<?php

declare(strict_types=1);

namespace App\Tests\Controller\Administrative\System\Document;

use App\Config\SeasonTask;
use App\Entity\SeasonTaskDocument;
use App\Entity\Upload;
use App\Entity\User;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Bundle\FrameworkBundle\KernelBrowser;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
use Symfony\Component\HttpFoundation\Response;

/**
 * A library document handed out for a season task is held by a NOT NULL foreign key. Deleting it
 * used to end in a 500 that htmx swallowed, so the modal just stayed open; it now has to be
 * refused before it reaches the database.
 */
class DeleteControllerTest extends WebTestCase
{
    private const LIST_URL = '/administrative/system/document';

    private KernelBrowser $client;

    private EntityManagerInterface $entityManager;

    protected function setUp(): void
    {
        $this->client = static::createClient(server: ['HTTPS' => true]);
        $this->entityManager = self::getContainer()->get(EntityManagerInterface::class);

        $this->entityManager->createQuery(sprintf('DELETE FROM %s', SeasonTaskDocument::class))->execute();
        $this->entityManager->createQuery(sprintf('DELETE FROM %s', Upload::class))->execute();
        $this->entityManager->createQuery(sprintf('DELETE FROM %s', User::class))->execute();

        $this->client->loginUser($this->administrative());
    }

    /**
     * The mapping holds a foreign key on upload; left behind, it breaks every later test that
     * clears the upload table.
     */
    protected function tearDown(): void
    {
        $this->entityManager->createQuery(sprintf('DELETE FROM %s', SeasonTaskDocument::class))->execute();

        parent::tearDown();
    }

    public function testTheModalOffersNoConfirmationForAnAssignedDocument(): void
    {
        $document = $this->assigned($this->document('Vertrag.pdf'), SeasonTask::CONTRACT);

        $crawler = $this->client->request('GET', $this->deleteUrl($document));

        $this->assertSame(Response::HTTP_OK, $this->client->getResponse()->getStatusCode());
        $this->assertStringContainsString('kann deshalb nicht gelöscht werden', $crawler->text());
        $this->assertStringContainsString('Vertrag', $crawler->text());
        $this->assertCount(0, $crawler->filter('button[hx-post]'));
    }

    public function testDeletingAnAssignedDocumentIsRefused(): void
    {
        $document = $this->assigned($this->document('Vertrag.pdf'), SeasonTask::CONTRACT);
        $id = $document->getId();

        $this->client->request('POST', $this->deleteUrl($document));

        $this->assertSame(Response::HTTP_OK, $this->client->getResponse()->getStatusCode());
        $this->assertSame(self::LIST_URL, $this->client->getResponse()->headers->get('HX-Redirect'));

        $this->entityManager->clear();
        $this->assertNotNull($this->entityManager->find(Upload::class, $id));
    }

    /**
     * A row whose task key no longer resolves still holds the foreign key.
     */
    public function testAnAssignmentToARemovedTaskStillBlocksDeletion(): void
    {
        $document = $this->document('Alt.pdf');
        $this->entityManager->persist((new SeasonTaskDocument())->setTaskKey('removed_task')->setDocument($document));
        $this->entityManager->flush();
        $id = $document->getId();

        $this->client->request('POST', $this->deleteUrl($document));

        // Refused by the guard, not by the database: that would be the 500.
        $this->assertSame(self::LIST_URL, $this->client->getResponse()->headers->get('HX-Redirect'));

        $this->entityManager->clear();
        $this->assertNotNull($this->entityManager->find(Upload::class, $id));
    }

    public function testAnUnassignedDocumentIsDeleted(): void
    {
        $document = $this->document('Handbuch.pdf');
        $id = $document->getId();

        $crawler = $this->client->request('GET', $this->deleteUrl($document));
        $this->assertCount(1, $crawler->filter('button[hx-post]'));

        $this->client->request('POST', $this->deleteUrl($document));

        $this->assertSame(self::LIST_URL, $this->client->getResponse()->headers->get('HX-Redirect'));

        $this->entityManager->clear();
        $this->assertNull($this->entityManager->find(Upload::class, $id));
    }

    public function testTheListMarksAnAssignedDocumentAndOffersNoDelete(): void
    {
        $assigned = $this->assigned($this->document('Vertrag.pdf'), SeasonTask::CONTRACT);
        $free = $this->document('Handbuch.pdf');

        $crawler = $this->client->request('GET', self::LIST_URL);

        $this->assertSame(Response::HTTP_OK, $this->client->getResponse()->getStatusCode());
        $this->assertStringContainsString('Saisonteam: Vertrag', $crawler->text());
        $this->assertCount(0, $crawler->filter(sprintf('button[hx-get="%s"]', $this->deleteUrl($assigned))));
        $this->assertCount(1, $crawler->filter(sprintf('button[hx-get="%s"]', $this->deleteUrl($free))));
    }

    private function deleteUrl(Upload $document): string
    {
        return sprintf('/administrative/system/document/delete/%s', $document->getUuid());
    }

    private function assigned(Upload $document, SeasonTask $task): Upload
    {
        $this->entityManager->persist((new SeasonTaskDocument())->setTaskKey($task->value)->setDocument($document));
        $this->entityManager->flush();

        return $document;
    }

    private function document(string $filename): Upload
    {
        // No file on disk: neither the guard nor the list reads it, and deleting a missing file
        // is a no-op for UploadHandler::removeUploadedFile().
        $upload = (new Upload())
            ->setType(Upload::TYPE_DOCUMENT)
            ->setFilename(sprintf('test-%s-%s', bin2hex(random_bytes(4)), $filename))
            ->setOriginalFilename($filename)
            ->setMimeType('application/pdf')
            ->setSize(1024)
        ;

        $this->entityManager->persist($upload);
        $this->entityManager->flush();

        return $upload;
    }

    private function administrative(): User
    {
        $user = (new User())
            ->setFirstName('Anna')
            ->setLastName('Administrative')
            ->setEmail('anna.administrative@example.com')
            ->setRoles(['ROLE_ADMINISTRATIVE'])
            ->setBusProAddressId(1)
            ->setBusProPersonId(1)
        ;

        $this->entityManager->persist($user);
        $this->entityManager->flush();

        return $user;
    }
}