/**
 * 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 demo.jaxrs.swagger.server;

import java.io.IOException;

import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.core.MultivaluedMap;

/**
 * This is a simple optional CORS filter used for this demo to make the resources accessible
 * from other origins. You may omit using this filter or use CXF's advanced CORS filter 
 * org.apache.cxf.rs.security.cors.CrossOriginResourceSharingFilter  
 * included in cxf-rt-rs-security-cors if you need a more comprehensive accessibility rules.
 */
public class ApiOriginFilter implements ContainerResponseFilter {

    @Override
    public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) 
        throws IOException {
        MultivaluedMap<String, Object> headers = responseContext.getHeaders();
        headers.add("Access-Control-Allow-Origin", "*");
        headers.add("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT");
        headers.add("Access-Control-Allow-Headers", "Content-Type");
    }
}
