#include "gui/widgets/poster.h"
#include "core/anime_db.h"
#include "core/http.h"
#include "core/session.h"
#include "core/strings.h"
#include "gui/widgets/clickable_label.h"

#include <QByteArray>
#include <QDebug>
#include <QDesktopServices>
#include <QFrame>
#include <QHBoxLayout>
#include <QLabel>
#include <QMessageBox>
#include <QPixmap>
#include <QThread>
#include <QUrl>

Poster::Poster(QWidget* parent) : QFrame(parent) {
	QHBoxLayout* layout = new QHBoxLayout(this);
	layout->setContentsMargins(1, 1, 1, 1);

	setCursor(Qt::PointingHandCursor);
	setFixedSize(150, 225);
	setFrameShape(QFrame::Box);
	setFrameShadow(QFrame::Plain);

	label_.setAlignment(Qt::AlignCenter);
	layout->addWidget(&label_);
}

Poster::Poster(const Anime::Anime& anime, QWidget* parent) : Poster(parent) {
	SetAnime(anime);
}

void Poster::SetAnime(const Anime::Anime& anime) {
	/* todo: only download on showEvent() */
	{
		HTTP::GetThread* thread = new HTTP::GetThread(anime.GetPosterUrl(), {}, this);

		connect(thread, &HTTP::GetThread::ReceivedData, this, &Poster::ImageDownloadFinished);
		connect(thread, &HTTP::GetThread::finished, thread, &HTTP::GetThread::deleteLater);

		thread->start();
	}

	std::optional<std::string> url = anime.GetServiceUrl(session.config.service);
	if (url)
		service_url_ = Strings::ToQString(url.value());

	if (clickable_) {
		label_.disconnect();
		connect(&label_, &ClickableLabel::clicked, this, [this] { QDesktopServices::openUrl(service_url_); });
	}
}

void Poster::SetClickable(bool enabled) {
	clickable_ = enabled;

	if (clickable_ && !service_url_.isEmpty()) {
		setCursor(Qt::PointingHandCursor);
		label_.disconnect();
		connect(&label_, &ClickableLabel::clicked, this, [this] { QDesktopServices::openUrl(service_url_); });
	} else {
		setCursor(Qt::ArrowCursor);
		label_.disconnect();
	}
}

void Poster::ImageDownloadFinished(const QByteArray& arr) {
	img_.loadFromData(arr);
	RenderToLabel();
}

void Poster::RenderToLabel() {
	const QPixmap pixmap = QPixmap::fromImage(img_);
	if (pixmap.isNull())
		return;
	label_.setPixmap(pixmap.scaled(label_.size(), Qt::KeepAspectRatioByExpanding, Qt::SmoothTransformation));
}

void Poster::resizeEvent(QResizeEvent*) {
	RenderToLabel();
}