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/* 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 org.camunda.bpm.engine.rest.dto.batch;

import static java.lang.Boolean.FALSE;
import static java.lang.Boolean.TRUE;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.ws.rs.core.MultivaluedMap;

import org.camunda.bpm.engine.ProcessEngine;
import org.camunda.bpm.engine.batch.BatchQuery;
import org.camunda.bpm.engine.rest.dto.AbstractQueryDto;
import org.camunda.bpm.engine.rest.dto.CamundaQueryParam;
import org.camunda.bpm.engine.rest.dto.converter.BooleanConverter;
import org.camunda.bpm.engine.rest.dto.converter.StringListConverter;

import com.fasterxml.jackson.databind.ObjectMapper;

public class BatchQueryDto extends AbstractQueryDto {

  private static final String SORT_BY_BATCH_ID_VALUE = "batchId";
  private static final String SORT_BY_TENANT_ID_VALUE = "tenantId";

  protected String batchId;
  protected String type;
  protected List tenantIds;
  protected Boolean withoutTenantId;
  protected Boolean suspended;

  private static final List VALID_SORT_BY_VALUES;
  static {
    VALID_SORT_BY_VALUES = new ArrayList();
    VALID_SORT_BY_VALUES.add(SORT_BY_BATCH_ID_VALUE);
    VALID_SORT_BY_VALUES.add(SORT_BY_TENANT_ID_VALUE);
  }

  public BatchQueryDto(ObjectMapper objectMapper, MultivaluedMap queryParameters) {
    super(objectMapper, queryParameters);
  }

  @CamundaQueryParam("batchId")
  public void setBatchId(String batchId) {
    this.batchId = batchId;
  }

  @CamundaQueryParam("type")
  public void setType(String type) {
    this.type = type;
  }

  @CamundaQueryParam(value = "tenantIdIn", converter = StringListConverter.class)
  public void setTenantIdIn(List tenantIds) {
    this.tenantIds = tenantIds;
  }

  @CamundaQueryParam(value = "withoutTenantId", converter = BooleanConverter.class)
  public void setWithoutTenantId(Boolean withoutTenantId) {
    this.withoutTenantId = withoutTenantId;
  }

  @CamundaQueryParam(value="suspended", converter = BooleanConverter.class)
  public void setSuspended(Boolean suspended) {
    this.suspended = suspended;
  }

  protected boolean isValidSortByValue(String value) {
    return VALID_SORT_BY_VALUES.contains(value);
  }

  protected BatchQuery createNewQuery(ProcessEngine engine) {
    return engine.getManagementService().createBatchQuery();
  }

  protected void applyFilters(BatchQuery query) {
    if (batchId != null) {
      query.batchId(batchId);
    }
    if (type != null) {
      query.type(type);
    }
    if (TRUE.equals(withoutTenantId)) {
      query.withoutTenantId();
    }
    if (tenantIds != null && !tenantIds.isEmpty()) {
      query.tenantIdIn(tenantIds.toArray(new String[tenantIds.size()]));
    }
    if (TRUE.equals(suspended)) {
      query.suspended();
    }
    if (FALSE.equals(suspended)) {
      query.active();
    }
  }

  protected void applySortBy(BatchQuery query, String sortBy, Map parameters, ProcessEngine engine) {
    if (sortBy.equals(SORT_BY_BATCH_ID_VALUE)) {
      query.orderById();
    }
    else if (sortBy.equals(SORT_BY_TENANT_ID_VALUE)) {
      query.orderByTenantId();
    }
  }

}