import 'dart:convert';

import 'package:test/test.dart';

import 'package:pshared/api/requests/payment/initiate.dart';
import 'package:pshared/api/requests/payment/initiate_payments.dart';
import 'package:pshared/api/requests/payment/quote.dart';
import 'package:pshared/api/responses/payment/quotation.dart';
import 'package:pshared/data/dto/money.dart';
import 'package:pshared/data/dto/payment/currency_pair.dart';
import 'package:pshared/data/dto/payment/endpoint.dart';
import 'package:pshared/data/dto/payment/intent/fx.dart';
import 'package:pshared/data/dto/payment/intent/payment.dart';
import 'package:pshared/data/mapper/payment/payment.dart';
import 'package:pshared/models/payment/asset.dart';
import 'package:pshared/models/payment/chain_network.dart';
import 'package:pshared/models/payment/methods/card_token.dart';
import 'package:pshared/models/payment/methods/crypto_address.dart';
import 'package:pshared/models/payment/methods/managed_wallet.dart';

void main() {
  group('Payment request DTO contract', () {
    test('serializes endpoint types to backend canonical values', () {
      final managed = ManagedWalletPaymentMethod(
        managedWalletRef: 'mw-1',
      ).toDTO();
      final external = CryptoAddressPaymentMethod(
        asset: const PaymentAsset(
          chain: ChainNetwork.tronMainnet,
          tokenSymbol: 'USDT',
        ),
        address: 'TXYZ',
      ).toDTO();
      final cardToken = CardTokenPaymentMethod(
        token: 'tok_1',
        maskedPan: '4111',
      ).toDTO();

      expect(managed.type, equals('managedWallet'));
      expect(external.type, equals('cryptoAddress'));
      expect(cardToken.type, equals('cardToken'));
    });

    test('quote payment request uses expected backend field names', () {
      final request = QuotePaymentRequest(
        idempotencyKey: '',
        previewOnly: true,
        intent: const PaymentIntentDTO(
          kind: 'payout',
          source: PaymentEndpointDTO(
            type: 'ledger',
            data: {'ledger_account_ref': 'ledger:src'},
          ),
          destination: PaymentEndpointDTO(
            type: 'cardToken',
            data: {'token': 'tok_1', 'masked_pan': '4111'},
          ),
          amount: MoneyDTO(amount: '10', currency: 'USD'),
          settlementMode: 'fix_received',
          comment: 'invoice-7',
        ),
      );

      final json =
          jsonDecode(jsonEncode(request.toJson())) as Map<String, dynamic>;

      expect(json['idempotencyKey'], equals(''));
      expect(json['previewOnly'], isTrue);
      expect(json['intent'], isA<Map<String, dynamic>>());

      final intent = json['intent'] as Map<String, dynamic>;
      expect(intent['kind'], equals('payout'));
      expect(intent['settlement_mode'], equals('fix_received'));
      expect(intent['comment'], equals('invoice-7'));
      expect(intent.containsKey('settlement_currency'), isFalse);

      final source = intent['source'] as Map<String, dynamic>;
      final destination = intent['destination'] as Map<String, dynamic>;
      expect(source['type'], equals('ledger'));
      expect(destination['type'], equals('cardToken'));
    });

    test('quote payment request serializes fx side to backend value', () {
      final request = QuotePaymentRequest(
        idempotencyKey: '',
        previewOnly: true,
        intent: const PaymentIntentDTO(
          kind: 'payout',
          source: PaymentEndpointDTO(
            type: 'managedWallet',
            data: {'managed_wallet_ref': 'mw-1'},
          ),
          destination: PaymentEndpointDTO(
            type: 'cardToken',
            data: {'token': 'tok_1', 'masked_pan': '4111'},
          ),
          amount: MoneyDTO(amount: '10', currency: 'USDT'),
          settlementMode: 'fix_source',
          fx: FxIntentDTO(
            pair: CurrencyPairDTO(base: 'RUB', quote: 'USDT'),
            side: 'buy_base_sell_quote',
          ),
        ),
      );

      final json =
          jsonDecode(jsonEncode(request.toJson())) as Map<String, dynamic>;
      final intent = json['intent'] as Map<String, dynamic>;
      final fx = intent['fx'] as Map<String, dynamic>;
      expect(fx['side'], equals('buy_base_sell_quote'));
    });

    test('quote response parses backend fx quote pricedAtUnixMs', () {
      final response = PaymentQuoteResponse.fromJson({
        'accessToken': {'token': 'token', 'expiration': '2026-02-25T00:00:00Z'},
        'idempotencyKey': 'idem-1',
        'quote': {
          'quoteRef': 'q-1',
          'intentRef': 'intent-1',
          'amounts': {
            'sourcePrincipal': {'amount': '10', 'currency': 'USDT'},
            'sourceDebitTotal': {'amount': '10.75', 'currency': 'USDT'},
            'destinationSettlement': {'amount': '760', 'currency': 'RUB'},
          },
          'fees': {
            'lines': [
              {
                'ledgerAccountRef': 'ledger:fees',
                'amount': {'amount': '0.75', 'currency': 'USDT'},
                'lineType': 'posting_line_type_fee',
                'side': 'entry_side_debit',
                'meta': {'fee_target': 'wallet'},
              },
            ],
          },
          'fxQuote': {
            'quoteRef': 'fx-1',
            'baseCurrency': 'USDT',
            'quoteCurrency': 'RUB',
            'side': 'sell_base_buy_quote',
            'price': '76',
            'baseAmount': {'amount': '10', 'currency': 'USDT'},
            'quoteAmount': {'amount': '760', 'currency': 'RUB'},
            'expiresAtUnixMs': 1771945907749,
            'pricedAtUnixMs': 1771945907000,
            'provider': 'binance',
            'rateRef': 'rate-1',
            'firm': false,
          },
        },
      });

      expect(response.quote.fxQuote?.pricedAtUnixMs, equals(1771945907000));
      expect(response.quote.intentRef, equals('intent-1'));
      expect(response.quote.amounts?.sourceDebitTotal?.amount, equals('10.75'));
      expect(response.quote.fees?.lines?.length, equals(1));
    });

    test('initiate payment by quote keeps expected fields', () {
      final request = InitiatePaymentRequest(
        idempotencyKey: 'idem-2',
        quoteRef: 'q-1',
        clientPaymentRef: 'cp-1',
      );

      final json = request.toJson();
      expect(json['idempotencyKey'], equals('idem-2'));
      expect(json['quoteRef'], equals('q-1'));
      expect(json['clientPaymentRef'], equals('cp-1'));
      expect(json.containsKey('intent'), isTrue);
      expect(json['intent'], isNull);
    });

    test('initiate multi payments request keeps expected fields', () {
      final request = InitiatePaymentsRequest(
        idempotencyKey: 'idem-3',
        quoteRef: 'q-2',
        clientPaymentRef: 'cp-1',
      );

      final json = request.toJson();
      expect(json['idempotencyKey'], equals('idem-3'));
      expect(json['quoteRef'], equals('q-2'));
      expect(json['clientPaymentRef'], equals('cp-1'));
      expect(json.containsKey('intentRef'), isFalse);
      expect(json.containsKey('intentRefs'), isFalse);
    });
  });
}