package org.schabi.newpipe.player.ui;

import static com.google.android.exoplayer2.Player.REPEAT_MODE_ALL;
import static com.google.android.exoplayer2.Player.REPEAT_MODE_ONE;
import static org.schabi.newpipe.MainActivity.DEBUG;
import static org.schabi.newpipe.ktx.ViewUtils.animate;
import static org.schabi.newpipe.ktx.ViewUtils.animateRotation;
import static org.schabi.newpipe.player.Player.RENDERER_UNAVAILABLE;
import static org.schabi.newpipe.player.Player.STATE_BUFFERING;
import static org.schabi.newpipe.player.Player.STATE_COMPLETED;
import static org.schabi.newpipe.player.Player.STATE_PAUSED;
import static org.schabi.newpipe.player.Player.STATE_PAUSED_SEEK;
import static org.schabi.newpipe.player.Player.STATE_PLAYING;
import static org.schabi.newpipe.player.helper.PlayerHelper.formatSpeed;
import static org.schabi.newpipe.player.helper.PlayerHelper.getTimeString;
import static org.schabi.newpipe.player.helper.PlayerHelper.nextResizeModeAndSaveToPrefs;
import static org.schabi.newpipe.player.helper.PlayerHelper.retrieveSeekDurationFromPreferences;

import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffColorFilter;
import android.net.Uri;
import android.os.Build;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
import android.view.GestureDetector;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.SeekBar;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.content.res.AppCompatResources;
import androidx.appcompat.view.ContextThemeWrapper;
import androidx.appcompat.widget.PopupMenu;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.ExoPlayer;
import com.google.android.exoplayer2.Format;
import com.google.android.exoplayer2.PlaybackParameters;
import com.google.android.exoplayer2.Player.RepeatMode;
import com.google.android.exoplayer2.Tracks;
import com.google.android.exoplayer2.text.Cue;
import com.google.android.exoplayer2.ui.AspectRatioFrameLayout;
import com.google.android.exoplayer2.ui.CaptionStyleCompat;
import com.google.android.exoplayer2.video.VideoSize;

import org.schabi.newpipe.App;
import org.schabi.newpipe.R;
import org.schabi.newpipe.databinding.PlayerBinding;
import org.schabi.newpipe.extractor.MediaFormat;
import org.schabi.newpipe.extractor.stream.StreamInfo;
import org.schabi.newpipe.extractor.stream.VideoStream;
import org.schabi.newpipe.fragments.detail.VideoDetailFragment;
import org.schabi.newpipe.ktx.AnimationType;
import org.schabi.newpipe.player.Player;
import org.schabi.newpipe.player.gesture.BasePlayerGestureListener;
import org.schabi.newpipe.player.gesture.DisplayPortion;
import org.schabi.newpipe.player.helper.PlayerHelper;
import org.schabi.newpipe.player.mediaitem.MediaItemTag;
import org.schabi.newpipe.player.playback.SurfaceHolderCallback;
import org.schabi.newpipe.player.playqueue.PlayQueue;
import org.schabi.newpipe.player.playqueue.PlayQueueItem;
import org.schabi.newpipe.player.seekbarpreview.SeekbarPreviewThumbnailHelper;
import org.schabi.newpipe.player.seekbarpreview.SeekbarPreviewThumbnailHolder;
import org.schabi.newpipe.util.DeviceUtils;
import org.schabi.newpipe.util.NavigationHelper;
import org.schabi.newpipe.util.external_communication.KoreUtils;
import org.schabi.newpipe.util.external_communication.ShareUtils;
import org.schabi.newpipe.views.player.PlayerFastSeekOverlay;

import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

public abstract class VideoPlayerUi extends PlayerUi
        implements SeekBar.OnSeekBarChangeListener, View.OnClickListener, View.OnLongClickListener,
        PopupMenu.OnMenuItemClickListener, PopupMenu.OnDismissListener {
    private static final String TAG = VideoPlayerUi.class.getSimpleName();

    // time constants
    public static final long DEFAULT_CONTROLS_DURATION = 300; // 300 millis
    public static final long DEFAULT_CONTROLS_HIDE_TIME = 2000;  // 2 Seconds
    public static final long DPAD_CONTROLS_HIDE_TIME = 7000;  // 7 Seconds
    public static final int SEEK_OVERLAY_DURATION = 450; // 450 millis

    // other constants (TODO remove playback speeds and use normal menu for popup, too)
    private static final float[] PLAYBACK_SPEEDS = {0.5f, 0.75f, 1.0f, 1.25f, 1.5f, 1.75f, 2.0f};


    /*//////////////////////////////////////////////////////////////////////////
    // Views
    //////////////////////////////////////////////////////////////////////////*/

    protected PlayerBinding binding;
    private final Handler controlsVisibilityHandler = new Handler(Looper.getMainLooper());
    @Nullable private SurfaceHolderCallback surfaceHolderCallback;
    boolean surfaceIsSetup = false;
    @Nullable private Bitmap thumbnail = null;


    /*//////////////////////////////////////////////////////////////////////////
    // Popup menus ("popup" means that they pop up, not that they belong to the popup player)
    //////////////////////////////////////////////////////////////////////////*/

    private static final int POPUP_MENU_ID_QUALITY = 69;
    private static final int POPUP_MENU_ID_PLAYBACK_SPEED = 79;
    private static final int POPUP_MENU_ID_CAPTION = 89;

    protected boolean isSomePopupMenuVisible = false;
    private PopupMenu qualityPopupMenu;
    protected PopupMenu playbackSpeedPopupMenu;
    private PopupMenu captionPopupMenu;


    /*//////////////////////////////////////////////////////////////////////////
    // Gestures
    //////////////////////////////////////////////////////////////////////////*/

    private GestureDetector gestureDetector;
    private BasePlayerGestureListener playerGestureListener;
    @Nullable private View.OnLayoutChangeListener onLayoutChangeListener = null;

    @NonNull private final SeekbarPreviewThumbnailHolder seekbarPreviewThumbnailHolder =
            new SeekbarPreviewThumbnailHolder();


    /*//////////////////////////////////////////////////////////////////////////
    // Constructor, setup, destroy
    //////////////////////////////////////////////////////////////////////////*/
    //region Constructor, setup, destroy

    protected VideoPlayerUi(@NonNull final Player player,
                         @NonNull final PlayerBinding playerBinding) {
        super(player);
        binding = playerBinding;
        setupFromView();
    }

    public void setupFromView() {
        initViews();
        initListeners();
        setupPlayerSeekOverlay();
    }

    private void initViews() {
        setupSubtitleView();

        binding.resizeTextView
                .setText(PlayerHelper.resizeTypeOf(context, binding.surfaceView.getResizeMode()));

        binding.playbackSeekBar.getThumb()
                .setColorFilter(new PorterDuffColorFilter(Color.RED, PorterDuff.Mode.SRC_IN));
        binding.playbackSeekBar.getProgressDrawable()
                .setColorFilter(new PorterDuffColorFilter(Color.RED, PorterDuff.Mode.MULTIPLY));

        final ContextThemeWrapper themeWrapper = new ContextThemeWrapper(context,
                R.style.DarkPopupMenu);

        qualityPopupMenu = new PopupMenu(themeWrapper, binding.qualityTextView);
        playbackSpeedPopupMenu = new PopupMenu(context, binding.playbackSpeed);
        captionPopupMenu = new PopupMenu(themeWrapper, binding.captionTextView);

        binding.progressBarLoadingPanel.getIndeterminateDrawable()
                .setColorFilter(new PorterDuffColorFilter(Color.WHITE, PorterDuff.Mode.MULTIPLY));

        binding.titleTextView.setSelected(true);
        binding.channelTextView.setSelected(true);

        // Prevent hiding of bottom sheet via swipe inside queue
        binding.itemsList.setNestedScrollingEnabled(false);
    }

    abstract BasePlayerGestureListener buildGestureListener();

    protected void initListeners() {
        binding.qualityTextView.setOnClickListener(this);
        binding.playbackSpeed.setOnClickListener(this);

        binding.playbackSeekBar.setOnSeekBarChangeListener(this);
        binding.captionTextView.setOnClickListener(this);
        binding.resizeTextView.setOnClickListener(this);
        binding.playbackLiveSync.setOnClickListener(this);

        playerGestureListener = buildGestureListener();
        gestureDetector = new GestureDetector(context, playerGestureListener);
        binding.getRoot().setOnTouchListener(playerGestureListener);

        binding.repeatButton.setOnClickListener(v -> onRepeatClicked());
        binding.shuffleButton.setOnClickListener(v -> onShuffleClicked());

        binding.playPauseButton.setOnClickListener(this);
        binding.playPreviousButton.setOnClickListener(this);
        binding.playNextButton.setOnClickListener(this);

        binding.moreOptionsButton.setOnClickListener(this);
        binding.moreOptionsButton.setOnLongClickListener(this);
        binding.share.setOnClickListener(this);
        binding.share.setOnLongClickListener(this);
        binding.fullScreenButton.setOnClickListener(this);
        binding.screenRotationButton.setOnClickListener(this);
        binding.playWithKodi.setOnClickListener(this);
        binding.openInBrowser.setOnClickListener(this);
        binding.playerCloseButton.setOnClickListener(this);
        binding.switchMute.setOnClickListener(this);

        ViewCompat.setOnApplyWindowInsetsListener(binding.itemsListPanel, (view, windowInsets) -> {
            final Insets cutout = windowInsets.getInsets(WindowInsetsCompat.Type.displayCutout());
            if (!cutout.equals(Insets.NONE)) {
                view.setPadding(cutout.left, cutout.top, cutout.right, cutout.bottom);
            }
            return windowInsets;
        });

        // PlaybackControlRoot already consumed window insets but we should pass them to
        // player_overlays and fast_seek_overlay too. Without it they will be off-centered.
        onLayoutChangeListener
                = (v, left, top, right, bottom, oldLeft, oldTop, oldRight, oldBottom) -> {
                    binding.playerOverlays.setPadding(
                            v.getPaddingLeft(),
                            v.getPaddingTop(),
                            v.getPaddingRight(),
                            v.getPaddingBottom());

                    // If we added padding to the fast seek overlay, too, it would not go under the
                    // system ui. Instead we apply negative margins equal to the window insets of
                    // the opposite side, so that the view covers all of the player (overflowing on
                    // some sides) and its center coincides with the center of other controls.
                    final RelativeLayout.LayoutParams fastSeekParams = (RelativeLayout.LayoutParams)
                            binding.fastSeekOverlay.getLayoutParams();
                    fastSeekParams.leftMargin = -v.getPaddingRight();
                    fastSeekParams.topMargin = -v.getPaddingBottom();
                    fastSeekParams.rightMargin = -v.getPaddingLeft();
                    fastSeekParams.bottomMargin = -v.getPaddingTop();
                };
        binding.playbackControlRoot.addOnLayoutChangeListener(onLayoutChangeListener);
    }

    protected void deinitListeners() {
        binding.qualityTextView.setOnClickListener(null);
        binding.playbackSpeed.setOnClickListener(null);
        binding.playbackSeekBar.setOnSeekBarChangeListener(null);
        binding.captionTextView.setOnClickListener(null);
        binding.resizeTextView.setOnClickListener(null);
        binding.playbackLiveSync.setOnClickListener(null);

        binding.getRoot().setOnTouchListener(null);
        playerGestureListener = null;
        gestureDetector = null;

        binding.repeatButton.setOnClickListener(null);
        binding.shuffleButton.setOnClickListener(null);

        binding.playPauseButton.setOnClickListener(null);
        binding.playPreviousButton.setOnClickListener(null);
        binding.playNextButton.setOnClickListener(null);

        binding.moreOptionsButton.setOnClickListener(null);
        binding.moreOptionsButton.setOnLongClickListener(null);
        binding.share.setOnClickListener(null);
        binding.share.setOnLongClickListener(null);
        binding.fullScreenButton.setOnClickListener(null);
        binding.screenRotationButton.setOnClickListener(null);
        binding.playWithKodi.setOnClickListener(null);
        binding.openInBrowser.setOnClickListener(null);
        binding.playerCloseButton.setOnClickListener(null);
        binding.switchMute.setOnClickListener(null);

        ViewCompat.setOnApplyWindowInsetsListener(binding.itemsListPanel, null);

        binding.playbackControlRoot.removeOnLayoutChangeListener(onLayoutChangeListener);
    }

    /**
     * Initializes the Fast-For/Backward overlay.
     */
    private void setupPlayerSeekOverlay() {
        binding.fastSeekOverlay
                .seekSecondsSupplier(() -> retrieveSeekDurationFromPreferences(player) / 1000)
                .performListener(new PlayerFastSeekOverlay.PerformListener() {

                    @Override
                    public void onDoubleTap() {
                        animate(binding.fastSeekOverlay, true, SEEK_OVERLAY_DURATION);
                    }

                    @Override
                    public void onDoubleTapEnd() {
                        animate(binding.fastSeekOverlay, false, SEEK_OVERLAY_DURATION);
                    }

                    @NonNull
                    @Override
                    public FastSeekDirection getFastSeekDirection(
                            @NonNull final DisplayPortion portion
                    ) {
                        if (player.exoPlayerIsNull()) {
                            // Abort seeking
                            playerGestureListener.endMultiDoubleTap();
                            return FastSeekDirection.NONE;
                        }
                        if (portion == DisplayPortion.LEFT) {
                            // Check if it's possible to rewind
                            // Small puffer to eliminate infinite rewind seeking
                            if (player.getExoPlayer().getCurrentPosition() < 500L) {
                                return FastSeekDirection.NONE;
                            }
                            return FastSeekDirection.BACKWARD;
                        } else if (portion == DisplayPortion.RIGHT) {
                            // Check if it's possible to fast-forward
                            if (player.getCurrentState() == STATE_COMPLETED
                                    || player.getExoPlayer().getCurrentPosition()
                                    >= player.getExoPlayer().getDuration()) {
                                return FastSeekDirection.NONE;
                            }
                            return FastSeekDirection.FORWARD;
                        }
                        /* portion == DisplayPortion.MIDDLE */
                        return FastSeekDirection.NONE;
                    }

                    @Override
                    public void seek(final boolean forward) {
                        playerGestureListener.keepInDoubleTapMode();
                        if (forward) {
                            player.fastForward();
                        } else {
                            player.fastRewind();
                        }
                    }
                });
        playerGestureListener.doubleTapControls(binding.fastSeekOverlay);
    }

    public void deinitPlayerSeekOverlay() {
        binding.fastSeekOverlay
                .seekSecondsSupplier(null)
                .performListener(null);
    }

    @Override
    public void setupAfterIntent() {
        super.setupAfterIntent();
        setupElementsVisibility();
        setupElementsSize(context.getResources());
        binding.getRoot().setVisibility(View.VISIBLE);
        binding.playPauseButton.requestFocus();
    }

    @Override
    public void initPlayer() {
        super.initPlayer();
        setupVideoSurfaceIfNeeded();
    }

    @Override
    public void initPlayback() {
        super.initPlayback();

        // #6825 - Ensure that the shuffle-button is in the correct state on the UI
        setShuffleButton(player.getExoPlayer().getShuffleModeEnabled());
    }

    public abstract void removeViewFromParent();

    @Override
    public void destroyPlayer() {
        super.destroyPlayer();
        clearVideoSurface();
    }

    @Override
    public void destroy() {
        super.destroy();
        if (binding != null) {
            binding.endScreen.setImageBitmap(null);
        }
        deinitPlayerSeekOverlay();
        deinitListeners();
    }

    protected void setupElementsVisibility() {
        setMuteButton(player.isMuted());
        animateRotation(binding.moreOptionsButton, DEFAULT_CONTROLS_DURATION, 0);
    }

    protected abstract void setupElementsSize(Resources resources);

    protected void setupElementsSize(final int buttonsMinWidth,
                                     final int playerTopPad,
                                     final int controlsPad,
                                     final int buttonsPad) {
        binding.topControls.setPaddingRelative(controlsPad, playerTopPad, controlsPad, 0);
        binding.bottomControls.setPaddingRelative(controlsPad, 0, controlsPad, 0);
        binding.qualityTextView.setPadding(buttonsPad, buttonsPad, buttonsPad, buttonsPad);
        binding.playbackSpeed.setPadding(buttonsPad, buttonsPad, buttonsPad, buttonsPad);
        binding.playbackSpeed.setMinimumWidth(buttonsMinWidth);
        binding.captionTextView.setPadding(buttonsPad, buttonsPad, buttonsPad, buttonsPad);
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Broadcast receiver
    //////////////////////////////////////////////////////////////////////////*/
    //region Broadcast receiver

    @Override
    public void onBroadcastReceived(final Intent intent) {
        super.onBroadcastReceived(intent);
        if (Intent.ACTION_CONFIGURATION_CHANGED.equals(intent.getAction())) {
            // When the orientation changed, the screen height might be smaller.
            // If the end screen thumbnail is not re-scaled,
            // it can be larger than the current screen height
            // and thus enlarging the whole player.
            // This causes the seekbar to be ouf the visible area.
            updateEndScreenThumbnail();
        }
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Thumbnail
    //////////////////////////////////////////////////////////////////////////*/
    //region Thumbnail

    /**
     * Scale the player audio / end screen thumbnail down if necessary.
     * <p>
     * This is necessary when the thumbnail's height is larger than the device's height
     * and thus is enlarging the player's height
     * causing the bottom playback controls to be out of the visible screen.
     * </p>
     */
    @Override
    public void onThumbnailLoaded(@Nullable final Bitmap bitmap) {
        super.onThumbnailLoaded(bitmap);
        thumbnail = bitmap;
        updateEndScreenThumbnail();
    }

    private void updateEndScreenThumbnail() {
        if (thumbnail == null) {
            // remove end screen thumbnail
            binding.endScreen.setImageDrawable(null);
            return;
        }

        final float endScreenHeight = calculateMaxEndScreenThumbnailHeight(thumbnail);
        final Bitmap endScreenBitmap = Bitmap.createScaledBitmap(
                thumbnail,
                (int) (thumbnail.getWidth() / (thumbnail.getHeight() / endScreenHeight)),
                (int) endScreenHeight,
                true);

        if (DEBUG) {
            Log.d(TAG, "Thumbnail - onThumbnailLoaded() called with: "
                    + "currentThumbnail = [" + thumbnail + "], "
                    + thumbnail.getWidth() + "x" + thumbnail.getHeight()
                    + ", scaled end screen height = " + endScreenHeight
                    + ", scaled end screen width = " + endScreenBitmap.getWidth());
        }

        binding.endScreen.setImageBitmap(endScreenBitmap);
    }

    protected abstract float calculateMaxEndScreenThumbnailHeight(@NonNull Bitmap bitmap);
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Progress loop and updates
    //////////////////////////////////////////////////////////////////////////*/
    //region Progress loop and updates

    @Override
    public void onUpdateProgress(final int currentProgress,
                                 final int duration,
                                 final int bufferPercent) {

        if (duration != binding.playbackSeekBar.getMax()) {
            setVideoDurationToControls(duration);
        }
        if (player.getCurrentState() != STATE_PAUSED) {
            updatePlayBackElementsCurrentDuration(currentProgress);
        }
        if (player.isLoading() || bufferPercent > 90) {
            binding.playbackSeekBar.setSecondaryProgress(
                    (int) (binding.playbackSeekBar.getMax() * ((float) bufferPercent / 100)));
        }
        if (DEBUG && bufferPercent % 20 == 0) { //Limit log
            Log.d(TAG, "notifyProgressUpdateToListeners() called with: "
                    + "isVisible = " + isControlsVisible() + ", "
                    + "currentProgress = [" + currentProgress + "], "
                    + "duration = [" + duration + "], bufferPercent = [" + bufferPercent + "]");
        }
        binding.playbackLiveSync.setClickable(!player.isLiveEdge());
    }

    /**
     * Sets the current duration into the corresponding elements.
     * @param currentProgress the current progress, in milliseconds
     */
    private void updatePlayBackElementsCurrentDuration(final int currentProgress) {
        // Don't set seekbar progress while user is seeking
        if (player.getCurrentState() != STATE_PAUSED_SEEK) {
            binding.playbackSeekBar.setProgress(currentProgress);
        }
        binding.playbackCurrentTime.setText(getTimeString(currentProgress));
    }

    /**
     * Sets the video duration time into all control components (e.g. seekbar).
     * @param duration the video duration, in milliseconds
     */
    private void setVideoDurationToControls(final int duration) {
        binding.playbackEndTime.setText(getTimeString(duration));

        binding.playbackSeekBar.setMax(duration);
        // This is important for Android TVs otherwise it would apply the default from
        // setMax/Min methods which is (max - min) / 20
        binding.playbackSeekBar.setKeyProgressIncrement(
                PlayerHelper.retrieveSeekDurationFromPreferences(player));
    }

    @Override // seekbar listener
    public void onProgressChanged(final SeekBar seekBar, final int progress,
                                  final boolean fromUser) {
        // Currently we don't need method execution when fromUser is false
        if (!fromUser) {
            return;
        }
        if (DEBUG) {
            Log.d(TAG, "onProgressChanged() called with: "
                    + "seekBar = [" + seekBar + "], progress = [" + progress + "]");
        }

        binding.currentDisplaySeek.setText(getTimeString(progress));

        // Seekbar Preview Thumbnail
        SeekbarPreviewThumbnailHelper
                .tryResizeAndSetSeekbarPreviewThumbnail(
                        player.getContext(),
                        seekbarPreviewThumbnailHolder.getBitmapAt(progress),
                        binding.currentSeekbarPreviewThumbnail,
                        binding.subtitleView::getWidth);

        adjustSeekbarPreviewContainer();
    }


    private void adjustSeekbarPreviewContainer() {
        try {
            // Should only be required when an error occurred before
            // and the layout was positioned in the center
            binding.bottomSeekbarPreviewLayout.setGravity(Gravity.NO_GRAVITY);

            // Calculate the current left position of seekbar progress in px
            // More info: https://stackoverflow.com/q/20493577
            final int currentSeekbarLeft =
                    binding.playbackSeekBar.getLeft()
                            + binding.playbackSeekBar.getPaddingLeft()
                            + binding.playbackSeekBar.getThumb().getBounds().left;

            // Calculate the (unchecked) left position of the container
            final int uncheckedContainerLeft =
                    currentSeekbarLeft - (binding.seekbarPreviewContainer.getWidth() / 2);

            // Fix the position so it's within the boundaries
            final int checkedContainerLeft =
                    Math.max(
                            Math.min(
                                    uncheckedContainerLeft,
                                    // Max left
                                    binding.playbackWindowRoot.getWidth()
                                            - binding.seekbarPreviewContainer.getWidth()
                            ),
                            0 // Min left
                    );

            // See also: https://stackoverflow.com/a/23249734
            final LinearLayout.LayoutParams params =
                    new LinearLayout.LayoutParams(
                            binding.seekbarPreviewContainer.getLayoutParams());
            params.setMarginStart(checkedContainerLeft);
            binding.seekbarPreviewContainer.setLayoutParams(params);
        } catch (final Exception ex) {
            Log.e(TAG, "Failed to adjust seekbarPreviewContainer", ex);
            // Fallback - position in the middle
            binding.bottomSeekbarPreviewLayout.setGravity(Gravity.CENTER);
        }
    }

    @Override // seekbar listener
    public void onStartTrackingTouch(final SeekBar seekBar) {
        if (DEBUG) {
            Log.d(TAG, "onStartTrackingTouch() called with: seekBar = [" + seekBar + "]");
        }
        if (player.getCurrentState() != STATE_PAUSED_SEEK) {
            player.changeState(STATE_PAUSED_SEEK);
        }

        player.saveWasPlaying();
        if (player.isPlaying()) {
            player.getExoPlayer().pause();
        }

        showControls(0);
        animate(binding.currentDisplaySeek, true, DEFAULT_CONTROLS_DURATION,
                AnimationType.SCALE_AND_ALPHA);
        animate(binding.currentSeekbarPreviewThumbnail, true, DEFAULT_CONTROLS_DURATION,
                AnimationType.SCALE_AND_ALPHA);
    }

    @Override // seekbar listener
    public void onStopTrackingTouch(final SeekBar seekBar) {
        if (DEBUG) {
            Log.d(TAG, "onStopTrackingTouch() called with: seekBar = [" + seekBar + "]");
        }

        player.seekTo(seekBar.getProgress());
        if (player.wasPlaying() || player.getExoPlayer().getDuration() == seekBar.getProgress()) {
            player.getExoPlayer().play();
        }

        binding.playbackCurrentTime.setText(getTimeString(seekBar.getProgress()));
        animate(binding.currentDisplaySeek, false, 200, AnimationType.SCALE_AND_ALPHA);
        animate(binding.currentSeekbarPreviewThumbnail, false, 200, AnimationType.SCALE_AND_ALPHA);

        if (player.getCurrentState() == STATE_PAUSED_SEEK) {
            player.changeState(STATE_BUFFERING);
        }
        if (!player.isProgressLoopRunning()) {
            player.startProgressLoop();
        }
        if (player.wasPlaying()) {
            showControlsThenHide();
        }
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Controls showing / hiding
    //////////////////////////////////////////////////////////////////////////*/
    //region Controls showing / hiding

    public boolean isControlsVisible() {
        return binding != null && binding.playbackControlRoot.getVisibility() == View.VISIBLE;
    }

    public void showControlsThenHide() {
        if (DEBUG) {
            Log.d(TAG, "showControlsThenHide() called");
        }

        showOrHideButtons();
        showSystemUIPartially();

        final long hideTime = binding.playbackControlRoot.isInTouchMode()
                ? DEFAULT_CONTROLS_HIDE_TIME
                : DPAD_CONTROLS_HIDE_TIME;

        showHideShadow(true, DEFAULT_CONTROLS_DURATION);
        animate(binding.playbackControlRoot, true, DEFAULT_CONTROLS_DURATION,
                AnimationType.ALPHA, 0, () -> hideControls(DEFAULT_CONTROLS_DURATION, hideTime));
    }

    public void showControls(final long duration) {
        if (DEBUG) {
            Log.d(TAG, "showControls() called");
        }
        showOrHideButtons();
        showSystemUIPartially();
        controlsVisibilityHandler.removeCallbacksAndMessages(null);
        showHideShadow(true, duration);
        animate(binding.playbackControlRoot, true, duration);
    }

    public void hideControls(final long duration, final long delay) {
        if (DEBUG) {
            Log.d(TAG, "hideControls() called with: duration = [" + duration
                    + "], delay = [" + delay + "]");
        }

        showOrHideButtons();

        controlsVisibilityHandler.removeCallbacksAndMessages(null);
        controlsVisibilityHandler.postDelayed(() -> {
            showHideShadow(false, duration);
            animate(binding.playbackControlRoot, false, duration, AnimationType.ALPHA,
                    0, this::hideSystemUIIfNeeded);
        }, delay);
    }

    public void showHideShadow(final boolean show, final long duration) {
        animate(binding.playbackControlsShadow, show, duration, AnimationType.ALPHA, 0, null);
        animate(binding.playerTopShadow, show, duration, AnimationType.ALPHA, 0, null);
        animate(binding.playerBottomShadow, show, duration, AnimationType.ALPHA, 0, null);
    }

    protected void showOrHideButtons() {
        @Nullable final PlayQueue playQueue = player.getPlayQueue();
        if (playQueue == null) {
            return;
        }

        final boolean showPrev = playQueue.getIndex() != 0;
        final boolean showNext = playQueue.getIndex() + 1 != playQueue.getStreams().size();

        binding.playPreviousButton.setVisibility(showPrev ? View.VISIBLE : View.INVISIBLE);
        binding.playPreviousButton.setAlpha(showPrev ? 1.0f : 0.0f);
        binding.playNextButton.setVisibility(showNext ? View.VISIBLE : View.INVISIBLE);
        binding.playNextButton.setAlpha(showNext ? 1.0f : 0.0f);
    }

    protected void showSystemUIPartially() {
        // system UI is really changed only by MainPlayerUi, so overridden there
    }

    protected void hideSystemUIIfNeeded() {
        // system UI is really changed only by MainPlayerUi, so overridden there
    }

    protected boolean isAnyListViewOpen() {
        // only MainPlayerUi has list views for the queue and for segments, so overridden there
        return false;
    }

    public boolean isFullscreen() {
        // only MainPlayerUi can be in fullscreen, so overridden there
        return false;
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Playback states
    //////////////////////////////////////////////////////////////////////////*/
    //region Playback states

    @Override
    public void onPrepared() {
        super.onPrepared();
        setVideoDurationToControls((int) player.getExoPlayer().getDuration());
        binding.playbackSpeed.setText(formatSpeed(player.getPlaybackSpeed()));
    }

    @Override
    public void onBlocked() {
        super.onBlocked();

        // if we are e.g. switching players, hide controls
        hideControls(DEFAULT_CONTROLS_DURATION, 0);

        binding.playbackSeekBar.setEnabled(false);
        binding.playbackSeekBar.getThumb()
                .setColorFilter(new PorterDuffColorFilter(Color.RED, PorterDuff.Mode.SRC_IN));

        binding.loadingPanel.setBackgroundColor(Color.BLACK);
        animate(binding.loadingPanel, true, 0);
        animate(binding.surfaceForeground, true, 100);

        binding.playPauseButton.setImageResource(R.drawable.ic_play_arrow);
        animatePlayButtons(false, 100);
        binding.getRoot().setKeepScreenOn(false);
    }

    @Override
    public void onPlaying() {
        super.onPlaying();

        updateStreamRelatedViews();

        binding.playbackSeekBar.setEnabled(true);
        binding.playbackSeekBar.getThumb()
                .setColorFilter(new PorterDuffColorFilter(Color.RED, PorterDuff.Mode.SRC_IN));

        binding.loadingPanel.setVisibility(View.GONE);

        animate(binding.currentDisplaySeek, false, 200, AnimationType.SCALE_AND_ALPHA);

        animate(binding.playPauseButton, false, 80, AnimationType.SCALE_AND_ALPHA, 0,
                () -> {
                    binding.playPauseButton.setImageResource(R.drawable.ic_pause);
                    animatePlayButtons(true, 200);
                    if (!isAnyListViewOpen()) {
                        binding.playPauseButton.requestFocus();
                    }
                });

        binding.getRoot().setKeepScreenOn(true);
    }

    @Override
    public void onBuffering() {
        super.onBuffering();
        binding.loadingPanel.setBackgroundColor(Color.TRANSPARENT);
        binding.loadingPanel.setVisibility(View.VISIBLE);
        binding.getRoot().setKeepScreenOn(true);
    }

    @Override
    public void onPaused() {
        super.onPaused();

        // Don't let UI elements popup during double tap seeking. This state is entered sometimes
        // during seeking/loading. This if-else check ensures that the controls aren't popping up.
        if (!playerGestureListener.isDoubleTapping()) {
            showControls(400);
            binding.loadingPanel.setVisibility(View.GONE);

            animate(binding.playPauseButton, false, 80, AnimationType.SCALE_AND_ALPHA, 0,
                    () -> {
                        binding.playPauseButton.setImageResource(R.drawable.ic_play_arrow);
                        animatePlayButtons(true, 200);
                        if (!isAnyListViewOpen()) {
                            binding.playPauseButton.requestFocus();
                        }
                    });
        }

        binding.getRoot().setKeepScreenOn(false);
    }

    @Override
    public void onPausedSeek() {
        super.onPausedSeek();
        animatePlayButtons(false, 100);
        binding.getRoot().setKeepScreenOn(true);
    }

    @Override
    public void onCompleted() {
        super.onCompleted();

        animate(binding.playPauseButton, false, 0, AnimationType.SCALE_AND_ALPHA, 0,
                () -> {
                    binding.playPauseButton.setImageResource(R.drawable.ic_replay);
                    animatePlayButtons(true, DEFAULT_CONTROLS_DURATION);
                });

        binding.getRoot().setKeepScreenOn(false);

        // When a (short) video ends the elements have to display the correct values - see #6180
        updatePlayBackElementsCurrentDuration(binding.playbackSeekBar.getMax());

        showControls(500);
        animate(binding.currentDisplaySeek, false, 200, AnimationType.SCALE_AND_ALPHA);
        binding.loadingPanel.setVisibility(View.GONE);
        animate(binding.surfaceForeground, true, 100);
    }

    private void animatePlayButtons(final boolean show, final long duration) {
        animate(binding.playPauseButton, show, duration, AnimationType.SCALE_AND_ALPHA);

        @Nullable final PlayQueue playQueue = player.getPlayQueue();
        if (playQueue == null) {
            return;
        }

        if (!show || playQueue.getIndex() > 0) {
            animate(
                    binding.playPreviousButton,
                    show,
                    duration,
                    AnimationType.SCALE_AND_ALPHA);
        }
        if (!show || playQueue.getIndex() + 1 < playQueue.getStreams().size()) {
            animate(
                    binding.playNextButton,
                    show,
                    duration,
                    AnimationType.SCALE_AND_ALPHA);
        }
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Repeat, shuffle, mute
    //////////////////////////////////////////////////////////////////////////*/
    //region Repeat, shuffle, mute

    public void onRepeatClicked() {
        if (DEBUG) {
            Log.d(TAG, "onRepeatClicked() called");
        }
        player.cycleNextRepeatMode();
    }

    public void onShuffleClicked() {
        if (DEBUG) {
            Log.d(TAG, "onShuffleClicked() called");
        }
        player.toggleShuffleModeEnabled();
    }

    @Override
    public void onRepeatModeChanged(@RepeatMode final int repeatMode) {
        super.onRepeatModeChanged(repeatMode);

        if (repeatMode == REPEAT_MODE_ALL) {
            binding.repeatButton.setImageResource(R.drawable.exo_controls_repeat_all);
        } else if (repeatMode == REPEAT_MODE_ONE) {
            binding.repeatButton.setImageResource(R.drawable.exo_controls_repeat_one);
        } else /* repeatMode == REPEAT_MODE_OFF */ {
            binding.repeatButton.setImageResource(R.drawable.exo_controls_repeat_off);
        }
    }

    @Override
    public void onShuffleModeEnabledChanged(final boolean shuffleModeEnabled) {
        super.onShuffleModeEnabledChanged(shuffleModeEnabled);
        setShuffleButton(shuffleModeEnabled);
    }

    @Override
    public void onMuteUnmuteChanged(final boolean isMuted) {
        super.onMuteUnmuteChanged(isMuted);
        setMuteButton(isMuted);
    }

    private void setMuteButton(final boolean isMuted) {
        binding.switchMute.setImageDrawable(AppCompatResources.getDrawable(context, isMuted
                ? R.drawable.ic_volume_off : R.drawable.ic_volume_up));
    }

    private void setShuffleButton(final boolean shuffled) {
        binding.shuffleButton.setImageAlpha(shuffled ? 255 : 77);
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Other player listeners
    //////////////////////////////////////////////////////////////////////////*/
    //region Other player listeners

    @Override
    public void onPlaybackParametersChanged(@NonNull final PlaybackParameters playbackParameters) {
        super.onPlaybackParametersChanged(playbackParameters);
        binding.playbackSpeed.setText(formatSpeed(playbackParameters.speed));
    }

    @Override
    public void onRenderedFirstFrame() {
        super.onRenderedFirstFrame();
        //TODO check if this causes black screen when switching to fullscreen
        animate(binding.surfaceForeground, false, DEFAULT_CONTROLS_DURATION);
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Metadata & stream related views
    //////////////////////////////////////////////////////////////////////////*/
    //region Metadata & stream related views

    @Override
    public void onMetadataChanged(@NonNull final StreamInfo info) {
        super.onMetadataChanged(info);

        updateStreamRelatedViews();

        binding.titleTextView.setText(info.getName());
        binding.channelTextView.setText(info.getUploaderName());

        this.seekbarPreviewThumbnailHolder.resetFrom(player.getContext(), info.getPreviewFrames());
    }

    private void updateStreamRelatedViews() {
        //noinspection SimplifyOptionalCallChains
        if (!player.getCurrentStreamInfo().isPresent()) {
            return;
        }
        final StreamInfo info = player.getCurrentStreamInfo().get();

        binding.qualityTextView.setVisibility(View.GONE);
        binding.playbackSpeed.setVisibility(View.GONE);

        binding.playbackEndTime.setVisibility(View.GONE);
        binding.playbackLiveSync.setVisibility(View.GONE);

        switch (info.getStreamType()) {
            case AUDIO_STREAM:
            case POST_LIVE_AUDIO_STREAM:
                binding.surfaceView.setVisibility(View.GONE);
                binding.endScreen.setVisibility(View.VISIBLE);
                binding.playbackEndTime.setVisibility(View.VISIBLE);
                break;

            case AUDIO_LIVE_STREAM:
                binding.surfaceView.setVisibility(View.GONE);
                binding.endScreen.setVisibility(View.VISIBLE);
                binding.playbackLiveSync.setVisibility(View.VISIBLE);
                break;

            case LIVE_STREAM:
                binding.surfaceView.setVisibility(View.VISIBLE);
                binding.endScreen.setVisibility(View.GONE);
                binding.playbackLiveSync.setVisibility(View.VISIBLE);
                break;

            case VIDEO_STREAM:
            case POST_LIVE_STREAM:
                //noinspection SimplifyOptionalCallChains
                if (player.getCurrentMetadata() != null
                        && !player.getCurrentMetadata().getMaybeQuality().isPresent()
                        || (info.getVideoStreams().isEmpty()
                        && info.getVideoOnlyStreams().isEmpty())) {
                    break;
                }

                buildQualityMenu();

                binding.qualityTextView.setVisibility(View.VISIBLE);
                binding.surfaceView.setVisibility(View.VISIBLE);
                // fallthrough
            default:
                binding.endScreen.setVisibility(View.GONE);
                binding.playbackEndTime.setVisibility(View.VISIBLE);
                break;
        }

        buildPlaybackSpeedMenu();
        binding.playbackSpeed.setVisibility(View.VISIBLE);
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Popup menus ("popup" means that they pop up, not that they belong to the popup player)
    //////////////////////////////////////////////////////////////////////////*/
    //region Popup menus ("popup" means that they pop up, not that they belong to the popup player)

    private void buildQualityMenu() {
        if (qualityPopupMenu == null) {
            return;
        }
        qualityPopupMenu.getMenu().removeGroup(POPUP_MENU_ID_QUALITY);

        @Nullable final List<VideoStream> availableStreams
                = Optional.ofNullable(player.getCurrentMetadata())
                .flatMap(MediaItemTag::getMaybeQuality)
                .map(MediaItemTag.Quality::getSortedVideoStreams)
                .orElse(null);
        if (availableStreams == null) {
            return;
        }

        for (int i = 0; i < availableStreams.size(); i++) {
            final VideoStream videoStream = availableStreams.get(i);
            qualityPopupMenu.getMenu().add(POPUP_MENU_ID_QUALITY, i, Menu.NONE, MediaFormat
                    .getNameById(videoStream.getFormatId()) + " " + videoStream.getResolution());
        }
        final VideoStream selectedVideoStream = player.getSelectedVideoStream();
        if (selectedVideoStream != null) {
            binding.qualityTextView.setText(selectedVideoStream.getResolution());
        }
        qualityPopupMenu.setOnMenuItemClickListener(this);
        qualityPopupMenu.setOnDismissListener(this);
    }

    private void buildPlaybackSpeedMenu() {
        if (playbackSpeedPopupMenu == null) {
            return;
        }
        playbackSpeedPopupMenu.getMenu().removeGroup(POPUP_MENU_ID_PLAYBACK_SPEED);

        for (int i = 0; i < PLAYBACK_SPEEDS.length; i++) {
            playbackSpeedPopupMenu.getMenu().add(POPUP_MENU_ID_PLAYBACK_SPEED, i, Menu.NONE,
                    formatSpeed(PLAYBACK_SPEEDS[i]));
        }
        binding.playbackSpeed.setText(formatSpeed(player.getPlaybackSpeed()));
        playbackSpeedPopupMenu.setOnMenuItemClickListener(this);
        playbackSpeedPopupMenu.setOnDismissListener(this);
    }

    private void buildCaptionMenu(@NonNull final List<String> availableLanguages) {
        if (captionPopupMenu == null) {
            return;
        }
        captionPopupMenu.getMenu().removeGroup(POPUP_MENU_ID_CAPTION);

        captionPopupMenu.setOnDismissListener(this);

        // Add option for turning off caption
        final MenuItem captionOffItem = captionPopupMenu.getMenu().add(POPUP_MENU_ID_CAPTION,
                0, Menu.NONE, R.string.caption_none);
        captionOffItem.setOnMenuItemClickListener(menuItem -> {
            final int textRendererIndex = player.getCaptionRendererIndex();
            if (textRendererIndex != RENDERER_UNAVAILABLE) {
                player.getTrackSelector().setParameters(player.getTrackSelector()
                        .buildUponParameters().setRendererDisabled(textRendererIndex, true));
            }
            player.getPrefs().edit()
                    .remove(context.getString(R.string.caption_user_set_key)).apply();
            return true;
        });

        // Add all available captions
        for (int i = 0; i < availableLanguages.size(); i++) {
            final String captionLanguage = availableLanguages.get(i);
            final MenuItem captionItem = captionPopupMenu.getMenu().add(POPUP_MENU_ID_CAPTION,
                    i + 1, Menu.NONE, captionLanguage);
            captionItem.setOnMenuItemClickListener(menuItem -> {
                final int textRendererIndex = player.getCaptionRendererIndex();
                if (textRendererIndex != RENDERER_UNAVAILABLE) {
                    // DefaultTrackSelector will select for text tracks in the following order.
                    // When multiple tracks share the same rank, a random track will be chosen.
                    // 1. ANY track exactly matching preferred language name
                    // 2. ANY track exactly matching preferred language stem
                    // 3. ROLE_FLAG_CAPTION track matching preferred language stem
                    // 4. ROLE_FLAG_DESCRIBES_MUSIC_AND_SOUND track matching preferred language stem
                    // This means if a caption track of preferred language is not available,
                    // then an auto-generated track of that language will be chosen automatically.
                    player.getTrackSelector().setParameters(player.getTrackSelector()
                            .buildUponParameters()
                            .setPreferredTextLanguages(captionLanguage,
                                    PlayerHelper.captionLanguageStemOf(captionLanguage))
                            .setPreferredTextRoleFlags(C.ROLE_FLAG_CAPTION)
                            .setRendererDisabled(textRendererIndex, false));
                    player.getPrefs().edit().putString(context.getString(
                            R.string.caption_user_set_key), captionLanguage).apply();
                }
                return true;
            });
        }
        captionPopupMenu.setOnDismissListener(this);

        // apply caption language from previous user preference
        final int textRendererIndex = player.getCaptionRendererIndex();
        if (textRendererIndex == RENDERER_UNAVAILABLE) {
            return;
        }

        // If user prefers to show no caption, then disable the renderer.
        // Otherwise, DefaultTrackSelector may automatically find an available caption
        // and display that.
        final String userPreferredLanguage =
                player.getPrefs().getString(context.getString(R.string.caption_user_set_key), null);
        if (userPreferredLanguage == null) {
            player.getTrackSelector().setParameters(player.getTrackSelector().buildUponParameters()
                    .setRendererDisabled(textRendererIndex, true));
            return;
        }

        // Only set preferred language if it does not match the user preference,
        // otherwise there might be an infinite cycle at onTextTracksChanged.
        final List<String> selectedPreferredLanguages =
                player.getTrackSelector().getParameters().preferredTextLanguages;
        if (!selectedPreferredLanguages.contains(userPreferredLanguage)) {
            player.getTrackSelector().setParameters(player.getTrackSelector().buildUponParameters()
                    .setPreferredTextLanguages(userPreferredLanguage,
                            PlayerHelper.captionLanguageStemOf(userPreferredLanguage))
                    .setPreferredTextRoleFlags(C.ROLE_FLAG_CAPTION)
                    .setRendererDisabled(textRendererIndex, false));
        }
    }

    protected abstract void onPlaybackSpeedClicked();

    private void onQualityClicked() {
        qualityPopupMenu.show();
        isSomePopupMenuVisible = true;

        final VideoStream videoStream = player.getSelectedVideoStream();
        if (videoStream != null) {
            //noinspection SetTextI18n
            binding.qualityTextView.setText(MediaFormat.getNameById(videoStream.getFormatId())
                    + " " + videoStream.getResolution());
        }

        player.saveWasPlaying();
    }

    /**
     * Called when an item of the quality selector or the playback speed selector is selected.
     */
    @Override
    public boolean onMenuItemClick(@NonNull final MenuItem menuItem) {
        if (DEBUG) {
            Log.d(TAG, "onMenuItemClick() called with: "
                    + "menuItem = [" + menuItem + "], "
                    + "menuItem.getItemId = [" + menuItem.getItemId() + "]");
        }

        if (menuItem.getGroupId() == POPUP_MENU_ID_QUALITY) {
            final int menuItemIndex = menuItem.getItemId();
            @Nullable final MediaItemTag currentMetadata = player.getCurrentMetadata();
            //noinspection SimplifyOptionalCallChains
            if (currentMetadata == null || !currentMetadata.getMaybeQuality().isPresent()) {
                return true;
            }

            final MediaItemTag.Quality quality = currentMetadata.getMaybeQuality().get();
            final List<VideoStream> availableStreams = quality.getSortedVideoStreams();
            final int selectedStreamIndex = quality.getSelectedVideoStreamIndex();
            if (selectedStreamIndex == menuItemIndex || availableStreams.size() <= menuItemIndex) {
                return true;
            }

            player.saveStreamProgressState(); //TODO added, check if good
            final String newResolution = availableStreams.get(menuItemIndex).getResolution();
            player.setRecovery();
            player.setPlaybackQuality(newResolution);
            player.reloadPlayQueueManager();

            binding.qualityTextView.setText(menuItem.getTitle());
            return true;
        } else if (menuItem.getGroupId() == POPUP_MENU_ID_PLAYBACK_SPEED) {
            final int speedIndex = menuItem.getItemId();
            final float speed = PLAYBACK_SPEEDS[speedIndex];

            player.setPlaybackSpeed(speed);
            binding.playbackSpeed.setText(formatSpeed(speed));
        }

        return false;
    }

    /**
     * Called when some popup menu is dismissed.
     */
    @Override
    public void onDismiss(@Nullable final PopupMenu menu) {
        if (DEBUG) {
            Log.d(TAG, "onDismiss() called with: menu = [" + menu + "]");
        }
        isSomePopupMenuVisible = false; //TODO check if this works
        final VideoStream selectedVideoStream = player.getSelectedVideoStream();
        if (selectedVideoStream != null) {
            binding.qualityTextView.setText(selectedVideoStream.getResolution());
        }
        if (player.isPlaying()) {
            hideControls(DEFAULT_CONTROLS_DURATION, 0);
            hideSystemUIIfNeeded();
        }
    }

    private void onCaptionClicked() {
        if (DEBUG) {
            Log.d(TAG, "onCaptionClicked() called");
        }
        captionPopupMenu.show();
        isSomePopupMenuVisible = true;
    }

    public boolean isSomePopupMenuVisible() {
        return isSomePopupMenuVisible;
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Captions (text tracks)
    //////////////////////////////////////////////////////////////////////////*/
    //region Captions (text tracks)

    @Override
    public void onTextTracksChanged(@NonNull final Tracks currentTracks) {
        super.onTextTracksChanged(currentTracks);

        final boolean trackTypeTextSupported = !currentTracks.containsType(C.TRACK_TYPE_TEXT)
                || currentTracks.isTypeSupported(C.TRACK_TYPE_TEXT, false);
        if (getPlayer().getTrackSelector().getCurrentMappedTrackInfo() == null
                || !trackTypeTextSupported) {
            binding.captionTextView.setVisibility(View.GONE);
            return;
        }

        // Extract all loaded languages
        final List<Tracks.Group> textTracks = currentTracks
                .getGroups()
                .stream()
                .filter(trackGroupInfo -> C.TRACK_TYPE_TEXT == trackGroupInfo.getType())
                .collect(Collectors.toList());
        final List<String> availableLanguages = textTracks.stream()
                .map(Tracks.Group::getMediaTrackGroup)
                .filter(textTrack -> textTrack.length > 0)
                .map(textTrack -> textTrack.getFormat(0).language)
                .collect(Collectors.toList());

        // Find selected text track
        final Optional<Format> selectedTracks = textTracks.stream()
                .filter(Tracks.Group::isSelected)
                .filter(info -> info.getMediaTrackGroup().length >= 1)
                .map(info -> info.getMediaTrackGroup().getFormat(0))
                .findFirst();

        // Build UI
        buildCaptionMenu(availableLanguages);
        //noinspection SimplifyOptionalCallChains
        if (player.getTrackSelector().getParameters().getRendererDisabled(
                player.getCaptionRendererIndex()) || !selectedTracks.isPresent()) {
            binding.captionTextView.setText(R.string.caption_none);
        } else {
            binding.captionTextView.setText(selectedTracks.get().language);
        }
        binding.captionTextView.setVisibility(
                availableLanguages.isEmpty() ? View.GONE : View.VISIBLE);
    }

    @Override
    public void onCues(@NonNull final List<Cue> cues) {
        super.onCues(cues);
        binding.subtitleView.setCues(cues);
    }

    private void setupSubtitleView() {
        setupSubtitleView(PlayerHelper.getCaptionScale(context));
        final CaptionStyleCompat captionStyle = PlayerHelper.getCaptionStyle(context);
        binding.subtitleView.setApplyEmbeddedStyles(captionStyle == CaptionStyleCompat.DEFAULT);
        binding.subtitleView.setStyle(captionStyle);
    }

    protected abstract void setupSubtitleView(float captionScale);
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Click listeners
    //////////////////////////////////////////////////////////////////////////*/
    //region Click listeners

    @Override
    public void onClick(final View v) {
        if (DEBUG) {
            Log.d(TAG, "onClick() called with: v = [" + v + "]");
        }
        if (v.getId() == binding.resizeTextView.getId()) {
            onResizeClicked();
        } else if (v.getId() == binding.captionTextView.getId()) {
            onCaptionClicked();
        } else if (v.getId() == binding.playbackLiveSync.getId()) {
            player.seekToDefault();
        } else if (v.getId() == binding.playPauseButton.getId()) {
            player.playPause();
        } else if (v.getId() == binding.playPreviousButton.getId()) {
            player.playPrevious();
        } else if (v.getId() == binding.playNextButton.getId()) {
            player.playNext();
        } else if (v.getId() == binding.moreOptionsButton.getId()) {
            onMoreOptionsClicked();
        } else if (v.getId() == binding.share.getId()) {
            final PlayQueueItem currentItem = player.getCurrentItem();
            if (currentItem != null) {
                ShareUtils.shareText(context, currentItem.getTitle(),
                        player.getVideoUrlAtCurrentTime(), currentItem.getThumbnailUrl());
            }
        } else if (v.getId() == binding.playWithKodi.getId()) {
            onPlayWithKodiClicked();
        } else if (v.getId() == binding.openInBrowser.getId()) {
            onOpenInBrowserClicked();
        } else if (v.getId() == binding.fullScreenButton.getId()) {
            player.setRecovery();
            NavigationHelper.playOnMainPlayer(context, player.getPlayQueue(), true);
            return;
        } else if (v.getId() == binding.switchMute.getId()) {
            player.toggleMute();
        } else if (v.getId() == binding.playerCloseButton.getId()) {
            // set package to this app's package to prevent the intent from being seen outside
            context.sendBroadcast(new Intent(VideoDetailFragment.ACTION_HIDE_MAIN_PLAYER)
                    .setPackage(App.PACKAGE_NAME));
        } else if (v.getId() == binding.playbackSpeed.getId()) {
            onPlaybackSpeedClicked();
        } else if (v.getId() == binding.qualityTextView.getId()) {
            onQualityClicked();
        }

        manageControlsAfterOnClick(v);
    }

    /**
     * Manages the controls after a click occurred on the player UI.
     * @param v – The view that was clicked
     */
    public void manageControlsAfterOnClick(@NonNull final View v) {
        if (player.getCurrentState() == STATE_COMPLETED) {
            return;
        }

        controlsVisibilityHandler.removeCallbacksAndMessages(null);
        showHideShadow(true, DEFAULT_CONTROLS_DURATION);
        animate(binding.playbackControlRoot, true, DEFAULT_CONTROLS_DURATION,
                AnimationType.ALPHA, 0, () -> {
                    if (player.getCurrentState() == STATE_PLAYING && !isSomePopupMenuVisible) {
                        if (v.getId() == binding.playPauseButton.getId()
                                // Hide controls in fullscreen immediately
                                || (v.getId() == binding.screenRotationButton.getId()
                                && isFullscreen())) {
                            hideControls(0, 0);
                        } else {
                            hideControls(DEFAULT_CONTROLS_DURATION, DEFAULT_CONTROLS_HIDE_TIME);
                        }
                    }
                });
    }

    @Override
    public boolean onLongClick(final View v) {
        if (v.getId() == binding.share.getId()) {
            ShareUtils.copyToClipboard(context, player.getVideoUrlAtCurrentTime());
        }
        return true;
    }

    public boolean onKeyDown(final int keyCode) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK:
                if (DeviceUtils.isTv(context) && isControlsVisible()) {
                    hideControls(0, 0);
                    return true;
                }
                break;
            case KeyEvent.KEYCODE_DPAD_UP:
            case KeyEvent.KEYCODE_DPAD_LEFT:
            case KeyEvent.KEYCODE_DPAD_DOWN:
            case KeyEvent.KEYCODE_DPAD_RIGHT:
            case KeyEvent.KEYCODE_DPAD_CENTER:
                if ((binding.getRoot().hasFocus() && !binding.playbackControlRoot.hasFocus())
                        || isAnyListViewOpen()) {
                    // do not interfere with focus in playlist and play queue etc.
                    break;
                }

                if (player.getCurrentState() == org.schabi.newpipe.player.Player.STATE_BLOCKED) {
                    return true;
                }

                if (isControlsVisible()) {
                    hideControls(DEFAULT_CONTROLS_DURATION, DPAD_CONTROLS_HIDE_TIME);
                } else {
                    binding.playPauseButton.requestFocus();
                    showControlsThenHide();
                    showSystemUIPartially();
                    return true;
                }
                break;
            default:
                break; // ignore other keys
        }

        return false;
    }

    private void onMoreOptionsClicked() {
        if (DEBUG) {
            Log.d(TAG, "onMoreOptionsClicked() called");
        }

        final boolean isMoreControlsVisible =
                binding.secondaryControls.getVisibility() == View.VISIBLE;

        animateRotation(binding.moreOptionsButton, DEFAULT_CONTROLS_DURATION,
                isMoreControlsVisible ? 0 : 180);
        animate(binding.secondaryControls, !isMoreControlsVisible, DEFAULT_CONTROLS_DURATION,
                AnimationType.SLIDE_AND_ALPHA, 0, () -> {
                    // Fix for a ripple effect on background drawable.
                    // When view returns from GONE state it takes more milliseconds than returning
                    // from INVISIBLE state. And the delay makes ripple background end to fast
                    if (isMoreControlsVisible) {
                        binding.secondaryControls.setVisibility(View.INVISIBLE);
                    }
                });
        showControls(DEFAULT_CONTROLS_DURATION);
    }

    private void onPlayWithKodiClicked() {
        if (player.getCurrentMetadata() != null) {
            player.pause();
            try {
                NavigationHelper.playWithKore(context, Uri.parse(player.getVideoUrl()));
            } catch (final Exception e) {
                if (DEBUG) {
                    Log.i(TAG, "Failed to start kore", e);
                }
                KoreUtils.showInstallKoreDialog(player.getContext());
            }
        }
    }

    private void onOpenInBrowserClicked() {
        player.getCurrentStreamInfo().ifPresent(streamInfo ->
                ShareUtils.openUrlInBrowser(player.getContext(), streamInfo.getOriginalUrl()));
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Video size
    //////////////////////////////////////////////////////////////////////////*/
    //region Video size

    protected void setResizeMode(@AspectRatioFrameLayout.ResizeMode final int resizeMode) {
        binding.surfaceView.setResizeMode(resizeMode);
        binding.resizeTextView.setText(PlayerHelper.resizeTypeOf(context, resizeMode));
    }

    void onResizeClicked() {
        setResizeMode(nextResizeModeAndSaveToPrefs(player, binding.surfaceView.getResizeMode()));
    }

    @Override
    public void onVideoSizeChanged(@NonNull final VideoSize videoSize) {
        super.onVideoSizeChanged(videoSize);
        binding.surfaceView.setAspectRatio(((float) videoSize.width) / videoSize.height);
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // SurfaceHolderCallback helpers
    //////////////////////////////////////////////////////////////////////////*/
    //region SurfaceHolderCallback helpers

    /**
     * Connects the video surface to the exo player. This can be called anytime without the risk for
     * issues to occur, since the player will run just fine when no surface is connected. Therefore
     * the video surface will be setup only when all of these conditions are true: it is not already
     * setup (this just prevents wasting resources to setup the surface again), there is an exo
     * player, the root view is attached to a parent and the surface view is valid/unreleased (the
     * latter two conditions prevent "The surface has been released" errors). So this function can
     * be called many times and even while the UI is in unready states.
     */
    public void setupVideoSurfaceIfNeeded() {
        if (!surfaceIsSetup && player.getExoPlayer() != null
                && binding.getRoot().getParent() != null) {
            // make sure there is nothing left over from previous calls
            clearVideoSurface();

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { // >=API23
                surfaceHolderCallback = new SurfaceHolderCallback(context, player.getExoPlayer());
                binding.surfaceView.getHolder().addCallback(surfaceHolderCallback);

                // ensure player is using an unreleased surface, which the surfaceView might not be
                // when starting playback on background or during player switching
                if (binding.surfaceView.getHolder().getSurface().isValid()) {
                    // initially set the surface manually otherwise
                    // onRenderedFirstFrame() will not be called
                    player.getExoPlayer().setVideoSurfaceHolder(binding.surfaceView.getHolder());
                }
            } else {
                player.getExoPlayer().setVideoSurfaceView(binding.surfaceView);
            }

            surfaceIsSetup = true;
        }
    }

    private void clearVideoSurface() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M // >=API23
                && surfaceHolderCallback != null) {
            binding.surfaceView.getHolder().removeCallback(surfaceHolderCallback);
            surfaceHolderCallback.release();
            surfaceHolderCallback = null;
        }
        Optional.ofNullable(player.getExoPlayer()).ifPresent(ExoPlayer::clearVideoSurface);
        surfaceIsSetup = false;
    }
    //endregion


    /*//////////////////////////////////////////////////////////////////////////
    // Getters
    //////////////////////////////////////////////////////////////////////////*/
    //region Getters

    public PlayerBinding getBinding() {
        return binding;
    }

    public GestureDetector getGestureDetector() {
        return gestureDetector;
    }
    //endregion
}