import 'dart:io';
import 'dart:typed_data';
import 'dart:ui' as ui;
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:food_hub_app/widgets/common/index.dart';
import 'package:path_provider/path_provider.dart';
import 'package:share_plus/share_plus.dart';

/// 截图工具类
class ScreenshotUtil {
  // 截图功能
  static Future<Uint8List?> captureRecipeImage({
    required GlobalKey globalKey,
    double pixelRatio = 3.0,
    Duration delay = const Duration(milliseconds: 50),
  }) async {
    // 等待一帧确保UI已渲染
    await Future.delayed(delay);
    final RenderObject? render = globalKey.currentContext!.findRenderObject();
    final RenderRepaintBoundary boundary = render as RenderRepaintBoundary;
    final ui.Image image = await boundary.toImage(pixelRatio: pixelRatio);
    final ByteData? byteData = await image.toByteData(
      format: ui.ImageByteFormat.png,
    );

    return byteData?.buffer.asUint8List();
  }

  // 保存图片到临时文件
  static Future<File> saveImageToFile(Uint8List bytes, String fileName) async {
    final directory = await getTemporaryDirectory();
    final File imageFile = File('${directory.path}/$fileName');
    await imageFile.writeAsBytes(bytes);
    return imageFile;
  }

  static Future<void> captureAndShare({
    required GlobalKey globalKey,
    required String fileName,
    required String shareText,
  }) async {
    try {
      final imageBytes = await captureRecipeImage(globalKey: globalKey);

      if (imageBytes != null) {
        final imageFile = await saveImageToFile(imageBytes, fileName);
        await SharePlus.instance.share(
          ShareParams(files: [XFile(imageFile.path)], text: shareText),
        );

        // 分享后删除临时文件
        await imageFile.delete();
      } else {
        showErrorToast('生成图片失败，请重试');
      }
    } catch (e) {
      showErrorToast('分享失败: $e');
    }
  }
}