trigger Contactcallout on Contact (after insert, after update, before delete) {
Map<Id, String> m = new Map<Id, String>();
list<Contact> validContacts = new list<Contact>();
set<ID> accIds = new set<ID>();
if(Trigger.isDelete)
    {
        for (contact c : Trigger.old) 
        {
            if(c.RecordTypeId == '012D0000000BaFA' && c.Reg__c == TRUE)
            c.status__c='inactive';
            {
                validContacts.add(c);
                accIds.add(c.accountid);
            }   
        }
    }
    else
    {
for (contact c : Trigger.new) {
    if(c.RecordTypeId == '012D0000000BaFA' && c.Reg__c == TRUE){
    if(Trigger.isUpdate){
        contact old = Trigger.oldMap.get(c.Id);
        if (c.Email != old.Email||c.FirstName!=old.FirstName||c.LastName!=old.LastName||c.phone!=old.phone||c.Title__c!=old.Title__c||c.status__c!=old.status__c||c.AccountID!=old.AccountID||c.Reg__c == TRUE)
         {
             validContacts.add(c);
                accIds.add(c.accountid);
         }
         }else{
         validContacts.add(c);
                accIds.add(c.accountid);
                }
                }
         }   
}
map<ID, Account> accMap;
if(!accIds.IsEmpty()) // guard condition for SOQL
    accMap = new map<ID, Account>([select name from account where id in :accIds]);

for (contact c : validContacts) {
    Account acc = accMap.get(c.AccountID);
    string accName = acc == null ? null : acc.Name;
    WebServiceCallout.sendNotification(c.Id,c.Email,c.FirstName,c.LastName,c.phone,c.Title__c,accName,c.status__c);
              }
}

@istest
public class ContactcalloutTestClass{
@istest
static void contactcreate(){
Account acc = new Account();
acc.Name = 'Test';
acc.ShippingStreet = 'test';
acc.ShippingCity = 'test';        
acc.ShippingPostalCode = 'tw31aq';
insert acc;

contact c =new contact();
c.Email = 'abc@gmail.com';
c.Salutation = 'Mr';
c.FirstName = 'Abraham';
c.LastName = 'Daniel';
c.type__c = 'Agency';
c.status__c= 'Active';
insert c;

Contact c1=[Select id from contact Where Id =:c.id];
c1.firstname= 'Daniel';
c1.lastname= 'Abraham';
c1.Email = 'def@gmail.com';
c1.Status__c = 'inactive';
update c1;
           try
           { 
               Delete c1;
              // c1.Status__c = 'Inactive';
            }
           catch(DmlException e) 
           {
               System.debug('The following exception has occurred: ' + e.getMessage());
            }
               }
@istest
static void contactcreate2(){
Account acc2 = new Account();
acc2.Name = 'Test';
acc2.ShippingStreet = 'test';
acc2.ShippingCity = 'test';        
acc2.ShippingPostalCode = 'tw31aq';
insert acc2;

contact c3 =new contact();
c3.Email = 'abc@gmail.com';
c3.Salutation = 'Mr';
c3.FirstName = 'Abraham';
c3.LastName = 'Daniel';
c3.type__c = 'Agency';
c3.status__c= 'Active';
insert c3;

Contact c4=[Select id from contact Where Id =:c3.id];
c4.firstname= 'Daniel';
c4.lastname= 'Abraham';
c4.Email = 'def@gmail.com';
c4.Status__c = 'inactive';
update c4;
if(c4.email !=c3.email||c4.firstname != c3.firstname||c4.lastname != c3.lastname){
Test.setMock(WebServiceMock.class, new WebServiceMockImpl());
            }
            }
            }