import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

import '../../domain/bracket.dart';

/// Compact card representing a single [BracketMatch] inside the bracket tree.
///
/// Fixed 200x80 footprint so the bracket tree can lay matches out with
/// predictable geometry. If the match is scheduled, an additional date line
/// is rendered directly beneath the card.
class MatchCard extends StatelessWidget {
  const MatchCard({
    super.key,
    required this.match,
    this.width = 200,
    this.height = 80,
  });

  final BracketMatch match;
  final double width;
  final double height;

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final scheme = theme.colorScheme;

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      mainAxisSize: MainAxisSize.min,
      children: [
        Container(
          width: width,
          height: height,
          decoration: BoxDecoration(
            color: scheme.surface,
            borderRadius: BorderRadius.circular(10),
            border: Border.all(color: scheme.outlineVariant),
          ),
          clipBehavior: Clip.antiAlias,
          child: Column(
            children: [
              Expanded(
                child: _TeamRow(
                  team: match.teamA,
                  score: match.scoreA,
                  isWinner: match.isTeamAWinner,
                ),
              ),
              Divider(height: 1, thickness: 1, color: scheme.outlineVariant),
              Expanded(
                child: _TeamRow(
                  team: match.teamB,
                  score: match.scoreB,
                  isWinner: match.isTeamBWinner,
                ),
              ),
            ],
          ),
        ),
        const SizedBox(height: 4),
        _StatusLine(match: match, width: width),
      ],
    );
  }
}

class _TeamRow extends StatelessWidget {
  const _TeamRow({
    required this.team,
    required this.score,
    required this.isWinner,
  });

  final BracketTeam? team;
  final int? score;
  final bool isWinner;

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final scheme = theme.colorScheme;
    final name = team?.name ?? 'TBD';
    final nameStyle = theme.textTheme.bodyMedium?.copyWith(
      fontWeight: isWinner ? FontWeight.w700 : FontWeight.w500,
      color: team == null
          ? scheme.onSurfaceVariant
          : (isWinner ? scheme.onPrimaryContainer : scheme.onSurface),
      fontStyle: team == null ? FontStyle.italic : FontStyle.normal,
    );
    final scoreStyle = theme.textTheme.titleMedium?.copyWith(
      fontWeight: isWinner ? FontWeight.w800 : FontWeight.w600,
      color: isWinner ? scheme.onPrimaryContainer : scheme.onSurface,
    );

    return Container(
      color: isWinner ? scheme.primaryContainer : null,
      padding: const EdgeInsets.symmetric(horizontal: 10),
      child: Row(
        children: [
          Expanded(
            child: Text(
              name,
              maxLines: 1,
              overflow: TextOverflow.ellipsis,
              style: nameStyle,
            ),
          ),
          const SizedBox(width: 8),
          SizedBox(
            width: 24,
            child: Text(
              score?.toString() ?? '',
              textAlign: TextAlign.right,
              style: scoreStyle,
            ),
          ),
        ],
      ),
    );
  }
}

class _StatusLine extends StatelessWidget {
  const _StatusLine({required this.match, required this.width});

  final BracketMatch match;
  final double width;

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final scheme = theme.colorScheme;
    final (Color dot, String label) = switch (match.status) {
      MatchStatus.completed => (Colors.green.shade600, 'Final'),
      MatchStatus.inProgress => (Colors.amber.shade700, 'Live'),
      MatchStatus.scheduled => (scheme.outline, _scheduledLabel(match)),
    };

    return SizedBox(
      width: width,
      child: Row(
        children: [
          Container(
            width: 8,
            height: 8,
            decoration: BoxDecoration(color: dot, shape: BoxShape.circle),
          ),
          const SizedBox(width: 6),
          Expanded(
            child: Text(
              label,
              maxLines: 1,
              overflow: TextOverflow.ellipsis,
              style: theme.textTheme.labelSmall?.copyWith(
                color: scheme.onSurfaceVariant,
                fontWeight: FontWeight.w600,
              ),
            ),
          ),
        ],
      ),
    );
  }

  static String _scheduledLabel(BracketMatch match) {
    final scheduled = match.scheduledAt;
    if (scheduled == null) return 'Scheduled';
    return DateFormat('MMM d  ·  h:mm a').format(scheduled);
  }
}