import 'package:get/get.dart';
import '../../../data/models/goods.dart';
import '../../../data/services/network/api.dart';
import 'goods_base_controller.dart';

class GoodsvipController extends GoodsBaseController {
  /// 会员与算力状态（`user_getcompute`），页面顶部 VIP 卡片下展示。
  /// 服务端已把自购与设备赋予的 VIP 合并好、算力也拆好了来源，这里**不做任何换算**。
  final compute = Rxn<Map<String, dynamic>>();

  @override
  void onInit() {
    super.onInit();
    refreshCompute();
  }

  Future<void> refreshCompute() async {
    try {
      final resp = await Api.getCompute();
      if (resp is Map) compute.value = Map<String, dynamic>.from(resp);
    } catch (_) {
      // 展示项，拿不到就不显示
    }
  }

  /// 「设备 N + 账户 M」形式的算力摘要；没数据返回 null。
  String? get computeSummary {
    final c = compute.value?['compute'];
    if (c is! Map) return null;
    final dev = (c['deviceleft'] as num?)?.toInt() ?? 0;
    final usr = (c['userbalance'] as num?)?.toInt() ?? 0;
    return 'computeSummary'.trParams({'device': '$dev', 'user': '$usr'});
  }

  /// 需要提示「VIP 快到期了」吗：剩余天数 ≤ 后台配的阈值（阈值为 0 = 后台关掉了这个提示）。
  /// 判定用服务端下发的 vipwarndays，客户端不自己拍数字——运营改阈值不用发版。
  bool get vipExpiringSoon {
    final v = compute.value?['vip'];
    final r = compute.value?['rates'];
    if (v is! Map || r is! Map) return false;
    final days = (r['vipwarndays'] as num?)?.toInt() ?? 0;
    if (days <= 0) return false;
    final exp = (v['exptime'] as num?)?.toInt() ?? 0;
    if (exp <= 0) return false;
    final left = exp - DateTime.now().millisecondsSinceEpoch ~/ 1000;
    return left > 0 && left <= days * 86400;
  }

  /// VIP 剩余天数（向上取整，至少 1）；无 VIP 或已过期返回 0。
  int get vipDaysLeft {
    final v = compute.value?['vip'];
    if (v is! Map) return 0;
    final exp = (v['exptime'] as num?)?.toInt() ?? 0;
    final left = exp - DateTime.now().millisecondsSinceEpoch ~/ 1000;
    if (left <= 0) return 0;
    return (left / 86400).ceil();
  }

  /// 需要提示「算力不多了」吗：剩余总量 ≤ 后台配的阈值（阈值 0 = 不提示）。
  bool get computeLow {
    final c = compute.value?['compute'];
    final r = compute.value?['rates'];
    if (c is! Map || r is! Map) return false;
    final warn = (r['computewarn'] as num?)?.toInt() ?? 0;
    if (warn <= 0) return false;
    final left = ((c['deviceleft'] as num?)?.toInt() ?? 0) + ((c['userbalance'] as num?)?.toInt() ?? 0);
    return left <= warn;
  }

  /// 当前 VIP 是否来自设备（用于副标题标注来源）。
  bool get vipFromDevice {
    final v = compute.value?['vip'];
    if (v is! Map) return false;
    final self = (v['selfexptime'] as num?)?.toInt() ?? 0;
    final exp = (v['exptime'] as num?)?.toInt() ?? 0;
    final level = (v['level'] as num?)?.toInt() ?? 0;
    return level > 0 && exp > self;
  }

  @override
  Future<List<DBGoods>> fetchProducts() async {
    // 2026-09 起在售的只有 VIP 时长与算力包；AI/Meet/Translation 是旧资源点包，
    // 仍然拉取是为了让还挂在架上的存量商品能买（发货时会折成算力），但不再新建。
    final types = [
      UsageType.Vip,
      UsageType.Compute,
      UsageType.AI,
      UsageType.Meet,
      UsageType.Translation,
    ];
    final Map<String, DBGoods> all = {};
    for (final t in types) {
      final resp = await Api.getGoods({'usagetype': t.toInt});
      if (resp == null || resp is! Map) continue;
      if (resp.containsKey('error') || resp.containsKey('msg')) {
        final msg = resp['error'] ?? resp['msg'] ?? '服务器错误';
        throw Exception(msg);
      }
      final container =
          (resp is Map && resp['data'] is Map) ? resp['data'] : resp;
      final data = (container is Map)
          ? (container['goodss'] ?? container['goodes'] ?? container['goods'])
          : null;
      if (data is List) {
        final list = data
            .whereType<Map<String, dynamic>>()
            .map(DBGoods.fromJson)
            .toList();
        for (final g in list) {
          all[g.id] = g;
        }
      }
    }
    return all.values.toList();
  }

  // Future<void> purchase(DBGoods item) async => super.purchase(item);
}