<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Integrations\Media;

use Brain\Monkey\Functions;
use LIT\MCP\Integrations\Media\MediaGuard;
use LIT\MCP\Tests\Unit\TestCase;
use WP_Post;

final class MediaGuardTest extends TestCase
{
    public function testInvalidIdIsAValidationError(): void
    {
        self::assertToolError(MediaGuard::attachment('abc'), 'validation_failed');
        self::assertToolError(MediaGuard::attachment(0), 'validation_failed');
    }

    public function testMissingOrNonAttachmentIsNotFound(): void
    {
        Functions\when('get_post')->justReturn(null);
        self::assertToolError(MediaGuard::attachment(33), 'not_found');

        Functions\when('get_post')->justReturn(new WP_Post(['ID' => 33, 'post_type' => 'page']));
        self::assertToolError(MediaGuard::attachment(33), 'not_found');
    }

    public function testChecksTheRequestedCapabilityOnTheAttachment(): void
    {
        $attachment = new WP_Post(['ID' => 33, 'post_type' => 'attachment', 'post_status' => 'inherit']);
        Functions\when('get_post')->justReturn($attachment);
        Functions\expect('current_user_can')->once()->with('delete_post', 33)->andReturn(false);

        self::assertToolError(MediaGuard::attachment('33', 'delete_post'), 'forbidden');
    }

    public function testRefusesTrashedAttachmentsUnlessAllowed(): void
    {
        $attachment = new WP_Post(['ID' => 33, 'post_type' => 'attachment', 'post_status' => 'trash']);
        Functions\when('get_post')->justReturn($attachment);
        Functions\when('current_user_can')->justReturn(true);

        $error = MediaGuard::attachment(33);
        self::assertToolError($error, 'validation_failed');
        self::assertStringContainsString('Papierkorb', $error->get_error_message());
        self::assertSame($attachment, MediaGuard::attachment(33, 'read_post', true));
    }
}