Move analytic logic to separate classes

app/Analytic/EstimatedTimeComparisonAnalytic.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Kanboard\Analytic;
+
+use Kanboard\Core\Base;
+use Kanboard\Model\Task;
+
+/**
+ * Estimated/Spent Time Comparison
+ *
+ * @package  analytic
+ * @author   Frederic Guillot
+ */
+class EstimatedTimeComparisonAnalytic extends Base
+{
+    /**
+     * Build report
+     *
+     * @access public
+     * @param  integer   $project_id    Project id
+     * @return array
+     */
+    public function build($project_id)
+    {
+        $rows = $this->db->table(Task::TABLE)
+            ->columns('SUM(time_estimated) AS time_estimated', 'SUM(time_spent) AS time_spent', 'is_active')
+            ->eq('project_id', $project_id)
+            ->groupBy('is_active')
+            ->findAll();
+
+        $metrics = array(
+            'open' => array(
+                'time_spent' => 0,
+                'time_estimated' => 0,
+            ),
+            'closed' => array(
+                'time_spent' => 0,
+                'time_estimated' => 0,
+            ),
+        );
+
+        foreach ($rows as $row) {
+            $key = $row['is_active'] == Task::STATUS_OPEN ? 'open' : 'closed';
+            $metrics[$key]['time_spent'] = $row['time_spent'];
+            $metrics[$key]['time_estimated'] = $row['time_estimated'];
+        }
+
+        return $metrics;
+    }
+}