<?php

namespace App\Tests\Entity;

use App\Entity\Bucket;
use App\Entity\Scenario;
use App\Entity\Stream;
use App\Enum\BucketAllocationType;
use App\Enum\BucketType;
use App\Enum\StreamFrequency;
use App\Enum\StreamType;
use App\Tests\Concerns\CreatesUsers;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;

final class StreamPersistenceTest extends KernelTestCase
{
    use CreatesUsers;

    private EntityManagerInterface $em;

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

    public function testItPersistsAStreamLinkedToItsScenarioAndBucket(): void
    {
        $scenario = new Scenario();
        $scenario->setName('Household Budget');
        $scenario->setOwner($this->persistOwner());
        $this->em->persist($scenario);

        $bucket = new Bucket();
        $bucket->setScenario($scenario);
        $bucket->setType(BucketType::NEED);
        $bucket->setName('Rent');
        $bucket->setPriority(1);
        $bucket->setSortOrder(0);
        $bucket->setAllocationType(BucketAllocationType::FIXED_LIMIT);
        $bucket->setAllocationValue(150000);
        $bucket->setStartingAmount(0);
        $bucket->setBufferMultiplier('0.00');
        $this->em->persist($bucket);

        $this->em->flush();

        $scenarioId = $scenario->getId();
        $bucketId = $bucket->getId();

        $stream = new Stream();
        $stream->setScenario($scenario);
        $stream->setBucket($bucket);
        $stream->setName('Paycheck');
        $stream->setAmount(250000);
        $stream->setType(StreamType::INCOME);
        $stream->setFrequency(StreamFrequency::BIWEEKLY);
        $stream->setStartDate(new \DateTimeImmutable('2026-01-01'));
        $stream->setEndDate(new \DateTimeImmutable('2026-12-31'));
        $stream->setIsActive(true);
        $stream->setDescription('Primary employer income.');

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

        $streamId = $stream->getId();

        $this->em->clear();

        $reloaded = $this->em->find(Stream::class, $streamId);

        self::assertNotNull($reloaded, 'Stream must be retrievable from the database after an identity-map clear.');

        self::assertInstanceOf(Scenario::class, $reloaded->getScenario());
        self::assertSame(
            (string) $scenarioId,
            (string) $reloaded->getScenario()->getId(),
            'Reloaded stream must be linked to the same scenario it was persisted with.',
        );

        self::assertInstanceOf(Bucket::class, $reloaded->getBucket());
        self::assertSame(
            (string) $bucketId,
            (string) $reloaded->getBucket()->getId(),
            'Reloaded stream must be linked to the same bucket it was persisted with.',
        );

        self::assertSame('Paycheck', $reloaded->getName());

        self::assertSame(
            250000,
            $reloaded->getAmount(),
            'amount must round-trip as an int (cents), not a string or float.',
        );

        self::assertInstanceOf(
            StreamType::class,
            $reloaded->getType(),
            'type must hydrate as a StreamType enum instance, not a raw string.',
        );
        self::assertSame(StreamType::INCOME, $reloaded->getType());

        self::assertInstanceOf(
            StreamFrequency::class,
            $reloaded->getFrequency(),
            'frequency must hydrate as a StreamFrequency enum instance, not a raw string.',
        );
        self::assertSame(StreamFrequency::BIWEEKLY, $reloaded->getFrequency());

        self::assertInstanceOf(\DateTimeImmutable::class, $reloaded->getStartDate());
        self::assertSame('2026-01-01', $reloaded->getStartDate()->format('Y-m-d'));

        self::assertInstanceOf(\DateTimeImmutable::class, $reloaded->getEndDate());
        self::assertSame('2026-12-31', $reloaded->getEndDate()->format('Y-m-d'));

        self::assertTrue($reloaded->isActive());

        self::assertSame('Primary employer income.', $reloaded->getDescription());
    }

    public function testItPersistsAStreamWithoutABucket(): void
    {
        $scenario = new Scenario();
        $scenario->setName('Household Budget');
        $scenario->setOwner($this->persistOwner());
        $this->em->persist($scenario);
        $this->em->flush();

        $stream = new Stream();
        $stream->setScenario($scenario);
        $stream->setName('Freelance Income');
        $stream->setAmount(50000);
        $stream->setType(StreamType::INCOME);
        $stream->setFrequency(StreamFrequency::MONTHLY);
        $stream->setStartDate(new \DateTimeImmutable('2026-02-01'));

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

        $streamId = $stream->getId();

        $this->em->clear();

        $reloaded = $this->em->find(Stream::class, $streamId);

        self::assertNotNull($reloaded, 'Stream must be retrievable from the database after an identity-map clear.');
        self::assertNull(
            $reloaded->getBucket(),
            'bucket must be nullable — a stream is not required to link to a bucket.',
        );

        self::assertNull(
            $reloaded->getEndDate(),
            'end_date must be nullable when not explicitly set.',
        );

        self::assertTrue(
            $reloaded->isActive(),
            'is_active must default to true when setIsActive() is never called.',
        );
    }
}