<?php

/**
 * Handles the adding of products to WooCommerce cart.
 *
 * @package WooCommerce\PayPalCommerce\Button\Helper
 */
declare (strict_types=1);
namespace WooCommerce\PayPalCommerce\Button\Helper;

use Exception;
use WC_Cart;
use WC_Data_Store;
/**
 * Class CartProductsHelper
 */
class CartProductsHelper
{
    /**
     * The cart
     *
     * @var ?WC_Cart
     */
    private $cart;
    /**
     * The product data store.
     *
     * @var WC_Data_Store
     */
    protected $product_data_store;
    /**
     * The added cart item IDs
     *
     * @var array
     */
    private $cart_item_keys = array();
    /**
     * CheckoutFormSaver constructor.
     *
     * @param WC_Data_Store $product_data_store The data store for products.
     */
    public function __construct(WC_Data_Store $product_data_store)
    {
        $this->product_data_store = $product_data_store;
    }
    /**
     * Sets a new cart instance.
     *
     * @param WC_Cart $cart The cart.
     * @return void
     */
    public function set_cart(WC_Cart $cart): void
    {
        $this->cart = $cart;
    }
    /**
     * Returns products information from a data array.
     *
     * @param array $data The data array.
     *
     * @return array|null
     */
    public function products_from_data(array $data): ?array
    {
        $products = array();
        if (!isset($data['products']) || !is_array($data['products'])) {
            return null;
        }
        foreach ($data['products'] as $product) {
            $product = $this->product_from_data($product);
            if ($product) {
                $products[] = $product;
            }
        }
        return $products;
    }
    /**
     * Returns product information from a data array.
     *
     * @param array $product The product data array, usually provided by the product page form.
     * @return array|null
     */
    public function product_from_data(array $product): ?array
    {
        if (!isset($product['quantity']) || !isset($product['id'])) {
            return null;
        }
        $wc_product = wc_get_product((int) $product['id']);
        if (!$wc_product) {
            return null;
        }
        return array('product' => $wc_product, 'quantity' => (int) $product['quantity'], 'variations' => $product['variations'] ?? array(), 'booking' => $product['booking'] ?? null, 'extra' => $product['extra'] ?? null);
    }
    /**
     * Adds products to cart.
     *
     * @param array $products Array of products to be added to cart.
     * @return bool
     * @throws Exception Add to cart methods throw an exception on fail.
     */
    public function add_products(array $products): bool
    {
        $success = \true;
        foreach ($products as $product) {
            // Add extras to POST, they are usually added by custom plugins.
            if ($product['extra'] && is_array($product['extra'])) {
                // Handle cases like field[].
                $query = http_build_query($product['extra']);
                parse_str($query, $extra);
                foreach ($extra as $key => $value) {
                    $_POST[$key] = $value;
                }
            }
            if ($product['product']->is_type('booking')) {
                $success = $success && $this->add_booking_product($product['product'], $product['booking']);
            } elseif ($product['product']->is_type('variable')) {
                if (empty($product['variations']) || !is_array($product['variations'])) {
                    $product['variations'] = array();
                }
                $success = $success && $this->add_variable_product($product['product'], $product['quantity'], $product['variations']);
            } else {
                $success = $success && $this->add_product($product['product'], $product['quantity']);
            }
        }
        if (!$success) {
            throw new Exception('Error adding products to cart.');
        }
        return \true;
    }
    /**
     * Adds a product to the cart.
     *
     * @param \WC_Product $product The Product.
     * @param int         $quantity The Quantity.
     *
     * @return bool
     * @throws Exception When product could not be added.
     */
    public function add_product(\WC_Product $product, int $quantity): bool
    {
        if (!$this->cart) {
            throw new Exception('Cart not set.');
        }
        $cart_item_key = $this->cart->add_to_cart($product->get_id(), $quantity);
        if ($cart_item_key) {
            $this->cart_item_keys[] = $cart_item_key;
        }
        return \false !== $cart_item_key;
    }
    /**
     * Adds variations to the cart.
     *
     * @param \WC_Product $product The Product.
     * @param int         $quantity The Quantity.
     * @param array       $post_variations The variations.
     *
     * @return bool
     * @throws Exception When product could not be added.
     */
    public function add_variable_product(\WC_Product $product, int $quantity, array $post_variations): bool
    {
        if (!$this->cart) {
            throw new Exception('Cart not set.');
        }
        $variations = array();
        foreach ($post_variations as $key => $value) {
            if (!isset($value['name'], $value['value'])) {
                continue;
            }
            $variations[$value['name']] = $value['value'];
        }
        // @phpstan-ignore method.notFound
        $variation_id = $this->product_data_store->find_matching_product_variation($product, $variations);
        // ToDo: Check stock status for variation.
        $cart_item_key = $this->cart->add_to_cart($product->get_id(), $quantity, $variation_id, $variations);
        if ($cart_item_key) {
            $this->cart_item_keys[] = $cart_item_key;
        }
        return \false !== $cart_item_key;
    }
    /**
     * Adds booking to the cart.
     *
     * @param \WC_Product $product The Product.
     * @param array       $data Data used by the booking plugin.
     *
     * @return bool
     * @throws Exception When product could not be added.
     */
    public function add_booking_product(\WC_Product $product, array $data): bool
    {
        if (!$this->cart) {
            throw new Exception('Cart not set.');
        }
        if (!is_callable('wc_bookings_get_posted_data')) {
            // @phpstan-ignore function.impossibleType
            return \false;
        }
        $cart_item_data = array('booking' => wc_bookings_get_posted_data($data, $product));
        $cart_item_key = $this->cart->add_to_cart($product->get_id(), 1, 0, array(), $cart_item_data);
        if ($cart_item_key) {
            $this->cart_item_keys[] = $cart_item_key;
        }
        return \false !== $cart_item_key;
    }
    /**
     * Removes stored cart items from WooCommerce cart.
     *
     * @return void
     * @throws Exception Throws if there's a failure removing the cart items.
     */
    public function remove_cart_items(): void
    {
        if (!$this->cart) {
            throw new Exception('Cart not set.');
        }
        foreach ($this->cart_item_keys as $cart_item_key) {
            if (!$cart_item_key) {
                continue;
            }
            $this->cart->remove_cart_item($cart_item_key);
        }
    }
    /**
     * Returns the cart item keys of the items added to cart.
     *
     * @return array
     */
    public function cart_item_keys(): array
    {
        return $this->cart_item_keys;
    }
}