**
	 * Create or update an entry in the wc_admin_order_product_lookup table for an order.
	 *
	 * @since 3.5.0
	 * @param int $order_id Order ID.
	 * @return int|bool Returns -1 if order won't be processed, or a boolean indicating processing success.
	 */
	public static function sync_order_products( $order_id ) {
		global $wpdb;

		$order = wc_get_order( $order_id );
		if ( ! $order ) {
			return -1;
		}

		$table_name     = self::get_db_table_name();
		$existing_items = $wpdb->get_col(
			$wpdb->prepare(
				// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared, WordPress.DB.PreparedSQL.InterpolatedNotPrepared
				"SELECT order_item_id FROM {$table_name} WHERE order_id = %d",
				$order_id
			)
		);
		$existing_items = array_flip( $existing_items );
		$order_items    = $order->get_items();
		$num_updated    = 0;
		$decimals       = wc_get_price_decimals();
		$round_tax      = 'no' === get_option( 'woocommerce_tax_round_at_subtotal' );

		foreach ( $order_items as $order_item ) {
			$order_item_id = $order_item->get_id();
			unset( $existing_items[ $order_item_id ] );
			$product_qty         = $order_item->get_quantity( 'edit' );
			$shipping_amount     = $order->get_item_shipping_amount( $order_item );
			$shipping_tax_amount = $order->get_item_shipping_tax_amount( $order_item );
			$coupon_amount       = $order->get_item_coupon_amount( $order_item );

			// Skip line items without changes to product quantity.
			if ( ! $product_qty ) {
				$num_updated++;
				continue;
			}

			// Tax amount.
			$tax_amount  = 0;
			$order_taxes = $order->get_taxes();
			$tax_data    = $order_item->get_taxes();
			foreach ( $order_taxes as $tax_item ) {
				$tax_item_id = $tax_item->get_rate_id();
				$tax_amount += isset( $tax_data['total'][ $tax_item_id ] ) ? (float) $tax_data['total'][ $tax_item_id ] : 0;
			}

			$net_revenue = round( $order_item->get_total( 'edit' ), $decimals );
			if ( $round_tax ) {
				$tax_amount = round( $tax_amount, $decimals );
			}

			$result = $wpdb->replace(
				self::get_db_table_name(),
				array(
					'order_item_id'         => $order_item_id,
					'order_id'              => $order->get_id(),
					'product_id'            => wc_get_order_item_meta( $order_item_id, '_product_id' ),
					'variation_id'          => wc_get_order_item_meta( $order_item_id, '_variation_id' ),
					'customer_id'           => $order->get_report_customer_id(),
					'product_qty'           => $product_qty,
					'product_net_revenue'   => $net_revenue,
					'date_created'          => $order->get_date_created( 'edit' )->date( TimeInterval::$sql_datetime_format ),
					'coupon_amount'         => $coupon_amount,
					'tax_amount'            => $tax_amount,
					'shipping_amount'       => $shipping_amount,
					'shipping_tax_amount'   => $shipping_tax_amount,
					// @todo Can this be incorrect if modified by filters?
					'product_gross_revenue' => $net_revenue + $tax_amount + $shipping_amount + $shipping_tax_amount,
				),
				array(
					'%d', // order_item_id.
					'%d', // order_id.
					'%d', // product_id.
					'%d', // variation_id.
					'%d', // customer_id.
					'%d', // product_qty.
					'%f', // product_net_revenue.
					'%s', // date_created.
					'%f', // coupon_amount.
					'%f', // tax_amount.
					'%f', // shipping_amount.
					'%f', // shipping_tax_amount.
					'%f', // product_gross_revenue.
				)
			); // WPCS: cache ok, DB call ok, unprepared SQL ok.

			/**
			 * Fires when product's reports are updated.
			 *
			 * @param int $order_item_id Order Item ID.
			 * @param int $order_id      Order ID.
			 */
			do_action( 'woocommerce_analytics_update_product', $order_item_id, $order->get_id() );

			// Sum the rows affected. Using REPLACE can affect 2 rows if the row already exists.
			$num_updated += 2 === intval( $result ) ? 1 : intval( $result );
		}

		if ( ! empty( $existing_items ) ) {
			$existing_items = array_flip( $existing_items );
			$format         = array_fill( 0, count( $existing_items ), '%d' );
			$format         = implode( ',', $format );
			array_unshift( $existing_items, $order_id );
			$wpdb->query(
				$wpdb->prepare(
					// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared, WordPress.DB.PreparedSQL.InterpolatedNotPrepared
					"DELETE FROM {$table_name} WHERE order_id = %d AND order_item_id in ({$format})",
					$existing_items
				)
			);
		}

		return ( count( $order_items ) === $num_updated );
	}

	/**
	 * Clean products data when an order is deleted.
	 *
	 * @param int $order_id Order ID.
	 */
	public static function sync_on_order_delete( $order_id ) {
		global $wpdb;

		$wpdb->delete( self::get_db_table_name(), array( 'order_id' => $order_id ) );

		/**
		 * Fires when product's reports are removed from database.
		 *
		 * @param int $product_id Product ID.
		 * @param int $order_id   Order ID.
		 */
		do_action( 'woocommerce_analytics_delete_product', 0, $order_id );

		ReportsCache::invalidate();
	}

	/**
	 * Initialize query objects.
	 */
	protected function initialize_queries() {
		$this->clear_all_clauses();
		$this->subquery = new SqlQuery( $this->context . '_subquery' );
		$this->subquery->add_sql_clause( 'select', 'product_id' );
		$this->subquery->add_sql_clause( 'from', self::get_db_table_name() );
		$this->subquery->add_sql_clause( 'group_by', 'product_id' );
	}
}