import 'dart:typed_data';

import 'package:flutter_oss_aliyun/flutter_oss_aliyun.dart';

class OSSManager {
  // 静态单例实例
  static final OSSManager _instance = OSSManager._internal();
  bool isInit = false;
  // 工厂构造函数，返回单例实例
  factory OSSManager() {
    return _instance;
  }

  // 私有构造函数，防止外部直接实例化
  OSSManager._internal();

  void init(String stsUrl, String ossEndpoint, String bucketName) {
    // 初始化
    Client.init(
      stsUrl: stsUrl,
      ossEndpoint: ossEndpoint,
      bucketName: bucketName,
    );
    isInit = true;
  }

  Future<String> uploadFile(Uint8List fileData, String objectName, {Function(int count, int total)? onSendProgress,
    Function(int count, int total)? onReceiveProgress}) async {
    if (!isInit) {
      throw Exception("请先初始化");
    }
    final result = await Client().putObject(fileData, objectName, option: PutRequestOption(
        onSendProgress: onSendProgress != null ? (count, total) {
          onSendProgress(count, total);
        } : null,
        onReceiveProgress: onReceiveProgress != null ? (count, total) {
          onReceiveProgress(count, total);
        } : null,
        override: false,
        aclModel: AclMode.publicRead,
        storageType: StorageType.ia,
      ),
    );
    return result.statusCode == 200 ? result.realUri.path : throw Exception("上传失败");
  }
}