/*
 * 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.shindig.gadgets.servlet;

import static junitx.framework.ComparableAssert.assertGreater;
import static junitx.framework.ComparableAssert.assertLesser;

import org.apache.shindig.common.util.DateUtil;
import org.apache.shindig.gadgets.GadgetTestFixture;
import org.apache.shindig.gadgets.LockedDomainService;

import org.apache.commons.lang.StringUtils;

import java.util.Arrays;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Contains everything needed for making servlet requests.
 */
public class ServletTestFixture extends GadgetTestFixture {
  public final HttpServletRequest request = mock(HttpServletRequest.class);
  public final HttpServletResponse response = mock(HttpServletResponse.class);
  public final HttpServletResponseRecorder recorder = new HttpServletResponseRecorder(response);
  public final LockedDomainService lockedDomainService = mock(LockedDomainService.class);

  private final long testStartTime = timeSource.currentTimeMillis();

  public ServletTestFixture() {
    HttpUtil.setTimeSource(timeSource);
  }

  public void checkCacheControlHeaders(int ttl, boolean noProxy) {

    long expires = DateUtil.parseDate(recorder.getHeader("Expires")).getTime();

    long lowerBound = testStartTime + (1000L * (ttl - 1));
    long upperBound = lowerBound + 2000L;

    assertGreater("Expires should be at least " + ttl + " seconds more than start time.",
        lowerBound, expires);

    assertLesser("Expires should be within 2 seconds of the requested value.",
        upperBound, expires);

    if (ttl == 0) {
      assertEquals("no-cache", recorder.getHeader("Pragma"));
      assertEquals("no-cache", recorder.getHeader("Cache-Control"));
    } else {
      List<String> directives
          = Arrays.asList(StringUtils.split(recorder.getHeader("Cache-Control"), ','));

      assertTrue("Incorrect max-age set.", directives.contains("max-age=" + ttl));
      if (noProxy) {
        assertTrue("No private Cache-Control directive was set.", directives.contains("private"));
      } else {
        assertTrue("No public Cache-Control directive was set.", directives.contains("public"));
      }
    }
  }
}