/*
 * Copyright 2010-2012 Luca Garulli (l.garulli--at--orientechnologies.com)
 *
 * 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.orientechnologies.orient.server.network.protocol.http.command.get;

import java.util.Collection;

import com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.index.OIndex;
import com.orientechnologies.orient.server.network.protocol.http.OHttpRequest;
import com.orientechnologies.orient.server.network.protocol.http.OHttpResponse;
import com.orientechnologies.orient.server.network.protocol.http.OHttpUtils;
import com.orientechnologies.orient.server.network.protocol.http.command.OServerCommandDocumentAbstract;

public class OServerCommandGetIndex extends OServerCommandDocumentAbstract {
  private static final String[] NAMES = { "GET|index/*" };

  @SuppressWarnings("unchecked")
  @Override
  public boolean execute(final OHttpRequest iRequest, OHttpResponse iResponse) throws Exception {
    final String[] urlParts = checkSyntax(iRequest.url, 3, "Syntax error: index/<database>/<index-name>/<key>");

    iRequest.data.commandInfo = "Index get";

    ODatabaseDocumentTx db = null;

    try {
      db = getProfiledDatabaseInstance(iRequest);

      final OIndex<?> index = db.getMetadata().getIndexManager().getIndex(urlParts[2]);
      if (index == null)
        throw new IllegalArgumentException("Index name '" + urlParts[2] + "' not found");

      final Object content = index.get(urlParts[3]);

      if (content == null)
        iResponse.send(OHttpUtils.STATUS_NOTFOUND_CODE, OHttpUtils.STATUS_NOTFOUND_DESCRIPTION, OHttpUtils.CONTENT_TEXT_PLAIN,
            null, null);
      else {
        final StringBuilder buffer = new StringBuilder();
        buffer.append('[');

        if (content instanceof Collection<?>) {
          Collection<OIdentifiable> collection = (Collection<OIdentifiable>) content;
          for (OIdentifiable item : collection) {
            buffer.append(item.getRecord().toJSON());
          }
        } else
          buffer.append(((OIdentifiable) content).getRecord().toJSON());

        buffer.append(']');

        iResponse.send(OHttpUtils.STATUS_OK_CODE, "OK", OHttpUtils.CONTENT_TEXT_PLAIN, buffer.toString(), null);
      }
    } finally {
      if (db != null)
        db.close();
    }
    return false;
  }

  @Override
  public String[] getNames() {
    return NAMES;
  }
}
