<?php
App::uses('AppModel', 'Model');

class Task extends AppModel
{
    public $tasks = array(
            'cache_exports' => array(
                    'type' => 'cache_exports',
                    'timer' => 0,
                    'scheduled_time' => '12:00',
                    'process_id' => '',
                    'description' => 'Generates export caches for every export type and for every organisation. This process is heavy and it is highly advised to leave export cache generation as an on-demand function for users. STIX export not included.',
                    'next_execution_time' => 1391601600,
                    'message' => 'Not scheduled yet.'

            ),
            'pull_all' => array(
                    'type' => 'pull_all',
                    'timer' => 0,
                    'scheduled_time' => '12:00',
                    'process_id' => '',
                    'description' => 'Initiates a full pull for all eligible instances.',
                    'next_execution_time' => 1391601600,
                    'message' => 'Not scheduled yet.'

            ),
            'push_all' => array(
                    'type' => 'push_all',
                    'timer' => 0,
                    'scheduled_time' => '12:00',
                    'process_id' => '',
                    'description' => 'Initiates a full push for all eligible instances.',
                    'next_execution_time' => 1391601600,
                    'message' => 'Not scheduled yet.'
            ),
            'cache_feeds' => array(
                    'type' => 'cache_feeds',
                    'timer' => 0,
                    'scheduled_time' => '12:00',
                    'process_id' => '',
                    'description' => 'Initiates the caching of all feeds.',
                    'next_execution_time' => 1391601600,
                    'message' => 'Not scheduled yet.'
            ),
            'fetch_feeds' => array(
                    'type' => 'fetch_feeds',
                    'timer' => 0,
                    'scheduled_time' => '12:00',
                    'process_id' => '',
                    'description' => 'Initiates the pull of all feeds.',
                    'next_execution_time' => 1391601600,
                    'message' => 'Not scheduled yet.'
            ),
    );

    // takes a time in the 24h format (13:49) and an integer representing the number of hours
    // by which it needs to be incremeneted. Returns a string in the first parameters format
    public function breakTime($time, $timeToAdd)
    {
        $temp = explode(':', $time);
        $hours = $timeToAdd%24;
        $temp[0] = $temp[0] + $hours;
        if ($temp[0] > 23) {
            $temp[0] = $temp[0] - 24;
        }
        return $temp[0] . ':' . $temp[1];
    }

    public function reQueue($task, $worker, $shell, $action, $userId, $taskId)
    {
        $time = time();
        // Keep adding the timer's time interval until we get a date that is in the future! We don't want to keep queuing tasks in the past since they will execute until it catches up.
        while ($task['Task']['next_execution_time'] < $time) {
            $task['Task']['next_execution_time'] = strtotime('+' . $task['Task']['timer'] . ' hours', $task['Task']['next_execution_time']);
        }
        $task['Task']['scheduled_time'] = $this->breakTime($task['Task']['scheduled_time'], $task['Task']['timer']);
        $task['Task']['scheduled_time'] = date('H:i', $task['Task']['next_execution_time']);

        // Now that we have figured out when the next execution should happen, it's time to enqueue it.
        $process_id = CakeResque::enqueueAt(
                $task['Task']['next_execution_time'],
                $worker,
                $shell,
                array($action, $task['Task']['next_execution_time'],$userId, $taskId),
                true
        );
        $task['Task']['process_id'] = $process_id;
        $this->id = $task['Task']['id'];
        $this->save($task);
    }
}