import 'package:flutter/material.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';

import 'update_controller.dart';
import 'update_service.dart';

/// 前后台切换仅低频检查一次，网络失败或无新版本均静默结束。
abstract final class UpdateForegroundService {
  static DateTime? _lastCheck;
  static Future<void>? _running;
  static Future<void> check(BuildContext context, WidgetRef ref) {
    final now = DateTime.now();
    if (_lastCheck != null &&
        now.difference(_lastCheck!) < const Duration(minutes: 30)) {
      return Future.value();
    }
    return _running ??= _run(context, ref).whenComplete(() => _running = null);
  }

  static Future<void> _run(BuildContext context, WidgetRef ref) async {
    _lastCheck = DateTime.now();
    try {
      final info = await ref
          .read(updateControllerProvider.notifier)
          .checkUpgrade();
      if (context.mounted) {
        await UpdateService.showIfNeeded(
          context,
          ref,
          info,
          source: UpgradeCheckSource.automatic,
        );
      }
    } catch (_) {}
  }
}