import 'package:flutter/material.dart';

import 'package:asciineverdie/src/core/model/arena_match.dart';
import 'package:asciineverdie/src/core/model/combat_event.dart';
import 'package:asciineverdie/src/core/model/game_state.dart';
import 'package:asciineverdie/src/core/model/hall_of_fame.dart';
import 'package:asciineverdie/src/shared/animation/race_character_frames.dart';
import 'package:asciineverdie/src/shared/widgets/ascii_disintegrate_widget.dart';
import 'package:asciineverdie/src/features/game/widgets/ascii_animation_card.dart';
import 'package:asciineverdie/src/shared/retro_colors.dart';

/// 아레나 전투 영역 위젯 (Arena Battle Area)
///
/// 활성 전투 중 ASCII 애니메이션 표시, 종료 시 승자/패자 분기 처리
class ArenaBattleArea extends StatelessWidget {
  const ArenaBattleArea({
    super.key,
    required this.match,
    required this.isFinished,
    this.result,
    this.latestCombatEvent,
  });

  final ArenaMatch match;
  final bool isFinished;
  final ArenaMatchResult? result;
  final CombatEvent? latestCombatEvent;

  @override
  Widget build(BuildContext context) {
    if (isFinished && result != null) {
      return _buildFinishedArea(context);
    }
    return _buildActiveArea(context);
  }

  /// 방패 장착 여부 확인
  bool _hasShield(HallOfFameEntry entry) {
    final equipment = entry.finalEquipment;
    if (equipment == null) return false;
    return equipment.any((item) => item.slot.name == 'shield');
  }

  /// 활성 전투 영역 (기존 AsciiAnimationCard)
  Widget _buildActiveArea(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 8),
      child: SizedBox(
        height: 120,
        child: AsciiAnimationCard(
          taskType: TaskType.kill,
          raceId: match.challenger.raceId,
          shieldName: _hasShield(match.challenger) ? 'shield' : null,
          opponentRaceId: match.opponent.raceId,
          opponentHasShield: _hasShield(match.opponent),
          latestCombatEvent: latestCombatEvent,
        ),
      ),
    );
  }

  /// 종료된 전투 영역 (승자 유지 + 패자 분해)
  Widget _buildFinishedArea(BuildContext context) {
    final isVictory = result!.isVictory;
    final winnerRaceId = isVictory
        ? match.challenger.raceId
        : match.opponent.raceId;
    final loserRaceId = isVictory
        ? match.opponent.raceId
        : match.challenger.raceId;

    // 패자 캐릭터 프레임 (idle 첫 프레임)
    final loserFrameData =
        RaceCharacterFrames.get(loserRaceId) ??
        RaceCharacterFrames.defaultFrames;
    final loserLines = loserFrameData.idle.first.lines;

    // 승자 캐릭터 프레임 (idle 첫 프레임)
    final winnerFrameData =
        RaceCharacterFrames.get(winnerRaceId) ??
        RaceCharacterFrames.defaultFrames;
    final winnerLines = winnerFrameData.idle.first.lines;

    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 8),
      child: SizedBox(
        height: 120,
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
          children: [
            // 좌측: 도전자 (승자면 유지, 패자면 분해)
            Expanded(
              child: Center(
                child: isVictory
                    ? _buildStaticCharacter(context, winnerLines)
                    : AsciiDisintegrateWidget(
                        characterLines: _mirrorLines(loserLines),
                      ),
              ),
            ),
            // 중앙 VS
            Text(
              'VS',
              style: TextStyle(
                fontFamily: 'PressStart2P',
                fontSize: 14,
                color: RetroColors.goldOf(context).withValues(alpha: 0.5),
              ),
            ),
            // 우측: 상대 (승자면 유지, 패자면 분해)
            Expanded(
              child: Center(
                child: isVictory
                    ? AsciiDisintegrateWidget(characterLines: loserLines)
                    : _buildStaticCharacter(context, _mirrorLines(winnerLines)),
              ),
            ),
          ],
        ),
      ),
    );
  }

  /// 정적 ASCII 캐릭터 표시
  Widget _buildStaticCharacter(BuildContext context, List<String> lines) {
    final textColor = RetroColors.textPrimaryOf(context);
    return Column(
      mainAxisSize: MainAxisSize.min,
      children: lines
          .map(
            (line) => Text(
              line,
              style: TextStyle(
                fontFamily: 'JetBrainsMono',
                fontSize: 15,
                color: textColor,
                height: 1.2,
              ),
            ),
          )
          .toList(),
    );
  }

  /// ASCII 문자열 미러링 (좌우 대칭)
  static List<String> _mirrorLines(List<String> lines) {
    return lines.map((line) {
      final chars = line.split('');
      return chars.reversed.map(_mirrorChar).join();
    }).toList();
  }

  /// 개별 문자 미러링
  static String _mirrorChar(String char) {
    return switch (char) {
      '/' => r'\',
      r'\' => '/',
      '(' => ')',
      ')' => '(',
      '[' => ']',
      ']' => '[',
      '{' => '}',
      '}' => '{',
      '<' => '>',
      '>' => '<',
      'd' => 'b',
      'b' => 'd',
      'q' => 'p',
      'p' => 'q',
      _ => char,
    };
  }
}