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<?php
namespace Kanboard\Model;
use Kanboard\Event\TaskLinkEvent;
/**
* TaskLink model
*
* @package model
* @author Olivier Maridat
* @author Frederic Guillot
*/
class TaskLink extends Base
{
/**
* SQL table name
*
* @var string
*/
const TABLE = 'task_has_links';
/**
* Events
*
* @var string
*/
const EVENT_CREATE_UPDATE = 'tasklink.create_update';
/**
* Get a task link
*
* @access public
* @param integer $task_link_id Task link id
* @return array
*/
public function getById($task_link_id)
{
return $this->db->table(self::TABLE)->eq('id', $task_link_id)->findOne();
}
/**
* Get the opposite task link (use the unique index task_has_links_unique)
*
* @access public
* @param array $task_link
* @return array
*/
public function getOppositeTaskLink(array $task_link)
{
$opposite_link_id = $this->link->getOppositeLinkId($task_link['link_id']);
return $this->db->table(self::TABLE)
->eq('opposite_task_id', $task_link['task_id'])
->eq('task_id', $task_link['opposite_task_id'])
->eq('link_id', $opposite_link_id)
->findOne();
}
/**
* Get all links attached to a task
*
* @access public
* @param integer $task_id Task id
* @return array
*/
public function getAll($task_id)
{
return $this->db
->table(self::TABLE)
->columns(
self::TABLE.'.id',
self::TABLE.'.opposite_task_id AS task_id',
Link::TABLE.'.label',
Task::TABLE.'.title',
Task::TABLE.'.is_active',
Task::TABLE.'.project_id',
Task::TABLE.'.column_id',
Task::TABLE.'.time_spent AS task_time_spent',
Task::TABLE.'.time_estimated AS task_time_estimated',
Task::TABLE.'.owner_id AS task_assignee_id',
User::TABLE.'.username AS task_assignee_username',
User::TABLE.'.name AS task_assignee_name',
Board::TABLE.'.title AS column_title',
Project::TABLE.'.name AS project_name'
)
->eq(self::TABLE.'.task_id', $task_id)
->join(Link::TABLE, 'id', 'link_id')
->join(Task::TABLE, 'id', 'opposite_task_id')
->join(Board::TABLE, 'id', 'column_id', Task::TABLE)
->join(User::TABLE, 'id', 'owner_id', Task::TABLE)
->join(Project::TABLE, 'id', 'project_id', Task::TABLE)
->asc(Link::TABLE.'.id')
->desc(Board::TABLE.'.position')
->desc(Task::TABLE.'.is_active')
->asc(Task::TABLE.'.position')
->asc(Task::TABLE.'.id')
->findAll();
}
/**
* Get all links attached to a task grouped by label
*
* @access public
* @param integer $task_id Task id
* @return array
*/
public function getAllGroupedByLabel($task_id)
{
$links = $this->getAll($task_id);
$result = array();
foreach ($links as $link) {
if (! isset($result[$link['label']])) {
$result[$link['label']] = array();
}
$result[$link['label']][] = $link;
}
return $result;
}
/**
* Publish events
*
* @access private
* @param array $events
*/
private function fireEvents(array $events)
{
foreach ($events as $event) {
$event['project_id'] = $this->taskFinder->getProjectId($event['task_id']);
$this->container['dispatcher']->dispatch(self::EVENT_CREATE_UPDATE, new TaskLinkEvent($event));
}
}
/**
* Create a new link
*
* @access public
* @param integer $task_id Task id
* @param integer $opposite_task_id Opposite task id
* @param integer $link_id Link id
* @return integer Task link id
*/
public function create($task_id, $opposite_task_id, $link_id)
{
$events = array();
$this->db->startTransaction();
// Get opposite link
$opposite_link_id = $this->link->getOppositeLinkId($link_id);
$values = array(
'task_id' => $task_id,
'opposite_task_id' => $opposite_task_id,
'link_id' => $link_id,
);
// Create the original task link
$this->db->table(self::TABLE)->insert($values);
$task_link_id = $this->db->getLastId();
$events[] = $values;
// Create the opposite task link
$values = array(
'task_id' => $opposite_task_id,
'opposite_task_id' => $task_id,
'link_id' => $opposite_link_id,
);
$this->db->table(self::TABLE)->insert($values);
$events[] = $values;
$this->db->closeTransaction();
$this->fireEvents($events);
return (int) $task_link_id;
}
/**
* Update a task link
*
* @access public
* @param integer $task_link_id Task link id
* @param integer $task_id Task id
* @param integer $opposite_task_id Opposite task id
* @param integer $link_id Link id
* @return boolean
*/
public function update($task_link_id, $task_id, $opposite_task_id, $link_id)
{
$events = array();
$this->db->startTransaction();
// Get original task link
$task_link = $this->getById($task_link_id);
// Find opposite task link
$opposite_task_link = $this->getOppositeTaskLink($task_link);
// Get opposite link
$opposite_link_id = $this->link->getOppositeLinkId($link_id);
// Update the original task link
$values = array(
'task_id' => $task_id,
'opposite_task_id' => $opposite_task_id,
'link_id' => $link_id,
);
$rs1 = $this->db->table(self::TABLE)->eq('id', $task_link_id)->update($values);
$events[] = $values;
// Update the opposite link
$values = array(
'task_id' => $opposite_task_id,
'opposite_task_id' => $task_id,
'link_id' => $opposite_link_id,
);
$rs2 = $this->db->table(self::TABLE)->eq('id', $opposite_task_link['id'])->update($values);
$events[] = $values;
$this->db->closeTransaction();
if ($rs1 && $rs2) {
$this->fireEvents($events);
return true;
}
return false;
}
/**
* Remove a link between two tasks
*
* @access public
* @param integer $task_link_id
* @return boolean
*/
public function remove($task_link_id)
{
$this->db->startTransaction();
$link = $this->getById($task_link_id);
$link_id = $this->link->getOppositeLinkId($link['link_id']);
$this->db->table(self::TABLE)->eq('id', $task_link_id)->remove();
$this->db
->table(self::TABLE)
->eq('opposite_task_id', $link['task_id'])
->eq('task_id', $link['opposite_task_id'])
->eq('link_id', $link_id)->remove();
$this->db->closeTransaction();
return true;
}
}
|
