import 'package:memoize/memoize.dart';
import 'package:built_collection/built_collection.dart';
import 'package:invoiceninja_flutter/data/models/models.dart';
import 'package:invoiceninja_flutter/redux/ui/list_ui_state.dart';

var memoizedPaymentsByInvoice = memo3((String invoiceId,
        BuiltMap<String, PaymentEntity> paymentMap,
        BuiltList<String> paymentList) =>
    paymentsByInvoiceSelector(invoiceId, paymentMap, paymentList));

List<PaymentEntity> paymentsByInvoiceSelector(String invoiceId,
    BuiltMap<String, PaymentEntity> paymentMap, BuiltList<String> paymentList) {
  return paymentList
      .map((paymentId) => paymentMap[paymentId])
      .where((payment) =>
          payment.paymentables.map((p) => p.invoiceId).contains(invoiceId) &&
          !payment.isDeleted)
      .toList();
}

var memoizedDropdownPaymentList = memo4((BuiltMap<String, PaymentEntity>
            paymentMap,
        BuiltList<String> paymentList,
        BuiltMap<String, InvoiceEntity> invoiceMap,
        BuiltMap<String, ClientEntity> clientMap) =>
    dropdownPaymentsSelector(paymentMap, paymentList, invoiceMap, clientMap));

List<String> dropdownPaymentsSelector(
  BuiltMap<String, PaymentEntity> paymentMap,
  BuiltList<String> paymentList,
  BuiltMap<String, InvoiceEntity> invoiceMap,
  BuiltMap<String, ClientEntity> clientMap,
) {
  final list =
      paymentList.where((paymentId) => paymentMap[paymentId].isActive).toList();

  list.sort((paymentAId, paymentBId) {
    final paymentA = paymentMap[paymentAId];
    final paymentB = paymentMap[paymentBId];

    return paymentA.compareTo(
      payment: paymentB,
      sortAscending: true,
      sortField: PaymentFields.paymentDate,
      invoiceMap: invoiceMap,
      clientMap: clientMap,
    );
  });

  return list;
}

var memoizedFilteredPaymentList = memo5(
    (BuiltMap<String, PaymentEntity> paymentMap,
            BuiltList<String> paymentList,
            BuiltMap<String, InvoiceEntity> invoiceMap,
            BuiltMap<String, ClientEntity> clientMap,
            ListUIState paymentListState) =>
        filteredPaymentsSelector(
            paymentMap, paymentList, invoiceMap, clientMap, paymentListState));

List<String> filteredPaymentsSelector(
    BuiltMap<String, PaymentEntity> paymentMap,
    BuiltList<String> paymentList,
    BuiltMap<String, InvoiceEntity> invoiceMap,
    BuiltMap<String, ClientEntity> clientMap,
    ListUIState paymentListState) {
  final list = paymentList.where((paymentId) {
    final payment = paymentMap[paymentId];
    if (!payment.matchesStates(paymentListState.stateFilters)) {
      return false;
    }

    final client =
        clientMap[payment.clientId] ?? ClientEntity(id: payment.clientId);

    if (paymentListState.filterEntityId != null) {
      if (paymentListState.filterEntityType == EntityType.client &&
          payment.clientId != paymentListState.filterEntityId) {
        return false;
      } else if (paymentListState.filterEntityType == EntityType.invoice &&
          !payment.paymentables
              .map((p) => p.invoiceId)
              .contains(paymentListState.filterEntityId)) {
        return false;
      } else if (paymentListState.filterEntityType == EntityType.user &&
          !payment.userCanAccess(paymentListState.filterEntityId)) {
        return false;
      }
    } else if (!client.isActive) {
      return false;
    }

    return payment.matchesFilter(paymentListState.filter);
  }).toList();

  list.sort((paymentAId, paymentBId) {
    final paymentA = paymentMap[paymentAId];
    final paymentB = paymentMap[paymentBId];
    return paymentA.compareTo(
      payment: paymentB,
      sortAscending: paymentListState.sortAscending,
      sortField: paymentListState.sortField,
      invoiceMap: invoiceMap,
      clientMap: clientMap,
    );
  });

  return list;
}

var memoizedPaymentStatsForClient = memo3((String clientId,
        BuiltMap<String, PaymentEntity> paymentMap,
        BuiltMap<String, InvoiceEntity> invoiceMap) =>
    paymentStatsForClient(clientId, paymentMap, invoiceMap));

EntityStats paymentStatsForClient(
    String clientId,
    BuiltMap<String, PaymentEntity> paymentMap,
    BuiltMap<String, InvoiceEntity> invoiceMap) {
  int countActive = 0;
  int countArchived = 0;
  paymentMap.forEach((paymentId, payment) {
    if (payment.clientId == clientId) {
      if (payment.isActive) {
        countActive++;
      } else if (payment.isArchived) {
        countArchived++;
      }
    }
  });

  return EntityStats(countActive: countActive, countArchived: countArchived);
}

var memoizedPaymentStatsForUser = memo3((String userId,
        BuiltMap<String, PaymentEntity> paymentMap,
        BuiltMap<String, InvoiceEntity> invoiceMap) =>
    paymentStatsForClient(userId, paymentMap, invoiceMap));

EntityStats paymentStatsForUser(
    String userId,
    BuiltMap<String, PaymentEntity> paymentMap,
    BuiltMap<String, InvoiceEntity> invoiceMap) {
  int countActive = 0;
  int countArchived = 0;
  paymentMap.forEach((paymentId, payment) {
    if (payment.userCanAccess(userId)) {
      if (payment.isActive) {
        countActive++;
      } else if (payment.isArchived) {
        countArchived++;
      }
    }
  });

  return EntityStats(countActive: countActive, countArchived: countArchived);
}

bool hasPaymentChanges(
        PaymentEntity payment, BuiltMap<String, PaymentEntity> paymentMap) =>
    payment.isNew ? payment.isChanged : payment != paymentMap[payment.id];