<?php

namespace App\Service;

use App\DTO\Request\CreateTaskRequest;
use App\DTO\Request\UpdateTaskRequest;
use App\Entity\Task;
use App\Enum\TaskStatus;
use App\Repository\CategoryRepository;
use Doctrine\ORM\EntityManagerInterface;

class TaskManager
{
    public function __construct(
        private EntityManagerInterface $em,
        private CategoryRepository $categoryRepository,
    ) {}

    public function createTask(CreateTaskRequest $request): Task
    {
        $task = new Task();
        $task->setName($request->name);

        if ($request->categoryId !== null) {
            $category = $this->categoryRepository->find($request->categoryId);
            $task->setCategory($category);
        }

        if ($request->date !== null) {
            $task->setDate(new \DateTime($request->date));
        }

        $this->em->persist($task);
        $this->em->flush();

        return $task;
    }

    public function updateTask(Task $task, UpdateTaskRequest $request): Task
    {
        $task->setName($request->name);

        $category = $request->categoryId !== null
            ? $this->categoryRepository->find($request->categoryId)
            : null;
        $task->setCategory($category);

        $status = TaskStatus::tryFrom($request->status);
        if ($status !== null) {
            $task->setStatus($status);
        }

        $task->setDate($request->date ? new \DateTime($request->date) : null);

        $this->em->flush();

        return $task;
    }

    public function toggleTask(Task $task): Task
    {
        $newStatus = $task->getStatus() === TaskStatus::Active
            ? TaskStatus::Done
            : TaskStatus::Active;
        $task->setStatus($newStatus);
        $this->em->flush();

        return $task;
    }

    public function deleteTask(Task $task): void
    {
        $this->em->remove($task);
        $this->em->flush();
    }
}