/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.apache.myfaces.tobago.validator;
  
  import org.apache.myfaces.tobago.apt.annotation.Validator;
  import org.apache.myfaces.tobago.util.MessageUtils;
  
  import javax.faces.application.FacesMessage;
  import javax.faces.component.EditableValueHolder;
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  import javax.faces.validator.LengthValidator;
  import javax.faces.validator.ValidatorException;
  import java.util.Objects;
  
  /**
   * <p><strong>SubmittedLengthValidator</strong> is a {@link Validator} that checks
   * the number of characters in the submitted value of the
   * associated component.
   */
  @Validator(id = SubmittedValueLengthValidator.VALIDATOR_ID)
  public class SubmittedValueLengthValidator extends LengthValidator {
    public static final String VALIDATOR_ID = "org.apache.myfaces.tobago.SubmittedValueLength";
  
    private Integer minimum;
    private Integer maximum;
  
    public SubmittedValueLengthValidator() {
    }
  
    public SubmittedValueLengthValidator(final int maximum) {
      setMaximum(maximum);
    }
  
    public SubmittedValueLengthValidator(final int maximum, final int minimum) {
      setMaximum(maximum);
      setMinimum(minimum);
    }
  
    @Override
    public int getMinimum() {
      return minimum != null ? minimum : 0;
    }
  
    @Override
    public void setMinimum(final int minimum) {
      if (minimum > 0) {
        this.minimum = minimum;
      }
    }
  
    @Override
    public int getMaximum() {
      return maximum != null ? maximum : 0;
    }
  
    @Override
    public void setMaximum(final int maximum) {
      if (maximum > 0) {
        this.maximum = maximum;
      }
    }
  
    @Override
    public void validate(final FacesContext facesContext, final UIComponent uiComponent, final Object value)
        throws ValidatorException {
      if (value != null && uiComponent instanceof EditableValueHolder) {
        final String submittedValue = ((EditableValueHolder) uiComponent).getSubmittedValue().toString();
        if (maximum != null && submittedValue.length() > maximum) {
          throw new ValidatorException(MessageUtils.getMessage(
              facesContext, FacesMessage.SEVERITY_ERROR, MAXIMUM_MESSAGE_ID, maximum, uiComponent.getId()));
        }
        if (minimum != null && submittedValue.length() < minimum) {
          throw new ValidatorException(MessageUtils.getMessage(
              facesContext, FacesMessage.SEVERITY_ERROR, MINIMUM_MESSAGE_ID, minimum, uiComponent.getId()));
        }
      }
    }
  
    @Override
    public Object saveState(final FacesContext context) {
      final Object[] values = new Object[2];
     values[0] = maximum;
     values[1] = minimum;
     return values;
   }
 
   @Override
   public void restoreState(final FacesContext context, final Object state) {
     final Object[] values = (Object[]) state;
     maximum = (Integer) values[0];
     minimum = (Integer) values[1];
   }
 
   public boolean equals(final Object o) {
     if (this == o) {
       return true;
     }
     if (o == null || getClass() != o.getClass()) {
       return false;
     }
     if (!super.equals(o)) {
       return false;
     }
 
     final SubmittedValueLengthValidator validator = (SubmittedValueLengthValidator) o;
 
     if (!Objects.equals(maximum, validator.maximum)) {
       return false;
     }
     return Objects.equals(minimum, validator.minimum);
   }
 
   public int hashCode() {
     int result;
     result = minimum != null ? minimum.hashCode() : 0;
     result = 31 * result + (maximum != null ? maximum.hashCode() : 0);
     return result;
   }
 }