firefly-iii/app/Support/Twig/Extension/TransactionGroupTwig.php

<?php
/**
 * TransactionGroupTwig.php
 * Copyright (c) 2019 thegrumpydictator@gmail.com
 *
 * This file is part of Firefly III.
 *
 * Firefly III is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Firefly III is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace FireflyIII\Support\Twig\Extension;

use FireflyIII\Models\TransactionType;
use Twig_Extension;
use Twig_SimpleFunction;

/**
 * Class TransactionGroupTwig
 */
class TransactionGroupTwig extends Twig_Extension
{
    /**
     * @return array
     */
    public function getFunctions(): array
    {
        return [
            $this->transactionAmount(),
            $this->groupAmount(),
        ];
    }

    /**
     * @return Twig_SimpleFunction
     */
    public function groupAmount(): Twig_SimpleFunction
    {
        return new Twig_SimpleFunction(
            'groupAmount',
            function (array $array): string {
                $result = $this->normalGroupAmount($array);
                // now append foreign amount, if any.
                if (0 !== bccomp('0', $array['foreign_sum'])) {
                    $foreign = $this->foreignGroupAmount($array);
                    $result  = sprintf('%s (%s)', $result, $foreign);
                }

                return $result;
            },
            ['is_safe' => ['html']]
        );
    }

    /**
     * @return Twig_SimpleFunction
     */
    public function transactionAmount(): Twig_SimpleFunction
    {
        return new Twig_SimpleFunction(
            'transactionAmount',
            function (array $array): string {
                // if is not a withdrawal, amount positive.
                $result = $this->normalAmount($array);
                // now append foreign amount, if any.
                if (null !== $array['foreign_amount']) {
                    $foreign = $this->foreignAmount($array);
                    $result  = sprintf('%s (%s)', $result, $foreign);
                }

                return $result;
            },
            ['is_safe' => ['html']]
        );
    }

    /**
     * Generate foreign amount for transaction from a transaction group.
     *
     * @param array $array
     *
     * @return string
     */
    private function foreignAmount(array $array): string
    {
        $type    = $array['transaction_type_type'] ?? TransactionType::WITHDRAWAL;
        $amount  = $array['foreign_amount'] ?? '0';
        $colored = true;
        if ($type !== TransactionType::WITHDRAWAL) {
            $amount = bcmul($amount, '-1');
        }
        if ($type === TransactionType::TRANSFER) {
            $colored = false;
        }
        $result = app('amount')->formatFlat($array['foreign_currency_symbol'], (int)$array['foreign_currency_decimal_places'], $amount, $colored);
        if ($type === TransactionType::TRANSFER) {
            $result = sprintf('<span class="text-info">%s</span>', $result);
        }

        return $result;
    }

    /**
     * @param array $array
     *
     * @return string
     */
    private function foreignGroupAmount(array $array): string
    {
        // take cue from the first entry in the array:
        $first   = $array['transactions'][0];
        $type    = $first['transaction_type_type'] ?? TransactionType::WITHDRAWAL;
        $amount  = $array['foreign_sum'] ?? '0';
        $colored = true;
        if ($type !== TransactionType::WITHDRAWAL) {
            $amount = bcmul($amount, '-1');
        }
        if ($type === TransactionType::TRANSFER) {
            $colored = false;
        }
        $result = app('amount')->formatFlat($first['foreign_currency_symbol'], (int)$first['foreign_currency_decimal_places'], $amount, $colored);
        if ($type === TransactionType::TRANSFER) {
            $result = sprintf('<span class="text-info">%s</span>', $result);
        }

        return $result;
    }

    /**
     * Generate normal amount for transaction from a transaction group.
     *
     * @param array $array
     *
     * @return string
     */
    private function normalAmount(array $array): string
    {
        $type    = $array['transaction_type_type'] ?? TransactionType::WITHDRAWAL;
        $amount  = $array['amount'] ?? '0';
        $colored = true;
        if ($type !== TransactionType::WITHDRAWAL) {
            $amount = bcmul($amount, '-1');
        }
        if ($type === TransactionType::TRANSFER) {
            $colored = false;
        }
        $result = app('amount')->formatFlat($array['currency_symbol'], (int)$array['currency_decimal_places'], $amount, $colored);
        if ($type === TransactionType::TRANSFER) {
            $result = sprintf('<span class="text-info">%s</span>', $result);
        }

        return $result;
    }

    /**
     * @param array $array
     *
     * @return string
     */
    private function normalGroupAmount(array $array): string
    {
        // take cue from the first entry in the array:
        $first   = $array['transactions'][0];
        $type    = $first['transaction_type_type'] ?? TransactionType::WITHDRAWAL;
        $amount  = $array['sum'] ?? '0';
        $colored = true;
        if ($type !== TransactionType::WITHDRAWAL) {
            $amount = bcmul($amount, '-1');
        }
        if ($type === TransactionType::TRANSFER) {
            $colored = false;
        }
        $result = app('amount')->formatFlat($first['currency_symbol'], (int)$first['currency_decimal_places'], $amount, $colored);
        if ($type === TransactionType::TRANSFER) {
            $result = sprintf('<span class="text-info">%s</span>', $result);
        }

        return $result;
    }
}