<?php
/**
 * Class WooCommerceDeposits
 *
 * @package WCPay\MultiCurrency\Compatibility
 */

namespace WCPay\MultiCurrency\Compatibility;

use WC_Product;
use WCPay\MultiCurrency\MultiCurrency;

/**
 * Class that controls Multi Currency Compatibility with WooCommerce Deposits Plugin.
 */
class WooCommerceDeposits extends BaseCompatibility {

	/**
	 * Init the class.
	 *
	 * @return void
	 */
	public function init() {
		if ( class_exists( 'WC_Deposits' ) ) {
			/*
			 * Multi-currency support was added to WooCommerce Deposits in version 2.0.1.
			 *
			 * This prevents the loading of the compatibility class for Deposits in versions
			 * of Deposits that support multi-currency.
			 *
			 * @see https://github.com/woocommerce/woocommerce-deposits/pull/425
			 * @see https://github.com/woocommerce/woocommerce-deposits/issues/506
			 */
			if ( version_compare( WC_DEPOSITS_VERSION, '2.0.1', '>=' ) ) {
				return;
			}

			// Add compatibility filters here.
			add_action( 'woocommerce_deposits_create_order', [ $this, 'modify_order_currency' ] );
			add_filter( 'woocommerce_get_cart_contents', [ $this, 'modify_cart_item_deposit_amounts' ] );
			add_filter( 'woocommerce_product_get__wc_deposit_amount', [ $this, 'modify_cart_item_deposit_amount_meta' ], 10, 2 );
			add_filter( MultiCurrency::FILTER_PREFIX . 'should_convert_product_price', [ $this, 'maybe_convert_product_prices_for_deposits' ], 10, 2 );
		}
	}

	/**
	 * Converts the currency for deposit amounts of each cart item, only applies if deposits are enabled on the product.
	 *
	 * @param array $cart_contents The items on the cart.
	 *
	 * @return array
	 */
	public function modify_cart_item_deposit_amounts( $cart_contents ) {
		foreach ( $cart_contents as $cart_item_key => $cart_item ) {
			if ( ! empty( $cart_item['is_deposit'] ) && isset( $cart_item['deposit_amount'] ) ) {
					$deposit_amount                                    = (float) $cart_item['deposit_amount'];
					$cart_contents[ $cart_item_key ]['deposit_amount'] = $this->multi_currency->get_price( $deposit_amount, 'product' );
			}
		}

		return $cart_contents;
	}

	/**
	 * Converts the currency for deposit amounts of each cart item, only applies if deposits are enabled on the product.
	 *
	 * @param float       $amount The amount to convert.
	 * @param \WC_Product $product The product to check for.
	 *
	 * @return float
	 */
	public function modify_cart_item_deposit_amount_meta( $amount, $product ) {
		if ( 'percent' === $this->get_product_deposit_type( $product ) && $this->utils->is_call_in_backtrace( [ 'WC_Deposits_Cart_Manager->deposits_form_output' ] ) ) {
			return $this->multi_currency->get_price( $amount, 'product' );
		}
		return $amount;
	}

	/**
	 * Defines if the product prices need to be converted when calculating totals,
	 * if the product's deposit type is a payment plan, then it shouldn't convert it.
	 *
	 * @param   bool        $result   The previous flag for converting the price.
	 * @param   \WC_Product $product  The product to check for.
	 *
	 * @return  bool                        Whether the price should be converted or not.
	 */
	public function maybe_convert_product_prices_for_deposits( $result, $product ) {
		if ( 'plan' === $this->get_product_deposit_type( $product ) && $this->utils->is_call_in_backtrace( [ 'WC_Cart->calculate_totals' ] ) ) {
			return false;
		}
		return $result;
	}

	/**
	 * When creating a new order for the remaining amount, forces the new order currency
	 * to be the same with the deposited order currency.
	 *
	 * @param   integer $order_id  The created order ID.
	 *
	 * @return  void
	 */
	public function modify_order_currency( $order_id ) {
		// We need to get the original order from the first item meta.
		$order            = wc_get_order( $order_id );
		$order_items      = $order->get_items();
		$first_order_item = 0 < ( is_countable( $order_items ) ? count( $order_items ) : 0 ) ? reset( $order_items ) : null;

		if ( ! $first_order_item ) {
			return;
		}

		// Check if the original order ID is attached to the order item.
		$original_order_id = wc_get_order_item_meta( $first_order_item->get_id(), '_original_order_id', true );
		if ( ! $original_order_id ) {
			return;
		}

		// Check if the original order still exists.
		$original_order = wc_get_order( $original_order_id );
		if ( ! $original_order ) {
			return;
		}

		// Get the new and old order currencies, and match them if unmatched.
		$saved_currency    = $order->get_currency( 'view' );
		$original_currency = $original_order->get_currency( 'view' );
		if ( $saved_currency !== $original_currency ) {
			$order->set_currency( $original_currency );
			$order->save();
		}
	}

	/**
	 * Gets the deposit type of a product if deposits are enabled for the product.
	 *
	 * @param   \WC_Product $product  The product to check.
	 *
	 * @return  string|false The product deposit type if deposits are enabled on it, or false.
	 */
	private function get_product_deposit_type( $product ) {
		$product_has_deposit = class_exists( 'WC_Deposits_Product_Manager' ) && call_user_func( [ 'WC_Deposits_Product_Manager', 'deposits_enabled' ], $product );
		if ( $product_has_deposit ) {
			return call_user_func( [ 'WC_Deposits_Product_Manager', 'get_deposit_type' ], $product );
		}
		return false;
	}
}