@extends('layouts.nova')

@php
    use App\Banner;
    use App\Models\Category;
    use Illuminate\Pagination\LengthAwarePaginator;

    // Determine a sensible category/context for this artwork so the
    // legacy layout (sidebar + hero) can be rendered similarly to
    // category listing pages.
    $category = $artwork->categories->first() ?? null;
    $contentType = $category ? $category->contentType : null;

    if ($contentType) {
        $rootCategories = Category::where('content_type_id', $contentType->id)
            ->whereNull('parent_id')
            ->orderBy('sort_order')
            ->get();
    } else {
        $rootCategories = collect();
    }

    $subcategories = $category ? $category->children()->orderBy('sort_order')->get() : collect();
    // Provide an empty paginator to satisfy any shared pagination partials
    $artworks = new LengthAwarePaginator([], 0, 24, 1, ['path' => request()->url()]);
@endphp

@section('content')
<div class="container-fluid legacy-page">
    @php Banner::ShowResponsiveAd(); @endphp

    <div class="pt-0">
        <div class="mx-auto w-full">
            <div class="flex min-h-[calc(100vh-64px)]">

                <!-- SIDEBAR -->
                <aside id="sidebar" class="hidden md:block w-72 shrink-0 border-r border-neutral-800 bg-nova-900/60 backdrop-blur-sm">
                    <div class="p-4">
                        <button class="w-full h-12 rounded-xl bg-white/5 hover:bg-white/7 border border-white/5 flex items-center gap-3 px-4">
                            <span class="w-8 h-8 rounded-lg bg-white/5 inline-flex items-center justify-center">
                                <svg class="w-5 h-5" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M4 6h16M4 12h16M4 18h16"/></svg>
                            </span>
                            <span class="text-sm text-white/90">Menu</span>
                        </button>

                        <div class="mt-6 text-sm text-neutral-400">
                            <div class="font-semibold text-white/80 mb-2">Main Categories:</div>
                            <ul class="space-y-2">
                                @foreach($rootCategories as $root)
                                    <li>
                                        <a class="flex items-center gap-2 hover:text-white" href="{{ $root->url }}"><span class="opacity-70">📁</span> {{ $root->name }}</a>
                                    </li>
                                @endforeach
                            </ul>

                            <div class="mt-6 font-semibold text-white/80 mb-2">Browse Subcategories:</div>
                            <ul class="space-y-2 sb-scrollbar max-h-56 overflow-auto pr-2">
                                @foreach($subcategories as $sub)
                                    <li><a class="hover:text-white {{ $category && $sub->id === $category->id ? 'font-semibold text-white' : 'text-neutral-400' }}" href="{{ $sub->url }}">{{ $sub->name }}</a></li>
                                @endforeach
                            </ul>
                        </div>
                    </div>
                </aside>

                <!-- MAIN -->
                <main class="flex-1">
                    <div class="relative overflow-hidden nb-hero-radial">
                        <div class="absolute inset-0 opacity-35"></div>

                        <div class="relative px-6 py-8 md:px-10 md:py-10">
                            <div class="text-sm text-neutral-400">
                                @if($contentType)
                                    <a class="hover:text-white" href="/{{ $contentType->slug }}">{{ $contentType->name }}</a>
                                @endif
                                @if($category)
                                    @foreach ($category->breadcrumbs as $crumb)
                                        <span class="opacity-50">›</span> <a class="hover:text-white" href="{{ $crumb->url }}">{{ $crumb->name }}</a>
                                    @endforeach
                                @endif
                            </div>

                            @php
                                $breadcrumbs = $category ? (is_array($category->breadcrumbs) ? $category->breadcrumbs : [$category]) : [];
                                $headerCategory = !empty($breadcrumbs) ? end($breadcrumbs) : ($category ?? null);
                            @endphp

                            <h1 class="mt-2 text-3xl md:text-4xl font-semibold tracking-tight text-white/95">{{ $headerCategory->name ?? $artwork->title }}</h1>

                            <section class="mt-5 bg-white/5 border border-white/10 rounded-2xl shadow-lg">
                                <div class="p-5 md:p-6">
                                    <div class="text-lg font-semibold text-white/90">{{ $artwork->title }}</div>
                                    <p class="mt-2 text-sm leading-6 text-neutral-400">{!! $artwork->description ?? ($headerCategory->description ?? ($contentType->name ?? 'Artwork')) !!}</p>
                                </div>
                            </section>
                            <div class="absolute left-0 right-0 bottom-0 h-36 nb-hero-fade pointer-events-none" aria-hidden="true"></div>
                        </div>
                    </div>

                    <!-- Artwork detail -->
                    <section class="px-6 pb-10 md:px-10">
                        <div class="grid grid-cols-1 md:grid-cols-3 gap-6">
                            <div class="col-span-2">
                                <div class="rounded-2xl overflow-hidden bg-black/20 border border-white/10 shadow-lg">
                                    <img src="{{ $artwork->thumbnail_url ?? '/images/placeholder.jpg' }}" alt="{{ $artwork->title }}" class="w-full h-auto object-contain" />
                                </div>
                            </div>
                            <aside class="p-4 bg-white/3 rounded-2xl border border-white/6">
                                <h3 class="font-semibold text-white">{{ $artwork->title }}</h3>
                                <p class="text-sm text-neutral-400 mt-2">{!! $artwork->description ?? 'No description provided.' !!}</p>
                                <div class="mt-4">
                                    <a href="{{ $artwork->file_path ?? '#' }}" class="inline-block px-4 py-2 bg-indigo-600 text-white rounded">Download</a>
                                </div>
                            </aside>
                        </div>

                        @if(isset($similarItems) && $similarItems->isNotEmpty())
                            <section class="mt-8" data-similar-analytics data-algo-version="{{ $similarAlgoVersion ?? '' }}" data-artwork-id="{{ $artwork->id }}">
                                <div class="mb-3 flex items-center justify-between">
                                    <h2 class="text-lg md:text-xl font-semibold text-white/95">Similar artworks</h2>
                                </div>

                                <div class="grid grid-cols-2 gap-4 md:grid-cols-3 lg:grid-cols-4">
                                    @foreach($similarItems as $item)
                                        <article class="rounded-2xl overflow-hidden border border-white/10 bg-black/20 shadow-lg">
                                            <a
                                                href="{{ $item['url'] }}"
                                                class="group block"
                                                data-similar-click
                                                data-similar-id="{{ $item['id'] }}"
                                                data-similar-title="{{ e($item['title']) }}"
                                            >
                                                <div class="aspect-[16/10] bg-neutral-900">
                                                    <img
                                                        src="{{ $item['thumb'] }}"
                                                        @if(!empty($item['thumb_srcset'])) srcset="{{ $item['thumb_srcset'] }}" @endif
                                                        loading="lazy"
                                                        decoding="async"
                                                        alt="{{ $item['title'] }}"
                                                        class="h-full w-full object-cover transition group-hover:scale-[1.02]"
                                                    />
                                                </div>
                                                <div class="p-3">
                                                    <div class="truncate text-sm font-medium text-white/90">{{ $item['title'] }}</div>
                                                    @if(!empty($item['author']))
                                                        <div class="mt-1 truncate text-xs text-neutral-400">by {{ $item['author'] }}</div>
                                                    @endif
                                                </div>
                                            </a>
                                        </article>
                                    @endforeach
                                </div>
                            </section>
                        @endif
                    </section>
                </main>
            </div>
        </div>
    </div>
</div> <!-- end .legacy-page -->

@php
    $jsonLdType = str_starts_with((string) ($artwork->mime_type ?? ''), 'image/') ? 'ImageObject' : 'CreativeWork';
    $keywords = $artwork->tags()->pluck('name')->values()->all();

    $jsonLd = [
        '@context' => 'https://schema.org',
        '@type' => $jsonLdType,
        'name' => (string) $artwork->title,
        'description' => trim(strip_tags((string) ($artwork->description ?? ''))),
        'author' => [
            '@type' => 'Person',
            'name' => (string) optional($artwork->user)->name,
        ],
        'datePublished' => optional($artwork->published_at)->toAtomString(),
        'url' => request()->url(),
        'image' => (string) ($artwork->thumbnail_url ?? ''),
        'keywords' => $keywords,
    ];
@endphp
<script type="application/ld+json">{!! json_encode($jsonLd, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) !!}</script>
@if(isset($similarItems) && $similarItems->isNotEmpty())
<script>
    (function () {
        var section = document.querySelector('[data-similar-analytics]');
        if (!section) return;

        var algoVersion = section.getAttribute('data-algo-version') || '';
        var sourceArtworkId = section.getAttribute('data-artwork-id') || '';
        var anchors = section.querySelectorAll('[data-similar-click]');

        var impressionPayload = {
            event: 'similar_artworks_impression',
            source_artwork_id: sourceArtworkId,
            algo_version: algoVersion,
            item_ids: Array.prototype.map.call(anchors, function (anchor) {
                return anchor.getAttribute('data-similar-id');
            })
        };

        window.dataLayer = window.dataLayer || [];

        function sendAnalytics(payload) {
            var endpoint = '/api/analytics/similar-artworks';
            var body = JSON.stringify(payload);

            if (navigator.sendBeacon) {
                var blob = new Blob([body], { type: 'application/json' });
                navigator.sendBeacon(endpoint, blob);
                return;
            }

            fetch(endpoint, {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: body,
                keepalive: true
            }).catch(function () {
                // ignore analytics transport errors
            });
        }

        window.dataLayer.push(impressionPayload);
        anchors.forEach(function (anchor, index) {
            sendAnalytics({
                event_type: 'impression',
                source_artwork_id: Number(sourceArtworkId),
                similar_artwork_id: Number(anchor.getAttribute('data-similar-id')),
                algo_version: algoVersion,
                position: index + 1,
                items_count: anchors.length
            });
        });

        anchors.forEach(function (anchor, index) {
            anchor.addEventListener('click', function () {
                window.dataLayer.push({
                    event: 'similar_artworks_click',
                    source_artwork_id: sourceArtworkId,
                    algo_version: algoVersion,
                    similar_artwork_id: anchor.getAttribute('data-similar-id'),
                    similar_artwork_title: anchor.getAttribute('data-similar-title') || '',
                    position: index + 1
                });

                sendAnalytics({
                    event_type: 'click',
                    source_artwork_id: Number(sourceArtworkId),
                    similar_artwork_id: Number(anchor.getAttribute('data-similar-id')),
                    algo_version: algoVersion,
                    position: index + 1
                });
            });
        });
    })();
</script>
@endif
@endsection

@push('styles')
<style>
    .nb-hero-fade {
        background: linear-gradient(180deg, rgba(17,24,39,0) 0%, rgba(7,10,15,0.9) 60%, rgba(7,10,15,1) 100%);
    }
</style>
@endpush