plezy/lib/widgets/video_controls/helpers/track_selection_helper.dart

import 'package:flutter/material.dart';
import 'package:plezy/widgets/app_icon.dart';
import 'package:material_symbols_icons/symbols.dart';
import '../../../i18n/strings.g.dart';
import '../../../mpv/mpv.dart';
import '../../../theme/mono_tokens.dart';
import '../../../utils/track_label_builder.dart';
import '../../../widgets/focusable_list_tile.dart';

class TrackSelectionHelper {
  /// Get the appropriate empty message based on track type
  static String getEmptyMessage<T>() {
    if (T == SubtitleTrack) {
      return t.videoControls.noSubtitlesAvailable;
    } else if (T == AudioTrack) {
      return t.videoControls.noAudioTracksAvailable;
    }
    return t.videoControls.noTracksAvailable;
  }

  static Widget buildEmptyState<T>() {
    return Center(child: Text(getEmptyMessage<T>()));
  }

  /// Check if "Off" is selected for a track
  static bool isOffSelected<T>(T? selectedTrack, bool Function(T track)? isOffTrack) {
    return selectedTrack == null || (isOffTrack?.call(selectedTrack) ?? false);
  }

  static String getTrackId<T>(T track) {
    if (track is AudioTrack) {
      return track.id;
    } else if (track is SubtitleTrack) {
      return track.id;
    }
    return '';
  }

  static Widget buildOffTile<T>({
    required BuildContext context,
    required bool isSelected,
    required VoidCallback onTap,
    Key? key,
    FocusNode? focusNode,
    VoidCallback? onLongPress,
    VoidCallback? onSecondaryTap,
    Widget? badge,
  }) {
    return _buildSelectableTile(
      context: context,
      key: key,
      label: t.common.off,
      isSelected: isSelected,
      onTap: onTap,
      focusNode: focusNode,
      onLongPress: onLongPress,
      onSecondaryTap: onSecondaryTap,
      badge: badge,
    );
  }

  static Widget buildTrackTile<T>({
    required BuildContext context,
    required TrackLabel label,
    required bool isSelected,
    required VoidCallback onTap,
    Key? key,
    FocusNode? focusNode,
    VoidCallback? onLongPress,
    VoidCallback? onSecondaryTap,
    Widget? badge,
  }) {
    return _buildSelectableTile(
      context: context,
      key: key,
      label: label.primary,
      secondaryLabel: label.secondary,
      isSelected: isSelected,
      onTap: onTap,
      focusNode: focusNode,
      onLongPress: onLongPress,
      onSecondaryTap: onSecondaryTap,
      badge: badge,
    );
  }

  /// Build a numbered badge for primary/secondary subtitle indicators.
  static Widget buildTrackBadge(BuildContext context, int number) {
    final colorScheme = Theme.of(context).colorScheme;
    return Container(
      width: 18,
      height: 18,
      decoration: BoxDecoration(color: colorScheme.primary, borderRadius: BorderRadius.circular(4)),
      alignment: .center,
      child: Text(
        number.toString(),
        style: TextStyle(color: colorScheme.onPrimary, fontSize: 11, fontWeight: .bold),
      ),
    );
  }

  static Widget _buildSelectableTile({
    required BuildContext context,
    required String label,
    required bool isSelected,
    required VoidCallback onTap,
    String? secondaryLabel,
    Key? key,
    FocusNode? focusNode,
    VoidCallback? onLongPress,
    VoidCallback? onSecondaryTap,
    Widget? badge,
  }) {
    final primaryColor = Theme.of(context).colorScheme.primary;
    Widget? trailing;
    if (badge != null) {
      trailing = badge;
    } else if (isSelected) {
      trailing = AppIcon(Symbols.check_rounded, fill: 1, color: primaryColor);
    }

    Widget tile = FocusableListTile(
      key: key,
      focusNode: focusNode,
      selected: isSelected,
      title: Text(
        label,
        style: TextStyle(color: isSelected ? primaryColor : null),
        maxLines: 1,
        overflow: .ellipsis,
      ),
      subtitle: secondaryLabel == null
          ? null
          : Text(
              secondaryLabel,
              style: TextStyle(
                color: isSelected ? primaryColor.withValues(alpha: 0.7) : tokens(context).textMuted,
                fontSize: 12,
              ),
              maxLines: 1,
              overflow: .ellipsis,
            ),
      trailing: trailing,
      onTap: onTap,
      onLongPress: onLongPress,
    );

    if (onSecondaryTap != null) {
      tile = GestureDetector(onSecondaryTap: onSecondaryTap, child: tile);
    }

    return tile;
  }
}