#include "quam/main_window.h"

#include "quam/archive.h"
#include "quam/project.h"

#include <QErrorMessage>
#include <QFileDialog>
#include <QMdiSubWindow>

static bool applyActiveWin(QMdiArea *area, std::function<bool(Project *)> fn) {
	if(auto subWin = area->activeSubWindow()) {
		if(auto win = qobject_cast<Project *>(subWin->widget())) {
			return fn(win);
		}
	}
	return false;
}

MainWindow::MainWindow(QWidget *parent) :
	QMainWindow{parent},
	Ui::MainWindow{},
	m_errors{new QErrorMessage{this}}
{
	setupUi(this);

	actionClose->setShortcut(QKeySequence{QKeySequence::Close});
	actionOpen->setShortcut(QKeySequence{QKeySequence::Open});
	actionQuit->setShortcut(QKeySequence{QKeySequence::Quit});

	actionUp->setShortcut(Qt::ALT + Qt::Key_Up);
	actionTop->setShortcut(Qt::ALT + Qt::Key_Home);
	actionBack->setShortcut(QKeySequence{QKeySequence::Back});
	actionForward->setShortcut(QKeySequence{QKeySequence::Forward});
}

MainWindow::~MainWindow() {
}

void MainWindow::fileOpen() {
	auto fileName =
		QFileDialog::getOpenFileName(
			this,
			tr("Open Archive"),
			QString{},
			tr("Quake archive file (*.pak *.wad);;"
			   "Quake PACK file (*.pak);;"
			   "Quake WAD2 file (*.wad);;"
			   "All files (*)"));

	if(!fileName.isEmpty()) {
		try {
			auto path = std::filesystem::path(fileName.toStdString());
			auto st   = openReadBin(path);
			auto win  = new QMdiSubWindow;
			auto proj = new Project{st, m_errors, win};
			win->setWidget(proj);
			win->setAttribute(Qt::WA_DeleteOnClose);
			win->setWindowTitle(QString::fromStdString(path.filename()));
			mdiArea->addSubWindow(win);
			win->showMaximized();
		} catch(std::exception const &exc) {
			m_errors->showMessage(tr(exc.what()));
		}
	}
}

void MainWindow::fileClose() {
	if(auto win = mdiArea->activeSubWindow()) {
		mdiArea->removeSubWindow(win);
	}
}

bool MainWindow::goBack() {
	return applyActiveWin(mdiArea, [](auto win) {return win->goBack();});
}

bool MainWindow::goForward() {
	return applyActiveWin(mdiArea, [](auto win) {return win->goForward();});
}

bool MainWindow::goTop() {
	return applyActiveWin(mdiArea, [](auto win) {return win->goTop();});
}

bool MainWindow::goUp() {
	return applyActiveWin(mdiArea, [](auto win) {return win->goUp();});
}

// EOF