<?php

declare(strict_types=1);

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

use Brain\Monkey\Functions;
use LIT\MCP\Integrations\WordPress\PostGuard;
use LIT\MCP\Integrations\WordPress\Schema\ContentSchema;
use LIT\MCP\Tests\Unit\TestCase;
use Mockery;
use WP_Post;

final class PostGuardTest extends TestCase
{
    private function schema(): ContentSchema
    {
        $schema = Mockery::mock(ContentSchema::class);
        $schema->allows('isManaged')->andReturnUsing(static fn (string $type): bool => in_array($type, ['page', 'post'], true));

        return $schema;
    }

    public function testRejectsInvalidIds(): void
    {
        self::assertSame('lit_validation_failed', PostGuard::editable('abc', $this->schema())->get_error_code());
        self::assertSame('lit_validation_failed', PostGuard::editable(-3, $this->schema())->get_error_code());
    }

    public function testMissingOrUnmanagedPostsAreNotFound(): void
    {
        Functions\when('get_post')->alias(static fn (int $id) => $id === 8 ? new WP_Post(['ID' => 8, 'post_type' => 'et_pb_layout']) : null);

        self::assertSame('lit_not_found', PostGuard::editable(5, $this->schema())->get_error_code());
        self::assertSame('lit_not_found', PostGuard::editable(8, $this->schema())->get_error_code());
    }

    public function testRequiresEditRightsAndReturnsThePost(): void
    {
        $post = new WP_Post(['ID' => 5, 'post_type' => 'page']);
        Functions\when('get_post')->justReturn($post);
        Functions\when('current_user_can')->alias(static fn (string $cap, int $id = 0): bool => $id === 5);

        self::assertSame($post, PostGuard::editable('5', $this->schema()));

        Functions\when('current_user_can')->justReturn(false);
        self::assertSame('lit_forbidden', PostGuard::editable(5, $this->schema())->get_error_code());
    }

    public function testPostTypeChecksAvailabilityAndCapability(): void
    {
        $object = (object) ['cap' => (object) ['create_posts' => 'edit_pages']];
        Functions\when('get_post_type_object')->justReturn($object);
        Functions\when('current_user_can')->alias(static fn (string $cap): bool => $cap === 'edit_pages');

        self::assertSame('lit_not_found', PostGuard::postType('et_pb_layout', $this->schema(), 'create_posts')->get_error_code());
        self::assertSame('lit_not_found', PostGuard::postType(null, $this->schema(), 'create_posts')->get_error_code());
        self::assertSame($object, PostGuard::postType('page', $this->schema(), 'create_posts'));

        Functions\when('current_user_can')->justReturn(false);
        self::assertSame('lit_forbidden', PostGuard::postType('page', $this->schema(), 'create_posts')->get_error_code());
    }
}