<?php

/*
 * This file is part of the TaskManagementBundle for Kimai 2.
 * All rights reserved by Kevin Papst (www.kevinpapst.de).
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace KimaiPlugin\TaskManagementBundle\EventSubscriber;

use App\Constants;
use App\Event\CalendarDragAndDropSourceEvent;
use App\Utils\Color;
use KimaiPlugin\TaskManagementBundle\Calendar\TaskEntry;
use KimaiPlugin\TaskManagementBundle\Calendar\TaskSource;
use KimaiPlugin\TaskManagementBundle\Entity\Task;
use KimaiPlugin\TaskManagementBundle\Repository\TaskRepository;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;

final class CalendarDragAndDropSourceSubscriber implements EventSubscriberInterface
{
    /**
     * @var AuthorizationCheckerInterface
     */
    private $security;
    /**
     * @var TaskRepository
     */
    private $taskRepository;

    public function __construct(AuthorizationCheckerInterface $security, TaskRepository $taskRepository)
    {
        $this->security = $security;
        $this->taskRepository = $taskRepository;
    }

    public static function getSubscribedEvents(): array
    {
        return [
            CalendarDragAndDropSourceEvent::class => ['onDashboardEvent', 100],
        ];
    }

    public function onDashboardEvent(CalendarDragAndDropSourceEvent $event): void
    {
        if (!$this->security->isGranted('task_start')) {
            return;
        }

        $colorHelper = new Color();

        $entries = [];
        $max = $event->getMaxEntries();

        $query = $this->taskRepository->getUserTasksQuery($event->getUser(), $max);
        $tasks = $this->taskRepository->getPagerfantaForQuery($query)->getIterator();

        /** @var Task $task */
        foreach ($tasks as $task) {
            $color = null;

            if ($task->getActivity() !== null) {
                $color = $colorHelper->getColor($task->getActivity());
            }

            if ($color === null && $task->getProject() !== null) {
                $color = $colorHelper->getColor($task->getProject(), true);
            }

            if ($color === null) {
                $color = Constants::DEFAULT_COLOR;
            }

            $entries[] = new TaskEntry($task, $color);
        }

        $source = new TaskSource($entries);

        $event->addSource($source);
    }
}