<?php
/**
 * WooCommerce Admin Functions
 *
 * @author   WooThemes
 * @category Core
 * @package  WooCommerce/Admin/Functions
 * @version  2.4.0
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

/**
 * Get all WooCommerce screen ids.
 *
 * @return array
 */
function wc_get_screen_ids() {

	$wc_screen_id = sanitize_title( __( 'WooCommerce', 'woocommerce' ) );
	$screen_ids   = array(
		'toplevel_page_' . $wc_screen_id,
		$wc_screen_id . '_page_wc-reports',
		$wc_screen_id . '_page_wc-shipping',
		$wc_screen_id . '_page_wc-settings',
		$wc_screen_id . '_page_wc-status',
		$wc_screen_id . '_page_wc-addons',
		'toplevel_page_wc-reports',
		'product_page_product_attributes',
		'edit-product',
		'product',
		'edit-shop_coupon',
		'shop_coupon',
		'edit-product_cat',
		'edit-product_tag',
		'profile',
		'user-edit'
	);

	foreach ( wc_get_order_types() as $type ) {
		$screen_ids[] = $type;
		$screen_ids[] = 'edit-' . $type;
	}

	return apply_filters( 'woocommerce_screen_ids', $screen_ids );
}

/**
 * Create a page and store the ID in an option.
 *
 * @param mixed $slug Slug for the new page
 * @param string $option Option name to store the page's ID
 * @param string $page_title (default: '') Title for the new page
 * @param string $page_content (default: '') Content for the new page
 * @param int $post_parent (default: 0) Parent for the new page
 * @return int page ID
 */
function wc_create_page( $slug, $option = '', $page_title = '', $page_content = '', $post_parent = 0 ) {
	global $wpdb;

	$option_value     = get_option( $option );

	if ( $option_value > 0 ) {
		$page_object = get_post( $option_value );

		if ( 'page' === $page_object->post_type && ! in_array( $page_object->post_status, array( 'pending', 'trash', 'future', 'auto-draft' ) ) ) {
			// Valid page is already in place
			return $page_object->ID;
		}
	}

	if ( strlen( $page_content ) > 0 ) {
		// Search for an existing page with the specified page content (typically a shortcode)
		$valid_page_found = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status NOT IN ( 'pending', 'trash', 'future', 'auto-draft' ) AND post_content LIKE %s LIMIT 1;", "%{$page_content}%" ) );
	} else {
		// Search for an existing page with the specified page slug
		$valid_page_found = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status NOT IN ( 'pending', 'trash', 'future', 'auto-draft' )  AND post_name = %s LIMIT 1;", $slug ) );
	}

	$valid_page_found = apply_filters( 'woocommerce_create_page_id', $valid_page_found, $slug, $page_content );

	if ( $valid_page_found ) {
		if ( $option ) {
			update_option( $option, $valid_page_found );
		}
		return $valid_page_found;
	}

	// Search for a matching valid trashed page
	if ( strlen( $page_content ) > 0 ) {
		// Search for an existing page with the specified page content (typically a shortcode)
		$trashed_page_found = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status = 'trash' AND post_content LIKE %s LIMIT 1;", "%{$page_content}%" ) );
	} else {
		// Search for an existing page with the specified page slug
		$trashed_page_found = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status = 'trash' AND post_name = %s LIMIT 1;", $slug ) );
	}

	if ( $trashed_page_found ) {
		$page_id   = $trashed_page_found;
		$page_data = array(
			'ID'             => $page_id,
			'post_status'    => 'publish',
		);
	 	wp_update_post( $page_data );
	} else {
		$page_data = array(
			'post_status'    => 'publish',
			'post_type'      => 'page',
			'post_author'    => 1,
			'post_name'      => $slug,
			'post_title'     => $page_title,
			'post_content'   => $page_content,
			'post_parent'    => $post_parent,
			'comment_status' => 'closed'
		);
		$page_id = wp_insert_post( $page_data );
	}

	if ( $option ) {
		update_option( $option, $page_id );
	}

	return $page_id;
}

/**
 * Output admin fields.
 *
 * Loops though the woocommerce options array and outputs each field.
 *
 * @param array $options Opens array to output
 */
function woocommerce_admin_fields( $options ) {

	if ( ! class_exists( 'WC_Admin_Settings' ) ) {
		include 'class-wc-admin-settings.php';
	}

	WC_Admin_Settings::output_fields( $options );
}

/**
 * Update all settings which are passed.
 *
 * @param array $options
 */
function woocommerce_update_options( $options ) {

	if ( ! class_exists( 'WC_Admin_Settings' ) ) {
		include 'class-wc-admin-settings.php';
	}

	WC_Admin_Settings::save_fields( $options );
}

/**
 * Get a setting from the settings API.
 *
 * @param mixed $option_name
 * @param mixed $default
 * @return string
 */
function woocommerce_settings_get_option( $option_name, $default = '' ) {

	if ( ! class_exists( 'WC_Admin_Settings' ) ) {
		include 'class-wc-admin-settings.php';
	}

	return WC_Admin_Settings::get_option( $option_name, $default );
}

/**
 * Save order items.
 *
 * @since 2.2
 * @param int $order_id Order ID
 * @param array $items Order items to save
 */
function wc_save_order_items( $order_id, $items ) {
	// Allow other plugins to check change in order items before they are saved
	do_action( 'woocommerce_before_save_order_items', $order_id, $items );

	global $wpdb;

	// Order items + fees
	$subtotal     = 0;
	$total        = 0;
	$subtotal_tax = 0;
	$total_tax    = 0;
	$taxes        = array( 'items' => array(), 'shipping' => array() );

	if ( isset( $items['order_item_id'] ) ) {
		$line_total = $line_subtotal = $line_tax = $line_subtotal_tax = array();

		foreach ( $items['order_item_id'] as $item_id ) {

			$item_id = absint( $item_id );

			if ( isset( $items['order_item_name'][ $item_id ] ) ) {
				$wpdb->update(
					$wpdb->prefix . 'woocommerce_order_items',
					array( 'order_item_name' => wc_clean( wp_unslash( $items['order_item_name'][ $item_id ] ) ) ),
					array( 'order_item_id' => $item_id ),
					array( '%s' ),
					array( '%d' )
				);
			}

			if ( isset( $items['order_item_qty'][ $item_id ] ) ) {
				wc_update_order_item_meta( $item_id, '_qty', wc_stock_amount( $items['order_item_qty'][ $item_id ] ) );
			}

			if ( isset( $items['order_item_tax_class'][ $item_id ] ) ) {
				wc_update_order_item_meta( $item_id, '_tax_class', wc_clean( $items['order_item_tax_class'][ $item_id ] ) );
			}

			// Get values. Subtotals might not exist, in which case copy value from total field
			$line_total[ $item_id ]        = isset( $items['line_total'][ $item_id ] ) ? $items['line_total'][ $item_id ] : 0;
			$line_subtotal[ $item_id ]     = isset( $items['line_subtotal'][ $item_id ] ) ? $items['line_subtotal'][ $item_id ] : $line_total[ $item_id ];
			$line_tax[ $item_id ]          = isset( $items['line_tax'][ $item_id ] ) ? $items['line_tax'][ $item_id ] : array();
			$line_subtotal_tax[ $item_id ] = isset( $items['line_subtotal_tax'][ $item_id ] ) ? $items['line_subtotal_tax'][ $item_id ] : $line_tax[ $item_id ];

			// Format taxes
			$line_taxes          = array_map( 'wc_format_decimal', $line_tax[ $item_id ] );
			$line_subtotal_taxes = array_map( 'wc_format_decimal', $line_subtotal_tax[ $item_id ] );

			// Update values
			wc_update_order_item_meta( $item_id, '_line_subtotal', wc_format_decimal( $line_subtotal[ $item_id ] ) );
			wc_update_order_item_meta( $item_id, '_line_total', wc_format_decimal( $line_total[ $item_id ] ) );
			wc_update_order_item_meta( $item_id, '_line_subtotal_tax', array_sum( $line_subtotal_taxes ) );
			wc_update_order_item_meta( $item_id, '_line_tax', array_sum( $line_taxes ) );

			// Save line tax data - Since 2.2
			wc_update_order_item_meta( $item_id, '_line_tax_data', array( 'total' => $line_taxes, 'subtotal' => $line_subtotal_taxes ) );
			$taxes['items'][] = $line_taxes;

			// Total up
			$subtotal     += wc_format_decimal( $line_subtotal[ $item_id ] );
			$total        += wc_format_decimal( $line_total[ $item_id ] );
			$subtotal_tax += array_sum( $line_subtotal_taxes );
			$total_tax    += array_sum( $line_taxes );

			// Clear meta cache
			wp_cache_delete( $item_id, 'order_item_meta' );
		}
	}

	// Save meta
	$meta_keys   = isset( $items['meta_key'] ) ? $items['meta_key'] : array();
	$meta_values = isset( $items['meta_value'] ) ? $items['meta_value'] : array();

	foreach ( $meta_keys as $id => $meta_key ) {
		$meta_value = ( empty( $meta_values[ $id ] ) && ! is_numeric( $meta_values[ $id ] ) ) ? '' : $meta_values[ $id ];

		// Delele blank item meta entries
		if ( $meta_key === '' && $meta_value === '' ) {
			$wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->prefix}woocommerce_order_itemmeta WHERE meta_id = %d", $id ) );
		} else {

			$wpdb->update(
				$wpdb->prefix . 'woocommerce_order_itemmeta',
				array(
					'meta_key'   => wp_unslash( $meta_key ),
					'meta_value' => wp_unslash( $meta_value )
				),
				array( 'meta_id' => $id ),
				array( '%s', '%s' ),
				array( '%d' )
			);
		}
	}

	// Shipping Rows
	$order_shipping = 0;

	if ( isset( $items['shipping_method_id'] ) ) {

		foreach ( $items['shipping_method_id'] as $item_id ) {
			$item_id      = absint( $item_id );
			$method_id    = isset( $items['shipping_method'][ $item_id ] ) ? wc_clean( $items['shipping_method'][ $item_id ] ) : '';
			$method_title = isset( $items['shipping_method_title'][ $item_id ] ) ? wc_clean( wp_unslash( $items['shipping_method_title'][ $item_id ] ) ) : '';
			$cost         = isset( $items['shipping_cost'][ $item_id ] ) ? wc_format_decimal( $items['shipping_cost'][ $item_id ] ) : '';
			$ship_taxes   = isset( $items['shipping_taxes'][ $item_id ] ) ? array_map( 'wc_format_decimal', $items['shipping_taxes'][ $item_id ] ) : array();

			$wpdb->update(
				$wpdb->prefix . 'woocommerce_order_items',
				array( 'order_item_name' => $method_title ),
				array( 'order_item_id' => $item_id ),
				array( '%s' ),
				array( '%d' )
			);

			wc_update_order_item_meta( $item_id, 'method_id', $method_id );
			wc_update_order_item_meta( $item_id, 'cost', $cost );
			wc_update_order_item_meta( $item_id, 'taxes', $ship_taxes );

			$taxes['shipping'][] = $ship_taxes;

			$order_shipping += $cost;
		}
	}

	// Taxes
	$order_taxes        = isset( $items['order_taxes'] ) ? $items['order_taxes'] : array();
	$taxes_items        = array();
	$taxes_shipping     = array();
	$total_tax          = 0;
	$total_shipping_tax = 0;

	// Sum items taxes
	foreach ( $taxes['items'] as $rates ) {

		foreach ( $rates as $id => $value ) {

			if ( isset( $taxes_items[ $id ] ) ) {
				$taxes_items[ $id ] += $value;
			} else {
				$taxes_items[ $id ] = $value;
			}
		}
	}

	// Sum shipping taxes
	foreach ( $taxes['shipping'] as $rates ) {

		foreach ( $rates as $id => $value ) {

			if ( isset( $taxes_shipping[ $id ] ) ) {
				$taxes_shipping[ $id ] += $value;
			} else {
				$taxes_shipping[ $id ] = $value;
			}
		}
	}

	// Update order taxes
	foreach ( $order_taxes as $item_id => $rate_id ) {

		if ( isset( $taxes_items[ $rate_id ] ) ) {
			$_total = wc_format_decimal( $taxes_items[ $rate_id ] );
			wc_update_order_item_meta( $item_id, 'tax_amount', $_total );

			$total_tax += $_total;
		}

		if ( isset( $taxes_shipping[ $rate_id ] ) ) {
			$_total = wc_format_decimal( $taxes_shipping[ $rate_id ] );
			wc_update_order_item_meta( $item_id, 'shipping_tax_amount', $_total );

			$total_shipping_tax += $_total;
		}
	}

	// Update order shipping total
	update_post_meta( $order_id, '_order_shipping', $order_shipping );

	// Update cart discount from item totals
	update_post_meta( $order_id, '_cart_discount', $subtotal - $total );
	update_post_meta( $order_id, '_cart_discount_tax', $subtotal_tax - $total_tax );

	// Update totals
	update_post_meta( $order_id, '_order_total', wc_format_decimal( $items['_order_total'] ) );

	// Update tax
	update_post_meta( $order_id, '_order_tax', wc_format_decimal( $total_tax ) );
	update_post_meta( $order_id, '_order_shipping_tax', wc_format_decimal( $total_shipping_tax ) );

	// Remove old values
	delete_post_meta( $order_id, '_shipping_method' );
	delete_post_meta( $order_id, '_shipping_method_title' );

	// Set the currency
	add_post_meta( $order_id, '_order_currency', get_woocommerce_currency(), true );

	// Update version after saving
	update_post_meta( $order_id, '_order_version', WC_VERSION );

	// Inform other plugins that the items have been saved
	do_action( 'woocommerce_saved_order_items', $order_id, $items );
}