// Author: fruit.com.cn

import 'package:flutter/material.dart';

import '../../../core/data/models/drama.dart';
import '../../../core/data/models/watch_progress.dart';
import '../../../core/theme/app_colors.dart';
import '../../../core/theme/app_dimens.dart';
import '../../../core/widgets/remote_image.dart';
import '../../../l10n/app_localizations.dart';

const double _railHeight = 96;
const double _cardWidth = 286;
const double _coverWidth = 64;
const double _playSize = 34;

/// One drama/record pair rendered by the continuation rail.
typedef HomeContinueItem = ({Drama drama, WatchProgress record});

/// Home continuation cards for records that still have unwatched time.
class HomeContinueWatching extends StatelessWidget {
  const HomeContinueWatching({
    super.key,
    required this.items,
    required this.onPlay,
  });

  final List<HomeContinueItem> items;
  final void Function(Drama drama, WatchProgress record) onPlay;

  @override
  Widget build(BuildContext context) {
    if (items.isEmpty) return const SizedBox.shrink();
    return SizedBox(
      key: const Key('home-continue-watching'),
      height: _railHeight,
      child: ListView.separated(
        scrollDirection: Axis.horizontal,
        padding: const EdgeInsets.symmetric(
          horizontal: AppDimens.pageHorizontal,
        ),
        itemCount: items.length,
        separatorBuilder: (_, _) => const SizedBox(width: AppDimens.spaceSm),
        itemBuilder: (context, index) {
          final item = items[index];
          return _ContinueCard(
            item: item,
            onPlay: () => onPlay(item.drama, item.record),
          );
        },
      ),
    );
  }
}

class _ContinueCard extends StatelessWidget {
  const _ContinueCard({required this.item, required this.onPlay});

  final HomeContinueItem item;
  final VoidCallback onPlay;

  @override
  Widget build(BuildContext context) {
    final l10n = AppLocalizations.of(context)!;
    return Container(
      width: _cardWidth,
      padding: const EdgeInsets.all(AppDimens.spaceSm),
      decoration: BoxDecoration(
        color: AppColors.card,
        borderRadius: BorderRadius.circular(AppDimens.cardRadius),
      ),
      child: Row(
        children: [
          ClipRRect(
            borderRadius: BorderRadius.circular(AppDimens.innerRadius),
            child: RemoteImage(
              item.drama.posterUrl,
              width: _coverWidth,
              height: _railHeight - AppDimens.spaceLg,
            ),
          ),
          const SizedBox(width: AppDimens.spaceSm),
          Expanded(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  item.drama.title,
                  maxLines: 1,
                  overflow: TextOverflow.ellipsis,
                  style: const TextStyle(
                    color: AppColors.onSurface,
                    fontSize: AppDimens.previewCardTitle,
                    fontWeight: FontWeight.w700,
                  ),
                ),
                const SizedBox(height: AppDimens.spaceXs),
                Text(
                  _progressText(l10n, item.drama, item.record),
                  key: Key('home-continue-progress-${item.drama.id}'),
                  maxLines: 1,
                  overflow: TextOverflow.ellipsis,
                  style: const TextStyle(
                    color: AppColors.muted,
                    fontSize: AppDimens.cardMeta,
                  ),
                ),
              ],
            ),
          ),
          const SizedBox(width: AppDimens.spaceSm),
          IconButton(
            key: Key('home-continue-play-${item.drama.id}'),
            onPressed: onPlay,
            style: IconButton.styleFrom(
              backgroundColor: AppColors.blue,
              foregroundColor: AppColors.onPrimary,
              fixedSize: const Size.square(_playSize),
              padding: EdgeInsets.zero,
            ),
            icon: const Icon(
              Icons.play_arrow_rounded,
              size: AppDimens.accountIcon,
            ),
          ),
        ],
      ),
    );
  }

  String _progressText(
    AppLocalizations l10n,
    Drama drama,
    WatchProgress record,
  ) {
    final episode = drama.episodes.where(
      (value) => value.id == record.episodeId,
    );
    final number = episode.isEmpty ? 1 : episode.first.number;
    final remaining = record.duration - record.position;
    final minutes = remaining.inSeconds <= 0
        ? 0
        : (remaining.inSeconds / Duration.secondsPerMinute).ceil();
    return l10n.episodeRemaining(number, minutes);
  }
}