<?php

namespace App\Tests\Functional;

use App\Entity\User;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Bundle\FrameworkBundle\KernelBrowser;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
use Symfony\Component\PasswordHasher\Hasher\NativePasswordHasher;
use Symfony\Component\PasswordHasher\Hasher\PasswordHasherFactory;
use Symfony\Component\PasswordHasher\Hasher\UserPasswordHasher;

final class ScenarioOwnerApiTest extends WebTestCase
{
    private const EMAIL = 'scenario-owner-api-test@example.com';
    private const PASSWORD = 'correct-horse-battery-staple';

    private const OTHER_EMAIL = 'scenario-owner-api-spoof-target@example.com';

    private KernelBrowser $client;
    private EntityManagerInterface $em;
    private User $caller;
    private User $otherUser;

    protected function setUp(): void
    {
        $this->client = static::createClient();

        /** @var EntityManagerInterface $em */
        $em = static::getContainer()->get(EntityManagerInterface::class);
        $this->em = $em;

        $factory = new PasswordHasherFactory([
            User::class => new NativePasswordHasher(cost: 4),
        ]);
        $hasher = new UserPasswordHasher($factory);

        $this->caller = new User();
        $this->caller->setEmail(self::EMAIL);
        $this->caller->setPassword($hasher->hashPassword($this->caller, self::PASSWORD));
        $this->em->persist($this->caller);

        $this->otherUser = new User();
        $this->otherUser->setEmail(self::OTHER_EMAIL);
        $this->otherUser->setPassword($hasher->hashPassword($this->otherUser, 'some-other-password'));
        $this->em->persist($this->otherUser);

        $this->em->flush();
    }

    private function login(): void
    {
        $this->client->jsonRequest('POST', '/api/login', [
            'username' => self::EMAIL,
            'password' => self::PASSWORD,
        ]);

        self::assertLessThan(
            300,
            $this->client->getResponse()->getStatusCode(),
            'Test setup precondition: login must succeed before exercising the Scenario API.',
        );
    }

    public function testPostCreatesAScenarioOwnedByTheAuthenticatedUser(): void
    {
        $this->login();

        $this->client->request(
            'POST',
            '/api/scenarios',
            server: [
                'CONTENT_TYPE' => 'application/ld+json',
                'HTTP_ACCEPT' => 'application/ld+json',
            ],
            content: json_encode(['name' => 'Holiday Fund']),
        );

        self::assertSame(
            201,
            $this->client->getResponse()->getStatusCode(),
            'POST /api/scenarios with a valid body must return 201 Created.',
        );

        $this->em->clear();

        $persisted = $this->em->getRepository(\App\Entity\Scenario::class)->findOneBy(['name' => 'Holiday Fund']);

        self::assertNotNull($persisted, 'A successful POST /api/scenarios must persist the new Scenario.');
        self::assertNotNull($persisted->getOwner(), 'The persisted Scenario must have an owner set.');
        self::assertTrue(
            $this->caller->getId()->equals($persisted->getOwner()->getId()),
            'The persisted Scenario must be owned by the authenticated caller, not left null or assigned elsewhere.',
        );
    }

    public function testPostIgnoresAClientSuppliedOwner(): void
    {
        $this->login();

        $this->client->request(
            'POST',
            '/api/scenarios',
            server: [
                'CONTENT_TYPE' => 'application/ld+json',
                'HTTP_ACCEPT' => 'application/ld+json',
            ],
            content: json_encode([
                'name' => 'Spoofed Owner Fund',
                'owner' => '/api/users/'.$this->otherUser->getId(),
            ]),
        );

        self::assertSame(
            201,
            $this->client->getResponse()->getStatusCode(),
            'POST /api/scenarios with a valid body must return 201 Created even when a client-supplied owner is present in the payload.',
        );

        $this->em->clear();

        $persisted = $this->em->getRepository(\App\Entity\Scenario::class)->findOneBy(['name' => 'Spoofed Owner Fund']);

        self::assertNotNull($persisted, 'A successful POST /api/scenarios must persist the new Scenario.');
        self::assertNotNull($persisted->getOwner(), 'The persisted Scenario must have an owner set.');
        self::assertTrue(
            $this->caller->getId()->equals($persisted->getOwner()->getId()),
            'A client-supplied owner in the request body must be ignored — the owner must always be the authenticated caller.',
        );
        self::assertFalse(
            $this->otherUser->getId()->equals($persisted->getOwner()->getId()),
            'The spoofed owner IRI in the request body must never be honoured.',
        );
    }

    public function testPostWithMissingNameIsStillRejectedAsUnprocessable(): void
    {
        $this->login();

        $this->client->request(
            'POST',
            '/api/scenarios',
            server: [
                'CONTENT_TYPE' => 'application/ld+json',
                'HTTP_ACCEPT' => 'application/ld+json',
            ],
            content: json_encode([]),
        );

        self::assertSame(
            422,
            $this->client->getResponse()->getStatusCode(),
            'POST /api/scenarios without a name must still return 422 Unprocessable Entity — the owner-setting persist processor must not interfere with existing validation order.',
        );
    }
}