<?php

namespace App\Tests\Entity;

use App\Entity\Scenario;
use App\Enum\DistributionMode;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
use Symfony\Component\Uid\UuidV7;

final class ScenarioPersistenceTest extends KernelTestCase
{
    private EntityManagerInterface $em;

    protected function setUp(): void
    {
        self::bootKernel();
        $this->em = self::getContainer()->get(EntityManagerInterface::class);
    }

    public function testItPersistsAScenarioWithAUuidId(): void
    {
        $scenario = new Scenario();
        $scenario->setName('Household Budget');

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

        $id = $scenario->getId();
        self::assertInstanceOf(UuidV7::class, $id);

        $this->em->clear();

        $reloaded = $this->em->find(Scenario::class, $id);

        self::assertNotNull($reloaded, 'Scenario must be retrievable from the database after an identity-map clear.');
        self::assertInstanceOf(UuidV7::class, $reloaded->getId());
        self::assertSame('Household Budget', $reloaded->getName());
    }

    public function testDistributionModeDefaultsToEvenWhenNotExplicitlySet(): void
    {
        $scenario = new Scenario();
        $scenario->setName('Default Mode Scenario');

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

        $id = $scenario->getId();

        $this->em->clear();

        $reloaded = $this->em->find(Scenario::class, $id);

        self::assertNotNull($reloaded);
        self::assertSame(
            DistributionMode::EVEN,
            $reloaded->getDistributionMode(),
            'distribution_mode must default to EVEN when not explicitly set.',
        );
    }

    public function testItRoundTripsAnExplicitlySetPriorityDistributionMode(): void
    {
        $scenario = new Scenario();
        $scenario->setName('Priority Mode Scenario');
        $scenario->setDistributionMode(DistributionMode::PRIORITY);

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

        $id = $scenario->getId();

        $this->em->clear();

        $reloaded = $this->em->find(Scenario::class, $id);

        self::assertNotNull($reloaded);
        self::assertInstanceOf(
            DistributionMode::class,
            $reloaded->getDistributionMode(),
            'distribution_mode must hydrate as a DistributionMode enum instance, not a raw string.',
        );
        self::assertSame(
            DistributionMode::PRIORITY,
            $reloaded->getDistributionMode(),
            'An explicitly set PRIORITY distribution_mode must survive a flush + clear + reload round-trip.',
        );
    }

    public function testDescriptionRoundTripsWhenSet(): void
    {
        $scenario = new Scenario();
        $scenario->setName('Described Scenario');
        $scenario->setDescription('Covers rent, groceries, and the emergency buffer.');

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

        $id = $scenario->getId();

        $this->em->clear();

        $reloaded = $this->em->find(Scenario::class, $id);

        self::assertNotNull($reloaded);
        self::assertSame('Covers rent, groceries, and the emergency buffer.', $reloaded->getDescription());
    }

    public function testDescriptionIsNullableAndRemainsNullWhenNotSet(): void
    {
        $scenario = new Scenario();
        $scenario->setName('Undescribed Scenario');

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

        $id = $scenario->getId();

        $this->em->clear();

        $reloaded = $this->em->find(Scenario::class, $id);

        self::assertNotNull($reloaded);
        self::assertNull($reloaded->getDescription());
    }
}