<?php

namespace App\Tests\Blog;

use App\Blog\Entity\Blog;
use App\Tests\ApiTestCase;

/**
 * A post's slug is derived from its title, so an edited title silently kills every
 * published link to it — Search Console reported those old URLs as 404s. The detail
 * endpoint therefore resolves any identifier the post has ever been addressed by and
 * always reports the canonical slug, which the public site uses to redirect.
 */
class BlogIdentifierResolutionTest extends ApiTestCase
{
    private function makePublished(string $title): Blog
    {
        $blog = new Blog($this->createUser(['ROLE_ADMIN']), $title, 'متن آزمایشی مقاله برای تست');
        $blog->setStatus(Blog::STATUS_PUBLISHED);
        $this->em->persist($blog);
        $this->em->flush();

        return $blog;
    }

    /** @return array<string, mixed> */
    private function fetch(string $identifier): array
    {
        $this->client->request('GET', '/api/v1/blog/' . rawurlencode($identifier));

        return json_decode($this->client->getResponse()->getContent(), true) ?? [];
    }

    public function testResolvesByCurrentSlug(): void
    {
        $blog = $this->makePublished('راهنمای تشخیص آلرژی دارویی');

        $body = $this->fetch($blog->getSlug());

        $this->assertSame(200, $this->responseCode());
        $this->assertSame($blog->getUuid(), $body['data']['data']['uuid']);
    }

    public function testResolvesByUuid(): void
    {
        $blog = $this->makePublished('راهنمای تشخیص آلرژی دارویی');

        $this->fetch($blog->getUuid());

        $this->assertSame(200, $this->responseCode());
    }

    public function testResolvesByTopicSlug(): void
    {
        $blog = $this->makePublished('راهنمای تشخیص آلرژی دارویی');
        // یکتا به‌ازای هر اجرا: topic_slug ستون unique است و دیتابیس تست بین
        // اجراها پاک نمی‌شود.
        $topicSlug = 'topic-' . substr($blog->getUuid(), 0, 8);
        $blog->setTopicSlug($topicSlug);
        $this->em->flush();

        $body = $this->fetch($topicSlug);

        $this->assertSame(200, $this->responseCode());
        $this->assertSame($blog->getSlug(), $body['data']['data']['slug']);
    }

    public function testOutdatedSlugStillResolvesThroughItsUuidSuffix(): void
    {
        $blog = $this->makePublished('راهنمای تشخیص آلرژی دارویی');
        $uuidPrefix = substr(str_replace('-', '', $blog->getUuid()), 0, 8);

        // The title changed, so the human part of the URL is stale — only the suffix survives.
        $body = $this->fetch('old-latin-title-' . $uuidPrefix);

        $this->assertSame(200, $this->responseCode());
        $this->assertSame($blog->getSlug(), $body['data']['data']['slug']);
        $this->assertNotSame('old-latin-title-' . $uuidPrefix, $body['data']['data']['slug']);
    }

    public function testUnknownIdentifierStays404(): void
    {
        $this->makePublished('راهنمای تشخیص آلرژی دارویی');

        $this->fetch('alamat-tahooe-mokarrar-dar-bimaran-sartani');

        $this->assertSame(404, $this->responseCode());
    }

    public function testNonHexSuffixIsNotTreatedAsUuidPrefix(): void
    {
        $this->makePublished('راهنمای تشخیص آلرژی دارویی');

        $this->fetch('some-old-title-zzzzzzzz');

        $this->assertSame(404, $this->responseCode());
    }

    public function testDraftStaysHiddenEvenThroughFallbackIdentifiers(): void
    {
        $blog = new Blog($this->createUser(['ROLE_ADMIN']), 'پیش‌نویس منتشرنشده', 'متن آزمایشی مقاله برای تست');
        $blog->setTopicSlug('draft-topic-' . bin2hex(random_bytes(4)));
        $this->em->persist($blog);
        $this->em->flush();

        $this->fetch($blog->getTopicSlug());
        $this->assertSame(404, $this->responseCode());

        $this->fetch($blog->getUuid());
        $this->assertSame(404, $this->responseCode());
    }
}