t_params()['jwt_params'] ?? null;
		if ( null === $jwt ) {
			$this->add_error( self::get_error_response_data( self::ERROR_JWT_NOT_FOUND ) );
			return $this->get_request_response( [], self::HTTP_BAD_REQUEST );
		}

		$params = $this->get_decoded_request_params( $jwt );
		if ( null === $params ) {
			return $this->get_request_response( [], self::HTTP_UNAUTHORIZED );
		}

		$jwt_catalog_id = $params['aud'] ?? '';
		if ( empty( $jwt_catalog_id ) || $jwt_catalog_id !== $fb_integration->get_product_catalog_id() ) {
			$this->add_error(
				self::get_error_response_data(
					self::ERROR_CATALOG_ID_MISMATCH,
					sprintf( 'Platform Catalog ID: %s, Request Catalog ID: %s', $fb_integration->get_product_catalog_id(), $jwt_catalog_id )
				)
			);
			return $this->get_request_response( [], self::HTTP_FORBIDDEN );
		}

		try {
			$response_data = $this->execute_endpoint( $params['payload'] );
			return $this->get_request_response( $response_data );
		} catch ( \Exception $ex ) {
			$this->add_error( self::get_error_response_data( self::ERROR_OFFER_MANAGEMENT_ERROR, $ex->getMessage() ) );
			return $this->get_request_response( [], self::HTTP_ERROR );
		}
	}

	protected function get_decoded_request_params( string $jwt ): ?array {
		try {
			$decoded_params = RequestVerification::decode_jwt_with_retries( $jwt );
		} catch ( JWTExpiredException $ex ) {
			$this->add_error( self::get_error_response_data( self::ERROR_JWT_EXPIRED ) );
			return null;
		} catch ( \Exception $ex ) {
			$this->add_error( self::get_error_response_data( self::ERROR_JWT_DECODE_FAILURE, $ex->getMessage() ) );
			return null;
		}
		return $decoded_params;
	}


	protected static function get_offer_response_data( WC_Coupon $coupon ): array {
		$is_percent_off   = 'percent' === $coupon->get_discount_type();
		$percent_off      = $is_percent_off ? (int) $coupon->get_amount() : null;
		$fixed_amount_off = $is_percent_off ? null : [
			'amount'   => $coupon->get_amount(),
			'currency' => get_woocommerce_currency(),
		];
		$offer_class      = 'order';

		return array(
			'offer_id'         => $coupon->get_id(),
			'code'             => $coupon->get_code(),
			'percent_off'      => $percent_off,
			'fixed_amount_off' => $fixed_amount_off,
			'offer_class'      => $offer_class,
			'end_time'         => $coupon->get_date_expires() ? $coupon->get_date_expires()->getTimestamp() : 0,
			'usage_limit'      => $coupon->get_usage_limit() ?? 0,
			'usage_count'      => $coupon->get_usage_count() ?? 0,
		);
	}

	protected static function get_error_response_data( string $error_type, string $error_message = '', ?string $offer_code = null ): array {
		return [
			'error_type'    => $error_type,
			'error_message' => $error_message,
			'offer_code'    => $offer_code,
		];
	}

	protected static function get_params_value_enforced( string $field_name, array $params ) {
		if ( array_key_exists( $field_name, $params ) ) {
			return $params[ $field_name ];
		}
		throw new \OutOfBoundsException( esc_html( sprintf( 'Field: %s does not exist in request params. Params fields: %s', $field_name, wp_json_encode( array_keys( $params ) ) ) ) );
	}

	private function get_request_response( array $response_data, int $status_code = self::HTTP_OK ): WP_REST_Response {
		$response_data = [
			'data'   => $response_data,
			'errors' => $this->errors,
		];
		return new WP_REST_Response( $response_data, $status_code );
	}
}