/**
    * 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.kew.rule;
  
  import org.apache.commons.lang.StringUtils;
  import org.hibernate.annotations.Fetch;
  import org.hibernate.annotations.FetchMode;
  import org.hibernate.annotations.GenericGenerator;
  import org.hibernate.annotations.Parameter;
  import org.joda.time.DateTime;
  import org.kuali.rice.core.api.util.RiceConstants;
  import org.kuali.rice.kew.api.rule.RuleContract;
  import org.kuali.rice.kew.api.rule.RuleExtension;
  import org.kuali.rice.kew.api.util.CodeTranslator;
  import org.kuali.rice.kew.doctype.bo.DocumentType;
  import org.kuali.rice.kew.lookupable.MyColumns;
  import org.kuali.rice.kew.routeheader.DocumentContent;
  import org.kuali.rice.kew.rule.bo.RuleAttribute;
  import org.kuali.rice.kew.rule.bo.RuleTemplateAttributeBo;
  import org.kuali.rice.kew.rule.bo.RuleTemplateBo;
  import org.kuali.rice.kew.rule.service.RuleServiceInternal;
  import org.kuali.rice.kew.rule.xmlrouting.GenericXMLRuleAttribute;
  import org.kuali.rice.kew.service.KEWServiceLocator;
  import org.kuali.rice.kew.api.KewApiConstants;
  import org.kuali.rice.kim.api.services.KimApiServiceLocator;
  import org.kuali.rice.kim.impl.group.GroupBo;
  import org.kuali.rice.kim.impl.identity.PersonImpl;
  import org.kuali.rice.kns.web.ui.Field;
  import org.kuali.rice.kns.web.ui.Row;
  import org.kuali.rice.krad.bo.PersistableBusinessObjectBase;
  
  import javax.persistence.CascadeType;
  import javax.persistence.Column;
  import javax.persistence.Entity;
  import javax.persistence.FetchType;
  import javax.persistence.GeneratedValue;
  import javax.persistence.Id;
  import javax.persistence.JoinColumn;
  import javax.persistence.ManyToOne;
  import javax.persistence.OneToMany;
  import javax.persistence.OneToOne;
  import javax.persistence.Table;
  import javax.persistence.Transient;
  import java.sql.Timestamp;
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  
  /*import org.kuali.rice.kim.api.group.Group;*/
  
  
  /**
   * A model bean for a Rule within the KEW rules engine.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  @Entity
  @Table(name="KREW_RULE_T")
  //@Sequence(name="KREW_RTE_TMPL_S", property="id")
  public class RuleBaseValues extends PersistableBusinessObjectBase implements RuleContract {
  
      private static final long serialVersionUID = 6137765574728530156L;
      @Id
      @GeneratedValue(generator="KREW_RTE_TMPL_S")
  	@GenericGenerator(name="KREW_RTE_TMPL_S",strategy="org.hibernate.id.enhanced.SequenceStyleGenerator",parameters={
  			@Parameter(name="sequence_name",value="KREW_RTE_TMPL_S"),
  			@Parameter(name="value_column",value="id")
  	})
  	@Column(name="RULE_ID")
      private String id;
      /**
       * Unique Rule name
       */
      @Column(name="NM")
  	private String name;
      @Column(name="RULE_TMPL_ID", insertable=false, updatable=false)
  	private String ruleTemplateId;
      @Column(name="PREV_VER_RULE_ID")
  	private String previousRuleId;
      @Column(name="ACTV_IND")
  	private boolean active = true;
      @Column(name="RULE_BASE_VAL_DESC")
  	private String description;
     @Column(name="DOC_TYP_NM")
 	private String docTypeName;
     @Column(name="DOC_HDR_ID")
 	private String documentId;
 	@Column(name="FRM_DT")
 	private Timestamp fromDateValue;
 	@Column(name="TO_DT")
 	private Timestamp toDateValue;
 	@Column(name="DACTVN_DT")
 	private Timestamp deactivationDate;
     @Column(name="CUR_IND")
 	private Boolean currentInd = Boolean.TRUE;
     @Column(name="RULE_VER_NBR")
 	private Integer versionNbr = new Integer(0);
     @Column(name="FRC_ACTN")
 	private boolean forceAction;
     @Fetch(value = FetchMode.SELECT)
     @OneToMany(fetch=FetchType.EAGER,cascade={CascadeType.PERSIST, CascadeType.REMOVE, CascadeType.MERGE},mappedBy="ruleBaseValues")
 	private List<RuleResponsibilityBo> ruleResponsibilities;
     @Fetch(value = FetchMode.SELECT)
     @OneToMany(fetch=FetchType.EAGER,cascade={CascadeType.PERSIST, CascadeType.REMOVE, CascadeType.MERGE},mappedBy="ruleBaseValues")
 	private List<RuleExtensionBo> ruleExtensions;
     @ManyToOne(fetch=FetchType.EAGER)
 	@JoinColumn(name="RULE_TMPL_ID")
 	private RuleTemplateBo ruleTemplate;
     @OneToOne(fetch=FetchType.EAGER, cascade={CascadeType.PERSIST, CascadeType.REMOVE, CascadeType.MERGE})
 	@JoinColumn(name="RULE_EXPR_ID")
 	private RuleExpressionDef ruleExpressionDef;
     @Transient
     private RuleBaseValues previousVersion;
     @Column(name="ACTVN_DT")
 	private Timestamp activationDate;
     @Column(name="DLGN_IND")
     private Boolean delegateRule = Boolean.FALSE;
     /**
      * Indicator that signifies that this rule is a defaults/template rule which contains
      * template-defined rule defaults for other rules which use the associated template
      */
     @Column(name="TMPL_RULE_IND")
     private Boolean templateRuleInd = Boolean.FALSE;
 
     // required to be lookupable
     @Transient
     private String returnUrl;
     @Transient
     private String destinationUrl;
     @Transient
     private MyColumns myColumns;
     @Transient
     private List<PersonRuleResponsibility> personResponsibilities = new ArrayList<PersonRuleResponsibility>();
     @Transient
     private List<GroupRuleResponsibility> groupResponsibilities = new ArrayList<GroupRuleResponsibility>();
     @Transient
     private List<RoleRuleResponsibility> roleResponsibilities = new ArrayList<RoleRuleResponsibility>();
     @Transient
     private Map<String, String> fieldValues;
     @Transient
     private String groupReviewerName;
     @Transient
     private String groupReviewerNamespace;
     @Transient
     private String personReviewer;
     @Transient
     private String personReviewerType;
 
     public RuleBaseValues() {
         ruleResponsibilities = new ArrayList<RuleResponsibilityBo>();
         ruleExtensions = new ArrayList<RuleExtensionBo>();
         /*personResponsibilities = new AutoPopulatingList<PersonRuleResponsibility>(PersonRuleResponsibility.class);
         groupResponsibilities = new AutoPopulatingList<GroupRuleResponsibility>(GroupRuleResponsibility.class);
         roleResponsibilities = new AutoPopulatingList<RoleRuleResponsibility>(RoleRuleResponsibility.class);*/
         fieldValues = new HashMap<String, String>();
     }
 
     /**
      * @return the rule expression definition for this rule, if defined
      */
     public RuleExpressionDef getRuleExpressionDef() {
         return ruleExpressionDef;
     }
 
     /**
      * @param ruleExpressionDef the rule expression definition to set for this rule
      */
     public void setRuleExpressionDef(RuleExpressionDef ruleExpressionDef) {
         this.ruleExpressionDef = ruleExpressionDef;
     }
 
     public String getRuleTemplateName() {
         if (ruleTemplate != null) {
             return ruleTemplate.getName();
         }
         return null;
     }
 
     public RuleBaseValues getPreviousVersion() {
         if (previousVersion == null && previousRuleId != null) {
             RuleServiceInternal ruleService = (RuleServiceInternal) KEWServiceLocator.getService(KEWServiceLocator.RULE_SERVICE);
             return ruleService.findRuleBaseValuesById(previousRuleId);
         }
         return previousVersion;
     }
 
     public void setPreviousVersion(RuleBaseValues previousVersion) {
         this.previousVersion = previousVersion;
     }
 
     public RuleResponsibilityBo getResponsibility(int index) {
         while (getRuleResponsibilities().size() <= index) {
             RuleResponsibilityBo ruleResponsibility = new RuleResponsibilityBo();
             ruleResponsibility.setRuleBaseValues(this);
             getRuleResponsibilities().add(ruleResponsibility);
         }
         return (RuleResponsibilityBo) getRuleResponsibilities().get(index);
     }
 
     public RuleExtensionBo getRuleExtension(int index) {
         while (getRuleExtensions().size() <= index) {
             getRuleExtensions().add(new RuleExtensionBo());
         }
         return (RuleExtensionBo) getRuleExtensions().get(index);
     }
 
     public RuleExtensionValue getRuleExtensionValue(String key) {
         for (Iterator iter = getRuleExtensions().iterator(); iter.hasNext();) {
             RuleExtensionBo ruleExtension = (RuleExtensionBo) iter.next();
             for (Iterator iterator = ruleExtension.getExtensionValues().iterator(); iterator.hasNext();) {
                 RuleExtensionValue ruleExtensionValue = (RuleExtensionValue) iterator.next();
                 if (ruleExtensionValue.getKey().equals(key)) {
                     return ruleExtensionValue;
                 }
             }
         }
         return null;
     }
 
     public RuleExtensionValue getRuleExtensionValue(String ruleTemplateAttributeId, String key) {
         for (Iterator iter = getRuleExtensions().iterator(); iter.hasNext();) {
             RuleExtensionBo ruleExtension = (RuleExtensionBo) iter.next();
             if (ruleExtension.getRuleTemplateAttributeId().equals(ruleTemplateAttributeId)) {
                 for (Iterator iterator = ruleExtension.getExtensionValues().iterator(); iterator.hasNext();) {
                     RuleExtensionValue ruleExtensionValue = (RuleExtensionValue) iterator.next();
                     if (ruleExtensionValue.getKey().equals(key)) {
                         return ruleExtensionValue;
                     }
                 }
             }
         }
         return null;
     }
 
     public String getPreviousRuleId() {
         return previousRuleId;
     }
 
     public void setPreviousRuleId(String previousVersion) {
         this.previousRuleId = previousVersion;
     }
 
     public void addRuleResponsibility(RuleResponsibilityBo ruleResponsibility) {
         addRuleResponsibility(ruleResponsibility, new Integer(getRuleResponsibilities().size()));
     }
 
     public void addRuleResponsibility(RuleResponsibilityBo ruleResponsibility, Integer counter) {
         boolean alreadyAdded = false;
         int location = 0;
         if (counter != null) {
             for (RuleResponsibilityBo ruleResponsibilityRow : getRuleResponsibilities()) {
                 if (counter.intValue() == location) {
                     ruleResponsibilityRow.setPriority(ruleResponsibility.getPriority());
                     ruleResponsibilityRow.setActionRequestedCd(ruleResponsibility.getActionRequestedCd());
                     ruleResponsibilityRow.setVersionNumber(ruleResponsibility.getVersionNumber());
                     ruleResponsibilityRow.setRuleBaseValuesId(ruleResponsibility.getRuleBaseValuesId());
                     ruleResponsibilityRow.setRuleResponsibilityName(ruleResponsibility.getRuleResponsibilityName());
                     ruleResponsibilityRow.setRuleResponsibilityType(ruleResponsibility.getRuleResponsibilityType());
                     //ruleResponsibilityRow.setDelegationRules(ruleResponsibility.getDelegationRules());
                     ruleResponsibilityRow.setApprovePolicy(ruleResponsibility.getApprovePolicy());
                     alreadyAdded = true;
                 }
                 location++;
             }
         }
         if (!alreadyAdded) {
             getRuleResponsibilities().add(ruleResponsibility);
         }
     }
 
     public RuleTemplateBo getRuleTemplate() {
         return ruleTemplate;
     }
 
     public void setRuleTemplate(RuleTemplateBo ruleTemplate) {
         this.ruleTemplate = ruleTemplate;
     }
 
     public String getRuleTemplateId() {
         return ruleTemplateId;
     }
 
     public void setRuleTemplateId(String ruleTemplateId) {
         this.ruleTemplateId = ruleTemplateId;
     }
 
     public DocumentType getDocumentType() {
     	return KEWServiceLocator.getDocumentTypeService().findByName(getDocTypeName());
     }
 
     public String getDocTypeName() {
         return docTypeName;
     }
 
     public void setDocTypeName(String docTypeName) {
         this.docTypeName = docTypeName;
     }
 
     public List<RuleExtensionBo> getRuleExtensions() {
         return ruleExtensions;
     }
 
     public Map<String, String> getRuleExtensionMap() {
         Map<String, String> extensions = new HashMap<String, String>();
         for (RuleExtensionBo ext : this.getRuleExtensions()) {
             for (RuleExtensionValue value : ext.getExtensionValues()) {
                 extensions.put(value.getKey(), value.getValue());
             }
         }
         return extensions;
     }
 
     public void setRuleExtensions(List<RuleExtensionBo> ruleExtensions) {
         this.ruleExtensions = ruleExtensions;
     }
 
     public List<RuleResponsibilityBo> getRuleResponsibilities() {
         return this.ruleResponsibilities;
     }
 
     public void setRuleResponsibilities(List<RuleResponsibilityBo> ruleResponsibilities) {
         this.ruleResponsibilities = ruleResponsibilities;
     }
 
     public RuleResponsibilityBo getResponsibility(Long ruleResponsibilityKey) {
         for (Iterator iterator = getRuleResponsibilities().iterator(); iterator.hasNext();) {
             RuleResponsibilityBo responsibility = (RuleResponsibilityBo) iterator.next();
             if (responsibility.getId() != null
                     && responsibility.getId().equals(ruleResponsibilityKey)) {
                 return responsibility;
             }
         }
         return null;
     }
 
     public void removeResponsibility(int index) {
         getRuleResponsibilities().remove(index);
     }
 
     @Override
     public boolean isActive() {
         return active;
     }
 
     public void setActive(boolean active) {
         this.active = active;
     }
 
     public String getActiveIndDisplay() {
         return CodeTranslator.getActiveIndicatorLabel(isActive());
     }
 
     public Boolean getCurrentInd() {
         return currentInd;
     }
 
     public void setCurrentInd(Boolean currentInd) {
         this.currentInd = currentInd;
     }
 
     public Timestamp getFromDateValue() {
         return fromDateValue;
     }
     
     @Override
     public DateTime getFromDate() {
         if (this.fromDateValue == null) {
             return null;
         }
         return new DateTime(this.fromDateValue.getTime());
     }
 
     public void setFromDateValue(Timestamp fromDateValue) {
         this.fromDateValue = fromDateValue;
     }
 
     public String getDescription() {
         return description;
     }
 
     public void setDescription(String description) {
         this.description = description;
     }
 
     public String getId() {
         return id;
     }
 
     public void setId(String id) {
         this.id = id;
     }
 
     public Timestamp getToDateValue() {
         return toDateValue;
     }
     
     @Override
     public DateTime getToDate() {
         if (this.toDateValue == null) {
             return null;
         }
         return new DateTime(this.toDateValue.getTime());
     }
 
     public void setToDateValue(Timestamp toDateValue) {
         this.toDateValue = toDateValue;
     }
 
     public Integer getVersionNbr() {
         return versionNbr;
     }
 
     public void setVersionNbr(Integer versionNbr) {
         this.versionNbr = versionNbr;
     }
 
     public String getReturnUrl() {
         return returnUrl;
     }
 
     public void setReturnUrl(String returnUrl) {
         this.returnUrl = returnUrl;
     }
 
     public String getFromDateString() {
         if (this.fromDateValue != null) {
             return RiceConstants.getDefaultDateFormat().format(this.fromDateValue);
         }
         return null;
     }
 
     public String getToDateString() {
         if (this.toDateValue != null) {
             return RiceConstants.getDefaultDateFormat().format(this.toDateValue);
         }
         return null;
     }
 
     @Override
     public boolean isForceAction() {
         return forceAction;
     }
 
     public void setForceAction(boolean forceAction) {
         this.forceAction = forceAction;
     }
 
     public boolean isActive(Date date) {
     	boolean isAfterFromDate = getFromDateValue() == null || date.after(getFromDateValue());
     	boolean isBeforeToDate = getToDateValue() == null || date.before(getToDateValue());
     	return isActive() && isAfterFromDate && isBeforeToDate;
     }
 
     public boolean isMatch(DocumentContent docContent) {
         for (RuleTemplateAttributeBo ruleTemplateAttribute : getRuleTemplate().getActiveRuleTemplateAttributes()) {
             if (!ruleTemplateAttribute.isWorkflowAttribute()) {
                 continue;
             }
             WorkflowRuleAttribute routingAttribute = (WorkflowRuleAttribute) ruleTemplateAttribute.getWorkflowAttribute();
 
             RuleAttribute ruleAttribute = ruleTemplateAttribute.getRuleAttribute();
             if (ruleAttribute.getType().equals(KewApiConstants.RULE_XML_ATTRIBUTE_TYPE)) {
                 ((GenericXMLRuleAttribute) routingAttribute).setExtensionDefinition(RuleAttribute.to(ruleAttribute));
             }
             String className = ruleAttribute.getResourceDescriptor();
             List<RuleExtension> editedRuleExtensions = new ArrayList<RuleExtension>();
             for (RuleExtensionBo extension : getRuleExtensions()) {
                 if (extension.getRuleTemplateAttribute().getRuleAttribute().getResourceDescriptor().equals(className)) {
                     editedRuleExtensions.add(RuleExtensionBo.to(extension));
                 }
             }
             if (!routingAttribute.isMatch(docContent, editedRuleExtensions)) {
                 return false;
             }
         }
         return true;
     }
 
     public RuleResponsibilityBo findResponsibility(String roleName) {
         for (Iterator iter = getRuleResponsibilities().iterator(); iter.hasNext();) {
             RuleResponsibilityBo resp = (RuleResponsibilityBo) iter.next();
             if (KewApiConstants.RULE_RESPONSIBILITY_ROLE_ID.equals(resp.getRuleResponsibilityType())
                     && roleName.equals(resp.getRuleResponsibilityName())) {
                 return resp;
             }
         }
         return null;
     }
 
     public String getDocumentId() {
         return documentId;
     }
 
     public void setDocumentId(String documentId) {
         this.documentId = documentId;
     }
 
     public Boolean getDelegateRule() {
         return delegateRule;
     }
 
     public void setDelegateRule(Boolean isDelegateRule) {
         this.delegateRule = isDelegateRule;
     }
 
     public Timestamp getActivationDate() {
         return activationDate;
     }
 
     public void setActivationDate(Timestamp activationDate) {
         this.activationDate = activationDate;
     }
 
     public MyColumns getMyColumns() {
         return myColumns;
     }
 
     public void setMyColumns(MyColumns additionalColumns) {
         this.myColumns = additionalColumns;
     }
 
     public String getDestinationUrl() {
         return destinationUrl;
     }
 
     public void setDestinationUrl(String destinationUrl) {
         this.destinationUrl = destinationUrl;
     }
 
     public Timestamp getDeactivationDate() {
         return deactivationDate;
     }
 
     public void setDeactivationDate(Timestamp deactivationDate) {
         this.deactivationDate = deactivationDate;
     }
 
     /**
      * @return whether this is a defaults/template rule
      */
     public Boolean getTemplateRuleInd() {
         return templateRuleInd;
     }
 
     /**
      * @param templateRuleInd whether this is a defaults/template rule
      */
     public void setTemplateRuleInd(Boolean templateRuleInd) {
         this.templateRuleInd = templateRuleInd;
     }
 
     /**
      * Get the rule name
      * @return the rule name
      */
     public String getName() {
         return name;
     }
 
     /**
      * Set the rule name
      * @param name the rule name
      */
     public void setName(String name) {
         this.name = name;
     }
 
 	public List<PersonRuleResponsibility> getPersonResponsibilities() {
 		return this.personResponsibilities;
 	}
 
 	public void setPersonResponsibilities(List<PersonRuleResponsibility> personResponsibilities) {
 		this.personResponsibilities = personResponsibilities;
 	}
 
 	public List<GroupRuleResponsibility> getGroupResponsibilities() {
 		return this.groupResponsibilities;
 	}
 
 	public void setGroupResponsibilities(List<GroupRuleResponsibility> groupResponsibilities) {
 		this.groupResponsibilities = groupResponsibilities;
 	}
 
 	public List<RoleRuleResponsibility> getRoleResponsibilities() {
 		return this.roleResponsibilities;
 	}
 
 	public void setRoleResponsibilities(List<RoleRuleResponsibility> roleResponsibilities) {
 		this.roleResponsibilities = roleResponsibilities;
 	}
 
 	/**
 	 * @return the fieldValues
 	 */
 	public Map<String, String> getFieldValues() {
 		return this.fieldValues;
 	}
 
 	/**
 	 * @param fieldValues the fieldValues to set
 	 */
 	public void setFieldValues(Map<String, String> fieldValues) {
 		this.fieldValues = fieldValues;
 	}
 
     public String getGroupReviewerName() {
         return this.groupReviewerName;
     }
 
     public String getGroupReviewerNamespace() {
         return this.groupReviewerNamespace;
     }
 
     public String getPersonReviewer() {
         return this.personReviewer;
     }
 
     public void setGroupReviewerName(String groupReviewerName) {
         this.groupReviewerName = groupReviewerName;
     }
 
     public void setGroupReviewerNamespace(String groupReviewerNamespace) {
         this.groupReviewerNamespace = groupReviewerNamespace;
     }
 
     public void setPersonReviewer(String personReviewer) {
         this.personReviewer = personReviewer;
     }
 
     public GroupBo getGroupBo() {
         GroupBo groupBo = null;
         if (StringUtils.isNotBlank(getGroupReviewerName())) {
             if ( groupBo == null ) {
                 groupBo = GroupBo.from(KimApiServiceLocator.getGroupService().getGroupByNamespaceCodeAndName(
                         getGroupReviewerNamespace(), getGroupReviewerName()));
             }
         }
         return groupBo;
     }
 
     public PersonImpl getPersonImpl() {
         return new PersonImpl();
     }
 
     public String getPersonReviewerType() {
         return this.personReviewerType;
     }
 
     public void setPersonReviewerType(String personReviewerType) {
         this.personReviewerType = personReviewerType;
     }
 
         /**
      * Converts a mutable bo to its immutable counterpart
      * @param bo the mutable business object
      * @return the immutable object
      */
     public static org.kuali.rice.kew.api.rule.Rule to(RuleBaseValues bo) {
         if (bo == null) {
             return null;
         }
         return org.kuali.rice.kew.api.rule.Rule.Builder.create(bo).build();
     }
 }