import 'dart:convert';

import 'package:cyberhybridhub_server/alpaca/alpaca_assets_client.dart';
import 'package:cyberhybridhub_server/alpaca/alpaca_env.dart';
import 'package:cyberhybridhub_server/alpaca/alpaca_models.dart';
import 'package:http/http.dart' as http;
import 'package:test/test.dart';

import '../helpers/fixture_loader.dart';
import '../helpers/mock_http_client.dart';

void main() {
  late FixtureLoader fixtures;
  late AlpacaEnv env;

  setUp(() {
    fixtures = FixtureLoader();
    env = AlpacaEnv.fromMap(<String, String>{
      'ALPACA_API_KEY_ID': 'test-key',
      'ALPACA_API_SECRET_KEY': 'test-secret',
      'ALPACA_TRADING_BASE_URL': 'https://paper-api.alpaca.markets',
      'ALPACA_DATA_BASE_URL': 'https://data.alpaca.markets',
    });
  });

  test('listActiveTradable issues GET with auth headers and query', () async {
    final String body = await fixtures.loadString('alpaca_assets_active.json');
    final MockHttpClient mock = MockHttpClient()
      ..whenGet(
        '/v2/assets',
        http.Response(body, 200, headers: <String, String>{
          'content-type': 'application/json',
        }),
      );

    final AlpacaAssetsClient client =
        AlpacaAssetsClient(env: env, httpClient: mock);
    await client.listActiveTradable();

    expect(mock.requests, hasLength(1));
    final http.BaseRequest req = mock.requests.single;
    expect(req.method, 'GET');
    expect(
      req.url.toString(),
      startsWith('https://paper-api.alpaca.markets/v2/assets'),
    );
    expect(req.url.queryParameters['status'], 'active');
    expect(req.url.queryParameters['asset_class'], 'us_equity');
    expect(req.headers['APCA-API-KEY-ID'], 'test-key');
    expect(req.headers['APCA-API-SECRET-KEY'], 'test-secret');
  });

  test('listActiveTradable parses the fixture into AlpacaAsset rows',
      () async {
    final String body = await fixtures.loadString('alpaca_assets_active.json');
    final MockHttpClient mock = MockHttpClient()
      ..whenGet(
        '/v2/assets',
        http.Response(body, 200, headers: <String, String>{
          'content-type': 'application/json',
        }),
      );

    final AlpacaAssetsClient client =
        AlpacaAssetsClient(env: env, httpClient: mock);
    final List<AlpacaAsset> assets = await client.listActiveTradable();

    expect(assets, hasLength(5));

    final AlpacaAsset aapl =
        assets.firstWhere((AlpacaAsset a) => a.symbol == 'AAPL');
    expect(aapl.assetClass, 'us_equity');
    expect(aapl.exchange, 'NASDAQ');
    expect(aapl.name, 'Apple Inc. Common Stock');
    expect(aapl.status, 'active');
    expect(aapl.tradable, isTrue);
    expect(aapl.fractionable, isTrue);

    final AlpacaAsset pinkSheet =
        assets.firstWhere((AlpacaAsset a) => a.symbol == 'PNKZZ');
    expect(pinkSheet.tradable, isFalse);
    expect(pinkSheet.fractionable, isFalse);

    final AlpacaAsset brk =
        assets.firstWhere((AlpacaAsset a) => a.symbol == 'BRK.B');
    expect(brk.tradable, isTrue);
    expect(brk.fractionable, isFalse);
  });

  test('401 unauthorized throws AlpacaAssetsException with code + body',
      () async {
    final MockHttpClient mock = MockHttpClient()
      ..whenGet(
        '/v2/assets',
        http.Response(
          jsonEncode(<String, dynamic>{'message': 'forbidden.'}),
          401,
          headers: <String, String>{'content-type': 'application/json'},
        ),
      );

    final AlpacaAssetsClient client =
        AlpacaAssetsClient(env: env, httpClient: mock);

    await expectLater(
      client.listActiveTradable(),
      throwsA(
        isA<AlpacaAssetsException>()
            .having((AlpacaAssetsException e) => e.message, 'message',
                contains('401'))
            .having((AlpacaAssetsException e) => e.message, 'body',
                contains('forbidden')),
      ),
    );
  });

  test('500 server error throws AlpacaAssetsException with code + body',
      () async {
    final MockHttpClient mock = MockHttpClient()
      ..whenGet(
        '/v2/assets',
        http.Response('upstream exploded', 500),
      );

    final AlpacaAssetsClient client =
        AlpacaAssetsClient(env: env, httpClient: mock);

    await expectLater(
      client.listActiveTradable(),
      throwsA(
        isA<AlpacaAssetsException>()
            .having((AlpacaAssetsException e) => e.message, 'message',
                contains('500'))
            .having((AlpacaAssetsException e) => e.message, 'body',
                contains('upstream exploded')),
      ),
    );
  });

  test('empty array response returns [] and does not throw', () async {
    final MockHttpClient mock = MockHttpClient()
      ..whenGet(
        '/v2/assets',
        http.Response('[]', 200, headers: <String, String>{
          'content-type': 'application/json',
        }),
      );

    final AlpacaAssetsClient client =
        AlpacaAssetsClient(env: env, httpClient: mock);
    final List<AlpacaAsset> assets = await client.listActiveTradable();
    expect(assets, isEmpty);
  });
}