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<?php
namespace ProcessMaker\AssignmentRules;
use ProcessMaker\Contracts\AssignmentRuleInterface;
use ProcessMaker\Exception\ThereIsNoProcessManagerAssignedException;
use ProcessMaker\Models\Process;
use ProcessMaker\Models\ProcessRequest;
use ProcessMaker\Models\ProcessRequestToken;
use ProcessMaker\Models\User;
use ProcessMaker\Nayra\Contracts\Bpmn\ActivityInterface;
use ProcessMaker\Nayra\Contracts\Bpmn\TokenInterface;
/**
* The task is assigned to the Manager of the Process.
*/
class ProcessManagerAssigned implements AssignmentRuleInterface
{
/**
* The task is assigned to the Manager of the Process.
*
* It takes in count the process version of the request.
* If the process does not have assigned a Manager, it throws an exception.
*
* @param ActivityInterface $task
* @param TokenInterface $token
* @param Process $process
* @param ProcessRequest $request
* @return int|null
* @throws ThereIsNoProcessManagerAssignedException
*/
public function getNextUser(ActivityInterface $task, TokenInterface $token, Process $process, ProcessRequest $request)
{
// review for multiple managers
$managers = $request->processVersion->manager_id;
$user_id = $this->getNextManagerAssigned($managers, $task, $request);
if (!$user_id) {
throw new ThereIsNoProcessManagerAssignedException($task);
}
return $user_id;
}
/**
* Get the round robin manager using a true round robin algorithm
*
* @param array $managers
* @param ActivityInterface $task
* @param ProcessRequest $request
* @return int|null
*/
private function getNextManagerAssigned($managers, $task, $request)
{
// Validate input
if (empty($managers) || !is_array($managers)) {
return null;
}
// If only one manager, return it
if (count($managers) === 1) {
return $managers[0];
}
// get the last manager assigned to the task across all requests
$last = ProcessRequestToken::where('process_id', $request->process_id)
->where('element_id', $task->getId())
->whereIn('user_id', $managers)
->orderBy('created_at', 'desc')
->first();
$user_id = $last ? $last->user_id : null;
sort($managers);
$key = array_search($user_id, $managers);
if ($key === false) {
// If no previous manager found, start with the first manager
$key = 0;
} else {
// Move to the next manager in the round-robin
$key = ($key + 1) % count($managers);
}
$user_id = $managers[$key];
return $user_id;
}
}