#include "runepagelist.h"
#include "ui_runepagelist.h"

#include <QDebug>
#include <QDropEvent>
#include <QMenu>
#include <QMimeData>
#include <QTextStream>

RunePageList::RunePageList(QWidget* parent) : QListWidget(parent), ui(new Ui::RunePageList) {
	ui->setupUi(this);

	QObject::connect(this, &QListWidget::itemChanged, this, &RunePageList::itemChangedCallback);
	QObject::connect(this, &QListWidget::customContextMenuRequested, this, &RunePageList::openContextMenu);
}

RunePageList::~RunePageList() {
	delete this->ui;
}

void RunePageList::loadRunePages(const std::vector<ClientAPI::RunePage>& pages) {
	clearItems();
	for(const ClientAPI::RunePage& rp : pages) {
		addRunepageItem(QString::fromStdString(rp.name), rp.id, rp.runepage, rp.isCurrent);
	}
}

void RunePageList::loadRunePages(const std::vector<std::shared_ptr<Config::RunePageConfig>>& pages) {
	clearItems();
	for(size_t i = 0; i < pages.size(); ++i) {
		std::shared_ptr<Config::RunePageConfig> rp = pages.at(i);
		addRunepageItem(rp->name, i, rp->runepage);
	}
}

void RunePageList::setRuneInfos(const std::vector<RuneAspekt>& runeInfo, const std::vector<RuneStyle>& runeStyles) {
	this->runeInfo = &runeInfo;
	this->runeStyles = &runeStyles;
}

void RunePageList::dropEvent(QDropEvent* event) {
	qDebug() << "drop event";
	if(event->source() == nullptr || event->source() != other) {
		event->ignore();
		return;
	}

	auto selected = other->selectedItems();
	if(selected.size() != 1) {
		event->ignore();
		return;
	}
	QListWidgetItem* item = selected.at(0);
	qDebug() << "data: " << item->data(RoleId);

	// compare rune pages for duplicates?

	// QListWidget::dropEvent(event);

	// save change
	QString name = item->text();
	const RunePage* oldPage = (RunePage*) item->data(RolePointer).toULongLong();

	emit runepageChanged(-1, name, *oldPage);
}

void RunePageList::itemChangedCallback(QListWidgetItem* item) {
	int pageId = item->data(RunePageList::RoleId).toUInt();
	QString newName = item->text();
	const ::RunePage* page = (::RunePage*) item->data(RunePageList::RolePointer).toULongLong();
	emit runepageChanged(pageId, newName, *page);
}

void RunePageList::openContextMenu(const QPoint& pos) {
	QPoint globalPos = mapToGlobal(pos);

	QMenu menu;
	menu.addAction(QIcon::fromTheme("edit-delete"), RunePageList::tr("Delete"), this, &RunePageList::deleteCurrentItem);

	menu.exec(globalPos);
}

void RunePageList::deleteCurrentItem() {
	QListWidgetItem* item = currentItem();
	if (item) {
		uint32_t id = item->data(RoleId).toUInt();
		RunePage* page = (RunePage*) item->data(RolePointer).toULongLong();
		removeItemWidget(item);
		emit runepageDeleted(id);

		delete item;
		delete page;
	}
}

void RunePageList::clearItems() {
	while(count()) {
		QListWidgetItem* item = takeItem(0);
		delete (RunePage*) item->data(RolePointer).toULongLong();
		delete item;
	}

	clear();
}

void RunePageList::addRunepageItem(QString name, int id, const ::RunePage& rp, bool isCurrent) {
	QListWidgetItem* item = new QListWidgetItem(name);
	item->setData(RoleId, (uint) id);
	item->setData(RolePointer, (qulonglong) new ::RunePage(rp));
	QString tooltipStr;
	if(id != -1) {
		tooltipStr = QString("id: %0\n").arg(id);
	}
	tooltipStr += getRuneDescription(rp);
	item->setToolTip(tooltipStr);
	item->setFlags(item->flags() | Qt::ItemIsEditable);
	if(isCurrent) {
		item->setSelected(true);
	}
	addItem(item);
}

QString RunePageList::getRuneDescription(const ::RunePage& runepage) {
	QString outStr;
	outStr.reserve(100);
	QTextStream out(&outStr);

	if(! (bool) runepage) {
		return {};
	}

	out << getRuneStyleByID(runepage.primaryStyle) << ' ' << RunePageList::tr("with") << ' ' << getRuneStyleByID(runepage.secondaryStyle);

	for(uint32_t rune : runepage.selectedAspects) {
		out << '\n' << getRuneText(rune);
	}
	return outStr;
}

QString RunePageList::getRuneText(uint32_t id) {
	if(runeInfo != nullptr) {
		for(const RuneAspekt& ra : *runeInfo) {
			if(ra.id == id) {
				return QString::fromStdString(ra.name);
			}
		}
	}

	return QString("(%0)").arg(id);
}

QString RunePageList::getRuneStyleByID(uint32_t id) {
	if(runeStyles != nullptr) {
		auto it = std::find_if(runeStyles->begin(), runeStyles->end(), [id](const RuneStyle& rs) { return rs.id == id; });

		if(it != runeStyles->end()) {
			return QString::fromStdString(it->name);
		}
	}

	return QString("(%0)").arg(id);
}