ApexClass::::
public class ActiveContactEditController{

    public Id recordTypeId{get;set;}
    public Id contactId{get;set;}
    public Contact con;
    public String profileName{get;set;}
    public Contact con1{get;set;}
    private ApexPages.StandardController sc;
    public Boolean editFlag{get; set;}
    public set<String> setOfUserPermissionSets{get;set;}
    public string mulId;
    public string mulId2;
    private List<sObject> duplicateRecords;
    private final Contact contact;
    public boolean hasDuplicateResult{get;set;}
    
    public boolean save_dup {get;set;}
    public boolean save_dup_ignore {get;set;}
    public boolean save_dup_ignorenew {get;set;}
    public boolean Test {get;set;}
        
    public ActiveContactEditController(ApexPages.StandardController controller){
    
    save_dup = false;
    save_dup_ignore = false;
    save_dup_ignorenew = false;
    Test = true;
    
     // Define the values for the contact you’re processing based on its ID
        Id id = ApexPages.currentPage().getParameters().get('id');
        this.contact = (id == null) ? new Contact() :
            [SELECT Id, FirstName, LastName
             FROM Contact WHERE Id = :id];
       
        // Initialize empty list of potential duplicate records
        this.duplicateRecords = new List<sObject>();
        this.hasDuplicateResult = false;
    
    
        this.sc = controller;
        con1 = new Contact();
       
         
        List<Schema.RecordTypeInfo> infos = Schema.SObjectType.Contact.RecordTypeInfos;
        Id defaultRecordTypeId;
        editFlag = false;
        //check each one
        for (Schema.RecordTypeInfo info : infos) {
          
          if (info.DefaultRecordTypeMapping) {
            
            defaultRecordTypeId = info.RecordTypeId;
            
            mulId = defaultRecordTypeId;
            mulId2 = mulId.substring(0,mulId.length()-3);
            
            system.debug('defaultRecordTypeId ' + mulId2);
          }
        }

        if(Apexpages.currentpage().getparameters().get('RecordType') != NULL){
        
            recordTypeId = Apexpages.currentpage().getparameters().get('RecordType');
            system.debug('******* recordTypeId ******  ' + recordTypeId );
           
            if(String.valueOf(recordTypeId).contains(Label.Active_RecordTypeID))
            con1.Active__c = true;
            
            if(String.valueOf(recordTypeId).contains(Label.SM_Customer_RecordTypeID))
            con1.Small_Market__c = true;
         
            
        }
        if(Apexpages.currentpage().getparameters().get('Id') != NULL){
        
            contactId = Apexpages.currentpage().getparameters().get('Id');
            system.debug('contactId ' + contactId );
            con = [SELECT RecordtypeId from contact where id =: contactId];
            recordTypeId = con.RecordtypeId;
            
           
            
            if(contactId != null)
            editFlag = true;
        }
        if(recordTypeId == NULL){
        
            //recordTypeId = defaultRecordTypeId;
            recordTypeId  = String.valueOf(mulId2) ;
            system.debug('testing mulid '+recordTypeId  );
            system.debug('testing mulid '+mulId2);
            con1.Active__c = true;
            con1.Customer_Type__c = 'Active-Primary';
            con1.Input_Type__c = 'Manual';
            system.debug('con1.Customer_Type__c'+con1.Customer_Type__c);
            system.debug('con1.Input_Type__c'+con1.Input_Type__c);
        }
        
    }
    
    
    public List<sObject> getDuplicateRecords() {
        return this.duplicateRecords;
    }
 
    public boolean getRedirect(){
 
        if((recordTypeId != Label.Active_RecordTypeID || recordTypeId != Label.SM_Customer_RecordTypeID) && contactId == NULL){
        
            return true;
        }
        else{
        
            return false;
        }
    }
    
    public PageReference nextPage(){
    
        String ContactName;
        String relatedToFieldId = 'CF'+Label.Related_to_field_id+'_lkid';
        Id parentId = Apexpages.currentpage().getparameters().get(relatedToFieldId);
        if(parentId!= NULL){
        Contact conObj = [SELECT Salutation,FirstName,MiddleName, LastName from Contact where id =: parentId];
         /*** Forming Contact fullname  to use in URL ***/                  
         String Salutation = '';
         String FirstName = '';
         String MiddleName = '';
         String LastName = '';
         
         if(conObj.Salutation != NULL )
          Salutation = conObj.Salutation + '+';
         
         if(conObj.FirstName != NULL )
          FirstName = conObj.FirstName + '+';
        
         if(conObj.MiddleName != NULL )
          MiddleName = conObj.MiddleName + '+';
          
          LastName = conobj.LastName;
          
          ContactName = Salutation + FirstName + MiddleName + LastName;
         }
        system.debug('recordTypeId '+ recordTypeId );
        // Added '!String.valueOf(recordTypeId).contains(Label.SM_Customer_RecordTypeID)' for small Market Wave 1
        if(recordTypeId != NULL && parentId != NULL && (!String.valueOf(recordTypeId).contains(Label.Active_RecordTypeID) && !String.valueOf(recordTypeId).contains(Label.SM_Customer_RecordTypeID) ) && !String.valueOf(recordTypeId).contains(Label.Active_Retiree_RecordTypeId) && contactId == NULL){
        
            system.debug('Error1');
            PageReference pRef = new PageReference('/003/e?RecordType='+recordTypeId+'&CF'+Label.Related_to_field_id+'='
              +ContactName+'&'+relatedToFieldId+'='+parentId + '&nooverride=1');

            return pRef;
        }
        
        // Added '!String.valueOf(recordTypeId).contains(Label.SM_Customer_RecordTypeID)' for small Market Wave 1
        else if(recordTypeId!= NULL && parentId == NULL && (!String.valueOf(recordTypeId).contains(Label.Active_RecordTypeID) && !String.valueOf(recordTypeId).contains(Label.SM_Customer_RecordTypeID)) && !String.valueOf(mulId2).contains(Label.Active_Retiree_RecordTypeId) && contactId == NULL){
          system.debug('Error2 ' + recordTypeId);
         
          PageReference pRef = new PageReference('/003/e?RecordType='+recordTypeId+'&nooverride=1');
          
          return pRef;
        }
        
        // Added '!String.valueOf(recordTypeId).contains(Label.SM_Customer_RecordTypeID)' for small Market Wave 1
        if(contactId != NULL && (!String.valueOf(recordTypeId).contains(Label.Active_RecordTypeID) && !String.valueOf(recordTypeId).contains(Label.SM_Customer_RecordTypeID)) && !String.valueOf(recordTypeId).contains(Label.Active_Retiree_RecordTypeId)){
         system.debug('Error3');
            PageReference pRef = new PageReference('/'+contactId+'/e?&nooverride=1'+'%2F'+contactId+'&retURL='+contactId);
            return pRef;
        }
        else if(contactId != NULL && String.valueOf(recordTypeId).contains(Label.Active_Retiree_RecordTypeId) && (setOfUserPermissionSets.contains('MM_Read_Only') || setOfUserPermissionSets.contains('MM_RET_Account_Manager') || setOfUserPermissionSets.contains('MM_RET_BC') || setOfUserPermissionSets.contains('MM_RET_Claims_Analyst') || setOfUserPermissionSets.contains('MM_RET_Claims_Manager') || setOfUserPermissionSets.contains('MM_RET_Manager') || setOfUserPermissionSets.contains('MM_RET_Quality_Assurance') || setOfUserPermissionSets.contains('MM_RET_Team_Lead') || setOfUserPermissionSets.contains('MM_SM_OSD'))){
         system.debug('Error4');
            PageReference pRef = new PageReference('/'+contactId+'/e?&nooverride=1&retURL=/'+contactId);
            return pRef;
        }
        else if(contactId == NULL && String.valueOf(mulId).contains(Label.Active_Retiree_RecordTypeId) && (setOfUserPermissionSets.contains('MM_Read_Only') || setOfUserPermissionSets.contains('MM_RET_Account_Manager') || setOfUserPermissionSets.contains('MM_RET_BC') || setOfUserPermissionSets.contains('MM_RET_Claims_Analyst') || setOfUserPermissionSets.contains('MM_RET_Claims_Manager') || setOfUserPermissionSets.contains('MM_RET_Manager') || setOfUserPermissionSets.contains('MM_RET_Quality_Assurance') || setOfUserPermissionSets.contains('MM_RET_Team_Lead') || setOfUserPermissionSets.contains('MM_SM_OSD'))){
         system.debug('Error5');
            PageReference pRef = new PageReference('/003/e?RecordType='+recordTypeId+'&nooverride=1&retURL=/003/o');
            return pRef;
        }
        else{
         system.debug('Error6');
            return NULL;
        }
    }

    public boolean validateDobandsocial(Contact conObj){
        Id acctId =conObj.AccountId;
        Date birthDt= conObj.DOB__c;
        String ssn = conObj.Social_Security_Number__c;
        Account accObj = [SELECT Id,Small_Market__c,Active__c,Client_Type__c from Account where id =: acctId];
        If (accObj.Active__c && (String.isBlank(String.valueOf(conObj.DOB__c)) || String.isBlank(conObj.Social_Security_Number__c))){
            return false;
        }else if (accObj.Small_Market__c && accObj.Client_Type__c != 'Brokerage' && (String.isBlank(String.valueOf(conObj.DOB__c)) || String.isBlank(conObj.Social_Security_Number__c))) {
            return false;
        }else if (accObj.Small_Market__c && accObj.Client_Type__c == 'Brokerage' && (String.isBlank(String.valueOf(conObj.DOB__c)) || String.isBlank(conObj.Social_Security_Number__c))) {
            return true;
        }else {
            return true;
        }

     }

    public pageReference Test(){
      hasDuplicateResult = false ;  
    Boolean stayOnpage = false;
    Contact conObj =(Contact) sc.getRecord();    
    boolean validateResult =  validateDobandsocial(conObj);
     try{
        if(validateResult){
            if(contactId == NULL){
                stayOnpage = Test2(conObj);
               // insert conObj;
                }
            else{
               // stayOnpage = Test2(conObj);          
                update conObj;
               }
      
       if(stayOnPage == true)
       {
        save_dup_ignore = true;
        save_dup = true;
        save_dup_ignorenew = true;

        Test = false;
        return null;
       }
       else{
              
        PageReference saveAndRedirectPage = new PageReference('/apex/ActiveContactEditRedirectPage');
        saveAndRedirectPage.setRedirect(true);
        saveAndRedirectPage.getParameters().put('id', conObj.id);
        saveAndRedirectPage.getParameters().put('name', conObj.name);
        return saveAndRedirectPage;}
       }else{
            ApexPages.addmessage(new ApexPages.message(ApexPages.severity.Error, 'BirthDate and/or SSN can not be blank'));
            return null;
        }
    }catch(Exception ex){
    ApexPages.addmessage(new ApexPages.message(ApexPages.severity.Error, 'testvali1'+ex.getdmlMessage(0)));
    return null;
    }
 
    }
    
    public Boolean Test2(Contact conObj){

    hasDuplicateResult = true ;
 
        Database.DMLOptions dml = new Database.DMLOptions();
        dml.DuplicateRuleHeader.allowSave = true;
        dml.DuplicateRuleHeader.runAsCurrentUser = true;
         //Contact conObj =(Contact) sc.getRecord();
         
        Database.SaveResult saveResult = Database.insert(conObj, false);
      
        system.debug('The Test Debug after contact save on  savedupe');
        
       
         if (!saveResult.isSuccess()) {
         system.debug('The Test Inside after success savedupe');
            for (Database.Error error : saveResult.getErrors()) {
                // If there are duplicates, an error occurs
                // Process only duplicates and not other errors
                //   (e.g., validation errors)
                if (error instanceof Database.DuplicateError) {
                    // Handle the duplicate error by first casting it as a
                    //   DuplicateError class
                    // This lets you use methods of that class
                    //  (e.g., getDuplicateResult())
                    Database.DuplicateError duplicateError =
                            (Database.DuplicateError)error;
                    Datacloud.DuplicateResult duplicateResult =
                            duplicateError.getDuplicateResult();
                    
                    // Display duplicate error message as defined in the duplicate rule
                    ApexPages.Message errorMessage = new ApexPages.Message(
                            ApexPages.Severity.ERROR, 'Duplicate Error: ' +
                            duplicateResult.getErrorMessage());
                    ApexPages.addMessage(errorMessage);
                    
                    // Get duplicate records
                    this.duplicateRecords = new List<sObject>();

                    // Return only match results of matching rules that
                    //  find duplicate records
                    Datacloud.MatchResult[] matchResults =
                            duplicateResult.getMatchResults();

                    // Just grab first match result (which contains the
                    //   duplicate record found and other match info)
                    Datacloud.MatchResult matchResult = matchResults[0];

                    Datacloud.MatchRecord[] matchRecords = matchResult.getMatchRecords();

                    // Add matched record to the duplicate records variable
                    for (Datacloud.MatchRecord matchRecord : matchRecords) {
                        System.debug('MatchRecord: ' + matchRecord.getRecord());
                        this.duplicateRecords.add(matchRecord.getRecord());
                    }
                    this.hasDuplicateResult = !this.duplicateRecords.isEmpty();
                }
            }
            
            //If there’s a duplicate record, stay on the page
            //return null;
            return (true);
        }
        
        /******* END *******/  
        else
        return (false);

    }

}