<?php
/**
 * Copyright © 2016 Magento. All rights reserved.
 * See COPYING.txt for license details.
 */

namespace Magento\Bundle\Pricing\Price;

use Magento\Bundle\Pricing\Adjustment\BundleCalculatorInterface;
use Magento\Catalog\Model\Product;
use Magento\Catalog\Model\Product\Configuration\Item\ItemInterface;
use Magento\Catalog\Pricing\Price as CatalogPrice;
use Magento\Catalog\Pricing\Price\ConfiguredPriceInterface;

/**
 * Configured price model
 */
class ConfiguredPrice extends CatalogPrice\FinalPrice implements ConfiguredPriceInterface
{
    /**
     * Price type configured
     */
    const PRICE_CODE = self::CONFIGURED_PRICE_CODE;

    /**
     * @var BundleCalculatorInterface
     */
    protected $calculator;

    /**
     * @var null|ItemInterface
     */
    protected $item;

    /**
     * @param Product $saleableItem
     * @param float $quantity
     * @param BundleCalculatorInterface $calculator
     * @param \Magento\Framework\Pricing\PriceCurrencyInterface $priceCurrency
     * @param ItemInterface $item
     */
    public function __construct(
        Product $saleableItem,
        $quantity,
        BundleCalculatorInterface $calculator,
        \Magento\Framework\Pricing\PriceCurrencyInterface $priceCurrency,
        ItemInterface $item = null
    ) {
        $this->item = $item;
        parent::__construct($saleableItem, $quantity, $calculator, $priceCurrency);
    }

    /**
     * @param ItemInterface $item
     * @return $this
     */
    public function setItem(ItemInterface $item)
    {
        $this->item = $item;
        return $this;
    }

    /**
     * Get Options with attached Selections collection
     *
     * @return array|\Magento\Bundle\Model\ResourceModel\Option\Collection
     */
    public function getOptions()
    {
        $bundleProduct = $this->product;
        $bundleOptions = [];
        /** @var \Magento\Bundle\Model\Product\Type $typeInstance */
        $typeInstance = $bundleProduct->getTypeInstance();

        // get bundle options
        $optionsQuoteItemOption = $this->item->getOptionByCode('bundle_option_ids');
        $bundleOptionsIds = $optionsQuoteItemOption ? unserialize($optionsQuoteItemOption->getValue()) : [];
        if ($bundleOptionsIds) {
            /** @var \Magento\Bundle\Model\ResourceModel\Option\Collection $optionsCollection */
            $optionsCollection = $typeInstance->getOptionsByIds($bundleOptionsIds, $bundleProduct);
            // get and add bundle selections collection
            $selectionsQuoteItemOption = $this->item->getOptionByCode('bundle_selection_ids');
            $bundleSelectionIds = unserialize($selectionsQuoteItemOption->getValue());
            if ($bundleSelectionIds) {
                $selectionsCollection = $typeInstance->getSelectionsByIds($bundleSelectionIds, $bundleProduct);
                $bundleOptions = $optionsCollection->appendSelections($selectionsCollection, true);
            }
        }
        return $bundleOptions;
    }

    /**
     * Option amount calculation for bundle product
     *
     * @param float $baseValue
     * @return \Magento\Framework\Pricing\Amount\AmountInterface
     */
    public function getConfiguredAmount($baseValue = 0.)
    {
        $selectionPriceList = [];
        foreach ($this->getOptions() as $option) {
            $selectionPriceList = array_merge(
                $selectionPriceList,
                $this->calculator->createSelectionPriceList($option, $this->product)
            );
        }
        return $this->calculator->calculateBundleAmount(
            $baseValue,
            $this->product,
            $selectionPriceList
        );
    }

    /**
     * Get price value
     *
     * @return float
     */
    public function getValue()
    {
        if ($this->item) {
            $configuredOptionsAmount = $this->getConfiguredAmount()->getBaseAmount();
            return parent::getValue() +
                $this->priceInfo
                    ->getPrice(BundleDiscountPrice::PRICE_CODE)
                    ->calculateDiscount($configuredOptionsAmount);
        } else {
            return parent::getValue();
        }
    }

    /**
     * Get Amount for configured price which is included amount for all selected options
     *
     * @return \Magento\Framework\Pricing\Amount\AmountInterface
     */
    public function getAmount()
    {
        return $this->item ? $this->getConfiguredAmount($this->getBasePrice()->getValue()) : parent::getAmount();
    }
}