<?php

defined('ABSPATH') or exit;

/**
 * Interface to WooCommerce. Handles version differences / backwards compatibility.
 *
 * @since 2.3.7.2
 */
class WJECF_WC
{
    protected static $_instance;

    /**
     * Check whether WooCommerce version is greater or equal than $req_version.
     *
     * @param string @req_version The version to compare to
     * @param mixed $req_version
     *
     * @return bool true if WooCommerce is at least the given version
     */
    public function check_woocommerce_version($req_version)
    {
        return version_compare(wc()->version, $req_version, '>=');
    }

    /**
     * Returns an array of items like stored in WC_Discounts since WC3.2.0.
     *
     * Note: $item->price is in cents; use wc_remove_number_precision( $item->price ) to compare it to the actual amount
     *
     *     $item->key           = $key;
     *     $item->object        = $cart_item;
     *     $item->product       = $cart_item['data'];
     *     $item->quantity      = $cart_item['quantity'];
     *     $item->price         = self::wc_add_number_precision_deep( $item->product->get_price() ) * $item->quantity;
     *
     * @param null|WC_Discounts $wc_discounts
     *
     * @return array of items (stdClass)
     */
    public function get_discount_items($wc_discounts = null)
    {
        if (is_null($wc_discounts)) {
            $wc_discounts = new WJECF_WC_Discounts(WC()->cart);
        }

        return $wc_discounts->get_items();
    }

    /**
     * Convert a cart_item to an item as generated by WC_Discounts.
     *
     * @since 2.6.0
     *
     * @param mixed      $cart_item
     * @param null|mixed $key
     */
    public function cart_item_to_discount_item($cart_item, $key = null)
    {
        $item = new stdClass();
        $item->object = $cart_item;
        $item->product = $cart_item['data'];
        $item->quantity = $cart_item['quantity'];
        $item->price = $this->wc_add_number_precision_deep($item->product->get_price()) * $item->quantity;

        if (isset($key)) {
            $item->key = $key;
        } elseif (isset($cart_item['key'])) {
            $item->key = $cart_item['key'];
        } else {
            // For WC prior to 3.2.0: lookup the cart item key because $cart_item['key'] is not set
            $item->key = array_search($cart_item, WC()->cart->get_cart());
        }

        return $item;
    }

    /**
     * Add precision to an array of number and return an array of int.
     *
     * @since  2.6.0 (taken from WC 3.2.3)
     *
     * @param array $value number to add precision to
     *
     * @return int
     */
    public function wc_add_number_precision_deep($value)
    {
        // Since WooCommerce 3.2.0.
        if (function_exists('wc_add_number_precision_deep')) {
            return wc_add_number_precision_deep($value);
        }

        if (is_array($value)) {
            foreach ($value as $key => $subvalue) {
                $value[$key] = $this->wc_add_number_precision_deep($subvalue);
            }
        } else {
            $value = $this->wc_add_number_precision($value);
        }

        return $value;
    }

    /**
     * Add precision to a number and return an int.
     *
     * @since  2.6.0 (taken from WC 3.2.3)
     *
     * @param float $value number to add precision to
     *
     * @return int
     */
    public function wc_add_number_precision($value)
    {
        // Since WooCommerce 3.2.0.
        if (function_exists('wc_add_number_precision')) {
            return wc_add_number_precision($value);
        }

        $precision = pow(10, wc_get_price_decimals());  // Since WC 2.3.0

        return intval(round($value * $precision));
    }

    /**
     * Remove precision from a number and return a float.
     *
     * @since  2.6.0 (taken from WC 3.2.3)
     *
     * @param float $value number to add precision to
     *
     * @return float
     */
    public function wc_remove_number_precision($value)
    {
        // Since WooCommerce 3.2.0.
        if (function_exists('wc_remove_number_precision')) {
            return wc_remove_number_precision($value);
        }

        $precision = pow(10, wc_get_price_decimals());  // Since WC 2.3.0

        return $value / $precision;
    }

    /**
     * Returns a specific item in the cart.
     *
     * @param string $cart_item_key cart item key
     *
     * @return array Item data
     */
    public function get_cart_item($cart_item_key)
    {
        return WC()->cart->get_cart_item($cart_item_key);
    }

    /**
     * Get categories of a product (and anchestors).
     *
     * @param int $product_id
     *
     * @return array product_cat_ids
     */
    public function wc_get_product_cat_ids($product_id)
    {
        return wc_get_product_cat_ids($product_id);
    }

    /**
     * Coupon types that apply to individual products. Controls which validation rules will apply.
     *
     * @since  2.5.0
     *
     * @return array
     */
    public function wc_get_product_coupon_types()
    {
        return wc_get_product_coupon_types();
    }

    public function wc_get_cart_coupon_types()
    {
        return wc_get_cart_coupon_types();
    }

    /**
     * Output a list of variation attributes for use in the cart forms.
     *
     * @param array $args
     *
     * @since 2.5.1
     */
    public function wc_dropdown_variation_attribute_options($args = [])
    {
        return wc_dropdown_variation_attribute_options($args);
    }

    /**
     * Get attibutes/data for an individual variation from the database and maintain its integrity.
     *
     * @since  2.5.1
     *
     * @param int $variation_id
     *
     * @return array
     */
    public function wc_get_product_variation_attributes($variation_id)
    {
        return wc_get_product_variation_attributes($variation_id);
    }

    public function find_matching_product_variation($product, $match_attributes = [])
    {
        return WC_Data_Store::load('product')->find_matching_product_variation($product, $match_attributes);
    }

    /**
     * @since 2.4.0 for WC 2.7 compatibility
     *
     * Get a WC_Coupon object
     *
     * @param string|WC_Coupon|WP_Post $coupon The coupon code or a WC_Coupon object
     *
     * @return WC_Coupon The coupon object
     */
    public function get_coupon($coupon)
    {
        if ($coupon instanceof WP_Post) {
            $coupon = $coupon->ID;
        }
        if (!$coupon instanceof WC_Coupon) {
            // By code
            $coupon = new WC_Coupon($coupon);
        }

        return $coupon;
    }

    /**
     * Returns the user of the order (in case of wp-admin) or the current user (in case of a frontend cart).
     *
     * @since 3.2.7
     *
     * @param WC_Discounts $wc_discounts
     *
     * @return false|WP_User
     */
    public function get_user($wc_discounts = null)
    {
        if ($wc_discounts->get_object() instanceof WC_Order) {
            return $wc_discounts->get_object()->get_user();
        }

        return wp_get_current_user();
    }

    // INSTANCE

    /**
     * Singleton Instance.
     *
     * @static
     *
     * @return Singleton Instance
     */
    public static function instance()
    {
        if (is_null(self::$_instance)) {
            self::$_instance = new self();
        }

        return self::$_instance;
    }

    /**
     * Wrap a data object (WC 2.7 introduced WC_Data).
     *
     * @deprecated 3.0.0
     *
     * @param type  $object
     * @param mixed $use_pool
     *
     * @return WJECF_Wrap
     */
    public function wrap($object, $use_pool = true)
    {
        _deprecated_function('WJECF_WC::wrap', '3.0.0');

        return WJECF_Wrap::wrap($object, $use_pool);
    }
}