<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Admin;

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

final class ConnectionStatusTest extends TestCase
{
    protected function setUp(): void
    {
        parent::setUp();
        Functions\stubTranslationFunctions();
    }

    public function testEndpointCheckExpects401WithBearerChallengeAndCachesIt(): void
    {
        Functions\when('get_transient')->justReturn(false);
        Functions\when('rest_url')->justReturn('https://kunde.de/wp-json/mcp/mcp-oauth-server');
        Functions\expect('wp_remote_post')->once()->with('https://kunde.de/wp-json/mcp/mcp-oauth-server', Mockery::type('array'))
            ->andReturn(['response' => ['code' => 401]]);
        Functions\when('wp_remote_retrieve_response_code')->justReturn(401);
        Functions\when('wp_remote_retrieve_header')->justReturn('Bearer realm="https://kunde.de"');
        Functions\expect('set_transient')->once()
            ->with('lit_mcp_endpoint_check', Mockery::on(static fn (array $value): bool => $value['ok'] === true), 300);

        $result = (new ConnectionStatus(static fn (): bool => true))->endpoint(true);

        self::assertTrue($result['ok']);
    }

    public function testEndpointAnsweringWithoutChallengeIsReported(): void
    {
        Functions\when('get_transient')->justReturn(false);
        Functions\when('rest_url')->justReturn('https://kunde.de/wp-json/mcp/mcp-oauth-server');
        Functions\when('wp_remote_post')->justReturn(['response' => ['code' => 200]]);
        Functions\when('wp_remote_retrieve_response_code')->justReturn(200);
        Functions\when('wp_remote_retrieve_header')->justReturn('');
        Functions\when('set_transient')->justReturn(true);

        $result = (new ConnectionStatus(static fn (): bool => true))->endpoint(true);

        self::assertFalse($result['ok']);
        self::assertStringContainsString('200', $result['message']);
    }

    public function testChecksWithoutFetchingUseOnlyCachedResults(): void
    {
        Functions\when('get_transient')->justReturn(false);
        Functions\expect('wp_remote_post')->never();
        Functions\when('home_url')->justReturn('http://kunde.test');

        $checks = (new ConnectionStatus(static fn (): bool => false))->checks(false);

        $byLabel = array_column($checks, null, 'label');
        self::assertFalse($byLabel['OAuth-Server']['ok']);
        self::assertFalse($byLabel['HTTPS']['ok']);
        self::assertNull($byLabel['OAuth-Discovery']['ok']);
        self::assertNull($byLabel['MCP-Endpunkt']['ok']);
    }

    public function testDiscoveryDetailIsGermanInsteadOfTheLibrarysEnglishLabel(): void
    {
        Functions\when('get_transient')->alias(static fn (string $key) => $key === 'lit_mcp_endpoint_check'
            ? false
            : ['label' => 'MCP OAuth discovery documents', 'status' => 'good']);
        Functions\when('home_url')->justReturn('https://kunde.test');

        $good = array_column((new ConnectionStatus(static fn (): bool => true))->checks(false), null, 'label');
        self::assertTrue($good['OAuth-Discovery']['ok']);
        self::assertSame('Discovery-Dokumente erreichbar', $good['OAuth-Discovery']['message']);

        Functions\when('get_transient')->alias(static fn (string $key) => $key === 'lit_mcp_endpoint_check'
            ? false
            : ['label' => 'MCP OAuth discovery documents', 'status' => 'critical']);
        $bad = array_column((new ConnectionStatus(static fn (): bool => true))->checks(false), null, 'label');
        self::assertFalse($bad['OAuth-Discovery']['ok']);
        self::assertStringContainsString('nicht erreichbar', $bad['OAuth-Discovery']['message']);
        self::assertStringNotContainsString('documents', $bad['OAuth-Discovery']['message']);
    }

    public function testPermalinksPrettyReflectsThePermalinkStructureOption(): void
    {
        Functions\when('get_option')->justReturn('/%postname%/');
        self::assertTrue((new ConnectionStatus())->permalinksPretty());

        Functions\when('get_option')->justReturn('');
        self::assertFalse((new ConnectionStatus())->permalinksPretty());
    }
}