import 'dart:async';

import 'package:flutter/material.dart';

import 'package:flutter_test/flutter_test.dart';

import 'package:sxchnge_kyc/sxchnge_kyc.dart';

import 'package:sxchnge_wallet/sxchnge_wallet.dart';

import 'package:sxchnge_app/main.dart';
import 'package:sxchnge_app/providers/locale.dart';

class SetupWallet extends DummyWalletService {
  SetupWallet(String locale)
    : super(
        DummyIdentityService(delay: Duration.zero),
        delay: Duration.zero,
        initialLocale: locale,
      );

  Completer<WalletSnapshot> pending = Completer<WalletSnapshot>();
  int calls = 0;

  @override
  Future<WalletSnapshot> fetch() {
    calls++;
    return pending.future;
  }
}

WalletSnapshot readyAccounts() => WalletSnapshot(
  accounts: [
    for (final currency in ['RUB', 'USDT', 'USDC'])
      CurrencyAccount(
        id: currency.toLowerCase(),
        currency: currency,
        precision: currency == 'RUB' ? 2 : 6,
        available: 0,
      ),
  ],
  operations: [],
);

void main() {
  for (final locale in ['en', 'ru']) {
    for (final path in ['/accounts', '/top-up', '/exchange', '/payout']) {
      testWidgets(
        '$path recovers account setup in $locale at narrow width and large text',
        (t) async {
          t.view.physicalSize = const Size(320, 1100);
          t.view.devicePixelRatio = 1;
          t.platformDispatcher.textScaleFactorTestValue = 1.6;
          t.platformDispatcher.defaultRouteNameTestValue = path;
          addTearDown(t.view.resetPhysicalSize);
          addTearDown(t.view.resetDevicePixelRatio);
          addTearDown(t.platformDispatcher.clearTextScaleFactorTestValue);
          addTearDown(t.platformDispatcher.clearDefaultRouteNameTestValue);
          final wallet = SetupWallet(locale);
          await t.pumpWidget(
            SxchngeApp(
              walletService: wallet,
              localeProvider: LocaleProvider(initialLocale: Locale(locale)),
            ),
          );
          await t.pump();
          await t.pump();
          final loading = locale == 'en'
              ? 'Getting your RUB, USDT and USDC accounts ready…'
              : 'Подготавливаем ваши счета в RUB, USDT и USDC…';
          final failed = locale == 'en'
              ? 'We couldn’t load your currency accounts. Try again to continue.'
              : 'Не удалось загрузить валютные счета. Повторите попытку, чтобы продолжить.';
          final retry = locale == 'en' ? 'Try again' : 'Повторить попытку';
          expect(find.text(loading), findsOneWidget);
          expect(find.textContaining('Contact support'), findsNothing);
          expect(t.takeException(), isNull);
          wallet.pending.completeError(
            const WalletException(WalletError.unavailable),
          );
          await t.pumpAndSettle();
          expect(find.text(failed), findsOneWidget);
          expect(find.text(loading), findsNothing);
          expect(find.text(retry), findsOneWidget);
          expect(t.takeException(), isNull);
          wallet.pending = Completer<WalletSnapshot>();
          await t.ensureVisible(find.text(retry));
          await t.tap(find.text(retry));
          await t.pump();
          expect(wallet.calls, 2);
          expect(find.text(loading), findsOneWidget);
          expect(find.text(failed), findsNothing);
          wallet.pending.complete(readyAccounts());
          await t.pumpAndSettle();
          expect(find.text(loading), findsNothing);
          expect(find.text(failed), findsNothing);
          expect(find.text('RUB'), findsWidgets);
          expect(t.takeException(), isNull);
          await t.pumpWidget(const SizedBox.shrink());
        },
      );
    }
  }
}