fix invoice budget calculation (#3024)

src/Invoice/Hydrator/BudgetHydratorTrait.php

@@ -0,0 +1,38 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Invoice\Hydrator;
+
+use App\Invoice\InvoiceModel;
+use App\Model\BudgetStatisticModel;
+
+trait BudgetHydratorTrait
+{
+    protected function getBudgetValues(string $prefix, BudgetStatisticModel $statistic, InvoiceModel $model): array
+    {
+        $formatter = $model->getFormatter();
+        $currency = $model->getCurrency();
+
+        $budgetOpen = $statistic->getBudgetOpenRelative();
+        $budgetTimeOpen = $statistic->getTimeBudgetOpenRelative();
+
+        if ($model->getTemplate()->isDecimalDuration()) {
+            $budgetOpenDuration = $formatter->getFormattedDecimalDuration($budgetTimeOpen);
+        } else {
+            $budgetOpenDuration = $formatter->getFormattedDuration($budgetTimeOpen);
+        }
+
+        return [
+            $prefix . 'budget_open' => $formatter->getFormattedMoney($budgetOpen, $currency),
+            $prefix . 'budget_open_plain' => $budgetOpen,
+            $prefix . 'time_budget_open' => $budgetOpenDuration,
+            $prefix . 'time_budget_open_plain' => $budgetTimeOpen,
+        ];
+    }
+}