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';

const destinationLabel =
    'Saved bank ending 1234 — Personal current account for daily transfers and reimbursements';

class LiveWallet extends DummyWalletService {
  LiveWallet({this.hasMethod = true})
    : super(DummyIdentityService(delay: Duration.zero), delay: Duration.zero);
  final bool hasMethod;
  String? received;
  @override
  bool get isSimulated => false;
  @override
  Future<WalletSnapshot> fetch() async => WalletSnapshot(
    accounts: [
      CurrencyAccount(
        id: 'real-account',
        currency: 'EUR',
        precision: 2,
        available: 7500,
        payoutMethod: hasMethod ? 'method-ref' : '',
        payoutLabel: hasMethod ? destinationLabel : '',
        canFund: false,
      ),
    ],
    operations: [],
  );
  @override
  Future<Quote> quote(TransferRequest request) async {
    received = request.recipient;
    return Quote(
      id: 'quote',
      request: TransferRequest(
        kind: request.kind,
        source: request.source,
        amount: request.amount,
        recipient: destinationLabel,
      ),
      fee: 100,
      debit: request.amount + 100,
      credit: request.amount,
      expiresAt: DateTime.now().add(const Duration(minutes: 5)),
      rateNumerator: 1,
      rateDenominator: 1,
    );
  }
}

void main() {
  for (final hasMethod in [true, false]) {
    testWidgets(
      'backend payout ${hasMethod ? 'reviews saved destination' : 'explains missing destination'} at narrow width',
      (t) async {
        t.view.physicalSize = const Size(320, 1100);
        t.view.devicePixelRatio = 1;
        t.platformDispatcher.textScaleFactorTestValue = 1.6;
        t.platformDispatcher.defaultRouteNameTestValue = '/payout';
        addTearDown(t.view.resetPhysicalSize);
        addTearDown(t.view.resetDevicePixelRatio);
        addTearDown(t.platformDispatcher.clearTextScaleFactorTestValue);
        addTearDown(t.platformDispatcher.clearDefaultRouteNameTestValue);
        final wallet = LiveWallet(hasMethod: hasMethod);
        await t.pumpWidget(SxchngeApp(walletService: wallet));
        await t.pumpAndSettle();
        expect(find.byKey(const ValueKey('transfer-recipient')), findsNothing);
        await t.enterText(find.byKey(const ValueKey('transfer-amount')), '20');
        final review = find.byKey(const ValueKey('transfer-review'));
        await t.ensureVisible(review);
        if (hasMethod) {
          expect(find.text(destinationLabel), findsOneWidget);
          final choose = find.byKey(
            const ValueKey('choose-configured-destination'),
          );
          expect(t.widget<FilledButton>(review).onPressed, isNull);
          await t.ensureVisible(choose);
          await t.tap(choose);
          await t.pumpAndSettle();
          await t.ensureVisible(review);
          await t.tap(review);
          await t.pumpAndSettle();
          expect(wallet.received, 'method-ref');
          expect(find.text(destinationLabel), findsOneWidget);
          expect(
            find.byKey(const ValueKey('transfer-confirm')),
            findsOneWidget,
          );
        } else {
          expect(t.widget<FilledButton>(review).onPressed, isNull);
          expect(
            find.text(
              'No payout destination is set up for this account. Contact support to add one.',
            ),
            findsOneWidget,
          );
        }
        expect(t.takeException(), isNull);
        await t.pumpWidget(const SizedBox.shrink());
      },
    );
  }
}