// file_utils.dart
import 'dart:async';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:file_picker/file_picker.dart';
import 'package:win_text_editor/framework/controllers/logger.dart';

class FileUtils {
  static Future<String?> pickFile(BuildContext context) async {
    try {
      final result = await FilePicker.platform.pickFiles(type: FileType.any, allowMultiple: false);
      return result?.files.single.path;
    } catch (e) {
      Logger().error('选择文件失败: ${e.toString()}');
      if (context.mounted) {
        ScaffoldMessenger.of(
          context,
        ).showSnackBar(SnackBar(content: Text('选择文件失败: ${e.toString()}')));
      }
      return null;
    }
  }

  static Future<String?> readFileContent(
    BuildContext context,
    String filePath, {
    Duration timeout = const Duration(seconds: 30),
  }) async {
    try {
      final content = await File(filePath).readAsString().timeout(
        timeout,
        onTimeout: () {
          throw TimeoutException('文件加载超时，可能文件过大');
        },
      );
      return content;
    } on FormatException {
      if (context.mounted) {
        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('这不是可读的文本文件')));
      }
      return null;
    } on FileSystemException catch (e) {
      if (context.mounted) {
        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('文件访问错误: ${e.message}')));
      }
      return null;
    } catch (e) {
      Logger().error('读取文件失败: ${e.toString()}');
      if (context.mounted) {
        ScaffoldMessenger.of(
          context,
        ).showSnackBar(SnackBar(content: Text('读取失败: ${e.toString()}')));
      }
      return null;
    }
  }

  // 移除showLoadingDialog方法，因为现在直接在调用处处理
}