<?php

namespace MintyPHP\Tests\Unit\Module;

use MintyPHP\App\AppContainer;
use MintyPHP\App\Module\Contracts\LayoutContextProvider;
use MintyPHP\App\Module\ModuleRegistry;
use MintyPHP\Tests\Support\AppContainerIsolationTrait;
use PHPUnit\Framework\TestCase;

final class LayoutNavProviderGuardTest extends TestCase
{
    use AppContainerIsolationTrait;

    private string $fixturesDir = '';

    protected function setUp(): void
    {
        $this->fixturesDir = sys_get_temp_dir() . '/layout-provider-guard-' . uniqid();
        mkdir($this->fixturesDir, 0777, true);
    }

    protected function tearDown(): void
    {
        $this->removeDir($this->fixturesDir);
        $this->restoreAppContainer();
    }

    public function testReservedLayoutKeyIsRejected(): void
    {
        $registry = $this->createRegistryWithProvider(DummyReservedLayoutProvider::class);
        $container = new AppContainer();
        $container->set(ModuleRegistry::class, static fn (): ModuleRegistry => $registry);
        $this->pushAppContainer($container);

        $this->expectException(\RuntimeException::class);
        $this->expectExceptionMessage("must not override reserved layout key 'moduleSlots'");

        appBuildLayoutNavContext([], [], []);
    }

    public function testNamespacedLayoutProviderKeyIsAccepted(): void
    {
        $registry = $this->createRegistryWithProvider(DummyNamespacedLayoutProvider::class);
        $container = new AppContainer();
        $container->set(ModuleRegistry::class, static fn (): ModuleRegistry => $registry);
        $this->pushAppContainer($container);

        $layoutNav = appBuildLayoutNavContext([], [], []);

        self::assertSame('ok', $layoutNav['dummy.value'] ?? null);
    }

    private function createRegistryWithProvider(string $providerClass): ModuleRegistry
    {
        $moduleDir = $this->fixturesDir . '/dummy-module';
        mkdir($moduleDir, 0777, true);
        file_put_contents(
            $moduleDir . '/module.php',
            '<?php return ' . var_export([
                'id' => 'dummy-module',
                'layout_context_providers' => [$providerClass],
            ], true) . ';'
        );

        return ModuleRegistry::boot($this->fixturesDir, ['dummy-module']);
    }

    private function removeDir(string $dir): void
    {
        if (!is_dir($dir)) {
            return;
        }

        $items = new \RecursiveIteratorIterator(
            new \RecursiveDirectoryIterator($dir, \FilesystemIterator::SKIP_DOTS),
            \RecursiveIteratorIterator::CHILD_FIRST
        );

        foreach ($items as $item) {
            if ($item->isDir()) {
                rmdir($item->getPathname());
            } else {
                unlink($item->getPathname());
            }
        }

        rmdir($dir);
    }
}

final class DummyReservedLayoutProvider implements LayoutContextProvider
{
    public function provide(array $session, AppContainer $container): array
    {
        return [
            'moduleSlots' => ['bad' => true],
        ];
    }
}

final class DummyNamespacedLayoutProvider implements LayoutContextProvider
{
    public function provide(array $session, AppContainer $container): array
    {
        return [
            'dummy.value' => 'ok',
        ];
    }
}