Gravity Perks // GP Notification Scheduler // Credit Card Expiration

gp-notification-scheduler-cc-expiration.php

<?php
/**
 * Gravity Perks // GP Notification Scheduler // Credit Card Expiration
 *
 * Send notifications based on a credit card expiration date.
 *
 * @version  0.1
 * @author   David Smith <david@gravitywiz.com>
 * @license  GPL-2.0+
 * @link     http://gravitywiz.com/
 *
 * Plugin Name:  GP Notification Scheduler - Credit Card Expiration
 * Plugin URI:   http://gravitywiz.com/
 * Description:  Send notifications based on a credit card expiration date.
 * Author:       Gravity Wiz
 * Version:      0.1
 * Author URI:   http://gravitywiz.com
 */
class GPNS_CC_Expiration {

    public function __construct( $args = array() ) {

        // set our default arguments, parse against the provided arguments, and store for use throughout the class
        $this->_args = wp_parse_args( $args, array(
            'form_id'       => false,
            'date_field_id' => false
        ) );

        // do version check in the init to make sure if GF is going to be loaded, it is already loaded
        add_action( 'init', array( $this, 'init' ) );

    }

    public function init() {

        // make sure we're running the required minimum version of Gravity Forms
        if( ! property_exists( 'GFCommon', 'version' ) || ! version_compare( GFCommon::$version, '1.8', '>=' ) ) {
            return;
        }

        add_action( 'gform_pre_submission', array( $this, 'populate_date_field' ) );

    }

    public function populate_date_field( $form ) {

    	if( ! $this->is_applicable_form( $form ) ) {
    		return;
	    }

	    $cc_field = GFFormsModel::get_fields_by_type( $form, array( 'creditcard' ) );
    	if( empty( $cc_field ) ) {
    		return;
	    }

	    $date_field = GFFormsModel::get_field( $form, $this->_args['date_field_id'] );
    	$value = rgpost( "input_{$cc_field[0]->id}_2" ); // Format: array( 1, 2018 ).
    	$timestamp = strtotime( sprintf( '%d/%d/1', $value[1], $value[0] ) );

	    $_POST[ "input_{$this->_args['date_field_id']}" ] = $this->format_by_date_field( $timestamp, $date_field );

    }

    public function format_by_date_field( $timestamp, $field ) {

    	list( $format, $divider ) = $field['dateFormat'] ? array_pad( explode( '_', $field['dateFormat' ] ), 2, 'slash' ) : array( 'mdy', 'slash' );
	    $dividers = array( 'slash' => '/', 'dot' => '.', 'dash' => '-' );

	    $format = str_replace( 'y', 'Y', $format );
	    $divider = $dividers[ $divider ];
	    $format = implode( $divider, str_split( $format ) );

	    return date( $format, $timestamp );
    }

    public function is_applicable_form( $form ) {

        $form_id = isset( $form['id'] ) ? $form['id'] : $form;

        return empty( $this->_args['form_id'] ) || $form_id == $this->_args['form_id'];
    }

}

# Configuration

new GPNS_CC_Expiration( array(
	'form_id'       => 1787,
	'date_field_id' => 3
) );