mirror of
https://github.com/Part-DB/Part-DB-server.git
synced 2025-06-26 03:38:47 +02:00
217 lines
7.7 KiB
PHP
217 lines
7.7 KiB
PHP
<?php
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/**
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* This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
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*
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* Copyright (C) 2019 - 2022 Jan Böhmer (https://github.com/jbtronics)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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declare(strict_types=1);
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namespace App\Services\Parts;
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use App\Entity\Parts\Part;
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use App\Entity\PriceInformations\Currency;
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use App\Entity\PriceInformations\Pricedetail;
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use Brick\Math\BigDecimal;
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use Brick\Math\RoundingMode;
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use Doctrine\ORM\PersistentCollection;
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use Locale;
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use function count;
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/**
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* @see \App\Tests\Services\Parts\PricedetailHelperTest
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*/
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class PricedetailHelper
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{
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protected string $locale;
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public function __construct(protected string $base_currency)
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{
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$this->locale = Locale::getDefault();
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}
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/**
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* Determines the highest amount, for which you get additional discount.
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* This function determines the highest min_discount_quantity for the given part.
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*/
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public function getMaxDiscountAmount(Part $part): ?float
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{
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$orderdetails = $part->getOrderdetails(true);
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$max = 0;
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foreach ($orderdetails as $orderdetail) {
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$pricedetails = $orderdetail->getPricedetails();
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//The orderdetail must have pricedetails, otherwise this will not work!
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if (0 === (is_countable($pricedetails) ? count($pricedetails) : 0)) {
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continue;
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}
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if ($pricedetails instanceof PersistentCollection) {
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/* Pricedetails in orderdetails are ordered by min discount quantity,
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so our first object is our min order amount for the current orderdetail */
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$max_amount = $pricedetails->last()->getMinDiscountQuantity();
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} else {
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// We have to sort the pricedetails manually
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$array = $pricedetails->map(
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static fn(Pricedetail $pricedetail) => $pricedetail->getMinDiscountQuantity()
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)->toArray();
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sort($array);
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$max_amount = end($array);
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}
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if ($max_amount > $max) {
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$max = $max_amount;
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}
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}
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if ($max > 0.0) {
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return $max;
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}
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return null;
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}
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/**
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* Determines the minimum amount of the part that can be ordered.
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*
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* @param Part $part the part for which the minimum order amount should be determined
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*
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* @return float
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*/
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public function getMinOrderAmount(Part $part): ?float
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{
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$orderdetails = $part->getOrderdetails(true);
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$min = INF;
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foreach ($orderdetails as $orderdetail) {
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$pricedetails = $orderdetail->getPricedetails();
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//The orderdetail must have pricedetails, otherwise this will not work!
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if (0 === (is_countable($pricedetails) ? count($pricedetails) : 0)) {
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continue;
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}
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/* Pricedetails in orderdetails are ordered by min discount quantity,
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so our first object is our min order amount for the current orderdetail */
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$min_amount = $pricedetails[0]->getMinDiscountQuantity();
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if ($min_amount < $min) {
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$min = $min_amount;
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}
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}
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if ($min < INF) {
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return $min;
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}
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return null;
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}
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/**
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* Calculates the average price of a part, when ordering the amount $amount.
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*
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* @param Part $part the part for which the average price should be calculated
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* @param float|null $amount The order amount for which the average price should be calculated.
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* If set to null, the mininmum order amount for the part is used.
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* @param Currency|null $currency The currency in which the average price should be calculated
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*
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* @return BigDecimal|null The Average price as bcmath string. Returns null, if it was not possible to calculate the
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* price for the given
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*/
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public function calculateAvgPrice(Part $part, ?float $amount = null, ?Currency $currency = null): ?BigDecimal
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{
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if (null === $amount) {
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$amount = $this->getMinOrderAmount($part);
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}
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if (null === $amount) {
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return null;
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}
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$orderdetails = $part->getOrderdetails(true);
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$avg = BigDecimal::zero();
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$count = 0;
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//Find the price for the amount, for the given
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foreach ($orderdetails as $orderdetail) {
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$pricedetail = $orderdetail->findPriceForQty($amount);
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//When we don't have information about this amount, ignore it
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if (!$pricedetail instanceof Pricedetail) {
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continue;
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}
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$converted = $this->convertMoneyToCurrency($pricedetail->getPricePerUnit(), $pricedetail->getCurrency(), $currency);
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//Ignore price information that can not be converted to base currency.
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if ($converted instanceof BigDecimal) {
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$avg = $avg->plus($converted);
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++$count;
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}
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}
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if (0 === $count) {
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return null;
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}
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return $avg->dividedBy($count, Pricedetail::PRICE_PRECISION, RoundingMode::HALF_UP);
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}
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/**
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* Converts the given value in origin currency to the choosen target currency.
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*
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* @param Currency|null $originCurrency The currency the $value is given in.
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* Set to null, to use global base currency.
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* @param Currency|null $targetCurrency The target currency, to which $value should be converted.
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* Set to null, to use global base currency.
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*
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* @return BigDecimal|null The value in $targetCurrency given as bcmath string.
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* Returns null, if it was not possible to convert between both values (e.g. when the exchange rates are missing)
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*/
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public function convertMoneyToCurrency(BigDecimal $value, ?Currency $originCurrency = null, ?Currency $targetCurrency = null): ?BigDecimal
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{
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//Skip conversion, if both currencies are same
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if ($originCurrency === $targetCurrency) {
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return $value;
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}
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$val_base = $value;
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//Convert value to base currency
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if ($originCurrency instanceof Currency) {
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//Without an exchange rate we can not calculate the exchange rate
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if (!$originCurrency->getExchangeRate() instanceof BigDecimal || $originCurrency->getExchangeRate()->isZero()) {
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return null;
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}
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$val_base = $value->multipliedBy($originCurrency->getExchangeRate());
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}
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$val_target = $val_base;
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//Convert value in base currency to target currency
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if ($targetCurrency instanceof Currency) {
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//Without an exchange rate we can not calculate the exchange rate
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if (!$targetCurrency->getExchangeRate() instanceof BigDecimal) {
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return null;
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}
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$val_target = $val_base->multipliedBy($targetCurrency->getInverseExchangeRate());
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}
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return $val_target->toScale(Pricedetail::PRICE_PRECISION, RoundingMode::HALF_UP);
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}
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}
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