------------------------------
void fbgui::toggleDebug()
{
	if (_debugConsole->isVisible())
		_debugConsole->hide();
	else
		_debugConsole->show();
}