trigger AccountChangeTrigger on Account (after insert, after update) {
	System.debug('AccountChangeTrigger ENTERED');
	System.debug(Trigger.New);
	System.debug(Trigger.Old);
    
    Account NewAccountValues =  Trigger.New[0];

    //TODO Determine if update made by API using last modified by.  If so, do not publish event to avoid infinite loop
    System.debug('last modified by:' + NewAccountValues.LastModifiedById);

    //DETERMINE IF STATUS SWITCHED FROM INACTIVE TO ACTIVE
    String NewActive = NewAccountValues.Active__c;
    String OutputActive = 'inactive';  //DEFAULT IS INACTIVE, MEANING MESSAGE IS NOT SENT
    
    //IF IT'S AN UPDATE THEN COMPARE OLD AND NEW VALUES
    if (Trigger.isUpdate) {
        Account OldAccountValues =  Trigger.Old[0];
        String OldActive = OldAccountValues.Active__c;

        if((OldActive == 'no' || String.isBlank(OldActive)) & NewActive == 'yes'){
            OutputActive = 'activated';
        }else if(OldActive == 'yes' & NewActive == 'yes'){
            OutputActive = 'activate';
        }else if(OldActive == 'yes' & (NewActive == 'no' || String.isBlank(NewActive))){
            OutputActive = 'deactivated';
        }
    }else{    //OTHERWISE IT'S A NEW RECORD
         if(NewActive == 'yes'){
            OutputActive = 'activated';
        }
    }
    
    if(OutputActive != 'inactive'){
        System.debug('Record is not inactive.  Publishing event.  Value of OutputActive is: ' + OutputActive); 
        //MAP FROM THE RECORDS TO THE PLATFORM EVENT
        AccountChanged__e AccountChanged = new AccountChanged__e();
        AccountChanged.Active__c = OutputActive;
        AccountChanged.BillingCity__c = NewAccountValues.BillingCity;
        AccountChanged.BillingPostalCode__c = NewAccountValues.BillingPostalCode;
        AccountChanged.BillingState__c = NewAccountValues.BillingState;
        AccountChanged.BillingStreet__c = NewAccountValues.BillingStreet;
        AccountChanged.Name__c= NewAccountValues.Name;
        AccountChanged.Phone__c=NewAccountValues.Phone;
        AccountChanged.recordId__c=NewAccountValues.Id;
        EventBus.publish(AccountChanged);
    }else{
        System.debug('Record is inactive. NOT Publishing event.  Value of OutputActive is: ' + OutputActive); 
    }

    
    
	System.debug('AccountChangeTrigger EXITED');
}