OppFieldHistoryCTRL.txt

public class OppFieldHistoryCTRL {
    @AuraEnabled
    public static List<wrapClass> GetOppField(String oppId)
    {   
        Map<String,String> objMonthNum = new Map<String,String>();
        objMonthNum.put('0','Jan');
        objMonthNum.put('1','Feb');
        objMonthNum.put('2','Mar');
        objMonthNum.put('3','April');
        objMonthNum.put('4','May');
        objMonthNum.put('5','Jun');
        objMonthNum.put('6','July');
        objMonthNum.put('7','Aug');
        objMonthNum.put('8','Sep');
        objMonthNum.put('9','Oct');
        objMonthNum.put('10','Nov');
        objMonthNum.put('11','Dec');
        List<wrapClass> objwraList = new List<wrapClass>();
        List<OpportunityFieldHistory> lstOppFieldHis=[Select Id,DataType,Field,OpportunityId,NewValue,OldValue,Opportunity.LastModifiedDate,Opportunity.LastModifiedBy.Name FROM OpportunityFieldHistory where OpportunityId =:oppId];
        for(OpportunityFieldHistory objFieldHis : lstOppFieldHis){
            System.debug('####### '+objFieldHis.Field);
            if(objFieldHis.Field !='created'){
                String LabelName  =(String)Schema.getGlobalDescribe().get('Opportunity').getDescribe().fields.getMap().get(objFieldHis.Field).getDescribe().getLabel();
                DateTime Modify = objFieldHis.Opportunity.LastModifiedDate;
                String monthDig = String.valueOf(Modify.month());
                String DateTimeValue = objMonthNum.get(String.valueOf(Modify.month()))+' '+Modify.day()+', '+Modify.year();
                
               /* String DateTimeValue = '';
                if(monthDig.length() >2){
                    //DateTimeValue = Modify.month()+'-'+Modify.day()+'-'+Modify.year()+' '+Modify.hour()+':'+Modify.minute();
                    DateTimeValue = Modify.month()+'-'+Modify.day()+'-'+Modify.year();
                }else{
                    //DateTimeValue = '0'+Modify.month()+'-'+Modify.day()+'-'+Modify.year()+' '+Modify.hour()+':'+Modify.minute();
                    DateTimeValue = '0'+Modify.month()+'-'+Modify.day()+'-'+Modify.year();
                })*/
                
                //String DateTimeValue = ''+objFieldHis.Opportunity.LastModifiedDate;
                objwraList.add(new wrapClass(String.valueOf(objFieldHis.Id),objFieldHis.DataType, objFieldHis.Field,LabelName,String.valueOf(objFieldHis.OpportunityId),String.valueOf(objFieldHis.NewValue),String.valueOf(objFieldHis.OldValue),String.valueOf(DateTimeValue),objFieldHis.Opportunity.LastModifiedBy.Name));
            }
        }
        return objwraList;
    } 
    
    public class wrapClass{
        @AuraEnabled public String Id;
        @AuraEnabled public String DataType;
        @AuraEnabled public String Field;
        @AuraEnabled public String FieldLabel;
        @AuraEnabled public String OpportunityId;
        @AuraEnabled public String NewValue;
        @AuraEnabled public String OldValue;
        @AuraEnabled public String LastModifiedDate;
        @AuraEnabled public String LastModifiedName;
        public wrapClass(String Id,String DataType,String Field,String FieldLabel,String OpportunityId,String NewValue,String OldValue,String LastModifiedDate,String LastModifiedName){
            this.Id = Id;
            this.DataType = DataType;
            this.Field = Field;
            this.FieldLabel = FieldLabel;
            this.OpportunityId = OpportunityId;
            this.NewValue = NewValue;
            this.OldValue = OldValue;
            this.LastModifiedDate = LastModifiedDate;
            this.LastModifiedName = LastModifiedName;
        }
    }
}