/// 时间: 2025-03-22
/// 功能: 诗词页面通用组件和工具函数
/// 介绍: 从 home_page.dart 和 home_part.dart 中提取的公共组件，用于代码复用和简化

import 'dart:io';
import 'dart:ui' as ui;
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:path_provider/path_provider.dart';
import 'package:share_plus/share_plus.dart';
import '../../constants/app_constants.dart';
import '../../utils/http/poetry_api.dart';
import 'home-load.dart';

/// 加载状态组件
class LoadingWidget extends StatelessWidget {
  const LoadingWidget({super.key});

  @override
  Widget build(BuildContext context) {
    return const Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          CircularProgressIndicator(
            valueColor: AlwaysStoppedAnimation<Color>(
              AppConstants.primaryColor,
            ),
          ),
          SizedBox(height: 16),
          Text(
            '加载中...',
            style: TextStyle(fontSize: 16, color: const Color(0xFF757575)),
          ),
        ],
      ),
    );
  }
}

/// 截图和分享工具类
class ShareImageUtils {
  /// 将 Widget 截图并分享
  static Future<void> captureAndShare(
    BuildContext context,
    GlobalKey repaintKey, {
    String? subject,
  }) async {
    try {
      PoetryStateManager.showSnackBar(
        context,
        '正在生成图片...',
        backgroundColor: AppConstants.primaryColor,
      );

      final boundary =
          repaintKey.currentContext?.findRenderObject()
              as RenderRepaintBoundary?;
      if (boundary == null) {
        if (context.mounted) {
          PoetryStateManager.showSnackBar(
            context,
            '生成图片失败',
            backgroundColor: AppConstants.errorColor,
          );
        }
        return;
      }

      ui.Image image = await boundary.toImage(pixelRatio: 3.0);
      ByteData? byteData = await image.toByteData(
        format: ui.ImageByteFormat.png,
      );

      if (byteData == null) {
        if (context.mounted) {
          PoetryStateManager.showSnackBar(
            context,
            '生成图片失败',
            backgroundColor: AppConstants.errorColor,
          );
        }
        return;
      }

      Uint8List pngBytes = byteData.buffer.asUint8List();

      final directory = await getTemporaryDirectory();
      final file = File(
        '${directory.path}/poetry_${DateTime.now().millisecondsSinceEpoch}.png',
      );
      await file.writeAsBytes(pngBytes);

      final result = await Share.shareXFiles([
        XFile(file.path),
      ], subject: subject ?? '诗词分享');

      if (result.status == ShareResultStatus.success) {
        if (context.mounted) {
          PoetryStateManager.showSnackBar(
            context,
            '分享成功！',
            backgroundColor: AppConstants.successColor,
          );
        }
      }
    } catch (e) {
      if (context.mounted) {
        PoetryStateManager.showSnackBar(
          context,
          '分享失败：${e.toString().substring(0, e.toString().length > 50 ? 50 : e.toString().length)}',
          backgroundColor: AppConstants.errorColor,
        );
      }
    }
  }
}

/// 错误状态组件
class CustomErrorWidget extends StatelessWidget {
  final String errorMessage;
  final VoidCallback onRetry;

  const CustomErrorWidget({
    super.key,
    required this.errorMessage,
    required this.onRetry,
  });

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Icon(Icons.error_outline, size: 64, color: Colors.grey[400]),
          const SizedBox(height: 16),
          Text(
            errorMessage,
            style: const TextStyle(fontSize: 16, color: Colors.grey),
            textAlign: TextAlign.center,
          ),
          const SizedBox(height: 16),
          ElevatedButton(
            onPressed: onRetry,
            style: ElevatedButton.styleFrom(
              backgroundColor: AppConstants.primaryColor,
            ),
            child: const Text('重试'),
          ),
        ],
      ),
    );
  }
}

/// 空状态组件
class EmptyWidget extends StatelessWidget {
  const EmptyWidget({super.key});

  @override
  Widget build(BuildContext context) {
    return const Center(
      child: Text('暂无诗词内容', style: TextStyle(fontSize: 16, color: Colors.grey)),
    );
  }
}

/// 诗词状态管理工具类
class PoetryStateManager {
  static void setLoadingState(VoidCallback setState, bool loading) {
    setState();
  }

  static void setErrorState(VoidCallback setState, String error) {
    setState();
  }

  static void setSuccessState(VoidCallback setState, PoetryData data) {
    setState();
  }

  static String formatErrorMessage(String error) {
    return error.toString().contains('HttpException')
        ? error.toString().replaceAll('HttpException: ', '')
        : '获取诗词失败';
  }

  static void showSnackBar(
    BuildContext context,
    String message, {
    Color? backgroundColor,
    Duration? duration,
  }) {
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(
        content: Text(message),
        backgroundColor: backgroundColor ?? AppConstants.successColor,
        duration: duration ?? const Duration(seconds: 2),
      ),
    );
  }

  static void triggerHapticFeedback() {
    HapticFeedback.lightImpact();
  }

  static void triggerHapticFeedbackMedium() {
    HapticFeedback.mediumImpact();
  }
}

/// 诗词数据工具类
class PoetryDataUtils {
  static List<String> extractKeywords(PoetryData? poetryData) {
    return poetryData?.keywordList ?? [];
  }

  static String getStarDisplay(PoetryData? poetryData) {
    return poetryData?.starDisplay ?? '';
  }

  static String generateStars(int? starCount) {
    if (starCount == null) return '';
    final count = starCount > 5 ? 5 : starCount;
    if (count == 5) {
      return ' 🌟$count';
    } else {
      return ' ⭐$count';
    }
  }

  static String generateLikeText(int? likeCount) {
    if (likeCount == null) return '';
    return ' ❤️ $likeCount';
  }

  static String generateViewText(int? viewCount) {
    if (viewCount == null) return '';
    return ' 🔥 $viewCount';
  }

  static bool isValidPoetryData(PoetryData? poetryData) {
    return poetryData != null && poetryData.name.isNotEmpty;
  }
}

/// 动画工具类
class AnimationUtils {
  static AnimationController createFadeController(TickerProvider vsync) {
    return AnimationController(
      duration: AppConstants.animationDurationMedium,
      vsync: vsync,
    );
  }

  static AnimationController createSlideController(TickerProvider vsync) {
    return AnimationController(
      duration: AppConstants.animationDurationShort,
      vsync: vsync,
    );
  }

  static Animation<double> createFadeAnimation(AnimationController controller) {
    return CurvedAnimation(parent: controller, curve: Curves.easeIn);
  }

  static Animation<Offset> createSlideAnimation(
    AnimationController controller,
  ) {
    return Tween<Offset>(
      begin: const Offset(0.0, 0.3),
      end: Offset.zero,
    ).animate(CurvedAnimation(parent: controller, curve: Curves.easeOutCubic));
  }
}

/// 复制工具类
class CopyUtils {
  static void copyToClipboard(
    BuildContext context,
    String content,
    String contentType, {
    VoidCallback? onSuccess,
  }) {
    try {
      Clipboard.setData(ClipboardData(text: content));
      PoetryStateManager.showSnackBar(context, '已复制$contentType');
      DebugInfoManager().showCopySuccess();
      onSuccess?.call();
    } catch (e) {
      PoetryStateManager.showSnackBar(
        context,
        '复制失败',
        backgroundColor: AppConstants.errorColor,
      );
      DebugInfoManager().showCopyFailed();
    }
  }

  static void showCopyDialog(
    BuildContext context,
    String content,
    String contentType,
  ) {
    showDialog(
      context: context,
      builder: (context) => AlertDialog(
        title: Text('复制$contentType'),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              '受隐私权限约束，频繁写入剪切板需告知用户',
              style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w500),
            ),
            const SizedBox(height: 12),
            Text(
              '预览内容：',
              style: TextStyle(fontSize: 14, color: Colors.grey[600]),
            ),
            const SizedBox(height: 4),
            Container(
              width: double.infinity,
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: Colors.grey[100],
                borderRadius: BorderRadius.circular(4),
                border: Border.all(color: Colors.grey[300]!),
              ),
              child: Text(
                content.length > 50
                    ? '${content.substring(0, 50)}...'
                    : content,
                style: const TextStyle(fontSize: 12, color: Colors.black87),
              ),
            ),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Navigator.of(context).pop(),
            child: const Text('返回'),
          ),
          ElevatedButton(
            onPressed: () {
              Navigator.of(context).pop();
              copyToClipboard(context, content, contentType);
            },
            style: ElevatedButton.styleFrom(
              backgroundColor: AppConstants.primaryColor,
              foregroundColor: Colors.white,
            ),
            child: Text('复制$contentType'),
          ),
        ],
      ),
    );
  }
}

/// 悬浮分享按钮组件
class FloatingShareButton extends StatelessWidget {
  final VoidCallback onShare;

  const FloatingShareButton({super.key, required this.onShare});

  @override
  Widget build(BuildContext context) {
    return Container(
      width: 56,
      height: 56,
      decoration: BoxDecoration(
        color: AppConstants.secondaryColor,
        shape: BoxShape.circle,
        boxShadow: [
          BoxShadow(
            color: AppConstants.secondaryColor.withAlpha(76),
            blurRadius: 8,
            offset: const Offset(0, 4),
          ),
        ],
      ),
      child: Material(
        color: Colors.transparent,
        child: InkWell(
          borderRadius: BorderRadius.circular(28),
          onTap: () {
            HapticFeedback.lightImpact();
            onShare();
          },
          child: const Center(
            child: Icon(Icons.share, color: Colors.white, size: 28),
          ),
        ),
      ),
    );
  }
}

/// 统计信息卡片组件
class StatsCard extends StatelessWidget {
  final PoetryData poetryData;

  const StatsCard({super.key, required this.poetryData});

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16),
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withAlpha(5),
            blurRadius: 5,
            offset: const Offset(0, 1),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        mainAxisSize: MainAxisSize.min,
        children: [
          Text(
            '统计信息',
            style: TextStyle(
              fontSize: 16,
              fontWeight: FontWeight.bold,
              color: AppConstants.primaryColor,
            ),
          ),
          const SizedBox(height: 12),
          Row(
            children: [
              _buildStatItem('今日', poetryData.hitsDay.toString()),
              const SizedBox(width: 20),
              _buildStatItem('本月', poetryData.hitsMonth.toString()),
              const SizedBox(width: 20),
              _buildStatItem('总计', poetryData.hitsTotal.toString()),
            ],
          ),
        ],
      ),
    );
  }

  Widget _buildStatItem(String label, String value) {
    return Expanded(
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Text(
            value,
            style: const TextStyle(
              fontSize: 18,
              fontWeight: FontWeight.bold,
              color: Colors.black87,
            ),
          ),
          const SizedBox(height: 4),
          Text(label, style: const TextStyle(fontSize: 12, color: Colors.grey)),
        ],
      ),
    );
  }
}