/*-
 * ============LICENSE_START=======================================================
 * org.onap.dmaap
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */

package org.onap.dmaap.dbcapi.resources;

import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerRequestFilter;

import org.apache.log4j.Logger;
import org.onap.dmaap.dbcapi.authentication.AuthenticationErrorException;
import org.onap.dmaap.dbcapi.service.ApiService;


@Authorization
public class AuthorizationFilter implements ContainerRequestFilter   {
	
	private Logger logger = Logger.getLogger(AuthorizationFilter.class.getName());
	private ResponseBuilder responseBuilder = new ResponseBuilder();
	
	@Override
	public void filter(ContainerRequestContext requestContext) {

		ApiService apiResp = new ApiService()
			.setAuth( requestContext.getHeaderString("Authorization") )
			.setUriPath(requestContext.getUriInfo().getPath())
			.setHttpMethod( requestContext.getMethod() )
			.setRequestId( requestContext.getHeaderString("X-ECOMP-RequestID") );

		try {
			apiResp.checkAuthorization();
		} catch ( AuthenticationErrorException ae ) {
			logger.error("Error", ae);
			requestContext.abortWith( responseBuilder.unauthorized( apiResp.getErr().getMessage() ) );
		} catch ( Exception e ) {
			logger.error("Error", e);
			requestContext.abortWith( responseBuilder.unavailable() );
		}

	}

}