#include "fbgui.h"
#include "fbbrowser.h"
#include "DownloadManager.h"
#include <getopt.h>
#include <limits.h>
#include <unistd.h>
#include <QApplication>
#include <QThread>

void printUsage()
{
    // Prints usage information, incomplete.
    // Q: How is the -qws option handled, mention it here or not?
    QTextStream qout(stdout); 
    qout << QObject::tr("Usage: ./fbgui [OPTIONS] <URL>") << endl;
    qout << QObject::tr("Options:") << endl;
    qout << "-h or --help " << QObject::tr("Prints usage information.") << endl;
    qout << "-qws         " << QObject::tr("Set this application to also be the server application.")  << endl;
    qout << "             " << QObject::tr("Skip this option if you have a QT server application") << endl;
    exit(1);
}

int main(int argc, char *argv[])
{
    // Parse command line arguments.
    int opt = 0;
    int longIndex = 0;
    // Declare the short options as a char*, these have exactly one - followed by letter from optString.
    // For example: ./fbbrowser -h
    // Declare the long options in the const struct, these have two - followed by a string found in longOpts[].
    // Same as:     ./fbbrowser --help
    // Note: I included 'qws' here to not have errors, when setting fbbrowser to be the server app aswell.
    static const char *optString = "hqwsdiplay";
    static const struct option longOpts[] =
    {
        // If an option requires parameters, write this number instead of no_argument.
        // The last argument, is the corresponding char to the option string.
    	{"help", no_argument, NULL, 'h'}
    };
    // getopt_long returns the index of the next argument to be read, -1 if there are no more arguments.
    opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
    while (opt != -1)
    {
    	switch(opt)
        {
        case 'h':
            printUsage();
            break;
        }
        opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
    }
    // This is the main object of a QT Application.
    QApplication a(argc, argv);
    // Get the application path and prints on screen.
    qDebug() << "Application Path: " << a.applicationDirPath();
    // Is this really needed, since we kill the app through the fbbrowser object?
    QObject::connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
    // This part reads the URL to load from the arguments given through the commandline.
    QUrl url;
    if (argc > 1)
       url = QUrl(argv[1]);
    else //Default URL to load
       url = QUrl("http://132.230.4.3/webkitTest.html");
    // Create a new Framebuffer-Browser object for displaying the given URL.
    fbbrowser* fbb = new fbbrowser(url);

    // Listen to the signalQuitAll() Signal to kill the app from within the browser.
    QObject::connect(fbb, SIGNAL(killApp()), &a, SLOT(quit()));

    // Display the browser.
    fbb->show();

    // Execute the application.
    return a.exec();
}