/**
    * Copyright 2005-2014 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.krad.datadictionary.validation.constraint;
  
  import org.kuali.rice.krad.datadictionary.parse.BeanTag;
  import org.kuali.rice.krad.datadictionary.parse.BeanTagAttribute;
  import org.kuali.rice.krad.datadictionary.validator.ErrorReport;
  import org.kuali.rice.krad.datadictionary.validator.ValidationTrace;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * A class that implements the required accessor for label keys. This provides a convenient base class
   * from which other constraints can be derived.
   *
   * Only BaseConstraints can have state validation.
   *
   * This class is a direct copy of one that was in Kuali Student.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   * @since 1.1
   */
  @BeanTag(name = "constraint-bean")
  public class BaseConstraint implements Constraint {
      protected String messageNamespaceCode;
      protected String messageComponentCode;
      protected String messageKey;
  
      protected Boolean applyClientSide;
  
      protected List<String> validationMessageParams;
      protected List<String> states;
      protected List<? extends BaseConstraint> constraintStateOverrides;
  
      public BaseConstraint() {
          applyClientSide = Boolean.valueOf(true);
      }
  
      /**
       * Namespace code (often an application or module code) the constraint failure message is associated with
       *
       * <p>
       * Used with the component code and error key for retrieving the constraint. If null,
       * the default namespace code will be used
       * </p>
       *
       * @return String constraint message namespace code
       */
      @BeanTagAttribute(name = "messageNamespaceCode")
      public String getMessageNamespaceCode() {
          return messageNamespaceCode;
      }
  
      /**
       * Setter for the constraint message associated namespace code
       *
       * @param messageNamespaceCode
       */
      public void setMessageNamespaceCode(String messageNamespaceCode) {
          this.messageNamespaceCode = messageNamespaceCode;
      }
  
      /**
       * A code within the namespace that identifies a component or group the constraint message is associated with
       *
       * <p>
       * Used with the namespace and error key for retrieving the constraint text. If null,
       * the default component code will be used
       * </p>
       *
       * @return String message component code
       */
      @BeanTagAttribute(name = "messageComponentCode")
      public String getMessageComponentCode() {
          return messageComponentCode;
      }
  
      /**
       * Setter for the constraint message associated component code
       *
       * @param messageComponentCode
       */
      public void setMessageComponentCode(String messageComponentCode) {
          this.messageComponentCode = messageComponentCode;
      }
 
     /**
      * A key that is used to retrieve the constraint message text (used with the namespace and component
      * code if specified)
      *
      * @return String message key
      */
     @BeanTagAttribute(name = "messageKey")
     public String getMessageKey() {
         return messageKey;
     }
 
     /**
      * Setter for the constraint message key
      *
      * @param messageKey
      */
     public void setMessageKey(String messageKey) {
         this.messageKey = messageKey;
     }
 
     /**
      * If this is true, the constraint should be applied on the client side when the user interacts with
      * a field - if this constraint can be interpreted for client side use. Default is true.
      *
      * @return the applyClientSide
      */
     @BeanTagAttribute(name = "applyClientSide")
     public Boolean getApplyClientSide() {
         return this.applyClientSide;
     }
 
     /**
      * @param applyClientSide the applyClientSide to set
      */
     public void setApplyClientSide(Boolean applyClientSide) {
         this.applyClientSide = applyClientSide;
     }
 
     /**
      * Parameters to be used in the string retrieved by this constraint's messageKey, ordered by number of
      * the param
      *
      * @return the validationMessageParams
      */
     @BeanTagAttribute(name = "validationMessageParams", type = BeanTagAttribute.AttributeType.LISTVALUE)
     public List<String> getValidationMessageParams() {
         return this.validationMessageParams;
     }
 
     /**
      * Parameters to be used in the string retrieved by this constraint's messageKey, ordered by number of
      * the param
      *
      * @return the validationMessageParams
      */
     public String[] getValidationMessageParamsArray() {
         if (this.getValidationMessageParams() != null) {
             return this.getValidationMessageParams().toArray(new String[this.getValidationMessageParams().size()]);
         } else {
             return null;
         }
 
     }
 
     /**
      * @param validationMessageParams the validationMessageParams to set
      */
     public void setValidationMessageParams(List<String> validationMessageParams) {
         this.validationMessageParams = validationMessageParams;
     }
 
     /**
      * A list of states to apply this constraint for, this will effect when a constraint
      * is applied.
      *
      * <p>Each state this constraint is applied for needs to be declared with few additional options:
      * <ul>
      * <li>if NO states are defined for this constraint, this constraint is applied for ALL states</li>
      * <li>if a state is defined with a + symbol, example "state+", then this constraint will be applied for that state
      * and ALL following states</li>
      * <li>if a state is defined as a range with ">", example "state1>state6", then this constraint will be applied for
      * all
      * states from state1 to state6 </li>
      * </ul>
      * These can be mixed and matched, as appropriate, though states using a + symbol should always be the last
      * item of a list (as they imply this state and everything else after).</p>
      *
      * <p>Example state list may be: ["state1", "state3>state5", "state6+"].  In this example, note that this
      * constraint
      * is never applied to "state2" (assuming these example states represent a state order by number)</p>
      *
      * @return the states to apply the constraint on, an empty list if the constraint is applied for all states
      */
     @BeanTagAttribute(name = "states", type = BeanTagAttribute.AttributeType.LISTVALUE)
     public List<String> getStates() {
         if (states == null) {
             states = new ArrayList<String>();
         }
         return states;
     }
 
     /**
      * Set the states for this contraint to be applied on
      *
      * @param states
      */
     public void setStates(List<String> states) {
         this.states = states;
     }
 
     /**
      * Get the list of constraintStateOverrides which represent constraints that will replace THIS constraint
      * when their state is matched during validation.
      * Because of this, constraints added to this list MUST have their states defined.
      *
      * <p>ConstraintStateOverrides always take precedence over this
      * constraint if they apply to the state being evaluated during validation.  These settings have no effect if
      * there is no stateMapping represented on the entry/view being evaluated.
      * </p>
      *
      * @return List of constraint overrides for this constraint
      */
     @BeanTagAttribute(name = "constraintStateOverrides", type = BeanTagAttribute.AttributeType.LISTBEAN)
     public List<? extends BaseConstraint> getConstraintStateOverrides() {
         return constraintStateOverrides;
     }
 
     /**
      * Set the constraintStateOverrides to be used when a state is matched during validation
      *
      * @param constraintStateOverrides
      */
     public void setConstraintStateOverrides(List<? extends BaseConstraint> constraintStateOverrides) {
         if (constraintStateOverrides != null) {
             for (BaseConstraint bc : constraintStateOverrides) {
                 if (!bc.getClass().equals(this.getClass())) {
                     List<Class<?>> superClasses = new ArrayList<Class<?>>();
                     Class<?> o = bc.getClass();
                     while (o != null && !o.equals(BaseConstraint.class)) {
                         superClasses.add(o);
                         o = o.getSuperclass();
                     }
 
                     List<Class<?>> thisSuperClasses = new ArrayList<Class<?>>();
                     o = this.getClass();
                     while (o != null && !o.equals(BaseConstraint.class)) {
                         thisSuperClasses.add(o);
                         o = o.getSuperclass();
                     }
                     superClasses.retainAll(thisSuperClasses);
 
                     if (superClasses.isEmpty()) {
                         throw new RuntimeException("Constraint State Override is not a correct type, type should be " +
                                 this.getClass().toString() + " (or child/parent of that constraint type)");
                     }
                 }
                 if (bc.getStates().isEmpty()) {
                     throw new RuntimeException(
                             "Constraint State Overrides MUST declare the states they apply to.  No states"
                                     + "were declared.");
                 }
             }
         }
         this.constraintStateOverrides = constraintStateOverrides;
     }
 
     /**
      * Validates different requirements of component compiling a series of reports detailing information on errors
      * found in the component.  Used by the RiceDictionaryValidator.
      *
      * @param tracer Record of component's location
      */
     public void completeValidation(ValidationTrace tracer) {
         tracer.addBean("BaseConstraint", getMessageKey());
 
         if (getConstraintStateOverrides() != null) {
             for (int i = 0; i < constraintStateOverrides.size(); i++) {
                 if (constraintStateOverrides.get(i).getStates() == null) {
                     String currentValues[] =
                             {"constraintStateOverrides(" + i + ").messageKey =" + constraintStateOverrides.get(i)
                                     .getMessageKey()};
                     tracer.createError("Constraints set in State Overrides must have there states property set",
                             currentValues);
                 }
                 constraintStateOverrides.get(i).completeValidation(tracer.getCopy());
             }
         }
 
         if (getMessageKey() == null) {
             String currentValues[] = {"messageKey =" + getMessageKey()};
             tracer.createWarning("Message key is not set", currentValues);
             ErrorReport error = new ErrorReport(ErrorReport.WARNING);
         }
     }
 }