<?php

use MintyPHP\Buffer;
use MintyPHP\Http\Request;
use MintyPHP\Router;
use MintyPHP\Service\Access\PermissionService;
use MintyPHP\Service\Docs\DocsCatalogService;
use MintyPHP\Support\Guard;

Guard::requireLogin();
Guard::requirePermission(PermissionService::DOCS_VIEW);

$docGroups = DocsCatalogService::docGroups();
$allDocs = DocsCatalogService::allDocs();
if ($allDocs === []) {
    Router::redirect('error/not_found?url=' . urlencode(Request::pathWithQuery()));
    return;
}

$slug = trim((string) ($slug ?? ''));
if ($slug === '') {
    Router::redirect('admin/docs/' . DocsCatalogService::defaultSlug());
    return;
}

if (!array_key_exists($slug, $allDocs)) {
    Router::redirect('error/not_found?url=' . urlencode(Request::pathWithQuery()));
    return;
}

$rawMarkdown = DocsCatalogService::readMarkdown($slug);
if ($rawMarkdown === null) {
    Router::redirect('error/not_found?url=' . urlencode(Request::pathWithQuery()));
    return;
}

$prepared = DocsCatalogService::prepareRenderedDocument($rawMarkdown, [1, 2, 3]);
$renderedHtml = (string) ($prepared['html'] ?? '');
$tocItems = [];
foreach (($prepared['headings'] ?? []) as $heading) {
    $level = (int) ($heading['level'] ?? 0);
    if (!in_array($level, [2, 3], true)) {
        continue;
    }

    $tocItems[] = [
        'level' => $level,
        'text' => (string) ($heading['text'] ?? ''),
        'anchor' => (string) ($heading['anchor'] ?? ''),
    ];
}

$currentSlug = $slug;
$currentTitle = (string) ($allDocs[$slug] ?? $slug);

Buffer::set('title', $currentTitle . ' - ' . t('Documentation'));
Buffer::set('style_groups', json_encode(['docs']));
Buffer::set('docs_rendered_html', $renderedHtml);