// Copyright (C) 2015 Ericsson
//
// 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 com.ericsson.gerrit.plugins.highavailability.cache;

import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
import static com.github.tomakehurst.wiremock.client.WireMock.givenThat;
import static com.github.tomakehurst.wiremock.client.WireMock.post;
import static com.github.tomakehurst.wiremock.client.WireMock.postRequestedFor;
import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
import static com.github.tomakehurst.wiremock.client.WireMock.verify;
import static com.github.tomakehurst.wiremock.core.WireMockConfiguration.options;

import com.google.common.base.Throwables;
import com.google.gerrit.acceptance.GerritConfig;
import com.google.gerrit.acceptance.LightweightPluginDaemonTest;
import com.google.gerrit.acceptance.NoHttpd;
import com.google.gerrit.acceptance.TestPlugin;
import com.google.gerrit.acceptance.UseSsh;

import com.github.tomakehurst.wiremock.http.Request;
import com.github.tomakehurst.wiremock.http.RequestListener;
import com.github.tomakehurst.wiremock.http.Response;
import com.github.tomakehurst.wiremock.junit.WireMockRule;

import org.apache.http.HttpStatus;
import org.junit.Rule;
import org.junit.Test;

import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;
import java.util.concurrent.TimeUnit;

@NoHttpd
@UseSsh
@TestPlugin(
    name = "high-availability",
    sysModule = "com.ericsson.gerrit.plugins.highavailability.Module",
    httpModule = "com.ericsson.gerrit.plugins.highavailability.HttpModule"
)
public class CacheEvictionIT extends LightweightPluginDaemonTest {
  private static final int PORT = 18888;
  private static final String URL = "http://localhost:" + PORT;

  @Rule
  public WireMockRule wireMockRule = new WireMockRule(options().port(PORT), false);

  @Test
  @GerritConfig(name = "plugin.high-availability.url", value = URL)
  @GerritConfig(name = "plugin.high-availability`.user", value = "admin")
  @GerritConfig(name = "plugin.high-availability.cacheThreadPoolSize", value = "10")
  public void flushAndSendPost() throws Exception {
    final String flushRequest =
        "/plugins/high-availability/cache/" + Constants.PROJECT_LIST;
    final CyclicBarrier checkPoint = new CyclicBarrier(2);
    wireMockRule.addMockServiceRequestListener(new RequestListener() {
      @Override
      public void requestReceived(Request request, Response response) {
        if (request.getAbsoluteUrl().contains(flushRequest)) {
          try {
            checkPoint.await();
          } catch (InterruptedException | BrokenBarrierException e) {
            Throwables.propagateIfPossible(e);
          }
        }
      }
    });
    givenThat(post(urlEqualTo(flushRequest))
        .willReturn(aResponse().withStatus(HttpStatus.SC_NO_CONTENT)));

    adminSshSession
        .exec("gerrit flush-caches --cache " + Constants.PROJECT_LIST);
    checkPoint.await(5, TimeUnit.SECONDS);
    verify(postRequestedFor(urlEqualTo(flushRequest)));
  }
}