<?php
/**
 * WooCommerce Updates
 *
 * Functions for updating data, used by the background updater.
 *
 * @author   WooThemes
 * @category Core
 * @package  WooCommerce/Functions
 * @version  2.6.0
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

function wc_update_200_file_paths() {
	global $wpdb;

	// Upgrade old style files paths to support multiple file paths
	$existing_file_paths = $wpdb->get_results( "SELECT meta_value, meta_id, post_id FROM {$wpdb->postmeta} WHERE meta_key = '_file_path' AND meta_value != '';" );

	if ( $existing_file_paths ) {

		foreach ( $existing_file_paths as $existing_file_path ) {

			$old_file_path = trim( $existing_file_path->meta_value );

			if ( ! empty( $old_file_path ) ) {
				$file_paths = serialize( array( md5( $old_file_path ) => $old_file_path ) );

				$wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->postmeta} SET meta_key = '_file_paths', meta_value = %s WHERE meta_id = %d", $file_paths, $existing_file_path->meta_id ) );

				$wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->prefix}woocommerce_downloadable_product_permissions SET download_id = %s WHERE product_id = %d", md5( $old_file_path ), $existing_file_path->post_id ) );

			}
		}
	}
}

function wc_update_200_permalinks() {
	// Setup default permalinks if shop page is defined
	$permalinks 	= get_option( 'woocommerce_permalinks' );
	$shop_page_id 	= wc_get_page_id( 'shop' );

	if ( empty( $permalinks ) && $shop_page_id > 0 ) {

		$base_slug 		= $shop_page_id > 0 && get_post( $shop_page_id ) ? get_page_uri( $shop_page_id ) : 'shop';

		$category_base 	= get_option( 'woocommerce_prepend_shop_page_to_urls' ) == "yes" ? trailingslashit( $base_slug ) : '';
		$category_slug 	= get_option( 'woocommerce_product_category_slug' ) ? get_option( 'woocommerce_product_category_slug' ) : _x( 'product-category', 'slug', 'woocommerce' );
		$tag_slug 		= get_option( 'woocommerce_product_tag_slug' ) ? get_option( 'woocommerce_product_tag_slug' ) : _x( 'product-tag', 'slug', 'woocommerce' );

		if ( 'yes' == get_option( 'woocommerce_prepend_shop_page_to_products' ) ) {
			$product_base = trailingslashit( $base_slug );
		} else {
			if ( ( $product_slug = get_option( 'woocommerce_product_slug' ) ) !== false && ! empty( $product_slug ) ) {
				$product_base = trailingslashit( $product_slug );
			} else {
				$product_base = trailingslashit( _x( 'product', 'slug', 'woocommerce' ) );
			}
		}

		if ( get_option( 'woocommerce_prepend_category_to_products' ) == 'yes' )
			$product_base .= trailingslashit( '%product_cat%' );

		$permalinks = array(
			'product_base' 		=> untrailingslashit( $product_base ),
			'category_base' 	=> untrailingslashit( $category_base . $category_slug ),
			'attribute_base' 	=> untrailingslashit( $category_base ),
			'tag_base' 			=> untrailingslashit( $category_base . $tag_slug ),
		);

		update_option( 'woocommerce_permalinks', $permalinks );
	}
}

function wc_update_200_subcat_display() {
	// Update subcat display settings
	if ( get_option( 'woocommerce_shop_show_subcategories' ) == 'yes' ) {
		if ( get_option( 'woocommerce_hide_products_when_showing_subcategories' ) == 'yes' ) {
			update_option( 'woocommerce_shop_page_display', 'subcategories' );
		} else {
			update_option( 'woocommerce_shop_page_display', 'both' );
		}
	}

	if ( get_option( 'woocommerce_show_subcategories' ) == 'yes' ) {
		if ( get_option( 'woocommerce_hide_products_when_showing_subcategories' ) == 'yes' ) {
			update_option( 'woocommerce_category_archive_display', 'subcategories' );
		} else {
			update_option( 'woocommerce_category_archive_display', 'both' );
		}
	}
}

function wc_update_200_taxrates() {
	global $wpdb;

	// Update tax rates
	$loop = 0;
	$tax_rates = get_option( 'woocommerce_tax_rates' );

	if ( $tax_rates )
		foreach ( $tax_rates as $tax_rate ) {

			foreach ( $tax_rate['countries'] as $country => $states ) {

				$states = array_reverse( $states );

				foreach ( $states as $state ) {

					if ( '*' == $state ) {
						$state = '';
					}

					$wpdb->insert(
						$wpdb->prefix . "woocommerce_tax_rates",
						array(
							'tax_rate_country'  => $country,
							'tax_rate_state'    => $state,
							'tax_rate'          => $tax_rate['rate'],
							'tax_rate_name'     => $tax_rate['label'],
							'tax_rate_priority' => 1,
							'tax_rate_compound' => ( 'yes' === $tax_rate['compound'] ) ? 1 : 0,
							'tax_rate_shipping' => ( 'yes' === $tax_rate['shipping'] ) ? 1 : 0,
							'tax_rate_order'    => $loop,
							'tax_rate_class'    => $tax_rate['class'],
						)
					);

					$loop++;
				}
			}
		}

	$local_tax_rates = get_option( 'woocommerce_local_tax_rates' );

	if ( $local_tax_rates )
		foreach ( $local_tax_rates as $tax_rate ) {

			$location_type = ( 'postcode' === $tax_rate['location_type'] ) ? 'postcode' : 'city';

			if ( '*' == $tax_rate['state'] ) {
				$tax_rate['state'] = '';
			}

			$wpdb->insert(
				$wpdb->prefix . "woocommerce_tax_rates",
				array(
					'tax_rate_country'  => $tax_rate['country'],
					'tax_rate_state'    => $tax_rate['state'],
					'tax_rate'          => $tax_rate['rate'],
					'tax_rate_name'     => $tax_rate['label'],
					'tax_rate_priority' => 2,
					'tax_rate_compound' => ( 'yes' === $tax_rate['compound'] ) ? 1 : 0,
					'tax_rate_shipping' => ( 'yes' === $tax_rate['shipping'] ) ? 1 : 0,
					'tax_rate_order'    => $loop,
					'tax_rate_class'    => $tax_rate['class'],
				)
			);

			$tax_rate_id = $wpdb->insert_id;

			if ( $tax_rate['locations'] ) {
				foreach ( $tax_rate['locations'] as $location ) {

					$wpdb->insert(
						$wpdb->prefix . "woocommerce_tax_rate_locations",
						array(
							'location_code' => $location,
							'tax_rate_id'   => $tax_rate_id,
							'location_type' => $location_type,
						)
					);

				}
			}

			$loop++;
		}

	update_option( 'woocommerce_tax_rates_backup', $tax_rates );
	update_option( 'woocommerce_local_tax_rates_backup', $local_tax_rates );
	delete_option( 'woocommerce_tax_rates' );
	delete_option( 'woocommerce_local_tax_rates' );
}

function wc_update_200_line_items() {
	global $wpdb;

	// Now its time for the massive update to line items - move them to the new DB tables
	// Reverse with UPDATE `wpwc_postmeta` SET meta_key = '_order_items' WHERE meta_key = '_order_items_old'
	$order_item_rows = $wpdb->get_results( "
		SELECT meta_value, post_id FROM {$wpdb->postmeta}
		WHERE meta_key = '_order_items'
	" );

	foreach ( $order_item_rows as $order_item_row ) {

		$order_items = (array) maybe_unserialize( $order_item_row->meta_value );

		foreach ( $order_items as $order_item ) {

			if ( ! isset( $order_item['line_total'] ) && isset( $order_item['taxrate'] ) && isset( $order_item['cost'] ) ) {
				$order_item['line_tax'] 			= number_format( ( $order_item['cost'] * $order_item['qty'] ) * ( $order_item['taxrate'] / 100 ), 2, '.', '' );
				$order_item['line_total'] 			= $order_item['cost'] * $order_item['qty'];
				$order_item['line_subtotal_tax'] 	= $order_item['line_tax'];
				$order_item['line_subtotal'] 		= $order_item['line_total'];
			}

			$order_item['line_tax'] 			= isset( $order_item['line_tax'] ) ? $order_item['line_tax'] : 0;
			$order_item['line_total']			= isset( $order_item['line_total'] ) ? $order_item['line_total'] : 0;
			$order_item['line_subtotal_tax'] 	= isset( $order_item['line_subtotal_tax'] ) ? $order_item['line_subtotal_tax'] : 0;
			$order_item['line_subtotal'] 		= isset( $order_item['line_subtotal'] ) ? $order_item['line_subtotal'] : 0;

			$item_id = wc_add_order_item( $order_item_row->post_id, array(
		 		'order_item_name' 		=> $order_item['name'],
		 		'order_item_type' 		=> 'line_item',
		 	) );

		 	// Add line item meta
		 	if ( $item_id ) {
			 	wc_add_order_item_meta( $item_id, '_qty', absint( $order_item['qty'] ) );
			 	wc_add_order_item_meta( $item_id, '_tax_class', $order_item['tax_class'] );
			 	wc_add_order_item_meta( $item_id, '_product_id', $order_item['id'] );
			 	wc_add_order_item_meta( $item_id, '_variation_id', $order_item['variation_id'] );
			 	wc_add_order_item_meta( $item_id, '_line_subtotal', wc_format_decimal( $order_item['line_subtotal'] ) );
			 	wc_add_order_item_meta( $item_id, '_line_subtotal_tax', wc_format_decimal( $order_item['line_subtotal_tax'] ) );
			 	wc_add_order_item_meta( $item_id, '_line_total', wc_format_decimal( $order_item['line_total'] ) );
			 	wc_add_order_item_meta( $item_id, '_line_tax', wc_format_decimal( $order_item['line_tax'] ) );

			 	$meta_rows = array();

				// Insert meta
				if ( ! empty( $order_item['item_meta'] ) ) {
					foreach ( $order_item['item_meta'] as $key => $meta ) {
						// Backwards compatibility
						if ( is_array( $meta ) && isset( $meta['meta_name'] ) ) {
							$meta_rows[] = '(' . $item_id . ',"' . esc_sql( $meta['meta_name'] ) . '","' . esc_sql( $meta['meta_value'] ) . '")';
						} else {
							$meta_rows[] = '(' . $item_id . ',"' . esc_sql( $key ) . '","' . esc_sql( $meta ) . '")';
						}
					}
				}

				// Insert meta rows at once
				if ( sizeof( $meta_rows ) > 0 ) {
					$wpdb->query( $wpdb->prepare( "
						INSERT INTO {$wpdb->prefix}woocommerce_order_itemmeta ( order_item_id, meta_key, meta_value )
						VALUES " . implode( ',', $meta_rows ) . ";
					", $order_item_row->post_id ) );
				}

				// Delete from DB (rename)
				$wpdb->query( $wpdb->prepare( "
					UPDATE {$wpdb->postmeta}
					SET meta_key = '_order_items_old'
					WHERE meta_key = '_order_items'
					AND post_id = %d
				", $order_item_row->post_id ) );
		 	}

			unset( $meta_rows, $item_id, $order_item );
		}
	}

	// Do the same kind of update for order_taxes - move to lines
	// Reverse with UPDATE `wpwc_postmeta` SET meta_key = '_order_taxes' WHERE meta_key = '_order_taxes_old'
	$order_tax_rows = $wpdb->get_results( "
		SELECT meta_value, post_id FROM {$wpdb->postmeta}
		WHERE meta_key = '_order_taxes'
	" );

	foreach ( $order_tax_rows as $order_tax_row ) {

		$order_taxes = (array) maybe_unserialize( $order_tax_row->meta_value );

		if ( ! empty( $order_taxes ) ) {
			foreach ( $order_taxes as $order_tax ) {

				if ( ! isset( $order_tax['label'] ) || ! isset( $order_tax['cart_tax'] ) || ! isset( $order_tax['shipping_tax'] ) )
					continue;

				$item_id = wc_add_order_item( $order_tax_row->post_id, array(
			 		'order_item_name' 		=> $order_tax['label'],
			 		'order_item_type' 		=> 'tax',
			 	) );

			 	// Add line item meta
			 	if ( $item_id ) {
				 	wc_add_order_item_meta( $item_id, 'compound', absint( isset( $order_tax['compound'] ) ? $order_tax['compound'] : 0 ) );
				 	wc_add_order_item_meta( $item_id, 'tax_amount', wc_clean( $order_tax['cart_tax'] ) );
				 	wc_add_order_item_meta( $item_id, 'shipping_tax_amount', wc_clean( $order_tax['shipping_tax'] ) );
				}

				// Delete from DB (rename)
				$wpdb->query( $wpdb->prepare( "
					UPDATE {$wpdb->postmeta}
					SET meta_key = '_order_taxes_old'
					WHERE meta_key = '_order_taxes'
					AND post_id = %d
				", $order_tax_row->post_id ) );

				unset( $tax_amount );
			}
		}
	}
}

function wc_update_200_images() {
	// Grab the pre 2.0 Image options and use to populate the new image options settings,
	// cleaning up afterwards like nice people do
	foreach ( array( 'catalog', 'single', 'thumbnail' ) as $value ) {

		$old_settings = array_filter( array(
			'width' => get_option( 'woocommerce_' . $value . '_image_width' ),
			'height' => get_option( 'woocommerce_' . $value . '_image_height' ),
			'crop' => get_option( 'woocommerce_' . $value . '_image_crop' ),
		) );

		if ( ! empty( $old_settings ) && update_option( 'shop_' . $value . '_image_size', $old_settings ) ) {

			delete_option( 'woocommerce_' . $value . '_image_width' );
			delete_option( 'woocommerce_' . $value . '_image_height' );
			delete_option( 'woocommerce_' . $value . '_image_crop' );

		}
	}
}

function wc_update_200_db_version() {
	WC_Install::update_db_version( '2.0.0' );
}

function wc_update_209_brazillian_state() {
	global $wpdb;

	// Update brazillian state codes
	$wpdb->update(
		$wpdb->postmeta,
		array(
			'meta_value' => 'BA',
		),
		array(
			'meta_key'   => '_billing_state',
			'meta_value' => 'BH',
		)
	);
	$wpdb->update(
		$wpdb->postmeta,
		array(
			'meta_value' => 'BA',
		),
		array(
			'meta_key'   => '_shipping_state',
			'meta_value' => 'BH',
		)
	);
	$wpdb->update(
		$wpdb->usermeta,
		array(
			'meta_value' => 'BA',
		),
		array(
			'meta_key'   => 'billing_state',
			'meta_value' => 'BH',
		)
	);
	$wpdb->update(
		$wpdb->usermeta,
		array(
			'meta_value' => 'BA',
		),
		array(
			'meta_key'   => 'shipping_state',
			'meta_value' => 'BH',
		)
	);
}

function wc_update_209_db_version() {
	WC_Install::update_db_version( '2.0.9' );
}

function wc_update_210_remove_pages() {
	// Pages no longer used
	wp_trash_post( get_option( 'woocommerce_pay_page_id' ) );
	wp_trash_post( get_option( 'woocommerce_thanks_page_id' ) );
	wp_trash_post( get_option( 'woocommerce_view_order_page_id' ) );
	wp_trash_post( get_option( 'woocommerce_change_password_page_id' ) );
	wp_trash_post( get_option( 'woocommerce_edit_address_page_id' ) );
	wp_trash_post( get_option( 'woocommerce_lost_password_page_id' ) );
}

function wc_update_210_file_paths() {
	global $wpdb;

	// Upgrade file paths to support multiple file paths + names etc
	$existing_file_paths = $wpdb->get_results( "SELECT meta_value, meta_id FROM {$wpdb->postmeta} WHERE meta_key = '_file_paths' AND meta_value != '';" );

	if ( $existing_file_paths ) {

		foreach ( $existing_file_paths as $existing_file_path ) {

			$needs_update = false;
			$new_value    = array();
			$value        = maybe_unserialize( trim( $existing_file_path->meta_value ) );

			if ( $value ) {
				foreach ( $value as $key => $file ) {
					if ( ! is_array( $file ) ) {
						$needs_update      = true;
						$new_value[ $key ] = array(
							'file' => $file,
							'name' => wc_get_filename_from_url( $file ),
						);
					} else {
						$new_value[ $key ] = $file;
					}
				}
				if ( $needs_update ) {
					$new_value = serialize( $new_value );

					$wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->postmeta} SET meta_key = %s, meta_value = %s WHERE meta_id = %d", '_downloadable_files', $new_value, $existing_file_path->meta_id ) );
				}
			}
		}
	}
}

function wc_update_210_db_version() {
	WC_Install::update_db_version( '2.1.0' );
}

function wc_update_220_shipping() {
	$woocommerce_ship_to_destination = 'shipping';

	if ( get_option( 'woocommerce_ship_to_billing_address_only' ) === 'yes' ) {
		$woocommerce_ship_to_destination = 'billing_only';
	} elseif ( get_option( 'woocommerce_ship_to_billing' ) === 'yes' ) {
		$woocommerce_ship_to_destination = 'billing';
	}

	add_option( 'woocommerce_ship_to_destination', $woocommerce_ship_to_destination, '', 'no' );
}

function wc_update_220_order_status() {
	global $wpdb;
	$wpdb->query( "
		UPDATE {$wpdb->posts} as posts
		LEFT JOIN {$wpdb->term_relationships} AS rel ON posts.ID = rel.object_id
		LEFT JOIN {$wpdb->term_taxonomy} AS tax USING( term_taxonomy_id )
		LEFT JOIN {$wpdb->terms} AS term USING( term_id )
		SET posts.post_status = 'wc-pending'
		WHERE posts.post_type = 'shop_order'
		AND posts.post_status = 'publish'
		AND tax.taxonomy = 'shop_order_status'
		AND	term.slug LIKE 'pending%';
		"
	);
	$wpdb->query( "
		UPDATE {$wpdb->posts} as posts
		LEFT JOIN {$wpdb->term_relationships} AS rel ON posts.ID = rel.object_id
		LEFT JOIN {$wpdb->term_taxonomy} AS tax USING( term_taxonomy_id )
		LEFT JOIN {$wpdb->terms} AS term USING( term_id )
		SET posts.post_status = 'wc-processing'
		WHERE posts.post_type = 'shop_order'
		AND posts.post_status = 'publish'
		AND tax.taxonomy = 'shop_order_status'
		AND	term.slug LIKE 'processing%';
		"
	);
	$wpdb->query( "
		UPDATE {$wpdb->posts} as posts
		LEFT JOIN {$wpdb->term_relationships} AS rel ON posts.ID = rel.object_id
		LEFT JOIN {$wpdb->term_taxonomy} AS tax USING( term_taxonomy_id )
		LEFT JOIN {$wpdb->terms} AS term USING( term_id )
		SET posts.post_status = 'wc-on-hold'
		WHERE posts.post_type = 'shop_order'
		AND posts.post_status = 'publish'
		AND tax.taxonomy = 'shop_order_status'
		AND	term.slug LIKE 'on-hold%';
		"
	);
	$wpdb->query( "
		UPDATE {$wpdb->posts} as posts
		LEFT JOIN {$wpdb->term_relationships} AS rel ON posts.ID = rel.object_id
		LEFT JOIN {$wpdb->term_taxonomy} AS tax USING( term_taxonomy_id )
		LEFT JOIN {$wpdb->terms} AS term USING( term_id )
		SET posts.post_status = 'wc-completed'
		WHERE posts.post_type = 'shop_order'
		AND posts.post_status = 'publish'
		AND tax.taxonomy = 'shop_order_status'
		AND	term.slug LIKE 'completed%';
		"
	);
	$wpdb->query( "
		UPDATE {$wpdb->posts} as posts
		LEFT JOIN {$wpdb->term_relationships} AS rel ON posts.ID = rel.object_id
		LEFT JOIN {$wpdb->term_taxonomy} AS tax USING( term_taxonomy_id )
		LEFT JOIN {$wpdb->terms} AS term USING( term_id )
		SET posts.post_status = 'wc-cancelled'
		WHERE posts.post_type = 'shop_order'
		AND posts.post_status = 'publish'
		AND tax.taxonomy = 'shop_order_status'
		AND	term.slug LIKE 'cancelled%';
		"
	);
	$wpdb->query( "
		UPDATE {$wpdb->posts} as posts
		LEFT JOIN {$wpdb->term_relationships} AS rel ON posts.ID = rel.object_id
		LEFT JOIN {$wpdb->term_taxonomy} AS tax USING( term_taxonomy_id )
		LEFT JOIN {$wpdb->terms} AS term USING( term_id )
		SET posts.post_status = 'wc-refunded'
		WHERE posts.post_type = 'shop_order'
		AND posts.post_status = 'publish'
		AND tax.taxonomy = 'shop_order_status'
		AND	term.slug LIKE 'refunded%';
		"
	);
	$wpdb->query( "
		UPDATE {$wpdb->posts} as posts
		LEFT JOIN {$wpdb->term_relationships} AS rel ON posts.ID = rel.object_id
		LEFT JOIN {$wpdb->term_taxonomy} AS tax USING( term_taxonomy_id )
		LEFT JOIN {$wpdb->terms} AS term USING( term_id )
		SET posts.post_status = 'wc-failed'
		WHERE posts.post_type = 'shop_order'
		AND posts.post_status = 'publish'
		AND tax.taxonomy = 'shop_order_status'
		AND	term.slug LIKE 'failed%';
		"
	);
}

function wc_update_220_variations() {
	global $wpdb;
	// Update variations which manage stock
	$update_variations = $wpdb->get_results( "
		SELECT DISTINCT posts.ID AS variation_id, posts.post_parent AS variation_parent FROM {$wpdb->posts} as posts
		LEFT OUTER JOIN {$wpdb->postmeta} AS postmeta ON posts.ID = postmeta.post_id AND postmeta.meta_key = '_stock'
		LEFT OUTER JOIN {$wpdb->postmeta} as postmeta2 ON posts.ID = postmeta2.post_id AND postmeta2.meta_key = '_manage_stock'
		WHERE posts.post_type = 'product_variation'
		AND postmeta.meta_value IS NOT NULL
		AND postmeta.meta_value != ''
		AND postmeta2.meta_value IS NULL
	" );

	foreach ( $update_variations as $variation ) {
		$parent_backorders = get_post_meta( $variation->variation_parent, '_backorders', true );
		add_post_meta( $variation->variation_id, '_manage_stock', 'yes', true );
		add_post_meta( $variation->variation_id, '_backorders', $parent_backorders ? $parent_backorders : 'no', true );
	}
}

function wc_update_220_attributes() {
	global $wpdb;
	// Update taxonomy names with correct sanitized names
	$attribute_taxonomies = $wpdb->get_results( "SELECT attribute_name, attribute_id FROM " . $wpdb->prefix . "woocommerce_attribute_taxonomies" );

	foreach ( $attribute_taxonomies as $attribute_taxonomy ) {
		$sanitized_attribute_name = wc_sanitize_taxonomy_name( $attribute_taxonomy->attribute_name );
		if ( $sanitized_attribute_name !== $attribute_taxonomy->attribute_name ) {
			if ( ! $wpdb->get_var( $wpdb->prepare( "SELECT 1=1 FROM {$wpdb->prefix}woocommerce_attribute_taxonomies WHERE attribute_name = %s;", $sanitized_attribute_name ) ) ) {
				// Update attribute
				$wpdb->update(
					"{$wpdb->prefix}woocommerce_attribute_taxonomies",
					array(
						'attribute_name' => $sanitized_attribute_name,
					),
					array(
						'attribute_id' => $attribute_taxonomy->attribute_id,
					)
				);

				// Update terms
				$wpdb->update(
					$wpdb->term_taxonomy,
					array( 'taxonomy' => wc_attribute_taxonomy_name( $sanitized_attribute_name ) ),
					array( 'taxonomy' => 'pa_' . $attribute_taxonomy->attribute_name )
				);
			}
		}
	}
}

function wc_update_220_db_version() {
	WC_Install::update_db_version( '2.2.0' );
}

function wc_update_230_options() {
	// _money_spent and _order_count may be out of sync - clear them
	delete_metadata( 'user', 0, '_money_spent', '', true );
	delete_metadata( 'user', 0, '_order_count', '', true );

	// To prevent taxes being hidden when using a default 'no address' in a store with tax inc prices, set the woocommerce_default_customer_address to use the store base address by default
	if ( '' === get_option( 'woocommerce_default_customer_address', false ) && wc_prices_include_tax() ) {
		update_option( 'woocommerce_default_customer_address', 'base' );
	}
}

function wc_update_230_db_version() {
	WC_Install::update_db_version( '2.3.0' );
}

function wc_update_240_options() {
	/**
	 * Coupon discount calculations.
	 * Maintain the old coupon logic for upgrades.
	 */
	update_option( 'woocommerce_calc_discounts_sequentially', 'yes' );
}

function wc_update_240_shipping_methods() {
	global $wpdb;
	/**
	 * Flat Rate Shipping.
	 * Update legacy options to new math based options.
	 */
	$shipping_methods = array(
		'woocommerce_flat_rates'                        => new WC_Shipping_Legacy_Flat_Rate(),
		'woocommerce_international_delivery_flat_rates' => new WC_Shipping_Legacy_International_Delivery(),
	);
	foreach ( $shipping_methods as $flat_rate_option_key => $shipping_method ) {
		// Stop this running more than once if routine is repeated
		if ( version_compare( $shipping_method->get_option( 'version', 0 ), '2.4.0', '<' ) ) {
			$has_classes                      = sizeof( WC()->shipping->get_shipping_classes() ) > 0;
			$cost_key                         = $has_classes ? 'no_class_cost' : 'cost';
			$min_fee                          = $shipping_method->get_option( 'minimum_fee' );
			$math_cost_strings                = array( 'cost' => array(), 'no_class_cost' => array() );
			$math_cost_strings[ $cost_key ][] = $shipping_method->get_option( 'cost' );

			if ( $fee = $shipping_method->get_option( 'fee' ) ) {
				$math_cost_strings[ $cost_key ][] = strstr( $fee, '%' ) ? '[fee percent="' . str_replace( '%', '', $fee ) . '" min="' . esc_attr( $min_fee ) . '"]' : $fee;
			}

			foreach ( WC()->shipping->get_shipping_classes() as $shipping_class ) {
				$rate_key                       = 'class_cost_' . $shipping_class->slug;
				$math_cost_strings[ $rate_key ] = $math_cost_strings['no_class_cost'];
			}

			if ( $flat_rates = array_filter( (array) get_option( $flat_rate_option_key, array() ) ) ) {
				foreach ( $flat_rates as $shipping_class => $rate ) {
					$rate_key = 'class_cost_' . $shipping_class;
					if ( $rate['cost'] || $rate['fee'] ) {
						$math_cost_strings[ $rate_key ][] = $rate['cost'];
						$math_cost_strings[ $rate_key ][] = strstr( $rate['fee'], '%' ) ? '[fee percent="' . str_replace( '%', '', $rate['fee'] ) . '" min="' . esc_attr( $min_fee ) . '"]' : $rate['fee'];
					}
				}
			}

			if ( 'item' === $shipping_method->type ) {
				foreach ( $math_cost_strings as $key => $math_cost_string ) {
					$math_cost_strings[ $key ] = array_filter( array_map( 'trim', $math_cost_strings[ $key ] ) );
					if ( ! empty( $math_cost_strings[ $key ] ) ) {
						$last_key                                = max( 0, sizeof( $math_cost_strings[ $key ] ) - 1 );
						$math_cost_strings[ $key ][0]            = '( ' . $math_cost_strings[ $key ][0];
						$math_cost_strings[ $key ][ $last_key ] .= ' ) * [qty]';
					}
				}
			}

			$math_cost_strings['cost'][] = $shipping_method->get_option( 'cost_per_order' );

			// Save settings
			foreach ( $math_cost_strings as $option_id => $math_cost_string ) {
				$shipping_method->settings[ $option_id ] = implode( ' + ', array_filter( $math_cost_string ) );
			}

			$shipping_method->settings['version'] = '2.4.0';
			$shipping_method->settings['type']    = 'item' === $shipping_method->settings['type'] ? 'class' : $shipping_method->settings['type'];

			update_option( $shipping_method->plugin_id . $shipping_method->id . '_settings', $shipping_method->settings );
		}
	}
}

function wc_update_240_api_keys() {
	global $wpdb;
	/**
	 * Update the old user API keys to the new Apps keys.
	 */
	$api_users = $wpdb->get_results( "SELECT user_id FROM $wpdb->usermeta WHERE meta_key = 'woocommerce_api_consumer_key'" );
	$apps_keys = array();

	// Get user data
	foreach ( $api_users as $_user ) {
		$user = get_userdata( $_user->user_id );
		$apps_keys[] = array(
			'user_id'         => $user->ID,
			'permissions'     => $user->woocommerce_api_key_permissions,
			'consumer_key'    => wc_api_hash( $user->woocommerce_api_consumer_key ),
			'consumer_secret' => $user->woocommerce_api_consumer_secret,
			'truncated_key'   => substr( $user->woocommerce_api_consumer_secret, -7 ),
		);
	}

	if ( ! empty( $apps_keys ) ) {
		// Create new apps
		foreach ( $apps_keys as $app ) {
			$wpdb->insert(
				$wpdb->prefix . 'woocommerce_api_keys',
				$app,
				array(
					'%d',
					'%s',
					'%s',
					'%s',
					'%s',
				)
			);
		}

		// Delete old user keys from usermeta
		foreach ( $api_users as $_user ) {
			$user_id = intval( $_user->user_id );
			delete_user_meta( $user_id, 'woocommerce_api_consumer_key' );
			delete_user_meta( $user_id, 'woocommerce_api_consumer_secret' );
			delete_user_meta( $user_id, 'woocommerce_api_key_permissions' );
		}
	}
}

function wc_update_240_webhooks() {
	global $wpdb;
	/**
	 * Webhooks.
	 * Make sure order.update webhooks get the woocommerce_order_edit_status hook.
	 */
	$order_update_webhooks = get_posts( array(
		'posts_per_page' => -1,
		'post_type'      => 'shop_webhook',
		'meta_key'       => '_topic',
		'meta_value'     => 'order.updated',
	) );
	foreach ( $order_update_webhooks as $order_update_webhook ) {
		$webhook = new WC_Webhook( $order_update_webhook->ID );
		$webhook->set_topic( 'order.updated' );
	}
}

function wc_update_240_refunds() {
	global $wpdb;
	/**
	 * Refunds for full refunded orders.
	 * Update fully refunded orders to ensure they have a refund line item so reports add up.
	 */
	$refunded_orders = get_posts( array(
		'posts_per_page' => -1,
		'post_type'      => 'shop_order',
		'post_status'    => array( 'wc-refunded' ),
	) );

	// Ensure emails are disabled during this update routine
	remove_all_actions( 'woocommerce_order_status_refunded_notification' );
	remove_all_actions( 'woocommerce_order_partially_refunded_notification' );
	remove_action( 'woocommerce_order_status_refunded', array( 'WC_Emails', 'send_transactional_email' ) );
	remove_action( 'woocommerce_order_partially_refunded', array( 'WC_Emails', 'send_transactional_email' ) );

	foreach ( $refunded_orders as $refunded_order ) {
		$order_total    = get_post_meta( $refunded_order->ID, '_order_total', true );
		$refunded_total = $wpdb->get_var( $wpdb->prepare( "
			SELECT SUM( postmeta.meta_value )
			FROM $wpdb->postmeta AS postmeta
			INNER JOIN $wpdb->posts AS posts ON ( posts.post_type = 'shop_order_refund' AND posts.post_parent = %d )
			WHERE postmeta.meta_key = '_refund_amount'
			AND postmeta.post_id = posts.ID
		", $refunded_order->ID ) );

		if ( $order_total > $refunded_total ) {
			wc_create_refund( array(
				'amount'     => $order_total - $refunded_total,
				'reason'     => __( 'Order fully refunded', 'woocommerce' ),
				'order_id'   => $refunded_order->ID,
				'line_items' => array(),
				'date'       => $refunded_order->post_modified,
			) );
		}
	}

	wc_delete_shop_order_transients();
}

function wc_update_240_db_version() {
	WC_Install::update_db_version( '2.4.0' );
}

function wc_update_241_variations() {
	global $wpdb;

	// Select variations that don't have any _stock_status implemented on WooCommerce 2.2
	$update_variations = $wpdb->get_results( "
		SELECT DISTINCT posts.ID AS variation_id, posts.post_parent AS variation_parent
		FROM {$wpdb->posts} as posts
		LEFT OUTER JOIN {$wpdb->postmeta} AS postmeta ON posts.ID = postmeta.post_id AND postmeta.meta_key = '_stock_status'
		WHERE posts.post_type = 'product_variation'
		AND postmeta.meta_value IS NULL
	" );

	foreach ( $update_variations as $variation ) {
		// Get the parent _stock_status
		$parent_stock_status = get_post_meta( $variation->variation_parent, '_stock_status', true );

		// Set the _stock_status
		add_post_meta( $variation->variation_id, '_stock_status', $parent_stock_status ? $parent_stock_status : 'instock', true );

		// Delete old product children array
		delete_transient( 'wc_product_children_' . $variation->variation_parent );
	}

	// Invalidate old transients such as wc_var_price
	WC_Cache_Helper::get_transient_version( 'product', true );
}

function wc_update_241_db_version() {
	WC_Install::update_db_version( '2.4.1' );
}

function wc_update_250_currency() {
	global $wpdb;
	// Fix currency settings for LAK currency.
	$current_currency = get_option( 'woocommerce_currency' );

	if ( 'KIP' === $current_currency ) {
		update_option( 'woocommerce_currency', 'LAK' );
	}

	// Update LAK currency code.
	$wpdb->update(
		$wpdb->postmeta,
		array(
			'meta_value' => 'LAK',
		),
		array(
			'meta_key'   => '_order_currency',
			'meta_value' => 'KIP',
		)
	);
}

function wc_update_250_db_version() {
	WC_Install::update_db_version( '2.5.0' );
}

function wc_update_260_options() {
	/**
	 * woocommerce_calc_shipping option has been removed in 2.6
	 */
	if ( 'no' === get_option( 'woocommerce_calc_shipping' ) ) {
		update_option( 'woocommerce_ship_to_countries', 'disabled' );
	}

	WC_Admin_Notices::add_notice( 'legacy_shipping' );
}

function wc_update_260_termmeta() {
	global $wpdb;
	/**
	 * Migrate term meta to WordPress tables
	 */
	if ( get_option( 'db_version' ) >= 34370 && $wpdb->get_var( "SHOW TABLES LIKE '{$wpdb->prefix}woocommerce_termmeta';" ) ) {
		if ( $wpdb->query( "INSERT INTO {$wpdb->termmeta} ( term_id, meta_key, meta_value ) SELECT woocommerce_term_id, meta_key, meta_value FROM {$wpdb->prefix}woocommerce_termmeta;" ) ) {
			$wpdb->query( "DROP TABLE IF EXISTS {$wpdb->prefix}woocommerce_termmeta" );
			wp_cache_flush();
		}
	}
}

function wc_update_260_zones() {
	global $wpdb;
	/**
	 * Old (table rate) shipping zones to new core shipping zones migration.
	 * zone_enabled and zone_type are no longer used, but it's safe to leave them be.
	 */
	if ( $wpdb->get_var( "SHOW COLUMNS FROM `{$wpdb->prefix}woocommerce_shipping_zones` LIKE 'zone_enabled';" ) ) {
		$wpdb->query( "ALTER TABLE {$wpdb->prefix}woocommerce_shipping_zones CHANGE `zone_type` `zone_type` VARCHAR(40) NOT NULL DEFAULT '';" );
		$wpdb->query( "ALTER TABLE {$wpdb->prefix}woocommerce_shipping_zones CHANGE `zone_enabled` `zone_enabled` INT(1) NOT NULL DEFAULT 1;" );
	}
}

function wc_update_260_zone_methods() {
	global $wpdb;

	/**
	 * Shipping zones in WC 2.6.0 use a table named woocommerce_shipping_zone_methods.
	 * Migrate the old data out of woocommerce_shipping_zone_shipping_methods into the new table and port over any known options (used by table rates and flat rate boxes).
	 */
	if ( $wpdb->get_var( "SHOW TABLES LIKE '{$wpdb->prefix}woocommerce_shipping_zone_shipping_methods';" ) ) {
		$old_methods = $wpdb->get_results( "SELECT zone_id, shipping_method_type, shipping_method_order, shipping_method_id FROM {$wpdb->prefix}woocommerce_shipping_zone_shipping_methods;" );

		if ( $old_methods ) {
			$max_new_id = $wpdb->get_var( "SELECT MAX(instance_id) FROM {$wpdb->prefix}woocommerce_shipping_zone_methods" );
			$max_old_id = $wpdb->get_var( "SELECT MAX(shipping_method_id) FROM {$wpdb->prefix}woocommerce_shipping_zone_shipping_methods" );

			// Avoid ID conflicts
			$wpdb->query( $wpdb->prepare( "ALTER TABLE {$wpdb->prefix}woocommerce_shipping_zone_methods AUTO_INCREMENT = %d;", max( $max_new_id, $max_old_id ) + 1 ) );

			// Store changes
			$changes = array();

			// Move data
			foreach ( $old_methods as $old_method ) {
				$wpdb->insert( $wpdb->prefix . 'woocommerce_shipping_zone_methods', array(
					'zone_id'      => $old_method->zone_id,
					'method_id'    => $old_method->shipping_method_type,
					'method_order' => $old_method->shipping_method_order,
				) );

				$new_instance_id = $wpdb->insert_id;

				// Move main settings
				$older_settings_key = 'woocommerce_' . $old_method->shipping_method_type . '-' . $old_method->shipping_method_id . '_settings';
				$old_settings_key   = 'woocommerce_' . $old_method->shipping_method_type . '_' . $old_method->shipping_method_id . '_settings';
				add_option( 'woocommerce_' . $old_method->shipping_method_type . '_' . $new_instance_id . '_settings', get_option( $old_settings_key, get_option( $older_settings_key ) ) );

				// Handling for table rate and flat rate box shipping.
				if ( 'table_rate' === $old_method->shipping_method_type ) {
					// Move priority settings
					add_option( 'woocommerce_table_rate_default_priority_' . $new_instance_id, get_option( 'woocommerce_table_rate_default_priority_' . $old_method->shipping_method_id ) );
					add_option( 'woocommerce_table_rate_priorities_' . $new_instance_id, get_option( 'woocommerce_table_rate_priorities_' . $old_method->shipping_method_id ) );

					// Move rates
					$wpdb->update(
						$wpdb->prefix . 'woocommerce_shipping_table_rates',
						array(
							'shipping_method_id' => $new_instance_id,
						),
						array(
							'shipping_method_id' => $old_method->shipping_method_id,
						)
					);
				} elseif ( 'flat_rate_boxes' === $old_method->shipping_method_type ) {
					$wpdb->update(
						$wpdb->prefix . 'woocommerce_shipping_flat_rate_boxes',
						array(
							'shipping_method_id' => $new_instance_id,
						),
						array(
							'shipping_method_id' => $old_method->shipping_method_id,
						)
					);
				}

				$changes[ $old_method->shipping_method_id ] = $new_instance_id;
			}

			// $changes contains keys (old method ids) and values (new instance ids) if extra processing is needed in plugins.
			// Store this to an option so extensions can pick it up later, then fire an action.
			update_option( 'woocommerce_updated_instance_ids', $changes );
			do_action( 'woocommerce_updated_instance_ids', $changes );
		}
	}

	// Change ranges used to ...
	$wpdb->query( "UPDATE {$wpdb->prefix}woocommerce_shipping_zone_locations SET location_code = REPLACE( location_code, '-', '...' );" );
}

function wc_update_260_refunds() {
	global $wpdb;
	/**
	 * Refund item qty should be negative
	 */
	$wpdb->query( "
	UPDATE {$wpdb->prefix}woocommerce_order_itemmeta as item_meta
	LEFT JOIN {$wpdb->prefix}woocommerce_order_items as items ON item_meta.order_item_id = items.order_item_id
	LEFT JOIN {$wpdb->posts} as posts ON items.order_id = posts.ID
	SET item_meta.meta_value = item_meta.meta_value * -1
	WHERE item_meta.meta_value > 0 AND item_meta.meta_key = '_qty' AND posts.post_type = 'shop_order_refund'
	" );
}

function wc_update_260_db_version() {
	WC_Install::update_db_version( '2.6.0' );
}

function wc_update_300_webhooks() {
	/**
	 * Make sure product.update webhooks get the woocommerce_product_quick_edit_save
	 * and woocommerce_product_bulk_edit_save hooks.
	 */
	$product_update_webhooks = get_posts( array(
		'posts_per_page' => -1,
		'post_type'      => 'shop_webhook',
		'meta_key'       => '_topic',
		'meta_value'     => 'product.updated',
	) );
	foreach ( $product_update_webhooks as $product_update_webhook ) {
		$webhook = new WC_Webhook( $product_update_webhook->ID );
		$webhook->set_topic( 'product.updated' );
	}
}

/**
 * Add an index to the field comment_type to improve the response time of the query
 * used by WC_Comments::wp_count_comments() to get the number of comments by type.
 *
 * @return null
 */
function wc_update_300_comment_type_index() {
	global $wpdb;

	$index_exists = $wpdb->get_row( "SHOW INDEX FROM {$wpdb->comments} WHERE column_name = 'comment_type' and key_name = 'woo_idx_comment_type'" );

	if ( is_null( $index_exists ) ) {
		// Add an index to the field comment_type to improve the response time of the query
		// used by WC_Comments::wp_count_comments() to get the number of comments by type.
		$wpdb->query( "ALTER TABLE {$wpdb->comments} ADD INDEX woo_idx_comment_type (comment_type)" );
	}
}

function wc_update_300_grouped_products() {
	global $wpdb;
	$parents = $wpdb->get_col( "SELECT DISTINCT( post_parent ) FROM {$wpdb->posts} WHERE post_parent > 0 AND post_type = 'product';" );
	foreach ( $parents as $parent_id ) {
		$parent = wc_get_product( $parent_id );
		if ( $parent && $parent->is_type( 'grouped' ) ) {
			$children_ids = get_posts( array(
				'post_parent'    => $parent_id,
				'posts_per_page' => -1,
				'post_type'      => 'product',
				'fields'         => 'ids',
			) );
			update_post_meta( $parent_id, '_children', $children_ids );

			// Update children to remove the parent.
			$wpdb->update(
				$wpdb->posts,
				array(
					'post_parent' => 0,
				),
				array(
					'post_parent' => $parent_id,
				)
			);
		}
	}
}

function wc_update_300_settings() {
	$woocommerce_shipping_tax_class = get_option( 'woocommerce_shipping_tax_class' );
	if ( '' === $woocommerce_shipping_tax_class ) {
		update_option( 'woocommerce_shipping_tax_class', 'inherit' );
	} elseif ( 'standard' === $woocommerce_shipping_tax_class ) {
		update_option( 'woocommerce_shipping_tax_class', '' );
	}
}

/**
 * Convert meta values into term for product visibility.
 */
function wc_update_300_product_visibility() {
	global $wpdb;

	WC_Install::create_terms();

	if ( $featured_term = get_term_by( 'name', 'featured', 'product_visibility' ) ) {
		$wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO {$wpdb->term_relationships} SELECT post_id, %d, 0 FROM {$wpdb->postmeta} WHERE meta_key = '_featured' AND meta_value = 'yes';", $featured_term->term_taxonomy_id ) );
	}

	if ( $exclude_search_term = get_term_by( 'name', 'exclude-from-search', 'product_visibility' ) ) {
		$wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO {$wpdb->term_relationships} SELECT post_id, %d, 0 FROM {$wpdb->postmeta} WHERE meta_key = '_visibility' AND meta_value IN ('hidden', 'catalog');", $exclude_search_term->term_taxonomy_id ) );
	}

	if ( $exclude_catalog_term = get_term_by( 'name', 'exclude-from-catalog', 'product_visibility' ) ) {
		$wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO {$wpdb->term_relationships} SELECT post_id, %d, 0 FROM {$wpdb->postmeta} WHERE meta_key = '_visibility' AND meta_value IN ('hidden', 'search');", $exclude_catalog_term->term_taxonomy_id ) );
	}

	if ( $outofstock_term = get_term_by( 'name', 'outofstock', 'product_visibility' ) ) {
		$wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO {$wpdb->term_relationships} SELECT post_id, %d, 0 FROM {$wpdb->postmeta} WHERE meta_key = '_stock_status' AND meta_value = 'outofstock';", $outofstock_term->term_taxonomy_id ) );
	}

	if ( $rating_term = get_term_by( 'name', 'rated-1', 'product_visibility' ) ) {
		$wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO {$wpdb->term_relationships} SELECT post_id, %d, 0 FROM {$wpdb->postmeta} WHERE meta_key = '_wc_average_rating' AND ROUND( meta_value ) = 1;", $rating_term->term_taxonomy_id ) );
	}

	if ( $rating_term = get_term_by( 'name', 'rated-2', 'product_visibility' ) ) {
		$wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO {$wpdb->term_relationships} SELECT post_id, %d, 0 FROM {$wpdb->postmeta} WHERE meta_key = '_wc_average_rating' AND ROUND( meta_value ) = 2;", $rating_term->term_taxonomy_id ) );
	}

	if ( $rating_term = get_term_by( 'name', 'rated-3', 'product_visibility' ) ) {
		$wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO {$wpdb->term_relationships} SELECT post_id, %d, 0 FROM {$wpdb->postmeta} WHERE meta_key = '_wc_average_rating' AND ROUND( meta_value ) = 3;", $rating_term->term_taxonomy_id ) );
	}

	if ( $rating_term = get_term_by( 'name', 'rated-4', 'product_visibility' ) ) {
		$wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO {$wpdb->term_relationships} SELECT post_id, %d, 0 FROM {$wpdb->postmeta} WHERE meta_key = '_wc_average_rating' AND ROUND( meta_value ) = 4;", $rating_term->term_taxonomy_id ) );
	}

	if ( $rating_term = get_term_by( 'name', 'rated-5', 'product_visibility' ) ) {
		$wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO {$wpdb->term_relationships} SELECT post_id, %d, 0 FROM {$wpdb->postmeta} WHERE meta_key = '_wc_average_rating' AND ROUND( meta_value ) = 5;", $rating_term->term_taxonomy_id ) );
	}
}

/**
 * Update DB Version.
 */
function wc_update_300_db_version() {
	WC_Install::update_db_version( '3.0.0' );
}
