Custom FB Pixel & Token per checkout

Custom FB Pixel & Token per checkout

/**
 * Plugin Name: FunnelKit — Custom FB Pixel & Token per checkout / upsell
 * Description: Use a different Facebook pixel id + Conversions API access token on specific Aero checkout pages and specific upsell funnels. Every other page keeps the global pixel/token from settings. Add as many rows as needed.
 * Version: 1.1.0
 */

defined( 'ABSPATH' ) || exit;

/* ==== EDIT THESE =========================================================
 * Add one row per checkout / upsell. Any id not listed keeps the global
 * pixel + token. 'pixel' / 'token' may be a single value or a comma list.
 * ======================================================================== */

// Aero checkout pages: checkout_page_id => pixel + token.
function fk_custom_checkout_map() {
	return array(
		19234 => array( 'pixel' => '111111111111111', 'token' => 'EAAxxxxxxxxxxxxxxxxx1' ),
		// 19235 => array( 'pixel' => '333333333333333', 'token' => 'EAAxxxxxxxxxxxxxxxxx3' ),
	);
}

// Upsells: key by OFFER id (one specific offer) OR FUNNEL id (all offers in
// that funnel). Offer id is checked first, then funnel id — list whichever
// level you want to target.
function fk_custom_upsell_map() {
	return array(
		193424 => array( 'pixel' => '222222222222222', 'token' => 'EAAxxxxxxxxxxxxxxxxx2' ),
		// 193425 => array( 'pixel' => '444444444444444', 'token' => 'EAAxxxxxxxxxxxxxxxxx4' ),
	);
}

/**
 * The pixel/token for the current upsell: match on offer id first, then funnel id.
 *
 * @param string $which 'pixel' or 'token'.
 *
 * @return string
 */
function fk_custom_upsell_value( $which ) {
	if ( ! function_exists( 'WFOCU_Core' ) || is_null( WFOCU_Core()->data ) ) {
		return '';
	}

	$map      = fk_custom_upsell_map();
	$offer_id = absint( WFOCU_Core()->data->get_current_offer() );
	$funnel_id = absint( WFOCU_Core()->data->get_funnel_id() );

	$v = fk_custom_lookup( $map, $offer_id, $which );
	if ( '' === $v ) {
		$v = fk_custom_lookup( $map, $funnel_id, $which );
	}

	return $v;
}

/* ======================================================================== */


/**
 * Return the mapped value for an id, or '' when the id isn't in the map.
 *
 * @param array  $map   Config map.
 * @param int    $id    Checkout / funnel id.
 * @param string $which 'pixel' or 'token'.
 *
 * @return string
 */
function fk_custom_lookup( $map, $id, $which ) {
	return ( isset( $map[ $id ][ $which ] ) && '' !== $map[ $id ][ $which ] ) ? $map[ $id ][ $which ] : '';
}


// --- Aero checkout page events, per checkout id ---
add_filter( 'wfacp_fb_pixel_ids', function ( $pixel ) {
	$id = class_exists( 'WFACP_Common' ) ? absint( WFACP_Common::get_id() ) : 0;
	$v  = fk_custom_lookup( fk_custom_checkout_map(), $id, 'pixel' );

	return '' !== $v ? $v : $pixel;
}, 99 );

add_filter( 'wfacp_conversion_api_access_token', function ( $token ) {
	$id = class_exists( 'WFACP_Common' ) ? absint( WFACP_Common::get_id() ) : 0;
	$v  = fk_custom_lookup( fk_custom_checkout_map(), $id, 'token' );

	return '' !== $v ? $v : $token;
}, 99 );


// --- Upsell events, per offer id (then funnel id) ---
add_filter( 'wfocu_fb_pixel_ids', function ( $pixel ) {
	$v = fk_custom_upsell_value( 'pixel' );

	return '' !== $v ? $v : $pixel;
}, 99 );

add_filter( 'wfocu_tracking_conversion_api_access_token', function ( $token ) {
	$v = fk_custom_upsell_value( 'token' );

	return '' !== $v ? $v : $token;
}, 99 );