<?php

namespace App\Tests\Command;

use App\Command\BackupCommand;
use App\Entity\Backup;
use App\Service\Mailer\Mailer;
use App\Service\System\DatabaseDumper;
use App\Service\System\ZipArchiver;
use Doctrine\ORM\EntityManagerInterface;
use Doctrine\ORM\Query;
use PHPUnit\Framework\MockObject\MockObject;
use PHPUnit\Framework\TestCase;
use Symfony\Component\Console\Application;
use Symfony\Component\Console\Tester\CommandTester;
use Symfony\Component\HttpKernel\KernelInterface;

class BackupCommandTest extends TestCase
{
    private MockObject&KernelInterface $kernel;
    private MockObject&EntityManagerInterface $entityManager;
    private MockObject&Mailer $mailer;
    private MockObject&DatabaseDumper $databaseDumper;
    private MockObject&ZipArchiver $zipArchiver;

    protected function setUp(): void
    {
        $this->kernel = $this->createMock(KernelInterface::class);
        $this->entityManager = $this->createMock(EntityManagerInterface::class);
        $this->mailer = $this->createMock(Mailer::class);
        $this->databaseDumper = $this->createMock(DatabaseDumper::class);
        $this->zipArchiver = $this->createMock(ZipArchiver::class);
    }

    public function testExecuteSuccess()
    {
        // 1. Setup Data
        $projectDir = sys_get_temp_dir() . '/backup_test_' . uniqid();
        mkdir($projectDir . '/sauvegarde', 0777, true);
        
        $this->kernel->method('getProjectDir')->willReturn($projectDir);

        // 2. Expectations
        
        // EntityManager
        $this->entityManager->expects($this->once())->method('persist')->with($this->isInstanceOf(Backup::class));
        $this->entityManager->expects($this->atLeast(2))->method('flush'); // Once at start, once at end

        // Cleanup expectations
        // Mocking Query class which might be final. If so, we'll see an error.
        // But commonly in Doctrine mocks, we have to deal with this.
        $query = $this->createMock(Query::class);
        $query->method('setParameter')->willReturnSelf();
        $query->method('execute');
        $this->entityManager->method('createQuery')->willReturn($query);

        // Database Dumper
        $this->databaseDumper->expects($this->once())
            ->method('dump')
            ->with($this->anything(), $this->stringEndsWith('temp_db.sql'));

        // Zip Archiver
        $this->zipArchiver->expects($this->once())
            ->method('createArchive')
            ->willReturnCallback(function($zipPath, $sqlPath, $dirs) {
                // Create a dummy zip file so filesize() works
                touch($zipPath);
            });

        // Mailer
        $this->mailer->expects($this->once())
            ->method('send')
            ->with(
                'notification@siteconseil.fr',
                'Intranet Ludievent',
                $this->stringContains('✅ Sauvegarde'),
                'mails/backup_notification.twig',
                $this->callback(function($context) {
                    return isset($context['backup']) && $context['backup']->getStatus() === 'SUCCESS';
                })
            );

        // 3. Execution
        $command = new BackupCommand(
            $this->kernel,
            $this->entityManager,
            $this->mailer,
            $this->databaseDumper,
            $this->zipArchiver
        );

        $application = new Application();
        $application->add($command);
        $commandTester = new CommandTester($application->find('app:backup'));

        $commandTester->execute([]);

        // 4. Assertions
        $output = $commandTester->getDisplay();
        $this->assertStringContainsString('Sauvegarde réussie', $output);

        // Cleanup
        $this->removeDirectory($projectDir);
    }

    public function testExecuteFailure()
    {
        // 1. Setup Data
        $projectDir = sys_get_temp_dir() . '/backup_test_fail_' . uniqid();
        mkdir($projectDir . '/sauvegarde', 0777, true);
        
        $this->kernel->method('getProjectDir')->willReturn($projectDir);

        // 2. Expectations - Fail at Dump
        $this->databaseDumper->expects($this->once())
            ->method('dump')
            ->willThrowException(new \Exception("Simulated Dump Error"));

        // Mailer - Should send Error notification
        $this->mailer->expects($this->once())
            ->method('send')
            ->with(
                'notification@siteconseil.fr',
                'Intranet Ludievent',
                $this->stringContains('❌ Sauvegarde'),
                'mails/backup_notification.twig',
                $this->callback(function($context) {
                    return isset($context['backup']) 
                        && $context['backup']->getStatus() === 'ERROR'
                        && $context['backup']->getErrorMessage() === 'Simulated Dump Error';
                })
            );

        // Cleanup expectations
        $query = $this->createMock(Query::class);
        $query->method('setParameter')->willReturnSelf();
        $query->method('execute');
        $this->entityManager->method('createQuery')->willReturn($query);

        // 3. Execution
        $command = new BackupCommand(
            $this->kernel,
            $this->entityManager,
            $this->mailer,
            $this->databaseDumper,
            $this->zipArchiver
        );

        $application = new Application();
        $application->add($command);
        $commandTester = new CommandTester($application->find('app:backup'));

        $commandTester->execute([]);

        // 4. Assertions
        $output = $commandTester->getDisplay();
        $this->assertStringContainsString('Échec : Simulated Dump Error', $output);

        // Cleanup
        $this->removeDirectory($projectDir);
    }

    private function removeDirectory($dir) {
        if (!is_dir($dir)) return;
        $files = array_diff(scandir($dir), array('.','..'));
        foreach ($files as $file) {
            (is_dir("$dir/$file")) ? $this->removeDirectory("$dir/$file") : unlink("$dir/$file");
        }
        rmdir($dir);
    }
}