add "duration + fixed start time" tracking mode (#859)

src/Timesheet/TrackingModeService.php

@@ -0,0 +1,62 @@
+<?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\Timesheet;
+
+use App\Configuration\TimesheetConfiguration;
+use App\Timesheet\TrackingMode\DefaultMode;
+use App\Timesheet\TrackingMode\DurationFixedStartMode;
+use App\Timesheet\TrackingMode\DurationOnlyMode;
+use App\Timesheet\TrackingMode\PunchInOutMode;
+use App\Timesheet\TrackingMode\TrackingModeInterface;
+use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
+
+class TrackingModeService
+{
+    /**
+     * @var UserDateTimeFactory
+     */
+    protected $dateTime;
+    /**
+     * @var TimesheetConfiguration
+     */
+    protected $configuration;
+
+    public function __construct(UserDateTimeFactory $dateTime, TimesheetConfiguration $configuration)
+    {
+        $this->dateTime = $dateTime;
+        $this->configuration = $configuration;
+    }
+
+    /**
+     * @return TrackingModeInterface[]
+     */
+    public function getModes(): iterable
+    {
+        return [
+            new DefaultMode($this->dateTime, $this->configuration),
+            new PunchInOutMode(),
+            new DurationOnlyMode($this->dateTime, $this->configuration),
+            new DurationFixedStartMode($this->dateTime, $this->configuration),
+        ];
+    }
+
+    public function getActiveMode(): TrackingModeInterface
+    {
+        $trackingMode = $this->configuration->getTrackingMode();
+
+        foreach ($this->getModes() as $mode) {
+            if ($mode->getId() === $trackingMode) {
+                return $mode;
+            }
+        }
+
+        throw new ServiceNotFoundException($trackingMode);
+    }
+}