// Copyright (C) 2014 The Android Open Source Project
//
// 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.google.gerrit.acceptance.rest.config;

import static com.google.common.truth.Truth.assertThat;
import static com.google.gerrit.acceptance.testsuite.project.TestProjectUpdate.allowCapability;
import static com.google.gerrit.acceptance.testsuite.project.TestProjectUpdate.capabilityKey;
import static com.google.gerrit.server.group.SystemGroupBackend.REGISTERED_USERS;

import com.google.gerrit.acceptance.AbstractDaemonTest;
import com.google.gerrit.acceptance.RestResponse;
import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
import com.google.gerrit.common.data.GlobalCapability;
import com.google.gerrit.server.restapi.config.ListCaches.CacheInfo;
import com.google.inject.Inject;
import org.junit.Test;

public class FlushCacheIT extends AbstractDaemonTest {
  @Inject private ProjectOperations projectOperations;

  @Test
  public void flushCache() throws Exception {
    // access the admin group once so that it is loaded into the group cache
    adminGroup();

    RestResponse r = adminRestSession.get("/config/server/caches/groups_byname");
    CacheInfo result = newGson().fromJson(r.getReader(), CacheInfo.class);
    assertThat(result.entries.mem).isGreaterThan((long) 0);

    r = adminRestSession.post("/config/server/caches/groups_byname/flush");
    r.assertOK();
    r.consume();

    r = adminRestSession.get("/config/server/caches/groups_byname");
    result = newGson().fromJson(r.getReader(), CacheInfo.class);
    assertThat(result.entries.mem).isNull();
  }

  @Test
  public void flushCache_Forbidden() throws Exception {
    userRestSession.post("/config/server/caches/accounts/flush").assertForbidden();
  }

  @Test
  public void flushCache_NotFound() throws Exception {
    adminRestSession.post("/config/server/caches/nonExisting/flush").assertNotFound();
  }

  @Test
  public void flushCacheWithGerritPrefix() throws Exception {
    adminRestSession.post("/config/server/caches/gerrit-accounts/flush").assertOK();
  }

  @Test
  public void flushWebSessionsCache() throws Exception {
    adminRestSession.post("/config/server/caches/web_sessions/flush").assertOK();
  }

  @Test
  public void flushWebSessionsCache_Forbidden() throws Exception {
    projectOperations
        .allProjectsForUpdate()
        .add(allowCapability(GlobalCapability.FLUSH_CACHES).group(REGISTERED_USERS))
        .add(allowCapability(GlobalCapability.VIEW_CACHES).group(REGISTERED_USERS))
        .update();
    try {
      RestResponse r = userRestSession.post("/config/server/caches/accounts/flush");
      r.assertOK();
      r.consume();

      userRestSession.post("/config/server/caches/web_sessions/flush").assertForbidden();
    } finally {
      projectOperations
          .allProjectsForUpdate()
          .remove(capabilityKey(GlobalCapability.FLUSH_CACHES).group(REGISTERED_USERS))
          .remove(capabilityKey(GlobalCapability.VIEW_CACHES).group(REGISTERED_USERS))
          .update();
    }
  }
}