/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * 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 org.keycloak.testsuite.adapter.filter;


import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;

import org.keycloak.common.util.Time;

/**
 * Filter to handle "special" requests to perform actions on adapter side (for example setting time offset )
 *
 * @author <a href="mailto:mposolda@redhat.com">Marek Posolda</a>
 */
public class AdapterActionsFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse servletResp = (HttpServletResponse) response;

        //Accept timeOffset as argument to enforce timeouts
        String timeOffsetParam = request.getParameter("timeOffset");
        if (timeOffsetParam != null && !timeOffsetParam.isEmpty()) {
            Time.setOffset(Integer.parseInt(timeOffsetParam));
        }

        // Continue request
        chain.doFilter(request, response);

    }

    @Override
    public void destroy() {

    }

    private void writeResponse(HttpServletResponse response, String responseText) throws IOException {
        PrintWriter writer = response.getWriter();
        writer.println(responseText);
        writer.flush();
    }
}
