service/src/main/java/io/mifos/identity/internal/mapper/PermissionMapper.java

/*
 * Copyright 2017 The Mifos Initiative.
 *
 * Licensed 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.identity.internal.mapper;

import io.mifos.anubis.api.v1.domain.AllowedOperation;
import io.mifos.identity.api.v1.domain.Permission;
import io.mifos.identity.internal.repository.AllowedOperationType;
import io.mifos.identity.internal.repository.PermissionType;

import javax.annotation.Nullable;
import java.util.Collections;
import java.util.Set;
import java.util.stream.Collectors;

/**
 * @author Myrle Krantz
 */
public interface PermissionMapper {

  static Set<AllowedOperationType> mapToAllowedOperationsTypeSet(
          @Nullable final Set<AllowedOperation> allowedOperations) {
    if (allowedOperations == null)
      return Collections.emptySet();

    return allowedOperations.stream().map(op -> {
      switch (op) {
        case READ:
          return AllowedOperationType.READ;
        case CHANGE:
          return AllowedOperationType.CHANGE;
        case DELETE:
          return AllowedOperationType.DELETE;
        default:
          return null;
      }
    }).filter(op -> (op != null)).collect(Collectors.toSet());
  }

  static Set<AllowedOperation> mapToAllowedOperations(final Set<AllowedOperationType> allowedOperations) {
    return allowedOperations.stream().map(op -> {
      switch (op) {
        case READ:
          return AllowedOperation.READ;
        case CHANGE:
          return AllowedOperation.CHANGE;
        case DELETE:
          return AllowedOperation.DELETE;
        default:
          return null;
      }
    }).filter(op -> (op != null)).collect(Collectors.toSet());
  }

  static PermissionType mapToPermissionType(final Permission instance) {
    return new PermissionType(instance.getPermittableEndpointGroupIdentifier(), mapToAllowedOperationsTypeSet(instance.getAllowedOperations()));
  }

  static Permission mapToPermission(final PermissionType instance) {
    return new Permission(instance.getPermittableGroupIdentifier(), mapToAllowedOperations(instance.getAllowedOperations()));
  }
}