Improved metric repository for per-db methods. Closes #921

app/Repositories/Metric/SqliteRepository.php

@@ -0,0 +1,99 @@
+<?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\Repositories\Metric;
+
+use CachetHQ\Cachet\Facades\Setting as SettingFacade;
+use CachetHQ\Cachet\Models\Metric;
+use DateInterval;
+use Illuminate\Support\Facades\DB;
+use Jenssegers\Date\Date;
+
+class SqliteRepository implements MetricInterface
+{
+    /**
+     * The timezone the status page is showing in.
+     *
+     * @var string
+     */
+    protected $dateTimeZone;
+
+    /**
+     * Creates a new instance of the metric repository.
+     *
+     * @return void
+     */
+    public function __construct()
+    {
+        $this->dateTimeZone = SettingFacade::get('app_timezone');
+    }
+
+    /**
+     * Returns metrics for a given hour.
+     *
+     * @param \CachetHQ\Cachet\Models\Metric $metric
+     * @param int                            $hour
+     *
+     * @return int
+     */
+    public function getPointsByHour(Metric $metric, $hour)
+    {
+        $dateTime = (new Date())->setTimezone($this->dateTimeZone);
+        $dateTime->sub(new DateInterval('PT'.$hour.'H'));
+        $hourInterval = $dateTime->format('YmdH');
+
+        $points = $metric->points()
+                    ->whereRaw('strftime("%Y%m%d%H", created_at) = "'.$hourInterval.'"')
+                    ->groupBy(DB::raw('strftime("%H", created_at)'));
+
+        if (!isset($metric->calc_type) || $metric->calc_type == Metric::CALC_SUM) {
+            $value = $points->sum('value');
+        } elseif ($metric->calc_type == Metric::CALC_AVG) {
+            $value = $points->avg('value');
+        }
+
+        if ($value === 0 && $metric->default_value != $value) {
+            return $metric->default_value;
+        }
+
+        return round($value, $metric->places);
+    }
+
+    /**
+     * Returns metrics for the week.
+     *
+     * @param \CachetHQ\Cachet\Models\Metric $metric
+     *
+     * @return int
+     */
+    public function getPointsForDayInWeek(Metric $metric, $day)
+    {
+        $dateTime = (new Date())->setTimezone($this->dateTimeZone);
+        $dateTime->sub(new DateInterval('P'.$day.'D'));
+
+        $points = $metric->points()
+                    ->whereRaw('created_at > date("now", "-7 day")')
+                    ->whereRaw('strftime("%Y%m%d", created_at) = "'.$dateTime->format('Ymd').'"')
+                    ->groupBy(DB::raw('strftime("%Y%m%d", created_at)'));
+
+        if (!isset($metric->calc_type) || $metric->calc_type == Metric::CALC_SUM) {
+            $value = $points->sum('value');
+        } elseif ($metric->calc_type == Metric::CALC_AVG) {
+            $value = $points->avg('value');
+        }
+
+        if ($value === 0 && $metric->default_value != $value) {
+            return $metric->default_value;
+        }
+
+        return round($value, $metric->places);
+    }
+}