#include "pasteitem.h"

#include <QClipboard>
#include <QApplication>
#include <QVBoxLayout>
#include <QMimeData>
#include <QUrl>
#include <QDebug>

PasteItem::PasteItem(QWidget *parent, QListWidgetItem *item) : QWidget(parent),
	m_frame(new QWidget(this)),
	m_frame_effect(new QGraphicsDropShadowEffect(this)),
	m_barnner(new Barnner(this->m_frame)),
	m_context(new StackedWidget(this->m_frame)),
	m_listwidget_item(item)
{
	this->setFocusPolicy(Qt::StrongFocus);
	this->setAttribute(Qt::WA_TranslucentBackground);

	m_frame_effect->setOffset(0, 0);
	m_frame_effect->setColor(QColor(0, 0, 0, 180));
	m_frame_effect->setBlurRadius(8);
	m_frame->setGraphicsEffect(m_frame_effect);
	m_frame->setObjectName("PasteItemFrame");

	QVBoxLayout *vboxlayout = new QVBoxLayout();
	vboxlayout->addWidget(m_barnner);
	vboxlayout->addWidget(m_context);
	vboxlayout->setSpacing(0);
	vboxlayout->setContentsMargins(5, 5, 5, 5);

	m_frame->setLayout(vboxlayout);
	m_frame->show();
}

void PasteItem::setImage(QImage &image)
{
	QPixmap pixmap = QPixmap::fromImage(image);
	m_context->setPixmap(pixmap);
	this->m_barnner->setTitle(QObject::tr("Image"));
}

void PasteItem::setPlainText(QString s)
{
	m_context->setText(s);
	m_text = s;

	if (s.startsWith("http://") || s.startsWith("ftp://") || s.startsWith("https://"))
		this->m_barnner->setTitle(QObject::tr("Link"));
	else if (QColor::isValidColor(s))
		this->m_barnner->setTitle(QObject::tr("Color"));
	else
		this->m_barnner->setTitle(QObject::tr("PlainText"));
}

void PasteItem::setRichText(QString richText, QString plainText)
{
	m_context->setRichText(richText, plainText);
	m_text = plainText;

	if (plainText.startsWith("http://") || plainText.startsWith("ftp://") || plainText.startsWith("https://"))
		this->m_barnner->setTitle(QObject::tr("Link"));
	else if (QColor::isValidColor(plainText.simplified().trimmed()))
		this->m_barnner->setTitle(QObject::tr("Color"));
	else
		this->m_barnner->setTitle(QObject::tr("RichText"));
}

bool PasteItem::setUrls(QList<QUrl> &urls)
{
	for (auto &url : urls) {
		m_text += url.toString();
	}
	if (!m_context->setUrls(urls))
		return false;

	this->m_barnner->setTitle(QString("%1 ").arg(urls.count()) + QObject::tr("Files"));
	return true;
}

void PasteItem::setIcon(QPixmap pixmap)
{
	m_barnner->setIcon(pixmap);
}

void PasteItem::setTime(QDateTime &dateTime)
{
	m_barnner->setTime(dateTime);
}

void PasteItem::resizeEvent(QResizeEvent *event)
{
	QSize size = event->size();
	m_frame->resize(size);
	m_barnner->setFixedHeight(size.height()/5);

	QWidget::resizeEvent(event);
}

void PasteItem::mouseDoubleClickEvent(QMouseEvent *event)
{
	this->copyData();

	QWidget::mouseDoubleClickEvent(event);
}

void PasteItem::keyPressEvent(QKeyEvent *event)
{
	switch (event->key()) {
	case Qt::Key_Return:
	case Qt::Key_Enter:
		this->copyData();
		return;
	case Qt::Key_Escape:
		emit this->hideWindow();
		return;
	}

	QWidget::keyPressEvent(event);
}

#ifdef Q_OS_LINUX
#include <X11/Xlib.h>
#include <X11/Intrinsic.h>
#include <X11/extensions/XTest.h>

#include <QTimer>
#include <QThread>

static void SendKey(Display * disp, KeySym keysym, KeySym modsym)
{
	KeyCode keycode = 0, modcode = 0;
	keycode = XKeysymToKeycode (disp, keysym);
	if (keycode == 0)
		return;

	XTestGrabControl (disp, True);
	/* Generate modkey press */
	if (modsym != 0) {
		modcode = XKeysymToKeycode(disp, modsym);
		XTestFakeKeyEvent (disp, modcode, True, 0);
	}
	/* Generate regular key press and release */
	XTestFakeKeyEvent (disp, keycode, True, 0);
	XTestFakeKeyEvent (disp, keycode, False, 0);

	/* Generate modkey release */
	if (modsym != 0)
		XTestFakeKeyEvent (disp, modcode, False, 0);

	XSync (disp, False);
	XTestGrabControl (disp, False);
}
#endif

void PasteItem::copyData(void)
{
	emit this->hideWindow();

	QClipboard *clipboard = QApplication::clipboard();
	ItemData *itemData = (ItemData *)this->m_listwidget_item->data(Qt::UserRole).value<unsigned long>();

	clipboard->setMimeData(dup_mimedata(itemData->mimeData), QClipboard::Clipboard);

#ifdef Q_OS_LINUX
	clipboard->setMimeData(dup_mimedata(itemData->mimeData), QClipboard::Selection);
#endif
	if (itemData->mimeData->hasUrls())
		return;

#ifdef Q_OS_LINUX
	/* Send keypress event 'Ctrl +v' for direct paste */
	QTimer::singleShot(1000, [](void) {
		Display *disp = XOpenDisplay(nullptr);
		SendKey(disp, XK_Insert, XK_Shift_L);
		XCloseDisplay(disp);
	});
#endif
}