<?php

namespace KupShop\BonusProgramBundle\Actions;

use KupShop\AdminBundle\Admin\ProductsFilter;
use KupShop\BonusProgramBundle\Actions\Frontend\BonusProgramHandler;
use KupShop\KupShopBundle\Context\CurrencyContext;
use KupShop\KupShopBundle\Util\Contexts;
use KupShop\KupShopBundle\Util\Price\Price;
use KupShop\KupShopBundle\Util\Price\PriceCalculator;
use KupShop\OrderDiscountBundle\Actions\AbstractAction;
use KupShop\OrderDiscountBundle\Actions\Frontend\HandlerInterface;
use KupShop\OrderDiscountBundle\Entity\OrderDiscount;
use KupShop\OrderDiscountBundle\Util\DiscountUtil;
use KupShop\OrderingBundle\Entity\Purchase\DiscountPurchaseItem;
use KupShop\OrderingBundle\Entity\Purchase\ProductPurchaseItem;
use KupShop\OrderingBundle\Entity\Purchase\PurchaseState;
use KupShop\OrderingBundle\Util\Purchase\PurchaseUtil;

class BonusProgramAction extends AbstractAction
{
    protected static $type = 'bonus_program';
    protected static $position = 120;
    protected $adminTemplate = 'actions/bonus_program.tpl';
    protected $translationSection = 'bonus_program';

    public function __construct(
        private BonusProgramHandler $bonusProgramHandler,
        private DiscountUtil $discountUtil,
        private PurchaseUtil $purchaseUtil,
    ) {
    }

    public function handleData($data)
    {
        $data = parent::handleData($data);

        $data['filter'] = ProductsFilter::cleanFilter($data['filter'] ?? []);

        return $data;
    }

    public function applyResult(PurchaseState &$purchaseState, OrderDiscount $orderDiscount, array $data)
    {
        $bonus_points = $data['handled']['bonus_points'] ?? null;
        $bonus_points_rate = $data['discount'] ?? null;

        if (!$bonus_points || !$bonus_points_rate) {
            return;
        }

        $discountPrice = toDecimal($bonus_points)->mul(toDecimal($bonus_points_rate));

        if (!$discountPrice->isPositive()) {
            if ($message = $data['messages']['warning'] ?? '') {
                $this->messages['warning'] = $message;
            }

            return;
        }

        if (ProductsFilter::isEnabled($data['filter'] ?? ['enabled' => 'N'])) {
            if (!($items = $this->purchaseUtil->getProductsApplicableByProductsFilter($purchaseState, $data['filter'] ?? []))) {
                if ($message = $data['messages']['warning'] ?? '') {
                    $this->messages['warning'] = $message;
                }

                return;
            }

            $total = $this->getItemsTotalPrice($items);
        } else {
            $items = $purchaseState->getProducts();
            $total = new Price(
                $purchaseState->getTotalPriceForDiscounts()->getPriceWithVat(),
                $purchaseState->getTotalPriceForDiscounts()->getCurrency(),
                0
            );
        }

        $currencyContext = Contexts::get(CurrencyContext::class);
        $currency = $currencyContext->getSupported()[$data['unit']] ?? $currencyContext->getDefault();

        $total = PriceCalculator::convert($total, $currency);

        if ($total->getPriceWithVat()->lessThan($discountPrice)) {
            $discountPrice = $total->getPriceWithVat();
            $bonus_points = $discountPrice->div(toDecimal($bonus_points_rate))->ceil()->asInteger();
            $data['handled']['bonus_points'] = $bonus_points;
        }

        $name = $orderDiscount->getDisplayName().' ('.$bonus_points.')';
        $data['id'] = $orderDiscount->getId();
        $note = $this->createItemNote($data, $name);
        $note = array_merge($note, $data['handled']);

        if ($this->getDivideDiscountPrice($data)) {
            $discountPrice = $this->discountUtil->divideDiscountPrice(
                products: $items,
                data: ['discount' => $discountPrice, 'unit' => $data['unit'], 'id' => $data['id']],
                name: $name,
            );
        } else {
            $discountPrice = $this->discountUtil->calculateDiscountPrice(
                $discountPrice,
                ['discount' => $discountPrice, 'unit' => $data['unit']]
            );
        }

        $purchaseState->addDiscount(new DiscountPurchaseItem(
            name: $name,
            price: $this->discountUtil->createDiscountPrice($discountPrice),
            id_discount: $orderDiscount->getId(),
            note: $note,
        ));

        if ($message = $data['messages']['success'] ?? '') {
            $this->messages['success'] = $message;
        }
    }

    public function getFrontendHandler(): ?HandlerInterface
    {
        return $this->bonusProgramHandler;
    }

    /**
     * @param ProductPurchaseItem[] $items
     */
    private function getItemsTotalPrice(array $items): Price
    {
        $totalPrice = \DecimalConstants::zero();

        foreach ($items as $item) {
            $totalPrice = $totalPrice->add($item->getPriceWithVat());
        }

        return new Price(
            $totalPrice,
            Contexts::get(CurrencyContext::class)->getActive(),
            0
        );
    }
}