<?php

namespace App\Tests\Domain\Scraping\Application\CommandHandler;

use App\Domain\Scraping\Application\Command\ScrapeChapter;
use App\Domain\Scraping\Application\CommandHandler\ScrapeChapterHandler;
use App\Domain\Scraping\Domain\Event\ChapterScrapingFailed;
use App\Domain\Scraping\Domain\Event\ChapterScrapingStarted;
use App\Tests\Domain\Scraping\Adapter\InMemoryEventBus;
use App\Tests\Domain\Scraping\Adapter\InMemoryScraperAdapter;
use App\Tests\Domain\Scraping\Adapter\InMemoryScrapingJobRepository;
use PHPUnit\Framework\TestCase;

class ScrapeChapterHandlerTest extends TestCase
{
    private InMemoryScraperAdapter $scraper;
    private InMemoryScrapingJobRepository $repository;
    private InMemoryEventBus $eventBus;
    private ScrapeChapterHandler $handler;

    protected function setUp(): void
    {
        $this->scraper = new InMemoryScraperAdapter();
        $this->repository = new InMemoryScrapingJobRepository();
        $this->eventBus = new InMemoryEventBus();
        $this->handler = new ScrapeChapterHandler(
            $this->scraper,
            $this->repository,
            $this->eventBus
        );
    }

    public function testHandleSuccessfully(): void
    {
        $command = new ScrapeChapter(
            chapterId: 2,
            sourceId: 3,
            mangaId: 1
        );

        $this->handler->handle($command);

        $scrapingJobs = $this->scraper->getJobs();
        $this->assertCount(1, $scrapingJobs);
        $job = $scrapingJobs[0];

        $savedJobs = $this->repository->getJobs();
        $this->assertCount(1, $savedJobs);
        $this->assertSame($job, $savedJobs[0]);

        $dispatchedMessages = $this->eventBus->getDispatchedMessages();
        $this->assertCount(1, $dispatchedMessages);
        $this->assertInstanceOf(ChapterScrapingStarted::class, $dispatchedMessages[0]);
        $this->assertEquals($job->getId(), $dispatchedMessages[0]->getJobId());
    }

    public function testHandleThrowsException(): void
    {
        $command = new ScrapeChapter(
            chapterId: 2,
            sourceId: 3,
            mangaId: 1
        );

        $exception = new \Exception('Scraping failed');
        $this->scraper->simulateError($exception);

        $this->expectException(\Exception::class);
        $this->expectExceptionMessage('Scraping failed');

        try {
            $this->handler->handle($command);
        } finally {
            $dispatchedMessages = $this->eventBus->getDispatchedMessages();
            $this->assertCount(1, $dispatchedMessages);
            $this->assertInstanceOf(ChapterScrapingFailed::class, $dispatchedMessages[0]);
            $this->assertEquals(2, $dispatchedMessages[0]->getChapterId());
            $this->assertEquals('Scraping failed', $dispatchedMessages[0]->getReason());
        }
    }
}