import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:term_remote_ctl/core/network/agent_api_client.dart';
import 'package:term_remote_ctl/features/pairing/pairing_controller.dart';

void main() {
  test('redeemCode updates state on success', () async {
    final client = _FakeAgentApiClient();
    final controller = PairingController(client);

    final future = controller.redeemCode('123456', 'tablet');

    expect(controller.state, const AsyncLoading<void>());
    await future;

    expect(client.redeemCalls, 1);
    expect(client.lastCode, '123456');
    expect(client.lastDeviceName, 'tablet');
    expect(controller.state, const AsyncData<void>(null));
  });

  test('redeemCode exposes api failures as AsyncError', () async {
    final client = _FakeAgentApiClient(shouldThrow: true);
    final controller = PairingController(client);

    final future = controller.redeemCode('123456', 'tablet');

    expect(controller.state, const AsyncLoading<void>());
    await future;

    expect(controller.state, isA<AsyncError<void>>());
  });
}

class _FakeAgentApiClient extends AgentApiClient {
  _FakeAgentApiClient({this.shouldThrow = false}) : super(Uri.parse('https://host:9443'));

  final bool shouldThrow;

  int redeemCalls = 0;
  String? lastCode;
  String? lastDeviceName;

  @override
  Future<void> redeemPairingCode({
    required String code,
    required String deviceName,
  }) async {
    redeemCalls += 1;
    lastCode = code;
    lastDeviceName = deviceName;

    if (shouldThrow) {
      throw StateError('boom');
    }
  }
}