/*
 * 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.service;

import io.mifos.anubis.api.v1.domain.Signature;
import io.mifos.identity.api.v1.domain.CallEndpointSet;
import io.mifos.identity.api.v1.domain.Permission;
import io.mifos.identity.internal.mapper.ApplicationCallEndpointSetMapper;
import io.mifos.identity.internal.mapper.PermissionMapper;
import io.mifos.identity.internal.mapper.SignatureMapper;
import io.mifos.identity.internal.repository.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.annotation.Nonnull;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

/**
 * @author Myrle Krantz
 */
@Service
public class ApplicationService {

  private final ApplicationSignatures applicationSignaturesRepository;
  private final ApplicationPermissions applicationPermissionsRepository;
  private final ApplicationPermissionUsers applicationPermissionsUserRepository;
  private final ApplicationCallEndpointSets applicationCallEndpointSets;

  @Autowired
  public ApplicationService(final ApplicationSignatures applicationSignaturesRepository,
                            final ApplicationPermissions applicationPermissionsRepository,
                            final ApplicationPermissionUsers applicationPermissionsUserRepository,
                            final ApplicationCallEndpointSets applicationCallEndpointSets) {
    this.applicationSignaturesRepository = applicationSignaturesRepository;
    this.applicationPermissionsRepository = applicationPermissionsRepository;
    this.applicationPermissionsUserRepository = applicationPermissionsUserRepository;
    this.applicationCallEndpointSets = applicationCallEndpointSets;
  }

  public List<String> getAllApplications() {
    return applicationSignaturesRepository.getAll().stream()
            .map(ApplicationSignatureEntity::getApplicationIdentifier)
            .collect(Collectors.toList());
  }

  public List<Permission> getAllPermissionsForApplication(final String applicationIdentifier) {
    return applicationPermissionsRepository.getAllPermissionsForApplication(applicationIdentifier).stream()
            .map(PermissionMapper::mapToPermission)
            .collect(Collectors.toList());
  }

  public Optional<Permission> getPermissionForApplication(
          final String applicationIdentifier,
          final String permittableEndpointGroupIdentifier) {
    return applicationPermissionsRepository.getPermissionForApplication(applicationIdentifier, permittableEndpointGroupIdentifier)
            .map(PermissionMapper::mapToPermission);
  }

  public Optional<Signature> getSignatureForApplication(final String applicationIdentifier, final String timestamp) {
    return applicationSignaturesRepository.get(applicationIdentifier, timestamp)
            .map(SignatureMapper::mapToSignature);
  }

  public boolean applicationExists(final String applicationIdentifier) {
    return applicationSignaturesRepository.signaturesExistForApplication(applicationIdentifier);
  }

  public boolean applicationPermissionExists(final @Nonnull String applicationIdentifier,
                                             final @Nonnull String permittableGroupIdentifier) {
    return applicationPermissionsRepository.exists(applicationIdentifier, permittableGroupIdentifier);
  }

  public boolean applicationPermissionEnabledForUser(final String applicationIdentifier,
                                                     final String permittableEndpointGroupIdentifier,
                                                     final String userIdentifier) {
    return applicationPermissionsUserRepository.enabled(applicationIdentifier, permittableEndpointGroupIdentifier, userIdentifier);
  }

  public List<CallEndpointSet> getAllCallEndpointSetsForApplication(final String applicationIdentifier) {
    return applicationCallEndpointSets.getAllForApplication(applicationIdentifier).stream()
            .map(ApplicationCallEndpointSetMapper::map)
            .collect(Collectors.toList());
  }

  public Optional<CallEndpointSet> getCallEndpointSetForApplication(
          final String applicationIdentifier,
          final String callEndpointSetIdentifier) {
    return applicationCallEndpointSets.get(applicationIdentifier, callEndpointSetIdentifier)
            .map(ApplicationCallEndpointSetMapper::map);
  }

  public boolean applicationCallEndpointSetExists(String applicationIdentifier, String callEndpointSetIdentifier) {
    return applicationCallEndpointSets.get(applicationIdentifier, callEndpointSetIdentifier).isPresent();
  }
}