@extends('layouts.nova')

@php
    use App\Support\ForumPostContent;
    use App\Support\AvatarUrl;
    use Illuminate\Support\Facades\Gate;
    use Illuminate\Support\Str;

    $filesBaseUrl = rtrim((string) config('cdn.files_url', ''), '/');

    $serializePost = function ($post) use ($filesBaseUrl) {
        $user = $post->user ?? null;
        return [
            'id'         => $post->id,
            'user_id'    => $post->user_id,
            'content'    => $post->content,
            'rendered_content' => ForumPostContent::render($post->content),
            'created_at' => $post->created_at?->toIso8601String(),
            'edited_at'  => $post->edited_at?->toIso8601String(),
            'is_edited'  => (bool) $post->is_edited,
            'can_edit'   => auth()->check() && (
                (int) $post->user_id === (int) auth()->id() || Gate::allows('moderate-forum')
            ),
            'current_user_id' => auth()->id(),
            'user' => $user ? [
                'id'         => $user->id,
                'name'       => $user->name,
                'avatar_url' => AvatarUrl::forUser((int) $user->id, $user->profile?->avatar_hash ?? null),
                'role'       => $user->role ?? 'member',
                'level'      => (int) ($user->level ?? 1),
                'rank'       => (string) ($user->rank ?? 'Newbie'),
            ] : null,
            'attachments' => collect($post->attachments ?? [])->map(fn ($a) => [
                'id'        => $a->id,
                'mime_type' => $a->mime_type,
                'url'       => $filesBaseUrl !== '' ? $filesBaseUrl . '/' . ltrim($a->file_path, '/') : '/' . ltrim($a->file_path, '/'),
                'file_size' => $a->file_size,
                'width'     => $a->width,
                'height'    => $a->height,
            ])->values()->all(),
        ];
    };

    $serializedOp    = isset($opPost) && $opPost ? $serializePost($opPost) : null;
    $serializedPosts = collect($posts->items())->map($serializePost)->values()->all();
    $threadDescription = null;
    $threadDescriptionSource = (string) ($serializedOp['rendered_content'] ?? $serializedOp['content'] ?? '');

    if ($threadDescriptionSource !== '') {
        $threadDescriptionSource = html_entity_decode($threadDescriptionSource, ENT_QUOTES | ENT_HTML5, 'UTF-8');
        $threadDescriptionSource = html_entity_decode($threadDescriptionSource, ENT_QUOTES | ENT_HTML5, 'UTF-8');
        $threadDescription = trim((string) preg_replace('/\s+/u', ' ', strip_tags($threadDescriptionSource)));
        $threadDescription = Str::limit($threadDescription, 220);
    }

    $paginationData = [
        'current_page' => $posts->currentPage(),
        'last_page'    => $posts->lastPage(),
        'per_page'     => $posts->perPage(),
        'total'        => $posts->total(),
    ];

    $makeForumAuthor = function ($user) {
        if (! $user) {
            return null;
        }

        $name = trim((string) ($user->name ?? $user->username ?? ''));

        if ($name === '') {
            return null;
        }

        $username = trim((string) ($user->username ?? ''));

        return array_filter([
            'name' => $name,
            'url' => $username !== '' ? url('/@' . ltrim($username, '@')) : null,
        ]);
    };

    // Ensure we always provide a top-level author object for structured data.
    $topAuthor = $makeForumAuthor($author ?? $opPost?->user ?? null);
    if (! $topAuthor) {
        $topAuthor = ['name' => (string) ($opPost?->user?->name ?? $thread->user?->name ?? 'Skinbase')];
    }

    $forumMicrodata = [
        'kind' => 'topic',
        'canonical' => route('forum.thread.show', ['thread' => $thread->id, 'slug' => $thread->slug]),
        'title' => (string) $thread->title,
        'text' => $threadDescription,
        'date_published' => $thread->created_at?->toIso8601String(),
        'date_modified' => ($thread->last_post_at ?? $thread->updated_at)?->toIso8601String(),
        'comment_count' => (int) ($reply_count ?? 0),
        'author' => $topAuthor,
        'comments' => collect([$opPost])
            ->filter()
            ->merge($posts->getCollection())
            ->map(function ($post) use ($makeForumAuthor, $thread) {
                $rendered = (string) ForumPostContent::render((string) ($post->content ?? ''));
                $text = trim((string) preg_replace('/\s+/u', ' ', strip_tags(html_entity_decode($rendered, ENT_QUOTES | ENT_HTML5, 'UTF-8'))));

                // If a post has no textual content, provide a short fallback so
                // the Comment structured data contains one of the required
                // representations (text/image/video). Prefer a simple label for
                // attachments or a generic reply placeholder.
                if ($text === '') {
                    $hasAttachments = ! empty($post->attachments ?? null) && count($post->attachments ?? []) > 0;
                    if ($hasAttachments) {
                        $text = 'Attachment';
                    } else {
                        $text = 'Reply';
                    }
                }

                return array_filter([
                    'url' => route('forum.thread.show', ['thread' => $post->thread_id, 'slug' => $thread->slug]) . '#post-' . $post->id,
                    'text' => Str::limit($text, 300),
                    'date_published' => $post->created_at?->toIso8601String(),
                    'date_modified' => ($post->edited_at ?? $post->created_at)?->toIso8601String(),
                    'author' => $makeForumAuthor($post->user ?? null) ?: ['name' => (string) ($post->user?->name ?? 'Skinbase')],
                ], fn ($value) => $value !== null && $value !== '');
            })
            ->values()
            ->all(),
    ];
@endphp

@section('content')
@include('partials.seo.forum-microdata', ['forumMicrodata' => $forumMicrodata])
<div id="forum-thread-root"></div>
@php
    $forumThreadProps = json_encode([
        'thread'          => [
            'id'         => $thread->id,
            'title'      => $thread->title,
            'slug'       => $thread->slug,
            'description'=> $threadDescription,
            'views'      => (int) ($thread->views ?? 0),
            'is_pinned'  => (bool) $thread->is_pinned,
            'is_locked'  => (bool) $thread->is_locked,
            'created_at' => $thread->created_at?->toIso8601String(),
        ],
        'category'        => ['id' => $category->id ?? null, 'name' => $category->name ?? '', 'slug' => $category->slug ?? ''],
        'author'          => ['name' => $author->name ?? 'Skinbase'],
        'opPost'          => $serializedOp,
        'posts'           => $serializedPosts,
        'pagination'      => $paginationData,
        'replyCount'      => (int) ($reply_count ?? 0),
        'sort'            => $sort ?? 'asc',
        'quotedPost'      => $quoted_post ? ['user' => ['name' => data_get($quoted_post, 'user.name', 'Anonymous')]] : null,
        'replyPrefill'    => $reply_prefill ?? '',
        'isAuthenticated' => auth()->check(),
        'canModerate'     => Gate::allows('moderate-forum'),
        'csrfToken'       => csrf_token(),
        'status'          => session('status'),
    ], JSON_THROW_ON_ERROR | JSON_UNESCAPED_UNICODE);
@endphp
<script type="application/json" id="forum-thread-props">{!! $forumThreadProps !!}</script>
@endsection

@push('scripts')
    @vite(['resources/js/entry-forum.jsx'])
@endpush