// Copyright 2008 Google Inc.
//
// 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.enterprise.connector.persist;

import com.google.enterprise.connector.instantiator.TypeMap;
import com.google.enterprise.connector.test.ConnectorTestUtils;

import java.io.File;

/**
 * Class to test File System persistent store.
 */
public class FileStoreTest extends PersistentStoreTestAbstract {
  private static final String TEST_DIR_NAME = "testdata/tmp/FileStoreTests";
  private final File baseDirectory  = new File(TEST_DIR_NAME);
  private static final String NAME = "test";

  private TypeMap typeMap;

  @Override
  protected void setUp() throws Exception {
    super.setUp();
    ConnectorTestUtils.deleteAllFiles(baseDirectory);
    assertTrue(ConnectorTestUtils.mkdirs(baseDirectory));
    typeMap = new TypeMap(TEST_DIR_NAME);
    typeMap.init();
    FileStore fileStore = new FileStore();
    fileStore.setTypeMap(typeMap);
    super.store = fileStore;
  }

  @Override
  protected void tearDown() throws Exception {
    try {
      ConnectorTestUtils.deleteAllFiles(baseDirectory);
    } finally {
      super.tearDown();
    }
  }

  @Override
  protected StoreContext getStoreContext(String connectorName,
                                         String typeName) {
    StoreContext context = new StoreContext(connectorName, typeName);
    assertTrue(getConnectorDir(context).exists());
    return context;
  }

  protected File getConnectorDir(StoreContext context) {
    File typeDir = new File(typeMap.getTypesDirectory(), context.getTypeName());
    File connectorDir = new File(typeDir, context.getConnectorName());
    assertTrue(ConnectorTestUtils.mkdirs(connectorDir));
    return connectorDir;
  }

  // Tests connector removal leaves no files behind.
  public void testRemoveConnector() {
    StoreContext storeContext = getStoreContext(NAME, "xyzzy");
    File connectorDir = getConnectorDir(storeContext);
    assertTrue(connectorDir.list().length == 0);
    store.storeConnectorConfiguration(storeContext, getConfiguration());
    store.storeConnectorSchedule(storeContext, getSchedule());
    store.storeConnectorState(storeContext, getCheckpoint());
    // This should have created several storage files.
    assertTrue(connectorDir.list().length == 4);
    store.removeConnectorState(storeContext);
    store.removeConnectorSchedule(storeContext);
    store.removeConnectorConfiguration(storeContext);
    // This should have deleted all the storage files.
    assertTrue(connectorDir.list().length == 0);
  }
}