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<?php
namespace Kanboard\Model;
use Kanboard\Event\TaskEvent;
/**
* Task Position
*
* @package model
* @author Frederic Guillot
*/
class TaskPosition extends Base
{
/**
* Move a task to another column or to another position
*
* @access public
* @param integer $project_id Project id
* @param integer $task_id Task id
* @param integer $column_id Column id
* @param integer $position Position (must be >= 1)
* @param integer $swimlane_id Swimlane id
* @param boolean $fire_events Fire events
* @return boolean
*/
public function movePosition($project_id, $task_id, $column_id, $position, $swimlane_id = 0, $fire_events = true)
{
if ($position < 1) {
return false;
}
$task = $this->taskFinder->getById($task_id);
if ($task['is_active'] == Task::STATUS_CLOSED) {
return true;
}
$result = false;
if ($task['swimlane_id'] != $swimlane_id) {
$result = $this->saveSwimlaneChange($project_id, $task_id, $position, $task['column_id'], $column_id, $task['swimlane_id'], $swimlane_id);
} elseif ($task['column_id'] != $column_id) {
$result = $this->saveColumnChange($project_id, $task_id, $position, $swimlane_id, $task['column_id'], $column_id);
} elseif ($task['position'] != $position) {
$result = $this->savePositionChange($project_id, $task_id, $position, $column_id, $swimlane_id);
}
if ($result && $fire_events) {
$this->fireEvents($task, $column_id, $position, $swimlane_id);
}
return $result;
}
/**
* Move a task to another swimlane
*
* @access private
* @param integer $project_id
* @param integer $task_id
* @param integer $position
* @param integer $original_column_id
* @param integer $new_column_id
* @param integer $original_swimlane_id
* @param integer $new_swimlane_id
* @return boolean
*/
private function saveSwimlaneChange($project_id, $task_id, $position, $original_column_id, $new_column_id, $original_swimlane_id, $new_swimlane_id)
{
$this->db->startTransaction();
$r1 = $this->saveTaskPositions($project_id, $task_id, 0, $original_column_id, $original_swimlane_id);
$r2 = $this->saveTaskPositions($project_id, $task_id, $position, $new_column_id, $new_swimlane_id);
$this->db->closeTransaction();
return $r1 && $r2;
}
/**
* Move a task to another column
*
* @access private
* @param integer $project_id
* @param integer $task_id
* @param integer $position
* @param integer $swimlane_id
* @param integer $original_column_id
* @param integer $new_column_id
* @return boolean
*/
private function saveColumnChange($project_id, $task_id, $position, $swimlane_id, $original_column_id, $new_column_id)
{
$this->db->startTransaction();
$r1 = $this->saveTaskPositions($project_id, $task_id, 0, $original_column_id, $swimlane_id);
$r2 = $this->saveTaskPositions($project_id, $task_id, $position, $new_column_id, $swimlane_id);
$this->db->closeTransaction();
return $r1 && $r2;
}
/**
* Move a task to another position in the same column
*
* @access private
* @param integer $project_id
* @param integer $task_id
* @param integer $position
* @param integer $column_id
* @param integer $swimlane_id
* @return boolean
*/
private function savePositionChange($project_id, $task_id, $position, $column_id, $swimlane_id)
{
$this->db->startTransaction();
$result = $this->saveTaskPositions($project_id, $task_id, $position, $column_id, $swimlane_id);
$this->db->closeTransaction();
return $result;
}
/**
* Save all task positions for one column
*
* @access private
* @param integer $project_id
* @param integer $task_id
* @param integer $position
* @param integer $column_id
* @param integer $swimlane_id
* @return boolean
*/
private function saveTaskPositions($project_id, $task_id, $position, $column_id, $swimlane_id)
{
$tasks_ids = $this->db->table(Task::TABLE)
->eq('is_active', 1)
->eq('swimlane_id', $swimlane_id)
->eq('project_id', $project_id)
->eq('column_id', $column_id)
->neq('id', $task_id)
->asc('position')
->asc('id')
->findAllByColumn('id');
$offset = 1;
foreach ($tasks_ids as $current_task_id) {
// Insert the new task
if ($position == $offset) {
if (! $this->saveTaskPosition($task_id, $offset, $column_id, $swimlane_id)) {
return false;
}
$offset++;
}
// Rewrite other tasks position
if (! $this->saveTaskPosition($current_task_id, $offset, $column_id, $swimlane_id)) {
return false;
}
$offset++;
}
// Insert the new task at the bottom and normalize bad position
if ($position >= $offset && ! $this->saveTaskPosition($task_id, $offset, $column_id, $swimlane_id)) {
return false;
}
$now = time();
return $this->db->table(Task::TABLE)->eq('id', $task_id)->update(array(
'date_moved' => $now,
'date_modification' => $now,
));
}
/**
* Save new task position
*
* @access private
* @param integer $task_id
* @param integer $position
* @param integer $column_id
* @param integer $swimlane_id
* @return boolean
*/
private function saveTaskPosition($task_id, $position, $column_id, $swimlane_id)
{
$result = $this->db->table(Task::TABLE)->eq('id', $task_id)->update(array(
'position' => $position,
'column_id' => $column_id,
'swimlane_id' => $swimlane_id,
));
if (! $result) {
$this->db->cancelTransaction();
return false;
}
return true;
}
/**
* Fire events
*
* @access private
* @param array $task
* @param integer $new_column_id
* @param integer $new_position
* @param integer $new_swimlane_id
*/
private function fireEvents(array $task, $new_column_id, $new_position, $new_swimlane_id)
{
$event_data = array(
'task_id' => $task['id'],
'project_id' => $task['project_id'],
'position' => $new_position,
'column_id' => $new_column_id,
'swimlane_id' => $new_swimlane_id,
'src_column_id' => $task['column_id'],
'dst_column_id' => $new_column_id,
'date_moved' => $task['date_moved'],
'recurrence_status' => $task['recurrence_status'],
'recurrence_trigger' => $task['recurrence_trigger'],
);
if ($task['swimlane_id'] != $new_swimlane_id) {
$this->logger->debug('Event fired: '.Task::EVENT_MOVE_SWIMLANE);
$this->dispatcher->dispatch(Task::EVENT_MOVE_SWIMLANE, new TaskEvent($event_data));
} elseif ($task['column_id'] != $new_column_id) {
$this->logger->debug('Event fired: '.Task::EVENT_MOVE_COLUMN);
$this->dispatcher->dispatch(Task::EVENT_MOVE_COLUMN, new TaskEvent($event_data));
} elseif ($task['position'] != $new_position) {
$this->logger->debug('Event fired: '.Task::EVENT_MOVE_POSITION);
$this->dispatcher->dispatch(Task::EVENT_MOVE_POSITION, new TaskEvent($event_data));
}
}
}
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