/* 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.activiti.engine.impl.form;

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

import org.activiti.bpmn.model.FormProperty;
import org.activiti.bpmn.model.FormValue;
import org.activiti.engine.ActivitiIllegalArgumentException;
import org.activiti.engine.form.AbstractFormType;
import org.apache.commons.lang.StringUtils;


/**
 * @author Tom Baeyens
 */
public class FormTypes {

  protected Map<String, AbstractFormType> formTypes = new HashMap<String, AbstractFormType>();

  public void addFormType(AbstractFormType formType) {
    formTypes.put(formType.getName(), formType);
  }

  public AbstractFormType parseFormPropertyType(FormProperty formProperty) {
    AbstractFormType formType = null;

    if ("date".equals(formProperty.getType()) && StringUtils.isNotEmpty(formProperty.getDatePattern())) {
      formType = new DateFormType(formProperty.getDatePattern());
      
    } else if ("enum".equals(formProperty.getType())) {
      // ACT-1023: Using linked hashmap to preserve the order in which the entries are defined
      Map<String, String> values = new LinkedHashMap<String, String>();
      for (FormValue formValue: formProperty.getFormValues()) {
        values.put(formValue.getId(), formValue.getName());
      }
      formType = new EnumFormType(values);
      
    } else if (StringUtils.isNotEmpty(formProperty.getType())) {
      formType = formTypes.get(formProperty.getType());
      if (formType == null) {
        throw new ActivitiIllegalArgumentException("unknown type '" + formProperty.getType() + "' " + formProperty.getId());
      }
    }
    return formType;
  }
}