// Author: fruit.com.cn

import 'package:flutter/material.dart';

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

const double _coverAspectRatio = 5 / 6;
final RegExp _tagSplitter = RegExp(r'[,/、·]');

enum HomeDramaBadge { hot, newRelease, anime }

class HomeFeedCard extends StatelessWidget {
  const HomeFeedCard({
    super.key,
    required this.drama,
    required this.onTap,
    this.now,
  });

  final Drama drama;
  final VoidCallback onTap;
  final DateTime? now;

  @override
  Widget build(BuildContext context) {
    final l10n = AppLocalizations.of(context)!;
    return Container(
      key: Key('home-feed-card-${drama.id}'),
      decoration: BoxDecoration(
        color: AppColors.contentCard,
        borderRadius: BorderRadius.circular(AppDimens.homeCardRadius),
        border: Border.all(color: AppColors.contentBorder),
      ),
      child: Material(
        color: AppColors.transparent,
        borderRadius: BorderRadius.circular(AppDimens.homeCardRadius),
        clipBehavior: Clip.antiAlias,
        child: InkWell(
          onTap: onTap,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              _cover(l10n),
              Expanded(
                child: Padding(
                  padding: const EdgeInsets.all(AppDimens.homeCardPadding),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        drama.title,
                        key: Key('home-feed-title-${drama.id}'),
                        maxLines: 2,
                        overflow: TextOverflow.ellipsis,
                        style: const TextStyle(
                          color: AppColors.navSelected,
                          fontSize: AppDimens.homeCardTitle,
                          fontWeight: FontWeight.w600,
                          height: 1.25,
                        ),
                      ),
                      const SizedBox(height: AppDimens.spaceXs),
                      _tags(),
                    ],
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  Widget _cover(AppLocalizations l10n) {
    final badge = _badge();
    return AspectRatio(
      aspectRatio: _coverAspectRatio,
      child: Stack(
        fit: StackFit.expand,
        children: [
          RemoteImage(
            drama.posterUrl,
            key: Key('home-feed-cover-${drama.id}'),
            fit: BoxFit.cover,
            showFallbackIcon: true,
            fallbackColor: AppColors.contentSurface,
          ),
          if (badge != null)
            Positioned(
              top: AppDimens.spaceXs,
              left: AppDimens.spaceXs,
              child: _badgeChip(l10n, badge),
            ),
          Positioned(
            left: AppDimens.spaceXs,
            bottom: AppDimens.spaceXs,
            child: _views(),
          ),
        ],
      ),
    );
  }

  HomeDramaBadge? _badge() {
    if (drama.dramaType.toUpperCase() == 'ANIME') {
      return HomeDramaBadge.anime;
    }
    if (isNewDrama(drama, now: now)) return HomeDramaBadge.newRelease;
    if (isHotDrama(drama)) {
      return HomeDramaBadge.hot;
    }
    return null;
  }

  Widget _badgeChip(AppLocalizations l10n, HomeDramaBadge badge) {
    final (label, color) = switch (badge) {
      HomeDramaBadge.hot => (l10n.homeBadgeHot, AppColors.badgeHot),
      HomeDramaBadge.newRelease => (l10n.homeBadgeNew, AppColors.badgeNew),
      HomeDramaBadge.anime => (l10n.homeBadgeAnime, AppColors.badgeAnime),
    };
    return Container(
      key: Key('home-feed-badge-${badge.name}-${drama.id}'),
      padding: const EdgeInsets.symmetric(
        horizontal: AppDimens.spaceSm,
        vertical: 2,
      ),
      decoration: BoxDecoration(
        color: color,
        borderRadius: BorderRadius.circular(AppDimens.chipRadius),
      ),
      child: Text(
        label,
        style: const TextStyle(
          color: AppColors.navSelected,
          fontSize: AppDimens.homeCardBadge,
          fontWeight: FontWeight.w700,
          letterSpacing: 0,
        ),
      ),
    );
  }

  Widget _views() {
    return Container(
      key: Key('home-feed-views-${drama.id}'),
      padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 2),
      decoration: BoxDecoration(
        color: AppColors.playerOverlayPill,
        borderRadius: BorderRadius.circular(AppDimens.pillRadius),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          const Icon(
            Icons.play_arrow_rounded,
            size: AppDimens.homeCardMeta,
            color: AppColors.navSelected,
          ),
          const SizedBox(width: 1),
          Text(
            formatInteractionCount(drama.viewCount),
            style: const TextStyle(
              color: AppColors.navSelected,
              fontSize: AppDimens.homeCardMeta,
              fontWeight: FontWeight.w600,
              letterSpacing: 0,
            ),
          ),
        ],
      ),
    );
  }

  Widget _tags() {
    final tags = _cardTags();
    if (tags.isEmpty) return const SizedBox.shrink();
    return Row(
      children: [
        for (final (index, tag) in tags.indexed)
          Flexible(
            child: Padding(
              padding: EdgeInsets.only(
                right: index == tags.length - 1 ? 0 : AppDimens.spaceXs,
              ),
              child: Container(
                key: Key('home-feed-tag-${drama.id}-$index'),
                padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 2),
                decoration: BoxDecoration(
                  color: AppColors.contentSurface,
                  borderRadius: BorderRadius.circular(AppDimens.chipRadius),
                ),
                child: Text(
                  tag,
                  maxLines: 1,
                  overflow: TextOverflow.ellipsis,
                  style: const TextStyle(
                    color: AppColors.textSecondary,
                    fontSize: AppDimens.homeTagFont,
                    letterSpacing: 0,
                  ),
                ),
              ),
            ),
          ),
      ],
    );
  }

  List<String> _cardTags() {
    final seen = <String>{};
    return [drama.genre, drama.category]
        .expand((value) => value.split(_tagSplitter))
        .map((value) => value.trim())
        .where((value) => value.isNotEmpty && seen.add(value))
        .take(2)
        .toList(growable: false);
  }
}