1 files changed, 124 insertions, 0 deletions
diff --git a/app/Model/SubtaskForecast.php b/app/Model/SubtaskForecast.php
new file mode 100644
index 00000000..263aa27a
--- /dev/null
+++ b/app/Model/SubtaskForecast.php
@@ -0,0 +1,124 @@
+<?php
+
+namespace Model;
+
+use DateTime;
+use DateInterval;
+
+/**
+ * Subtask Forecast
+ *
+ * @package  model
+ * @author   Frederic Guillot
+ */
+class SubtaskForecast extends Base
+{
+    /**
+     * Get not completed subtasks with an estimate sorted by postition
+     *
+     * @access public
+     * @param  integer   $user_id
+     * @return array
+     */
+    public function getSubtasks($user_id)
+    {
+        return $this->db
+                    ->table(Subtask::TABLE)
+                    ->columns(Subtask::TABLE.'.id', Task::TABLE.'.project_id', Subtask::TABLE.'.task_id', Subtask::TABLE.'.title', Subtask::TABLE.'.time_estimated')
+                    ->join(Task::TABLE, 'id', 'task_id')
+                    ->asc(Task::TABLE.'.position')
+                    ->asc(Subtask::TABLE.'.position')
+                    ->gt(Subtask::TABLE.'.time_estimated', 0)
+                    ->eq(Subtask::TABLE.'.status', Subtask::STATUS_TODO)
+                    ->eq(Subtask::TABLE.'.user_id', $user_id)
+                    ->findAll();
+    }
+
+    /**
+     * Get the start date for the forecast
+     *
+     * @access public
+     * @param  integer   $user_id
+     * @return array
+     */
+    public function getStartDate($user_id)
+    {
+        $subtask = $this->db->table(Subtask::TABLE)
+                            ->columns(Subtask::TABLE.'.time_estimated', SubtaskTimeTracking::TABLE.'.start')
+                            ->eq(SubtaskTimeTracking::TABLE.'.user_id', $user_id)
+                            ->eq(SubtaskTimeTracking::TABLE.'.end', 0)
+                            ->status('status', Subtask::STATUS_INPROGRESS)
+                            ->join(SubtaskTimeTracking::TABLE, 'subtask_id', 'id')
+                            ->findOne();
+
+        if ($subtask && $subtask['time_estimated'] && $subtask['start']) {
+            return date('Y-m-d H:i', $subtask['start'] + $subtask['time_estimated'] * 3600);
+        }
+
+        return date('Y-m-d H:i');
+    }
+
+    /**
+     * Get all calendar events according to the user timetable and the subtasks estimates
+     *
+     * @access public
+     * @param  integer   $user_id
+     * @param  string    $end         End date of the calendar
+     * @return array
+     */
+    public function getCalendarEvents($user_id, $end)
+    {
+        $events = array();
+        $start_date = new DateTime($this->getStartDate($user_id));
+        $timetable = $this->timetable->calculate($user_id, $start_date, new DateTime($end));
+        $subtasks = $this->getSubtasks($user_id);
+        $total = count($subtasks);
+        $offset = 0;
+
+        foreach ($timetable as $slot) {
+
+            $interval = $this->dateParser->getHours($slot[0], $slot[1]);
+            $start = $slot[0]->getTimestamp();
+
+            if ($slot[0] < $start_date) {
+
+                if (! $this->dateParser->withinDateRange($start_date, $slot[0], $slot[1])) {
+                    continue;
+                }
+
+                $interval = $this->dateParser->getHours(new DateTime, $slot[1]);
+                $start = time();
+            }
+
+            while ($offset < $total) {
+
+                $event = array(
+                    'id' => $subtasks[$offset]['id'].'-'.$subtasks[$offset]['task_id'].'-'.$offset,
+                    'subtask_id' => $subtasks[$offset]['id'],
+                    'title' => t('#%d', $subtasks[$offset]['task_id']).' '.$subtasks[$offset]['title'],
+                    'url' => $this->helper->url->to('task', 'show', array('task_id' => $subtasks[$offset]['task_id'], 'project_id' => $subtasks[$offset]['project_id'])),
+                    'editable' => false,
+                    'start' => date('Y-m-d\TH:i:s', $start),
+                );
+
+                if ($subtasks[$offset]['time_estimated'] <= $interval) {
+
+                    $start += $subtasks[$offset]['time_estimated'] * 3600;
+                    $interval -= $subtasks[$offset]['time_estimated'];
+                    $offset++;
+
+                    $event['end'] = date('Y-m-d\TH:i:s', $start);
+                    $events[] = $event;
+                }
+                else {
+                    $subtasks[$offset]['time_estimated'] -= $interval;
+                    $event['end'] = $slot[1]->format('Y-m-d\TH:i:s');
+                    $events[] = $event;
+                    break;
+                }
+            }
+        }
+
+        return $events;
+    }
+}