Click Apply button automatically after user selects user package to contact Job Listing/Listinig (for WP Job Manager Packages)

functions.php

<?php
add_filter( 'job_manager_packages_form_user_package_add_post_redirect', 'smyles_click_contact_btn_after_select_contact_pkg', 10, 5 );
add_action( 'job_application_start', 'smyles_check_click_apply_btn' );

/**
 * Add cookie after user selects own package to contact resume
 *
 * This method will be called when a user selects a specific contact package to use to contact a resume, and it will
 * set a cookie that will be read when the page reloads/redirects, and will automatically click the contact button.
 *
 * @param $redirect
 * @param $result
 * @param $listing_id
 * @param $user_package_id
 * @param $form_type
 *
 * @return string
 * @author  Myles McNamara
 *
 */
function smyles_click_contact_btn_after_select_contact_pkg( $redirect, $result, $listing_id, $user_package_id, $form_type ) {

	if ( $form_type === 'apply' && get_post_type( $listing_id ) === 'job_listing' ) {
		setcookie( 'jmp-pending-click-apply', $listing_id, time() + 300, COOKIEPATH, COOKIE_DOMAIN, false ); // 5 min max cookie
	}

	return $redirect;
}

/**
 * Check for cookie to automatically click contact button
 *
 * @author  Myles McNamara
 */
function smyles_check_click_apply_btn() {

	if ( array_key_exists( 'jmp-pending-click-apply', $_COOKIE ) && ! empty( $_COOKIE['jmp-pending-click-apply'] ) ) {
		// After 1 second (1000 milliseconds) the resume contact button will be clicked (to allow other jQuery plugins to register callbacks to button before clicking)
		?>
		<script>jQuery( function ( $ ) { setTimeout( function () { $( '.job_application > a' ).click(); }, 1000 ); } );</script>
		<?php
		// Set cookie to empty value with expiration of an hour ago (to remove on next page load)
		setcookie( 'jmp-pending-click-apply', '', time() - 3600, COOKIEPATH, COOKIE_DOMAIN, false );
	}

}