import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../../core/constants/app_colors.dart';
import '../../../core/constants/app_typography.dart';

class ShareScreen extends ConsumerStatefulWidget {
  const ShareScreen({super.key});

  @override
  ConsumerState<ShareScreen> createState() => _ShareScreenState();
}

class _ShareScreenState extends ConsumerState<ShareScreen> {
  String? _shareCode;
  bool _isScanning = false;
  
  @override
  Widget build(BuildContext context) {
    final isDark = Theme.of(context).brightness == Brightness.dark;
    
    return Scaffold(
      backgroundColor: isDark ? AppColors.darkBackground : AppColors.lightBackground,
      appBar: AppBar(
        title: const Text('리스트 공유'),
        backgroundColor: isDark ? AppColors.darkPrimary : AppColors.lightPrimary,
        foregroundColor: Colors.white,
        elevation: 0,
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16),
        child: Column(
          children: [
            // 공유받기 섹션
            Card(
              color: isDark ? AppColors.darkSurface : AppColors.lightSurface,
              elevation: 2,
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(16),
              ),
              child: Padding(
                padding: const EdgeInsets.all(24),
                child: Column(
                  children: [
                    Container(
                      padding: const EdgeInsets.all(16),
                      decoration: BoxDecoration(
                        color: AppColors.lightPrimary.withOpacity(0.1),
                        shape: BoxShape.circle,
                      ),
                      child: const Icon(
                        Icons.download_rounded,
                        size: 48,
                        color: AppColors.lightPrimary,
                      ),
                    ),
                    const SizedBox(height: 16),
                    Text(
                      '리스트 공유받기',
                      style: AppTypography.heading2(isDark),
                    ),
                    const SizedBox(height: 8),
                    Text(
                      '다른 사람의 맛집 리스트를 받아보세요',
                      style: AppTypography.body2(isDark),
                      textAlign: TextAlign.center,
                    ),
                    const SizedBox(height: 20),
                    if (_shareCode != null) ...[
                      Container(
                        padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 16),
                        decoration: BoxDecoration(
                          color: AppColors.lightPrimary.withOpacity(0.1),
                          borderRadius: BorderRadius.circular(12),
                          border: Border.all(
                            color: AppColors.lightPrimary.withOpacity(0.3),
                            width: 2,
                          ),
                        ),
                        child: Text(
                          _shareCode!,
                          style: const TextStyle(
                            fontSize: 36,
                            fontWeight: FontWeight.bold,
                            letterSpacing: 6,
                            color: AppColors.lightPrimary,
                          ),
                        ),
                      ),
                      const SizedBox(height: 12),
                      Text(
                        '이 코드를 상대방에게 알려주세요',
                        style: AppTypography.caption(isDark),
                      ),
                      const SizedBox(height: 16),
                      TextButton.icon(
                        onPressed: () {
                          setState(() {
                            _shareCode = null;
                          });
                        },
                        icon: const Icon(Icons.close),
                        label: const Text('취소'),
                        style: TextButton.styleFrom(
                          foregroundColor: AppColors.lightError,
                        ),
                      ),
                    ] else
                      ElevatedButton.icon(
                        onPressed: _generateShareCode,
                        icon: const Icon(Icons.qr_code),
                        label: const Text('공유 코드 생성'),
                        style: ElevatedButton.styleFrom(
                          backgroundColor: AppColors.lightPrimary,
                          foregroundColor: Colors.white,
                          padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 12),
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(8),
                          ),
                        ),
                      ),
                  ],
                ),
              ),
            ),
            
            const SizedBox(height: 16),
            
            // 공유하기 섹션
            Card(
              color: isDark ? AppColors.darkSurface : AppColors.lightSurface,
              elevation: 2,
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(16),
              ),
              child: Padding(
                padding: const EdgeInsets.all(24),
                child: Column(
                  children: [
                    Container(
                      padding: const EdgeInsets.all(16),
                      decoration: BoxDecoration(
                        color: AppColors.lightSecondary.withOpacity(0.1),
                        shape: BoxShape.circle,
                      ),
                      child: const Icon(
                        Icons.upload_rounded,
                        size: 48,
                        color: AppColors.lightSecondary,
                      ),
                    ),
                    const SizedBox(height: 16),
                    Text(
                      '내 리스트 공유하기',
                      style: AppTypography.heading2(isDark),
                    ),
                    const SizedBox(height: 8),
                    Text(
                      '내 맛집 리스트를 다른 사람과 공유하세요',
                      style: AppTypography.body2(isDark),
                      textAlign: TextAlign.center,
                    ),
                    const SizedBox(height: 20),
                    if (_isScanning) ...[
                      const CircularProgressIndicator(
                        color: AppColors.lightSecondary,
                      ),
                      const SizedBox(height: 16),
                      Text(
                        '주변 기기를 검색 중...',
                        style: AppTypography.caption(isDark),
                      ),
                      const SizedBox(height: 16),
                      TextButton.icon(
                        onPressed: () {
                          setState(() {
                            _isScanning = false;
                          });
                        },
                        icon: const Icon(Icons.stop),
                        label: const Text('스캔 중지'),
                        style: TextButton.styleFrom(
                          foregroundColor: AppColors.lightError,
                        ),
                      ),
                    ] else
                      ElevatedButton.icon(
                        onPressed: () {
                          setState(() {
                            _isScanning = true;
                          });
                        },
                        icon: const Icon(Icons.radar),
                        label: const Text('주변 기기 스캔'),
                        style: ElevatedButton.styleFrom(
                          backgroundColor: AppColors.lightSecondary,
                          foregroundColor: Colors.white,
                          padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 12),
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(8),
                          ),
                        ),
                      ),
                  ],
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }
  
  void _generateShareCode() {
    // TODO: 실제 구현 시 랜덤 코드 생성
    setState(() {
      _shareCode = '123456';
    });
  }
}