/*
    * 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 org.apache.syncope.core.rest.cxf.service;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.net.URI;
  import java.nio.charset.StandardCharsets;
  import java.util.List;
  import javax.ws.rs.InternalServerErrorException;
  import javax.ws.rs.core.Response;
  import javax.ws.rs.core.StreamingOutput;
  import org.apache.commons.io.IOUtils;
  import org.apache.syncope.common.lib.to.MailTemplateTO;
  import org.apache.syncope.common.lib.types.MailTemplateFormat;
  import org.apache.syncope.common.rest.api.RESTHeaders;
  import org.apache.syncope.common.rest.api.service.MailTemplateService;
  import org.apache.syncope.core.logic.MailTemplateLogic;
  import org.springframework.stereotype.Service;
  
  @Service
  public class MailTemplateServiceImpl extends AbstractService implements MailTemplateService {
  
      protected final MailTemplateLogic logic;
  
      public MailTemplateServiceImpl(final MailTemplateLogic logic) {
          this.logic = logic;
      }
  
      @Override
      public Response create(final MailTemplateTO mailTemplateTO) {
          MailTemplateTO created = logic.create(mailTemplateTO.getKey());
          URI location = uriInfo.getAbsolutePathBuilder().path(created.getKey()).build();
          return Response.created(location).
                  header(RESTHeaders.RESOURCE_KEY, created.getKey()).
                  build();
      }
  
      @Override
      public MailTemplateTO read(final String key) {
          return logic.read(key);
      }
  
      @Override
      public List<MailTemplateTO> list() {
          return logic.list();
      }
  
      @Override
      public void delete(final String key) {
          logic.delete(key);
      }
  
      @Override
      public Response getFormat(final String key, final MailTemplateFormat format) {
          String template = logic.getFormat(key, format);
          StreamingOutput sout = (os) -> os.write(template.getBytes());
  
          return Response.ok(sout).
                  type(format.getMediaType()).
                  build();
      }
  
      @Override
      public void setFormat(final String key, final MailTemplateFormat format, final InputStream templateIn) {
          try {
              logic.setFormat(key, format, IOUtils.toString(templateIn, StandardCharsets.UTF_8));
          } catch (final IOException e) {
              LOG.error("While setting format {} for mail template {}", format, key, e);
              throw new InternalServerErrorException("Could not read entity", e);
          }
      }
  
      @Override
      public void removeFormat(final String key, final MailTemplateFormat format) {
          logic.setFormat(key, format, null);
      }
  }