Add CRM automation rule that creates invoice based on lead or deal

This example demonstrates how you can create an automation rule in Bitrix24 that will create an invoice based on lead or deal

 
update path $handlerUrl for a file that registers an activity with your path for the file executing the activity :  

 
<?
$handlerUrl = 'https://yourdomain.yyy/handler.php';
$result = CRest::call(
	'bizproc.robot.add',
	[
		'CODE' => 'robotAccount',
		'HANDLER' => $handlerUrl,
		'AUTH_USER_ID' => 1,
		'NAME' => 'RobotAccount',
		'PROPERTIES' => [
			'account_title' => [
				'Name' => 'Format account title',
				'Description' => '',
				'Type' => 'string',
				'Required' => 'Y',
				'Multiple' => 'N',
				'Default' => 'Account title',
			],

			'my_company_id' => [
				'Name' => 'My Company id',
				'Description' => '',
				'Type' => 'int',
				'Required' => 'Y',
				'Multiple' => 'N',
				'Default' => '1',
			],

			'pay_system_id' => [
				'Name' => 'Pay system id',
				'Description' => '',
				'Type' => 'int',
				'Required' => 'Y',
				'Multiple' => 'N',
				'Default' => '1',
			],
		]
	]
);
?>

activity handler path you have specified in the variable $handlerUrl above:

<?

$my_company_id = intVal($_REQUEST['properties']['my_company_id']);
$pay_system_id = intVal($_REQUEST['properties']['pay_system_id']);//some in CRest::call('sale.paysystem.list')
$account_title = htmlspecialchars($_REQUEST['properties']['account_title']);
$arDocument = $_REQUEST['document_id'];
$iDealID = 0;
$iLeadID = 0;
if (is_array($arDocument))
{
	foreach ($arDocument as $param)
	{//search id
		if (strpos($param, 'DEAL_') !== false)
		{
			$iDealID = intVal(substr($param, strlen('DEAL_')));
			break;
		}
		elseif(strpos($param, 'LEAD_') !== false)
		{
			$iLeadID = intVal(substr($param, strlen('LEAD_')));
			break;
		}
	}
}

if ($iDealID > 0)
{
	$result = CRest::call(
		'crm.deal.get',
		[
			'id' => $iDealID
		]
	);
	if (!empty($result['result']))
	{
		$arData = $result['result'];
		$resultProduct = CRest::call(
			'crm.deal.productrows.get',
			[
				'id' => $iDealID
			]
		);
	}
}
elseif($iLeadID > 0)
{
	$result = CRest::call(
		'crm.lead.get',
		[
			'id' => $iLeadID
		]
	);
	if (!empty($result['result']))
	{
		$arData = $result['result'];
		$resultProduct = CRest::call(
			'crm.lead.productrows.get',
			[
				'id' => $iLeadID
			]
		);
	}
}

if(!empty($arData['COMPANY_ID']) || !empty($arData['CONTACT_ID']))
{
	if (empty($resultProduct['result']))
	{//if the deal or lead has no products
		$resultProduct['result'][] = [
			'ID' => 0,
			'PRODUCT_ID' => 0,
			'PRODUCT_NAME' => $account_title,
			'QUANTITY' => 1,
			'PRICE' => ($arData['OPPORTUNITY'])?:0,
		];
	}
	$arProduct = [];
	foreach ($resultProduct['result'] as $product)
	{
		$arProduct[] = [
			'ID' => $product['ID'],
			'PRODUCT_ID' => $product['PRODUCT_ID'],
			'PRODUCT_NAME' => $product['PRODUCT_NAME'],
			'QUANTITY' => $product['QUANTITY'],
			'PRICE' => $product['PRICE']
		];
	}
	$resultInvoice = CRest::call(
		'crm.invoice.add',
		[
			'fields' => [
				'ORDER_TOPIC' => $account_title,
				'UF_COMPANY_ID' => $arData['COMPANY_ID'],
				'UF_CONTACT_ID' => $arData['CONTACT_ID'],
				'UF_DEAL_ID' => $arData['ID'],
				'UF_MYCOMPANY_ID' => $my_company_id,
				'PERSON_TYPE_ID' => ($arData['COMPANY_ID'] > 0) ? 1 : 2,//1 is company, 2 is contact in CRest::call('crm.persontype.list')
				'PAY_SYSTEM_ID' => $pay_system_id,
				"STATUS_ID" => "N",
				'DATE_INSERT' => date(DATE_ATOM),
				'DATE_BILL' => date(DATE_ATOM),
				'DATE_PAY_BEFORE' => date(DATE_ATOM, time() + 3600 * 24 * 20),//20 day pay
				'PRODUCT_ROWS' => $arProduct,
			]
		]
	);
}
?>