Comment valider les webhooks

/**
	 * Example of Process Webhook function.
	 */
	public function process_webhooks() {
		if ( ( strtoupper( $_SERVER['REQUEST_METHOD'] ) !== 'POST' ) ) {
			exit;
		}

		// Read and sanitize the input
		$input = file_get_contents('php://input');
		$sanitized_input = sanitize_text_field($input);
		$event = json_decode($sanitized_input, true);

		// Get all headers
		$headers = getallheaders();

		// Check for the Secret Key header
		$secret_key = isset($headers['X-Secret-Key']) ? $headers['X-Secret-Key'] : '';

		// Verify the secret key
		if ($secret_key !== $this->webhook_secret) {
			return;
		}

		// Validate necessary fields in the event data
		if (!isset($event['status'], $event['paymentReference'])) {
			exit;
		}

		// Convert status to lowercase for comparison
		$status = strtolower($event['status']);

		if ($status !== 'succeeded' && $status !== 'authorized') {
			return;
		}

		// Ensure the event object is in the correct format
		if (!is_array($event) || !isset($event['paymentReference'])) {
			exit;
		}

		// Extract order details from payment reference
		$order_details = explode('_', sanitize_text_field($event['paymentReference']));

		sleep( 10 );

		// Validate order details format
		if (count($order_details) < 1 || !is_numeric($order_details[0])) {
			exit;
		}

		$order_id = (int) $order_details[0];
		$order = wc_get_order($order_id);

		if ( ! $order ) {
			return;
		}

		// Verify merchant reference
		/*
		if ($event['merchantReference'] !== $order->get_meta('merchantReference')) {
			exit;
		}
		*/

		// Respond with a 200 HTTP status code
		http_response_code(200);

		// Check order status and exit if already processed
		$order_status = strtolower($order->get_status());
		if (in_array($order_status, ['processing', 'completed', 'on-hold'], true)) {
			exit;
		}

		// Get currency details
		$order_currency = $order->get_currency();
		$currency_symbol = get_woocommerce_currency_symbol($order_currency);
		$order_total = $order->get_total();
		$amount_paid = floatval($event['amount']);
		$bictorys_ref = sanitize_text_field($event['id']);
		$payment_currency = strtoupper(sanitize_text_field($event['currency']));
		$gateway_symbol = get_woocommerce_currency_symbol($payment_currency);

		// check if the amount paid is equal to the order amount.
		if ( $amount_paid < $order_total ) {

			$order->update_status( 'on-hold', '' );

			$order->add_meta_data( '_transaction_id', $bictorys_ref, true );
			/*
			 * translators:
			 * %1$s: Line break
			 * %2$s: Line break
			 * %3$s: Line break
			 */
			$notice      = sprintf( __( 'Thank you for shopping with us.%1$sYour payment transaction was successful, but the amount paid is not the same as the total order amount.%2$sYour order is currently on hold.%3$sKindly contact us for more information regarding your order and payment status.', 'bictorys-payment-gateway-for-woocommerce' ), '<br />', '<br />', '<br />' );
			$notice_type = 'notice';

			// Add Customer Order Note.
			$order->add_order_note( $notice, 1 );

      in_order_note = sprintf( __( '<strong>Look into this order</strong>%1$sThis order is currently on hold.%2$sReason: Amount paid is less than the total order amount.%3$sAmount Paid was <strong>%4$s (%5$s)</strong> while the total order amount is <strong>%6$s (%7$s)</strong>%8$s<strong>Bictorys Transaction Reference:</strong> %9$s', 'bictorys-payment-gateway-for-woocommerce' ), '<br />', '<br />', '<br />', $currency_symbol, $amount_paid, $currency_symbol, $order_total, '<br />', $bictorys_ref );
			$order->add_order_note( $admin_order_note );

			function_exists( 'wc_reduce_stock_levels' ) ? wc_reduce_stock_levels( $order_id ) : $order->reduce_order_stock();

			wc_add_notice( $notice, $notice_type );

			WC()->cart->empty_cart();

		} else {

			if ( $payment_currency !== $order_currency ) {

				$order->update_status( 'on-hold', '' );

				$order->update_meta_data( '_transaction_id', $bictorys_ref );
				/*
				 * translators:
				 * %1$s: Line break
				 * %2$s: Line break
				 * %3$s: Line break
				 */
				$notice      = sprintf( __( 'Thank you for shopping with us.%1$sYour payment was successful, but the payment currency is different from the order currency.%2$sYour order is currently on-hold.%3$sKindly contact us for more information regarding your order and payment status.', 'bictorys-payment-gateway-for-woocommerce' ), '<br />', '<br />', '<br />' );
				$notice_type = 'notice';

				// Add Customer Order Note.
				$order->add_order_note( $notice, 1 );

				$admin_order_note = sprintf( __( '<strong>Look into this order</strong>%1$sThis order is currently on hold.%2$sReason: Order currency is different from the payment currency.%3$sOrder Currency is <strong>%4$s (%5$s)</strong> while the payment currency is <strong>%6$s (%7$s)</strong>%8$s<strong>Bictorys Transaction Reference:</strong> %9$s', 'bictorys-payment-gateway-for-woocommerce' ), '<br />', '<br />', '<br />', $order_currency, $currency_symbol, $payment_currency, $gateway_symbol, '<br />', $bictorys_ref );
				$order->add_order_note( $admin_order_note );

				function_exists( 'wc_reduce_stock_levels' ) ? wc_reduce_stock_levels( $order_id ) : $order->reduce_order_stock();

				wc_add_notice( $notice, $notice_type );

			} else {

				$order->payment_complete( $bictorys_ref );

				/*
				 * translators: %s: Transaction Reference.
				 */
				$order->add_order_note( sprintf( __( 'Payment via Bictorys successful (Transaction Reference: %s)', 'bictorys-payment-gateway-for-woocommerce' ), $bictorys_ref ) );


				WC()->cart->empty_cart();

				if ( $this->is_autocomplete_order_enabled( $order ) ) {
					$order->update_status( 'completed' );
				}
			}
		}

		$order->save();

		exit;
	}

/**
 * Exemple de payload contenu dans le body du webhook.
 */
	{
    "id": "33e1c83b-7cb0-437b-bc50-a7a58e5660ad",
    "merchantId": "d2d2053b-638d-4133-957e-3caf63e6b79c",
    "type": "payment",
    "amount": 100,
    "currency": "XOF",
    "paymentReference": "33e1c83b-7cb0-437b-bc50-a7a58e5660ad",
    "customerId": "33e1c83b-7cb0-437b-bc50-a7a58e5660ad",
    "customerObject": {
      "id": "fbd2053b-638d-4133-957e-3caf63e6b79c",
      "name": "John Dao",
      "phone": 22505234567890,
      "email": "[email protected]",
      "address": "23, avenue de la liberté",
      "city": "Dakar",
      "postalCode": 0,
      "country": "SN",
      "locale": "fr-FR",
      "createdAt": "2022-06-20T17:17:11Z",
      "updatedAt": "2022-06-20T17:17:11Z"
    },
    "pspName": "orange_money",
    "paymentMeans": "+221 *** ** 09",
    "paymentChannel": "Terminal",
    "merchantFees": 25,
    "customerFees": 0,
    "transactionFeeAmountHT": 25,
    "transactionFeeAmountTax": 0,
    "merchantReference": "33e1c83b-7cb0-437b-bc50-a7a58e5660ad",
    "orderType": "invoice",
    "orderId": "14e1c83b-7cb0-437b-bc50-a7a58e5660ad",
    "status": "succeeded",
    "deviceId": "SN-4562345",
    "originIp": "192.0.0.1",
    "timestamp": "2022-06-20T17:17:11Z"
}
/**
 * Possible valeur du statut du paiement
 */
    PaymentStatus:
      description: status of the transaction
      type: string
      enum:
        - succeeded
        - failed
        - cancelled
        - pending
        - processing
        - reversed
        - authorized