// 功能描述：充值先存后发和未确认订单保留；版本：1.0.0。
import 'package:flutter_test/flutter_test.dart';
import 'package:user_app/data/services/recharge_draft_store.dart';
import 'package:user_app/data/services/recharge_flow.dart';
import 'package:user_app/data/services/api_client.dart';
import 'package:user_app/domain/models/recharge.dart';
import '../support/a1_fixture.dart';

class _Store implements RechargeDraftStore {
  PendingRecharge? value;
  bool fail = false;
  @override
  Future<PendingRecharge?> read(String owner) async => value;
  @override
  Future<void> write(String owner, PendingRecharge draft) async {
    if (fail) throw StateError('存储失败');
    value = draft;
  }

  @override
  Future<void> delete(String owner) async {
    value = null;
  }
}

class _Repo extends A1FixtureRepository {
  _Repo(this.store);
  final _Store store;
  int calls = 0, status = 10;
  int? queryError;
  String owner = 'api#alice';
  bool changeOwnerOnQuery = false;
  @override
  Future<String> rechargeDraftOwner() async => owner;
  @override
  Future<Map<String, Object?>> createRecharge({
    required String request,
    required int amount,
    required String channel,
    required String payType,
  }) async {
    expect(store.value?.request, request);
    calls++;
    throw StateError('响应丢失');
  }

  @override
  Future<RechargeRecord> rechargeResult(String request) async {
    if (changeOwnerOnQuery) owner = 'api#bob';
    if (queryError != null) throw ApiException(queryError!, '查询失败');
    return RechargeRecord(
      identity: 'order',
      number: request,
      amount: 100,
      status: status,
      channel: 'alipay',
      createdAt: DateTime(2026),
    );
  }
}

void main() {
  test('明确不存在可原号重发，网络错误和账号切换不能发单', () async {
    const draft = PendingRecharge(
      request: 'request-1',
      amount: 100,
      channel: 'alipay',
      payType: 'wap',
    );
    for (final code in [1112, 500]) {
      final store = _Store()..value = draft;
      final repo = _Repo(store)..queryError = code;
      final flow = RechargeFlow(repo, store);
      await expectLater(
        flow.create(draft),
        code == 1112
            ? throwsStateError
            : throwsA(isA<ApiException>().having((e) => e.code, '错误码', 500)),
      );
      expect(repo.calls, code == 1112 ? 1 : 0);
      expect(store.value?.request, draft.request);
    }
    final store = _Store()..value = draft;
    final repo = _Repo(store)..changeOwnerOnQuery = true;
    await expectLater(RechargeFlow(repo, store).create(draft), throwsStateError);
    expect(repo.calls, 0);
    expect(store.value, isNotNull);
  });
  test('存储失败不发单，响应丢失保留原请求，到账后才清除', () async {
    final store = _Store()..fail = true;
    final repo = _Repo(store);
    final flow = RechargeFlow(repo, store);
    const draft = PendingRecharge(
      request: 'request-1',
      amount: 100,
      channel: 'alipay',
      payType: 'wap',
    );
    await expectLater(flow.create(draft), throwsStateError);
    expect(repo.calls, 0);
    store.fail = false;
    await expectLater(flow.create(draft), throwsStateError);
    expect(repo.calls, 1);
    expect(store.value?.request, 'request-1');
    await expectLater(
      flow.create(
        const PendingRecharge(request: 'request-2', amount: 100, channel: 'alipay', payType: 'wap'),
      ),
      throwsStateError,
    );
    expect(repo.calls, 1);
    expect((await flow.recover())?.credited, isFalse);
    expect(store.value, isNotNull);
    repo.status = 23;
    expect(await flow.create(draft), {'recharge_status': 23});
    expect(repo.calls, 1);
    expect(store.value, isNotNull);
    expect((await flow.recover())?.credited, isTrue);
    expect(store.value, isNull);
  });
}