/*
 * Strawberry Music Player
 * This file was part of Clementine.
 * Copyright 2010, David Sansome <me@davidsansome.com>
 *
 * Strawberry is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Strawberry is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef ALBUMCOVERSEARCHER_H
#define ALBUMCOVERSEARCHER_H

#include "config.h"

#include <QtGlobal>
#include <QObject>
#include <QWidget>
#include <QDialog>
#include <QStandardItem>
#include <QStandardItemModel>
#include <QMap>
#include <QString>
#include <QImage>
#include <QIcon>
#include <QPainter>
#include <QStyleOption>
#include <QStyledItemDelegate>
#include <QStyleOptionViewItem>
#include <QtEvents>

#include "albumcoverfetcher.h"
#include "albumcoverloaderoptions.h"

class QModelIndex;

class Application;
class Ui_AlbumCoverSearcher;

class SizeOverlayDelegate : public QStyledItemDelegate {
public:
  static const int kMargin;
  static const int kPaddingX;
  static const int kPaddingY;
  static const qreal kBorder;
  static const qreal kFontPointSize;
  static const int kBorderAlpha;
  static const int kBackgroundAlpha;

  SizeOverlayDelegate(QObject *parent = nullptr);

  void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
};

// This is a dialog that lets the user search for album covers
class AlbumCoverSearcher : public QDialog {
  Q_OBJECT

public:
  AlbumCoverSearcher(const QIcon &no_cover_icon, Application *app, QWidget *parent);
  ~AlbumCoverSearcher();

  enum Role {
    Role_ImageURL = Qt::UserRole + 1,
    Role_ImageRequestId,
    Role_ImageFetchFinished,
    Role_ImageDimensions,  // width * height
    Role_ImageSize,
  };

  void Init(AlbumCoverFetcher *fetcher);

  QImage Exec(const QString &artist, const QString &album);

protected:
  void keyPressEvent(QKeyEvent *);

private slots:
  void Search();
  void SearchFinished(const quint64 id, const CoverSearchResults &results);
  void ImageLoaded(const quint64 id, const QUrl &cover_url, const QImage &image);

  void CoverDoubleClicked(const QModelIndex &index);

private:
  Ui_AlbumCoverSearcher *ui_;

  Application *app_;
  QStandardItemModel *model_;

  QIcon no_cover_icon_;
  AlbumCoverLoaderOptions options_;
  AlbumCoverFetcher *fetcher_;

  quint64 id_;
  QMap<quint64, QStandardItem*> cover_loading_tasks_;
};

#endif  // ALBUMCOVERSEARCHER_H