added export module (#538)

src/Export/Renderer/RendererTrait.php

@@ -0,0 +1,43 @@
+<?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\Export\Renderer;
+
+use App\Entity\Timesheet;
+
+trait RendererTrait
+{
+    /**
+     * @param Timesheet[] $timesheets
+     * @return array
+     */
+    protected function calculateSummary(array $timesheets)
+    {
+        $summary = [];
+
+        foreach ($timesheets as $timesheet) {
+            $id = $timesheet->getProject()->getCustomer()->getId() . '_' . $timesheet->getProject()->getId();
+            if (!isset($summary[$id])) {
+                $summary[$id] = [
+                    'customer' => $timesheet->getProject()->getCustomer()->getName(),
+                    'project' => $timesheet->getProject()->getName(),
+                    'currency' => $timesheet->getProject()->getCustomer()->getCurrency(),
+                    'rate' => 0,
+                    'duration' => 0,
+                ];
+            }
+            $summary[$id]['rate'] += $timesheet->getRate();
+            $summary[$id]['duration'] += $timesheet->getDuration();
+        }
+
+        asort($summary);
+
+        return $summary;
+    }
+}