flutterApp/lib/core/update/update_state.dart

import 'version_check_service.dart';

/// 更新状态基类
abstract class UpdateState {
  const UpdateState();
}

/// 初始状态
class UpdateInitial extends UpdateState {
  const UpdateInitial();
}

/// 检查中
class UpdateChecking extends UpdateState {
  const UpdateChecking();
}

/// 发现新版本
class UpdateAvailable extends UpdateState {
  final AppVersionInfo versionInfo;

  const UpdateAvailable(this.versionInfo);
}

/// 下载中
class UpdateDownloading extends UpdateState {
  final double progress;
  final bool isPatch; // true=差量补丁, false=完整APK

  const UpdateDownloading(this.progress, {required this.isPatch});
}

/// 清理版本号中
class UpdateClearingVersion extends UpdateState {
  const UpdateClearingVersion();
}

/// 准备安装
class UpdateReadyToInstall extends UpdateState {
  final String apkPath;

  const UpdateReadyToInstall(this.apkPath);
}

/// 安装中
class UpdateInstalling extends UpdateState {
  final bool isPatch;

  const UpdateInstalling({required this.isPatch});
}

/// 更新成功
class UpdateSuccess extends UpdateState {
  const UpdateSuccess();
}

/// 已是最新版本
class UpdateUpToDate extends UpdateState {
  const UpdateUpToDate();
}

/// 更新失败
class UpdateFailure extends UpdateState {
  final String error;

  const UpdateFailure(this.error);
}