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Multi-currency support for CAPI events #3659

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Multi-currency support for CAPI events #3659

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42 changes: 40 additions & 2 deletions facebook-commerce-events-tracker.php
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Original file line number Diff line number Diff line change
Expand Up @@ -1040,13 +1040,33 @@ public function inject_purchase_event( $order_id ) {
'content_name' => wp_json_encode( $product_names ),
'contents' => wp_json_encode( $contents ),
'content_type' => $content_type,
// Use the actual transaction currency stored on the order
'value' => $order->get_total(),
'currency' => get_woocommerce_currency(),
'currency' => $order->get_currency(),
'order_id' => $order_id,
),
'user_data' => $this->get_user_data_from_billing_address( $order ),
);

/**
* Allow last-mile override of the currency used for events.
*
* @param string $currency
* @param string $event_name
* @param \WC_Order|null $order
*/
$event_data['custom_data']['currency'] = apply_filters(
'facebook_for_woocommerce_event_currency',
$event_data['custom_data']['currency'],
$event_name,
$order
);

// (Optional) Normalize value to numeric for robustness
if ( isset( $event_data['custom_data']['value'] ) ) {
$event_data['custom_data']['value'] = (float) $event_data['custom_data']['value'];
}

$event = new Event( $event_data );

$this->send_api_event( $event );
Expand Down Expand Up @@ -1085,11 +1105,20 @@ public function inject_subscribe_event( $order_id ) {
'custom_data' => array(
'sign_up_fee' => $subscription->get_sign_up_fee(),
'value' => $subscription->get_total(),
'currency' => get_woocommerce_currency(),
// Use subscription/order currency, not store default
'currency' => ( method_exists( $subscription, 'get_currency' ) ? $subscription->get_currency() : get_woocommerce_currency() ),
),
'user_data' => $this->pixel->get_user_info(),
);

// Same currency override hook for Subscribe
$event_data['custom_data']['currency'] = apply_filters(
'facebook_for_woocommerce_event_currency',
$event_data['custom_data']['currency'],
$event_name,
null
);

$event = new Event( $event_data );

$this->send_api_event( $event );
Expand Down Expand Up @@ -1129,6 +1158,15 @@ public function inject_lead_event() {
protected function send_api_event( Event $event, bool $send_now = true ) {
$this->tracked_events[] = $event;

/**
* Filter the Event payload before sending to Meta.
* This allows integrators to adjust custom_data (currency/value/contents) per event
* without forking the plugin.
*
* @param Event $event
*/
$event = apply_filters( 'facebook_for_woocommerce_before_send_api_event', $event );

if ( $send_now ) {
try {
facebook_for_woocommerce()->get_api()->send_pixel_events( facebook_for_woocommerce()->get_integration()->get_facebook_pixel_id(), array( $event ) );
Expand Down