public class CaseMergeApexClass {
    Public String textEnter {get;set;}
    public List<sObjectWrapper> wrappers {get;set;} 
    public List<case> lstcas {get;set;}
    public String selectMasterCase {get;set;}
    public boolean addOnChkbx {get;set;}  
    public boolean isSelected{get;set;}
    public boolean flagmerged;
    Public String caseId {get;set;} 
    public List<case>mappsub {get;set;}
    public CaseMergeApexClass(ApexPages.StandardController stdController) {
       caseId = apexpages.currentpage().getparameters().get('id');  
       lstcas = new List<case>();
      wrappers=new List<sObjectWrapper>();
        
        flagmerged =true;
        mappsub =new List<case>();
        for(case cs:[select id,Account.name,Contact.name,RecordType.name,owner.name,subject from case where id=:caseId limit 1])
        {
          mappsub.add(cs);
        }
    }
    public void mergeCase()
    {
       
      list<Case>lstgetcas=[select zGloblal_Total_attachments__c, RecordType.name,CaseNumber,id,subject,account.name,contact.name from case where RecordType.name=:mappsub.get(0).RecordType.name and Contact.name=:mappsub.get(0).Contact.name and Subject like :'%'+mappsub.get(0).subject+'%' and status!='Closed Duplicate' ];
        
          
        for(case cs:lstgetcas)
        {
           
            if(flagmerged){
          wrappers.add(new sObjectWrapper(cs,addOnChkbx));
         }
        
    }
        
    
    
        flagmerged=false;
    } 
    public void selectForMaster()
    {
        lstcas.clear();
         for(sObjectWrapper wrap : wrappers){  
       /*Check if record is selected*/  
       if(wrap.isSelected==true){
         
           
         lstcas.add(wrap.cas);  
        
    }
    }  
    }
    
    public void mergedTicket()
    {
        list<case> updcase=new List<case>();
        list<caseComment> NewCaseCommet=new List<caseComment>();
        list<caseComment> lstComment= [select id ,commentbody,parentid from casecomment where parentId in:lstcas];
        for(casecomment cmt:lstComment)
        {
           caseComment newcmt=new casecomment();
           newcmt.ParentId=caseId; 
           newcmt.CommentBody=cmt.CommentBody; 
           NewCaseCommet.add(newcmt);
        }
       insert NewCaseCommet;
         List<attachment> newAttachment =new list<attachment>();
   List<attachment> lstAttachments=[select id,Body,Name,ParentId from attachment where parentId in:lstcas];
        for(attachment att:lstAttachments)
        {
            attachment newattch=new attachment();
            newattch.parentId=caseId;
            newattch.Body=att.body;
            newattch.name=att.name;
            newAttachment.add(newattch);
        }
       insert newAttachment; 
    closedDuplicate();
      urlre();   
    }
    
    public void closedDuplicate()
    {
        List<case> closedcase =new List<case>();
        for(case cs:lstcas)
        {
            cs.Status='Closed Duplicate';
            closedcase.add(cs);
        }
       update closedcase; 
        
    }
    
    public pagereference urlre()
{
caseId = apexpages.currentpage().getparameters().get('id');
pagereference pg =new pagereference('/'+caseId);

return pg;   
}

    public class sObjectWrapper
  {
    public boolean isSelected{get;set;}  
    public case cas{get;set;} 
        
    public sObjectWrapper(case cas,Boolean isSelected){  
    this.cas = cas;      
    this.isSelected = isSelected;  
     }  
    }
}

@isTest
public class CaseMergeApexClassTest {
    
      static testMethod void testMerge(){        
       
        Account testAccount = new Account(Name='Test Company Name123');
        insert testAccount;
       
         Contact con  = new Contact(LastName='Testcont' ,Email='sss@test.com', AccountId=testAccount.id);
        insert con;
          list<case>lstcase =new LIst<case>();
             Case caseObj1 = new Case();
            caseObj1.AccountId = testAccount.Id;
            caseObj1.contactId=con.id;
            caseObj1.Status = 'Action-Automated Escalation';
            caseObj1.Origin ='Email';
          lstcase.add(caseObj1);
          
           Case caseObj2 = new Case();
            caseObj2.AccountId = testAccount.Id;
            caseObj2.contactId=con.id;
            caseObj2.Status = 'Closed Duplicate';
            caseObj2.Origin ='Email';
          lstcase.add(caseObj2);
       test.startTest(); 
        insert lstcase;

        
            string casId=lstcase[0].id;
        
        ApexPages.StandardController sc = new ApexPages.StandardController(lstcase[0]);
       
        CaseMergeApexClass testCon = new CaseMergeApexClass(sc);
        
          testCon.CaseId = lstcase[0].id ;
   
        PageReference pageRef = Page.CaseMergePage;
        pageRef.getParameters().put('id', String.valueOf(lstcase[0].id));
        Test.setCurrentPage(pageRef);
          testCon.addOnChkbx=true;
          testCon.closedDuplicate();
          testCon.textEnter='899898';
          testCon.selectMasterCase='89898';
         testCon.flagmerged=true;
         testCon.isSelected=true;
          
          testCon.urlre();
          testCon.mergeCase();          
          testCon.selectForMaster();
          testCon.mergedTicket();

      test.stopTest();
    }
}