// Package imports:
import 'package:built_collection/built_collection.dart';
import 'package:invoiceninja_flutter/redux/app/app_state.dart';
import 'package:memoize/memoize.dart';

// Project imports:
import 'package:invoiceninja_flutter/data/models/models.dart';
import 'package:invoiceninja_flutter/redux/ui/list_ui_state.dart';

var memoizedDropdownDocumentList = memo3(
    (BuiltMap<String, DocumentEntity> documentMap,
            BuiltList<String> documentList, String clientId) =>
        dropdownDocumentsSelector(documentMap, documentList, clientId));

List<String> dropdownDocumentsSelector(
    BuiltMap<String, DocumentEntity> documentMap,
    BuiltList<String> documentList,
    String clientId) {
  final list = documentList.where((documentId) {
    final document = documentMap[documentId]!;
    /*
    if (clientId != null && clientId > 0 && document.clientId != clientId) {
      return false;
    }
    */
    return document.isActive;
  }).toList();

  list.sort((documentAId, documentBId) {
    final documentA = documentMap[documentAId]!;
    final documentB = documentMap[documentBId];
    return documentA.compareTo(documentB, DocumentFields.name, true);
  });

  return list;
}

var memoizedFilteredDocumentList = memo4((
  SelectionState selectionState,
  BuiltMap<String?, DocumentEntity?> documentMap,
  BuiltList<String> documentList,
  ListUIState documentListState,
) =>
    filteredDocumentsSelector(
      selectionState,
      documentMap,
      documentList,
      documentListState,
    ));

List<String> filteredDocumentsSelector(
  SelectionState selectionState,
  BuiltMap<String?, DocumentEntity?> documentMap,
  BuiltList<String> documentList,
  ListUIState documentListState,
) {
  final filterEntityId = selectionState.filterEntityId;
  final filterEntityType = selectionState.filterEntityType;

  final list = documentList.where((documentId) {
    final document = documentMap[documentId];

    if (filterEntityType != null) {
      if (filterEntityType == EntityType.document &&
          document!.id != filterEntityId) {
        return false;
      } else if (document!.parentType != filterEntityType ||
          document.parentId != filterEntityId) {
        return false;
      }
    }

    if (!document!.matchesStates(documentListState.stateFilters)) {
      return false;
    }
    if (!document.matchesStatuses(documentListState.statusFilters)) {
      return false;
    }
    return document.matchesFilter(documentListState.filter);
  }).toList();

  list.sort((documentAId, documentBId) {
    final documentA = documentMap[documentAId]!;
    final documentB = documentMap[documentBId];
    return documentA.compareTo(documentB, documentListState.sortField,
        documentListState.sortAscending);
  });

  return list;
}

var memoizedInvoiceDocumentsSelector = memo3(
    (BuiltMap<String, DocumentEntity> documentMap,
            BuiltMap<String, ExpenseEntity> expenseMap, InvoiceEntity entity) =>
        invoiceDocumentsSelector(documentMap, expenseMap, entity));

List<String> invoiceDocumentsSelector(
    BuiltMap<String, DocumentEntity> documentMap,
    BuiltMap<String, ExpenseEntity> expenseMap,
    InvoiceEntity entity) {
  final map = <String?, List<String>>{};
  expenseMap.forEach((int, expense) {
    if (expense.invoiceDocuments) {
      if (map.containsKey(expense.invoiceId)) {
        map[expense.invoiceId]!.add(expense.id);
      } else {
        map[expense.invoiceId] = [expense.id];
      }
    }
  });

  final list = documentMap.keys.where((documentId) {
    final document = documentMap[documentId]!;

    if (!document.isActive) {
      return false;
    }

    /*
    if (document.invoiceId == entity.id) {
      return true;
    } else if (map.containsKey(entity.id) &&
        map[entity.id].contains(document.expenseId)) {
      return true;
    }
     */

    return false;
  }).toList();

  list.sort((documentAId, documentBId) {
    final documentA = documentMap[documentAId]!;
    final documentB = documentMap[documentBId];
    return documentA.compareTo(documentB, DocumentFields.id, true);
  });

  return list.toList();
}