<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Admin;

use Brain\Monkey\Functions;
use LIT\MCP\Admin\LimitsTab;
use LIT\MCP\Limits;
use LIT\MCP\Tests\Unit\TestCase;
use Mockery;

final class LimitsTabTest extends TestCase
{
    public function testRegistersTheLimitsOption(): void
    {
        Functions\expect('register_setting')->once()->with(
            'lit_mcp_limits',
            'lit_mcp_limits',
            Mockery::on(static fn (array $args): bool => $args['sanitize_callback'] === [Limits::class, 'sanitize']
                && $args['default'] === Limits::DEFAULTS)
        );

        (new LimitsTab())->registerSettings();
    }

    public function testRendersThreeNumberFieldsWithCurrentValues(): void
    {
        Functions\stubEscapeFunctions();
        Functions\stubTranslationFunctions();
        Functions\when('settings_fields')->justReturn(null);
        Functions\when('submit_button')->justReturn(null);
        Functions\when('get_option')->justReturn(['upload_mb' => 8]);
        Functions\when('wp_max_upload_size')->justReturn(64 * 1024 * 1024);

        ob_start();
        (new LimitsTab())->render();
        $html = (string) ob_get_clean();

        self::assertSame(3, substr_count($html, 'type="number"'));
        self::assertStringContainsString('name="lit_mcp_limits[upload_mb]" value="8"', $html);
        self::assertStringContainsString('name="lit_mcp_limits[log_retention_days]" value="90"', $html);
        self::assertStringContainsString('min="1" max="32"', $html);
        self::assertStringContainsString('höchstens 32', $html);
        self::assertStringContainsString('10 MB', $html);
        self::assertStringContainsString('min="1" max="3650"', $html);
    }

    public function testWarnsWhenUploadMbExceedsTheServersOwnUploadLimit(): void
    {
        Functions\stubEscapeFunctions();
        Functions\stubTranslationFunctions();
        Functions\when('settings_fields')->justReturn(null);
        Functions\when('submit_button')->justReturn(null);
        Functions\when('get_option')->justReturn(['upload_mb' => 20]);
        Functions\when('wp_max_upload_size')->justReturn(2 * 1024 * 1024);

        ob_start();
        (new LimitsTab())->render();
        $html = (string) ob_get_clean();

        self::assertStringContainsString('class="description"', $html);
        self::assertMatchesRegularExpression('/20 MB.*2 MB/s', $html);
    }

    public function testNoWarningWhenUploadMbIsWithinTheServersOwnUploadLimit(): void
    {
        Functions\stubEscapeFunctions();
        Functions\stubTranslationFunctions();
        Functions\when('settings_fields')->justReturn(null);
        Functions\when('submit_button')->justReturn(null);
        Functions\when('get_option')->justReturn(['upload_mb' => 5]);
        Functions\when('wp_max_upload_size')->justReturn(64 * 1024 * 1024);

        ob_start();
        (new LimitsTab())->render();
        $html = (string) ob_get_clean();

        self::assertStringNotContainsString('class="description"', $html);
    }
}