import 'dart:io';
import 'package:crypto/crypto.dart';
import 'package:flutter_image_compress/flutter_image_compress.dart';

import 'log_utils.dart';

String getFileExtension(String fileName) {
  if (fileName.contains('.')) {
    return '.${fileName.split('.').last.toLowerCase()}';
  }
  return '';
}

Future<String> generateMD5HashName(String filePath) async {
  final file = File(filePath);
  final bytes = await file.readAsBytes();
  final hash = md5.convert(bytes);
  return hash.toString();
}

// 图片压缩方法
Future<File> compressImage(File file) async {
  try {
    // 获取压缩后的文件路径
    final result = await FlutterImageCompress.compressAndGetFile(
      file.absolute.path,
      '${file.parent.path}/compressed_${DateTime.now().millisecondsSinceEpoch}.jpg',
      minWidth: 800,
      minHeight: 600,
      quality: 70,
      format: CompressFormat.jpeg,
    );

    if (result == null) {
      throw Exception('图片压缩失败');
    }

    return File(result.path);
  } catch (e) {
    logger.e('图片压缩失败，使用原文件: $e');
    return file;
  }
}

// 检查是否为图片文件
bool isImageFile(String fileName) {
  final imageExtensions = ['.jpg', '.jpeg', '.png', '.gif', '.bmp', '.webp'];
  final extension = fileName.toLowerCase().substring(fileName.lastIndexOf('.'));
  return imageExtensions.contains(extension);
}