#include "detailview.h"

#include "../../quick/embyimageprovider.h"
#include "../../quick/quickpagehost.h"
#include "../../utils/mediaitemutils.h"
#include "../../utils/playerpreferenceutils.h"
#include "detailviewmodel.h"

#include <config/config_keys.h>
#include <config/configstore.h>
#include <models/media/playerlaunchcontext.h>
#include <qembycore.h>
#include <services/media/mediaservice.h>

#include <QCursor>
#include <QMetaObject>
#include <QPointer>
#include <QQuickItem>
#include <QQuickWidget>
#include <QVBoxLayout>

#include <qcorotask.h>

DetailView::DetailView(QEmbyCore *core, QWidget *parent)
    : BaseView(core, parent) {
  setObjectName(QStringLiteral("detail-view"));
  setAttribute(Qt::WA_StyledBackground, true);

  auto *layout = new QVBoxLayout(this);
  layout->setContentsMargins(0, 0, 0, 0);
  layout->setSpacing(0);

  m_quickHost = new QuickPageHost(this);
  m_viewModel = new DetailViewModel(core, m_quickHost);
  m_quickHost->setContextProperty(QStringLiteral("detailPage"), m_viewModel);
  m_quickHost->addImageProvider(QStringLiteral("emby"),
                                new EmbyImageProvider(core));
  m_quickHost->addImageProvider(QStringLiteral("adaptiveicon"),
                                new AdaptiveIconProvider());
  m_quickHost->load(
      QUrl(QStringLiteral("qrc:/qt/qml/qEmby/qml/DetailPage.qml")));
  layout->addWidget(m_quickHost);

  connect(m_quickHost, &QuickPageHost::pageShown, m_viewModel,
          [this]() { m_viewModel->setActive(true); });
  connect(m_quickHost, &QuickPageHost::pageHidden, m_viewModel,
          [this]() { m_viewModel->setActive(false); });

  connect(m_viewModel, &DetailViewModel::itemActivated, this,
          [this](const MediaItem &item) {
            if (item.type == QLatin1String("Season")) {
              const QString seriesId = item.seriesId.isEmpty()
                                           ? m_viewModel->item().id
                                           : item.seriesId;
              emit navigateToSeason(seriesId, item.id, item.name);
            } else if (item.type == QLatin1String("BoxSet") ||
                       item.type == QLatin1String("Playlist") ||
                       item.type == QLatin1String("Folder")) {
              emit navigateToFolder(item.id, item.name);
            } else if (item.type == QLatin1String("Person")) {
              emit navigateToPerson(item.id, item.name);
            } else {
              emit navigateToDetail(item.id, item.name, item);
            }
          });
  connect(m_viewModel, &DetailViewModel::genreActivated, this,
          [this](const QString &genre) {
            emit navigateToFilteredView(QStringLiteral("Genre"), genre);
          });
  connect(m_viewModel, &DetailViewModel::playRequested, this,
          [this](const MediaItem &item, int sourceIndex, bool resume) {
            playSelected(item, sourceIndex, resume);
          });
  connect(m_viewModel, &DetailViewModel::favoriteRequested, this,
          &BaseView::handleFavoriteRequested);
  connect(m_viewModel, &DetailViewModel::playedRequested, this,
          [this](const MediaItem &item, bool played) {
            if (played)
              handleMarkPlayedRequested(item);
            else
              handleMarkUnplayedRequested(item);
          });
  connect(m_viewModel, &DetailViewModel::moreRequested, this,
          [this](const MediaItem &item) {
            handleMoreMenuRequested(item, QCursor::pos());
          });
}

QCoro::Task<void> DetailView::loadItem(const QString &itemId,
                                       const MediaItem &seedItem) {
  co_await m_viewModel->loadItem(itemId, seedItem);
}

void DetailView::prepareForStackLeave() { m_viewModel->setActive(false); }

void DetailView::scrollToTop() {
  if (QQuickItem *root = m_quickHost->quickWidget()->rootObject())
    QMetaObject::invokeMethod(root, "scrollToTop");
}

void DetailView::onMediaItemUpdated(const MediaItem &item) {
  m_viewModel->updateItem(item);
}

void DetailView::beginOptimisticPlayedUpdate() {
  m_viewModel->setActionBusy(true);
}

void DetailView::endOptimisticPlayedUpdate() {
  m_viewModel->setActionBusy(false);
}

QCoro::Task<void> DetailView::playSelected(MediaItem item, int sourceIndex,
                                           bool resume) {
  if (!m_core || !m_core->mediaService() || item.id.isEmpty())
    co_return;

  QPointer<DetailView> guard(this);
  try {
    if (item.mediaSources.isEmpty()) {
      const PlaybackInfo info =
          co_await m_core->mediaService()->getPlaybackInfo(item.id);
      if (!guard)
        co_return;
      item.mediaSources = info.mediaSources;
    }

    QVariant launchData;
    QString sourceId = item.id;
    QString streamUrl;
    if (!item.mediaSources.isEmpty()) {
      sourceIndex = qBound(0, sourceIndex, item.mediaSources.size() - 1);
      MediaSourceInfo selected = item.mediaSources.at(sourceIndex);
      PlayerPreferenceUtils::applyPreferredStreamRules(
          selected,
          ConfigStore::instance()->get<QString>(ConfigKeys::PlayerAudioLang,
                                                 "auto"),
          ConfigStore::instance()->get<QString>(ConfigKeys::PlayerSubLang,
                                                 "auto"));
      sourceId = selected.id;
      PlayerLaunchContext context;
      context.mediaItem = item;
      context.selectedSource = selected;
      launchData = QVariant::fromValue(context);
      streamUrl = m_core->mediaService()->getStreamUrl(item.id, selected);
    } else {
      streamUrl = m_core->mediaService()->getStreamUrl(item.id, sourceId);
    }

    if (!guard)
      co_return;
    const long long startTicks =
        resume ? item.userData.playbackPositionTicks : 0;
    emit navigateToPlayer(item.id, MediaItemUtils::playbackTitle(item),
                          streamUrl, startTicks, launchData);
  } catch (...) {
    if (guard)
      m_viewModel->setTransientError(tr("Unable to prepare playback"));
  }
}