service/src/main/java/io/mifos/deposit/service/internal/service/ProductInstanceService.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package io.mifos.deposit.service.internal.service;

import io.mifos.accounting.api.v1.domain.Account;
import io.mifos.deposit.api.v1.instance.domain.ProductInstance;
import io.mifos.deposit.service.ServiceConstants;
import io.mifos.deposit.service.internal.mapper.ProductInstanceMapper;
import io.mifos.deposit.service.internal.repository.ProductDefinitionEntity;
import io.mifos.deposit.service.internal.repository.ProductDefinitionRepository;
import io.mifos.deposit.service.internal.repository.ProductInstanceRepository;
import io.mifos.deposit.service.internal.service.helper.AccountingService;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;

import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

@Service
public class ProductInstanceService {

  private final Logger logger;
  private final ProductInstanceRepository productInstanceRepository;
  private final ProductDefinitionRepository productDefinitionRepository;
  private final AccountingService accountingService;

  @Autowired
  public ProductInstanceService(@Qualifier(ServiceConstants.LOGGER_NAME) final Logger logger,
                                final ProductInstanceRepository productInstanceRepository,
                                final ProductDefinitionRepository productDefinitionRepository,
                                final AccountingService accountingService) {
    super();
    this.logger = logger;
    this.productInstanceRepository = productInstanceRepository;
    this.productDefinitionRepository = productDefinitionRepository;
    this.accountingService = accountingService;
  }

  public List<ProductInstance> findByCustomer(final String customerIdentifier) {
    return this.productInstanceRepository.findByCustomerIdentifier(customerIdentifier)
        .stream()
        .map(productInstanceEntity -> {
          final Account account = this.accountingService.findAccount(productInstanceEntity.getAccountIdentifier());
          return ProductInstanceMapper.map(productInstanceEntity, account);
        }).
        collect(Collectors.toList());
  }

  public List<ProductInstance> findByProductDefinition(final String identifier) {
    final Optional<ProductDefinitionEntity> optionalProductDefinition = this.productDefinitionRepository.findByIdentifier(identifier);

    return optionalProductDefinition
        .map(productDefinitionEntity -> this.productInstanceRepository.findByProductDefinition(productDefinitionEntity)
          .stream()
          .map(productInstanceEntity -> {
            final Account account = this.accountingService.findAccount(productInstanceEntity.getAccountIdentifier());
            return ProductInstanceMapper.map(productInstanceEntity, account);
          })
          .collect(Collectors.toList())).orElseGet(Collections::emptyList);

  }

  public Optional<ProductInstance> findByAccountIdentifier(final String identifier) {
    return this.productInstanceRepository.findByAccountIdentifier(identifier).map(productInstanceEntity -> {
      final Account account = this.accountingService.findAccount(productInstanceEntity.getAccountIdentifier());
      return ProductInstanceMapper.map(productInstanceEntity, account);
    });
  }
}