import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:receive_sharing_intent/receive_sharing_intent.dart';
import '../../core/utils/logger.dart';
import '../providers/share_provider.dart';

/// 分享测试组件 - 用于验证分享接收功能
/// 显示当前分享状态和待处理文件信息
class ShareTestWidget extends ConsumerWidget {
  const ShareTestWidget({super.key});

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final shareState = ref.watch(shareProvider);

    return Card(
      margin: const EdgeInsets.all(16),
      child: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          mainAxisSize: MainAxisSize.min,
          children: [
            // 标题
            Text(
              '分享接收测试',
              style: Theme.of(context).textTheme.titleLarge?.copyWith(
                fontWeight: FontWeight.bold,
              ),
            ),
            const SizedBox(height: 16),

            // 分享状态显示
            _buildShareStatus(context, shareState),
            const SizedBox(height: 16),

            // 批量处理进度显示
            if (shareState.isBatchProcessing) ...[
              _buildBatchProgress(context, shareState),
              const SizedBox(height: 8),
              _buildBatchInfo(context, shareState),
              const SizedBox(height: 16),
            ],

            // 待处理文件列表
            _buildPendingFilesList(context, shareState),
            const SizedBox(height: 16),

            // 操作按钮
            _buildActionButtons(context, ref, shareState),

            // 错误信息显示
            if (shareState.error != null) ...[
              const SizedBox(height: 16),
              _buildErrorDisplay(context, shareState.error!, ref),
            ],
          ],
        ),
      ),
    );
  }

  /// 构建分享状态显示
  Widget _buildShareStatus(BuildContext context, ShareState shareState) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          '当前状态:',
          style: Theme.of(context).textTheme.titleMedium,
        ),
        const SizedBox(height: 8),
        Row(
          children: [
            Icon(
              shareState.isProcessing
                ? Icons.sync
                : shareState.hasPendingShare
                  ? Icons.notifications_active
                  : Icons.check_circle,
              color: shareState.isProcessing
                ? Colors.orange
                : shareState.hasPendingShare
                  ? Colors.blue
                  : Colors.green,
            ),
            const SizedBox(width: 8),
            Text(
              shareState.isProcessing
                ? '处理中...'
                : shareState.hasPendingShare
                  ? '有待处理分享'
                  : '无待处理分享',
              style: Theme.of(context).textTheme.bodyMedium,
            ),
          ],
        ),
        const SizedBox(height: 4),
        Text(
          '文件数量: ${shareState.pendingFiles.length}',
          style: Theme.of(context).textTheme.bodySmall?.copyWith(
            color: Theme.of(context).colorScheme.onSurface.withOpacity(0.6),
          ),
        ),
      ],
    );
  }

  /// 构建待处理文件列表
  Widget _buildPendingFilesList(BuildContext context, ShareState shareState) {
    if (shareState.pendingFiles.isEmpty) {
      return Text(
        '暂无待处理文件',
        style: Theme.of(context).textTheme.bodyMedium?.copyWith(
          color: Theme.of(context).colorScheme.onSurface.withOpacity(0.6),
        ),
      );
    }

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          '待处理文件:',
          style: Theme.of(context).textTheme.titleMedium,
        ),
        const SizedBox(height: 8),
        ...shareState.pendingFiles.map((file) => _buildFileItem(context, file)),
      ],
    );
  }

  /// 构建文件项
  Widget _buildFileItem(BuildContext context, SharedMediaFile file) {
    return Container(
      margin: const EdgeInsets.only(bottom: 8),
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Theme.of(context).colorScheme.surfaceVariant.withOpacity(0.5),
        borderRadius: BorderRadius.circular(8),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              Icon(
                _getFileIcon(file.type),
                size: 24,
                color: Theme.of(context).colorScheme.primary,
              ),
              const SizedBox(width: 12),
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      _getFileName(file.path),
                      style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                        fontWeight: FontWeight.w500,
                      ),
                      maxLines: 1,
                      overflow: TextOverflow.ellipsis,
                    ),
                    const SizedBox(height: 2),
                    Text(
                      file.path,
                      style: Theme.of(context).textTheme.bodySmall?.copyWith(
                        color: Theme.of(context).colorScheme.onSurface.withOpacity(0.6),
                      ),
                      maxLines: 2,
                      overflow: TextOverflow.ellipsis,
                    ),
                  ],
                ),
              ),
            ],
          ),
          const SizedBox(height: 4),
          Text(
            '类型: ${_getFileType(file.type)}',
            style: Theme.of(context).textTheme.bodySmall?.copyWith(
              color: Theme.of(context).colorScheme.onSurface.withOpacity(0.7),
            ),
          ),
        ],
      ),
    );
  }

  /// 构建操作按钮
  Widget _buildActionButtons(BuildContext context, WidgetRef ref, ShareState shareState) {
    return Row(
      children: [
        ElevatedButton.icon(
          onPressed: shareState.hasPendingShare && !shareState.isProcessing
            ? () => _handleSaveShare(ref)
            : null,
          icon: const Icon(Icons.save),
          label: const Text('保存分享'),
          style: ElevatedButton.styleFrom(
            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
          ),
        ),
        const SizedBox(width: 12),
        OutlinedButton.icon(
          onPressed: shareState.hasPendingShare && !shareState.isProcessing
            ? () => _handleClearShare(ref)
            : null,
          icon: const Icon(Icons.clear),
          label: const Text('清除'),
        ),
        const SizedBox(width: 12),
        OutlinedButton.icon(
          onPressed: !shareState.isProcessing
            ? () => _handleRefreshShare(ref)
            : null,
          icon: const Icon(Icons.refresh),
          label: const Text('刷新'),
        ),
        const SizedBox(width: 12),
        OutlinedButton.icon(
          onPressed: !shareState.isProcessing
            ? () => _simulateShareTest(ref)
            : null,
          icon: const Icon(Icons.photo),
          label: const Text('模拟分享'),
        ),
      ],
    );
  }

  /// 构建错误信息显示
  Widget _buildErrorDisplay(BuildContext context, String error, WidgetRef ref) {
    return Container(
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Theme.of(context).colorScheme.errorContainer,
        borderRadius: BorderRadius.circular(8),
      ),
      child: Row(
        children: [
          Icon(
            Icons.error_outline,
            color: Theme.of(context).colorScheme.error,
          ),
          const SizedBox(width: 8),
          Expanded(
            child: Text(
              error,
              style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                color: Theme.of(context).colorScheme.error,
              ),
            ),
          ),
          IconButton(
            onPressed: () => _handleClearError(ref),
            icon: Icon(
              Icons.close,
              color: Theme.of(context).colorScheme.error,
            ),
          ),
        ],
      ),
    );
  }

  /// 构建批量处理进度显示
  Widget _buildBatchProgress(BuildContext context, ShareState shareState) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          '批量处理进度:',
          style: Theme.of(context).textTheme.titleMedium,
        ),
        const SizedBox(height: 8),
        Row(
          children: [
            Expanded(
              child: LinearProgressIndicator(
                value: shareState.totalBatches > 0
                  ? shareState.currentBatchIndex / shareState.totalBatches
                  : 0,
                backgroundColor: Theme.of(context).colorScheme.surfaceVariant,
                valueColor: AlwaysStoppedAnimation<Color>(
                  Theme.of(context).colorScheme.primary,
                ),
              ),
            ),
            const SizedBox(width: 12),
            Text(
              '${shareState.currentBatchIndex}/${shareState.totalBatches}',
              style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                fontWeight: FontWeight.w500,
              ),
            ),
          ],
        ),
        const SizedBox(height: 4),
        Text(
          '第 ${shareState.currentBatchIndex} 批，共 ${shareState.totalBatches} 批',
          style: Theme.of(context).textTheme.bodySmall?.copyWith(
            color: Theme.of(context).colorScheme.onSurface.withOpacity(0.6),
          ),
        ),
      ],
    );
  }

  /// 构建批量处理信息
  Widget _buildBatchInfo(BuildContext context, ShareState shareState) {
    final remainingBatches = shareState.totalBatches - shareState.currentBatchIndex;
    final progressPercent = shareState.totalBatches > 0
        ? (shareState.currentBatchIndex / shareState.totalBatches * 100).toStringAsFixed(1)
        : '0.0';

    return Container(
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Theme.of(context).colorScheme.primaryContainer.withOpacity(0.3),
        borderRadius: BorderRadius.circular(8),
        border: Border.all(
          color: Theme.of(context).colorScheme.primary.withOpacity(0.3),
          width: 1,
        ),
      ),
      child: Row(
        children: [
          Icon(
            Icons.batch_prediction,
            color: Theme.of(context).colorScheme.primary,
            size: 20,
          ),
          const SizedBox(width: 8),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  '批量保存模式',
                  style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                    fontWeight: FontWeight.w500,
                    color: Theme.of(context).colorScheme.primary,
                  ),
                ),
                const SizedBox(height: 2),
                Text(
                  '进度: $progressPercent% (${shareState.currentBatchIndex}/${shareState.totalBatches} 批次)',
                  style: Theme.of(context).textTheme.bodySmall?.copyWith(
                    color: Theme.of(context).colorScheme.onSurface.withOpacity(0.7),
                  ),
                ),
                if (remainingBatches > 0) ...[
                  const SizedBox(height: 2),
                  Text(
                    '剩余 $remainingBatches 批次待处理',
                    style: Theme.of(context).textTheme.bodySmall?.copyWith(
                      color: Theme.of(context).colorScheme.onSurface.withOpacity(0.6),
                    ),
                  ),
                ],
              ],
            ),
          ),
        ],
      ),
    );
  }

  /// 获取文件图标
  IconData _getFileIcon(SharedMediaType type) {
    switch (type) {
      case SharedMediaType.image:
        return Icons.image;
      case SharedMediaType.video:
        return Icons.videocam;
      case SharedMediaType.file:
        return Icons.insert_drive_file;
      default:
        return Icons.description;
    }
  }

  /// 获取文件类型描述
  String _getFileType(SharedMediaType type) {
    switch (type) {
      case SharedMediaType.image:
        return '图片';
      case SharedMediaType.video:
        return '视频';
      case SharedMediaType.file:
        return '文件';
      default:
        return '未知';
    }
  }

  /// 获取文件名
  String _getFileName(String filePath) {
    return filePath.split('/').last;
  }

  /// 处理保存分享
  void _handleSaveShare(WidgetRef ref) {
    Logger.info('用户点击保存分享');
    final shareNotifier = ref.read(shareProvider.notifier);
    shareNotifier.startSavingSharedImages();
  }

  /// 处理清除分享
  void _handleClearShare(WidgetRef ref) {
    Logger.info('用户点击清除分享');
    final shareNotifier = ref.read(shareProvider.notifier);
    shareNotifier.cancelShareSaving();
  }

  /// 处理刷新分享
  void _handleRefreshShare(WidgetRef ref) {
    Logger.info('用户点击刷新分享');
    final shareNotifier = ref.read(shareProvider.notifier);
    shareNotifier.refreshShareStatus();
  }

  /// 处理清除错误
  void _handleClearError(WidgetRef ref) {
    final shareNotifier = ref.read(shareProvider.notifier);
    shareNotifier.clearError();
  }

  /// 模拟分享测试 - 创建模拟的分享数据来测试保存对话框
  void _simulateShareTest(WidgetRef ref) {
    Logger.info('用户点击模拟分享测试');

    // 创建模拟的分享文件
    final mockFiles = [
      SharedMediaFile(
        path: 'test://image1.jpg',
        type: SharedMediaType.image,
      ),
      SharedMediaFile(
        path: 'test://image2.png',
        type: SharedMediaType.image,
      ),
    ];

    // 模拟接收到分享文件
    final shareNotifier = ref.read(shareProvider.notifier);
    shareNotifier.handleSharedFiles(mockFiles);

    Logger.info('模拟分享测试完成，创建了${mockFiles.length}个测试文件');
  }
}