Added UpdateMetric and UpdateMetricPoint commands

app/Handlers/Commands/Metric/UpdateMetricPointCommandHandler.php

@@ -0,0 +1,49 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Handlers\Commands\Metric;
+
+use CachetHQ\Cachet\Commands\Metric\UpdateMetricPointCommand;
+use CachetHQ\Cachet\Events\Metric\MetricPointWasUpdatedEvent;
+use CachetHQ\Cachet\Models\MetricPoint;
+use Carbon\Carbon;
+
+class UpdateMetricPointCommandHandler
+{
+    /**
+     * Handle the update metric point command.
+     *
+     * @param \CachetHQ\Cachet\Commands\Metric\UpdateMetricPointCommand $command
+     *
+     * @return \CachetHQ\Cachet\Models\MetricPoint
+     */
+    public function handle(UpdateMetricPointCommand $command)
+    {
+        $point = $command->point;
+        $metric = $command->metric;
+        $createdAt = $command->createdAt;
+
+        $data = [
+            'metric_id' => $metric->id,
+            'value'     => $command->value,
+        ];
+
+        if ($createdAt) {
+            $data['created_at'] = Carbon::createFromFormat('U', $createdAt)->format('Y-m-d H:i:s');
+        }
+
+        $point->update($data);
+
+        event(new MetricPointWasUpdatedEvent($point));
+
+        return $point;
+    }
+}