/**
    * Copyright 2005-2013 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.krms.api.repository.proposition;
  
  import java.io.Serializable;
  import java.util.Collection;
  
  import javax.xml.bind.annotation.XmlAccessType;
  import javax.xml.bind.annotation.XmlAccessorType;
  import javax.xml.bind.annotation.XmlAnyElement;
  import javax.xml.bind.annotation.XmlElement;
  import javax.xml.bind.annotation.XmlRootElement;
  import javax.xml.bind.annotation.XmlType;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.CoreConstants;
  import org.kuali.rice.core.api.mo.AbstractDataTransferObject;
  import org.kuali.rice.core.api.mo.ModelBuilder;
  
  /**
   * Concrete model object implementation of KRMS Proposition Parameter 
   * immutable. 
   * Instances of PropositionParameter can be (un)marshalled to and from XML.
   *
   * @see PropositionParameterContract
   */
  @XmlRootElement(name = PropositionParameter.Constants.ROOT_ELEMENT_NAME)
  @XmlAccessorType(XmlAccessType.NONE)
  @XmlType(name = PropositionParameter.Constants.TYPE_NAME, propOrder = {
  		PropositionParameter.Elements.ID,
  		PropositionParameter.Elements.PROP_ID,
  		PropositionParameter.Elements.VALUE,
  		PropositionParameter.Elements.PARM_TYPE,
  		PropositionParameter.Elements.SEQUENCE,
          CoreConstants.CommonElements.VERSION_NUMBER,
  		CoreConstants.CommonElements.FUTURE_ELEMENTS
  })
  public final class PropositionParameter extends AbstractDataTransferObject implements PropositionParameterContract {
  	private static final long serialVersionUID = 2783959459503209577L;
  
  	@XmlElement(name = Elements.ID, required=true)
  	private String id;
  	@XmlElement(name = Elements.PROP_ID, required=true)
  	private String propId;
  	@XmlElement(name = Elements.VALUE, required=true)
  	private String value;
  	@XmlElement(name = Elements.PARM_TYPE, required=true)
  	private String parameterType;
  	@XmlElement(name = Elements.SEQUENCE, required=true)
  	private Integer sequenceNumber;
      @XmlElement(name = CoreConstants.CommonElements.VERSION_NUMBER, required = false)
      private final Long versionNumber;
  	
  	@SuppressWarnings("unused")
      @XmlAnyElement
      private final Collection<org.w3c.dom.Element> _futureElements = null;
  	
  	 /** 
       * This constructor should never be called.  
       * It is only present for use during JAXB unmarshalling. 
       */
      private PropositionParameter() {
      	this.id = null;
      	this.propId = null;
      	this.value = null;
      	this.parameterType = null;
      	this.sequenceNumber = null;
          this.versionNumber = null;
      }
      
      /**
  	 * Constructs a PropositionParameter from the given builder.  
  	 * This constructor is private and should only ever be invoked from the builder.
  	 * 
  	 * @param builder the Builder from which to construct the PropositionParameter
  	 */
      private PropositionParameter(Builder builder) {
          this.id = builder.getId();
          this.propId = builder.getPropId();
          this.value = builder.getValue();
          this.parameterType = builder.getParameterType();
          this.sequenceNumber = builder.getSequenceNumber();
          this.versionNumber = builder.getVersionNumber();
      }
      
  	@Override
 	public String getId() {
 		return this.id;
 	}
 	
 	@Override
 	public String getPropId() {
 		return this.propId;
 	}
 
 	@Override
 	public String getValue() {
 		return this.value;
 	}
 
 	@Override
 	public String getParameterType() {
 		return this.parameterType;
 	}
 	@Override
 	public Integer getSequenceNumber() {
 		return this.sequenceNumber; 
 	}
 
     @Override
     public Long getVersionNumber() {
         return versionNumber;
     }
         
 	/**
      * This builder is used to construct instances of PropositionParameter.  
      * It enforces the constraints of the {@link PropositionParameterContract}.
      */
     public static class Builder implements PropositionParameterContract, ModelBuilder, Serializable {
     	private static final long serialVersionUID = -6889320709850568900L;
 		
 		private String id;
         private String propId;
         private String value;
         private String parameterType;
         private Integer sequenceNumber;
         private Long versionNumber;
         private PropositionDefinition.Builder proposition;
 
         /**
          * Private constructor for creating a builder with all of it's required attributes.
          * @param id the id value to set, must not be null or blank
          * @param propId the propId value to set, must not be null or blank
          * @param value the value value to set, must not be null or blank
          * @param parameterType the value parameterType to set, must not be null or blank
          * @param sequenceNumber the value sequenceNumber to set, must not be null or blank
          */
         private Builder(String id, String propId, String value, String parameterType, Integer sequenceNumber) {
             setId(id);
             setPropId(propId);
             setValue(value);
             setParameterType(parameterType);
 			setSequenceNumber(sequenceNumber);
         }
 
         /**
          * Create a builder using the given values
          * @param id the id value to set, must not be null or blank
          * @param propId the propId value to set, must not be null or blank
          * @param value the value value to set, must not be null or blank
          * @param parameterType the value parameterType to set, must not be null or blank
          * @param sequenceNumber the value sequenceNumber to set, must not be null or blank
          * @return Builder with the given values set
          */
         public static Builder create(String id, String propId, String value, String parameterType, Integer sequenceNumber) {
         	return new Builder(id, propId, value, parameterType, sequenceNumber);
         }
 
         /**
          * Creates a builder by populating it with data from the given {@link PropositionParameterContract}.
          * 
          * @param contract the contract from which to populate this builder
          * @return an instance of the builder populated with data from the contract
          */
         public static Builder create(PropositionParameterContract contract) {
         	if (contract == null) {
                 throw new IllegalArgumentException("contract is null");
             }
             Builder builder =  new Builder(contract.getId(), contract.getPropId(), contract.getValue(), contract.getParameterType(), contract.getSequenceNumber());
             builder.setVersionNumber(contract.getVersionNumber());
             return builder;
         }
 
 		/**
 		 * Sets the value of the id on this builder to the given value.
 		 * 
 		 * @param id the id value to set, must not be null or blank
 		 * @throws IllegalArgumentException if the id is null or blank
 		 */
         public void setId(String id) {
             if (id != null && StringUtils.isBlank(id)) {
                 throw new IllegalArgumentException("id must not be null or blank");
             }
             this.id = id;
         }
 
         /**
          * Sets the value of the propId on this builder to the given value.
          *
          * @param propId the propId value to set, must not be null or blank
          * @throws IllegalArgumentException if the propId is null or blank
          */
 		public void setPropId(String propId) {
 		    // have to be able to create it with a null propId for chicken/egg reasons.
             if (null != propId && StringUtils.isBlank(propId)) {
                 throw new IllegalArgumentException("propId must be not be null or blank");
             }
 			this.propId = propId;
 		}
 
         /**
          * Sets the value of the value on this builder to the given value.
          *
          * @param value the value value to set, may be null, otherwise must contain non-whitespace
          * @throws IllegalArgumentException if the value is all whitespace characters
          */
 		public void setValue(String value) {
             if (value != null && "".equals(value.trim())) {
                 throw new IllegalArgumentException("value must contain non-whitespace characters");
             }
 			this.value = value;
 		}
 
         /**
          * Sets the value of the parameterType on this builder to the given value.
          *
          * @param parameterType the value parameterType to set, must not be null or blank
          * @throws IllegalArgumentException if the parameterType is null, blank, or invalid
          */
 		public void setParameterType(String parameterType) {
 			if (StringUtils.isBlank(parameterType)){
 	                throw new IllegalArgumentException("parameter type is null or blank");
 			}
 			if (!PropositionParameterType.VALID_TYPE_CODES.contains(parameterType)){
                 throw new IllegalArgumentException("parameter type is invalid");				
 			}
 			// TODO: check against valid values
 			this.parameterType = parameterType;
 		}
 
         /**
          * Sets the value of the sequenceNumber on this builder to the given value.
          *
          * @param sequenceNumber the value sequenceNumber to set, must not be null or blank
          * @throws IllegalArgumentException if the sequenceNumber is null, blank, or invalid
          */
 		public void setSequenceNumber(Integer sequenceNumber) {
 			if (sequenceNumber == null) {
                 throw new IllegalArgumentException("sequenceNumber type is blank");
 			}
 			this.sequenceNumber = sequenceNumber;
 		}
 
         /**
          * Sets the value of the proposition on this builder to the given value.
          *
          * @param proposition the value proposition to set
          */
 		public void setProposition(PropositionDefinition.Builder proposition) {
 		    if (proposition != null && !StringUtils.isBlank(proposition.getId())) {
 		        setPropId(proposition.getId());
 		    }
 		    this.proposition = proposition;
 		}
 
         /**
          * Sets the value of the versionNumber on this builder to the given value.
          *
          * @param versionNumber the value versionNumber to set
          */
         public void setVersionNumber(Long versionNumber){
             this.versionNumber = versionNumber;
         }
         
 		@Override
 		public String getId() {
 			return id;
 		}
 
 		@Override
 		public String getPropId() {
 			return propId;
 		}
 
 		@Override
 		public String getValue() {
 			return value;
 		}
 
 		@Override
 		public String getParameterType() {
 			return parameterType;
 		}
 
 		@Override
 		public Integer getSequenceNumber() {
 			return sequenceNumber;
 		}
 
         @Override
         public Long getVersionNumber() {
             return versionNumber;
         }
 
 		/**
 		 * Builds an instance of a PropositionParameter based on the current state of the builder.
 		 * 
 		 * @return the fully-constructed PropositionParameter
 		 */
         @Override
         public PropositionParameter build() {
             if (proposition == null && StringUtils.isBlank(propId)) {
                 throw new IllegalStateException("either proposition must be non-null or propId must be non-blank");
             }
             return new PropositionParameter(this);
         }
 		
     }
 	
 	/**
 	 * Defines some internal constants used on this class.
 	 */
 	static class Constants {
 		final static String ROOT_ELEMENT_NAME = "PropositionParameter";
 		final static String TYPE_NAME = "PropositionParameterType";
 	}
 	
 	/**
 	 * A private class which exposes constants which define the XML element names to use
 	 * when this object is marshalled to XML.
 	 */
 	public static class Elements {
 		final static String ID = "id";
 		final static String PROP_ID = "propId";
 		final static String VALUE = "value";
 		final static String PARM_TYPE = "parameterType";
 		final static String SEQUENCE = "sequenceNumber";
 	}
 
 }