<?php
/**
 * Post Data
 *
 * Standardises certain post data on save.
 *
 * @package WooCommerce\Classes\Data
 * @version 2.2.0
 */

use Automattic\WooCommerce\Internal\DataStores\Orders\DataSynchronizer;
use Automattic\WooCommerce\Internal\ProductAttributesLookup\LookupDataStore as ProductAttributesLookupDataStore;
use Automattic\WooCommerce\Proxies\LegacyProxy;
use Automattic\WooCommerce\Utilities\OrderUtil;

defined( 'ABSPATH' ) || exit;

/**
 * Post data class.
 */
class WC_Post_Data {

	/**
	 * Editing term.
	 *
	 * @var object
	 */
	private static $editing_term = null;

	/**
	 * Hook in methods.
	 */
	public static function init() {
		add_filter( 'post_type_link', array( __CLASS__, 'variation_post_link' ), 10, 2 );
		add_action( 'shutdown', array( __CLASS__, 'do_deferred_product_sync' ), 10 );
		add_action( 'set_object_terms', array( __CLASS__, 'force_default_term' ), 10, 5 );
		add_action( 'set_object_terms', array( __CLASS__, 'delete_product_query_transients' ) );
		add_action( 'deleted_term_relationships', array( __CLASS__, 'delete_product_query_transients' ) );
		add_action( 'woocommerce_product_set_stock_status', array( __CLASS__, 'delete_product_query_transients' ) );
		add_action( 'woocommerce_product_set_visibility', array( __CLASS__, 'delete_product_query_transients' ) );
		add_action( 'woocommerce_product_type_changed', array( __CLASS__, 'product_type_changed' ), 10, 3 );

		add_action( 'edit_term', array( __CLASS__, 'edit_term' ), 10, 3 );
		add_action( 'edited_term', array( __CLASS__, 'edited_term' ), 10, 3 );
		add_filter( 'update_order_item_metadata', array( __CLASS__, 'update_order_item_metadata' ), 10, 5 );
		add_filter( 'update_post_metadata', array( __CLASS__, 'update_post_metadata' ), 10, 5 );
		add_filter( 'wp_insert_post_data', array( __CLASS__, 'wp_insert_post_data' ) );
		add_filter( 'oembed_response_data', array( __CLASS__, 'filter_oembed_response_data' ), 10, 2 );
		add_filter( 'wp_untrash_post_status', array( __CLASS__, 'wp_untrash_post_status' ), 10, 3 );

		// Status transitions.
		add_action( 'transition_post_status', array( __CLASS__, 'transition_post_status' ), 10, 3 );
		add_action( 'delete_post', array( __CLASS__, 'delete_post' ) );
		add_action( 'wp_trash_post', array( __CLASS__, 'trash_post' ) );
		add_action( 'untrashed_post', array( __CLASS__, 'untrash_post' ) );
		add_action( 'before_delete_post', array( __CLASS__, 'before_delete_order' ) );
		add_action( 'woocommerce_before_delete_order', array( __CLASS__, 'before_delete_order' ) );

		// Meta cache flushing.
		add_action( 'updated_post_meta', array( __CLASS__, 'flush_object_meta_cache' ), 10, 4 );
		add_action( 'updated_order_item_meta', array( __CLASS__, 'flush_object_meta_cache' ), 10, 4 );
	}

	/**
	 * Link to parent products when getting permalink for variation.
	 *
	 * @param string  $permalink Permalink.
	 * @param WP_Post $post      Post data.
	 *
	 * @return string
	 */
	public static function variation_post_link( $permalink, $post ) {
		if ( isset( $post->ID, $post->post_type ) && 'product_variation' === $post->post_type ) {
			$variation = wc_get_product( $post->ID );

			if ( $variation && $variation->get_parent_id() ) {
				return $variation->get_permalink();
			}
		}
		return $permalink;
	}

	/**
	 * Sync products queued to sync.
	 */
	public static function do_deferred_product_sync() {
		global $wc_deferred_product_sync;

		if ( ! empty( $wc_deferred_product_sync ) ) {
			$wc_deferred_product_sync = wp_parse_id_list( $wc_deferred_product_sync );
			array_walk( $wc_deferred_product_sync, array( __CLASS__, 'deferred_product_sync' ) );
		}
	}

	/**
	 * Sync a product.
	 *
	 * @param int $product_id Product ID.
	 */
	public static function deferred_product_sync( $product_id ) {
		$product = wc_get_product( $product_id );

		if ( is_callable( array( $product, 'sync' ) ) ) {
			$product->sync( $product );
		}
	}

	/**
	 * When a post status changes.
	 *
	 * @param string  $new_status New status.
	 * @param string  $old_status Old status.
	 * @param WP_Post $post       Post data.
	 */
	public static function transition_post_status( $new_status, $old_status, $post ) {
		if ( ( 'publish' === $new_status || 'publish' === $old_status ) && in_array( $post->post_type, array( 'product', 'product_variation' ), true ) ) {
			self::delete_product_query_transients();
		}
	}

	/**
	 * Delete product view transients when needed e.g. when post status changes, or visibility/stock status is modified.
	 */
	public static function delete_product_query_transients() {
		WC_Cache_Helper::get_transient_version( 'product_query', true );
	}

	/**
	 * Handle type changes.
	 *
	 * @since 3.0.0
	 *
	 * @param WC_Product $product Product data.
	 * @param string     $from    Origin type.
	 * @param string     $to      New type.
	 */
	public static function product_type_changed( $product, $from, $to ) {
		/**
		 * Filter to prevent variations from being deleted while switching from a variable product type to a variable product type.
		 *
		 * @since 5.0.0
		 *
		 * @param bool       A boolean value of true will delete the variations.
		 * @param WC_Product $product Product data.
		 * @return string    $from    Origin type.
		 * @param string     $to      New type.
		 */
		if ( apply_filters( 'woocommerce_delete_variations_on_product_type_change', 'variable' === $from && 'variable' !== $to, $product, $from, $to ) ) {
			// If the product is no longer variable, we should ensure all variations are removed.
			$data_store = WC_Data_Store::load( 'product-variable' );
			$data_store->delete_variations( $product->get_id(), true );
		}
	}

	/**
	 * When editing a term, check for product attributes.
	 *
	 * @param  int    $term_id  Term ID.
	 * @param  int    $tt_id    Term taxonomy ID.
	 * @param  string $taxonomy Taxonomy slug.
	 */
	public static function edit_term( $term_id, $tt_id, $taxonomy ) {
		if ( strpos( $taxonomy, 'pa_' ) === 0 ) {
			self::$editing_term = get_term_by( 'id', $term_id, $taxonomy );
		} else {
			self::$editing_term = null;
		}
	}

	/**
	 * When a term is edited, check for product attributes and update variations.
	 *
	 * @param  int    $term_id  Term ID.
	 * @param  int    $tt_id    Term taxonomy ID.
	 * @param  string $taxonomy Taxonomy slug.
	 */
	public static function edited_term( $term_id, $tt_id, $taxonomy ) {
		if ( ! is_null( self::$editing_term ) && strpos( $taxonomy, 'pa_' ) === 0 ) {
			$edited_term = get_term_by( 'id', $term_id, $taxonomy );

			if ( $edited_term->slug !== self::$editing_term->slug ) {
				global $wpdb;

				$wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->postmeta} SET meta_value = %s WHERE meta_key = %s AND meta_value = %s;", $edited_term->slug, 'attribute_' . sanitize_title( $taxonomy ), self::$editing_term->slug ) );

				$wpdb->query(
					$wpdb->prepare(
						"UPDATE {$wpdb->postmeta} SET meta_value = REPLACE( meta_value, %s, %s ) WHERE meta_key = '_default_attributes'",
						serialize( self::$editing_term->taxonomy ) . serialize( self::$editing_term->slug ),
						serialize( $edited_term->taxonomy ) . serialize( $edited_term->slug )
					)
				);
			}
		} else {
			self::$editing_term = null;
		}
	}

	/**
	 * Ensure floats are correctly converted to strings based on PHP locale.
	 *
	 * @param  null   $check      Whether to allow updating metadata for the given type.
	 * @param  int    $object_id  Object ID.
	 * @param  string $meta_key   Meta key.
	 * @param  mixed  $meta_value Meta value. Must be serializable if non-scalar.
	 * @param  mixed  $prev_value If specified, only update existing metadata entries with the specified value. Otherwise, update all entries.
	 * @return null|bool
	 */
	public static function update_order_item_metadata( $check, $object_id, $meta_key, $meta_value, $prev_value ) {
		if ( ! empty( $meta_value ) && is_float( $meta_value ) ) {

			// Convert float to string.
			$meta_value = wc_float_to_string( $meta_value );

			// Update meta value with new string.
			update_metadata( 'order_item', $object_id, $meta_key, $meta_value, $prev_value );

			return true;
		}
		return $check;
	}

	/**
	 * Ensure floats are correctly converted to strings based on PHP locale.
	 *
	 * @param  null   $chec