<?php

declare(strict_types=1);

namespace App\Http\Controllers\Academy;

use App\Http\Controllers\Controller;
use App\Models\AcademyPromptTemplate;
use App\Services\Academy\AcademyAccessService;
use App\Services\Academy\AcademyAnalyticsService;
use App\Services\Academy\AcademyCacheService;
use App\Services\Academy\AcademyInteractionService;
use App\Support\AcademyAnalytics\AcademyAnalyticsContentType;
use App\Support\Seo\SeoFactory;
use Illuminate\Http\Request;
use Illuminate\Http\JsonResponse;
use Illuminate\Support\Str;
use Inertia\Inertia;
use Inertia\Response;

final class AcademyPromptController extends Controller
{
    public function __construct(
        private readonly AcademyAccessService $access,
        private readonly AcademyCacheService $cache,
        private readonly AcademyAnalyticsService $analytics,
        private readonly AcademyInteractionService $interactions,
    ) {
    }

    public function index(Request $request): Response|JsonResponse
    {
        abort_unless((bool) config('academy.enabled', true), 404);

        $filters = $request->validate([
            'q' => ['nullable', 'string', 'max:120'],
            'category' => ['nullable', 'string', 'max:140'],
            'difficulty' => ['nullable', 'string', 'max:40'],
            'tag' => ['nullable', 'string', 'max:60'],
        ]);

        $query = AcademyPromptTemplate::query()
            ->with('category')
            ->active()
            ->published()
            ->latest('published_at');

        if (filled($filters['q'] ?? null)) {
            $query->where(function ($builder) use ($filters): void {
                $builder->where('title', 'like', '%' . $filters['q'] . '%')
                    ->orWhere('excerpt', 'like', '%' . $filters['q'] . '%');
            });
        }

        if (filled($filters['category'] ?? null)) {
            $query->whereHas('category', fn ($builder) => $builder->where('slug', $filters['category']));
        }

        if (filled($filters['difficulty'] ?? null)) {
            $query->where('difficulty', $filters['difficulty']);
        }

        if (filled($filters['tag'] ?? null)) {
            $tag = $filters['tag'];
            $query->whereJsonContains('tags', $tag);
        }

        $prompts = $query->paginate(12)->withQueryString();
        $prompts->getCollection()->transform(fn (AcademyPromptTemplate $prompt): array => $this->access->promptPayload($prompt, $request->user()));

        if (filled($filters['q'] ?? null)) {
            $this->analytics->trackSearch((string) $filters['q'], (int) $prompts->total(), array_filter($filters), $request);
        }

        if ($request->expectsJson()) {
            return response()->json($prompts);
        }

        $seo = app(SeoFactory::class)
            ->collectionListing(
                'Academy Prompts — Skinbase',
                'Browse AI prompt templates for wallpapers, worlds, editorial covers, robots, pixel art, and creator workflows.',
                route('academy.prompts.index', $request->query()),
            )
            ->toArray();

        return Inertia::render('Academy/List', [
            'pageType' => 'prompts',
            'title' => 'Prompt library',
            'description' => 'Reusable prompt templates for wallpapers, worlds, mascots, covers, and digital art workflows.',
            'seo' => $seo,
            'items' => $prompts,
            'filters' => $filters,
            'categories' => $this->cache->categoriesByType('prompt'),
            'pricingUrl' => route('academy.pricing'),
            'analytics' => [
                'enabled' => true,
                'contentType' => filled($filters['q'] ?? null) ? AcademyAnalyticsContentType::SEARCH : null,
                'contentId' => null,
                'eventUrl' => route('academy.analytics.events.store'),
                'pageName' => 'academy_prompts_index',
                'search' => filled($filters['q'] ?? null) ? [
                    'query' => (string) $filters['q'],
                    'resultsCount' => (int) $prompts->total(),
                ] : null,
                'isPremium' => false,
                'isGuest' => $request->user() === null,
                'isSubscriber' => $request->user()?->hasAcademyCreatorAccess() || $request->user()?->hasAcademyProAccess(),
            ],
        ])->rootView('collections');
    }

    public function show(Request $request, string $slug): Response
    {
        abort_unless((bool) config('academy.enabled', true), 404);

        $prompt = AcademyPromptTemplate::query()
            ->with('category')
            ->active()
            ->published()
            ->where('slug', $slug)
            ->firstOrFail();

        $payload = $this->access->promptPayload($prompt, $request->user(), true);
        $canonical = route('academy.prompts.show', ['slug' => $prompt->slug]);
        $description = Str::limit(trim((string) ($prompt->seo_description ?? $prompt->excerpt ?? 'Skinbase Academy prompt template.')), 160, '...');
        $seo = app(SeoFactory::class)->collectionPage(
            (string) ($prompt->seo_title ?? ($prompt->title . ' — Skinbase Academy')),
            $description,
            $canonical,
            $payload['preview_image'] ?? null,
        )->toArray();
        $existingSchemas = $seo['json_ld'] ?? [];
        if (! is_array($existingSchemas) || ! array_is_list($existingSchemas)) {
            $existingSchemas = [$existingSchemas];
        }
        $seo['json_ld'] = [
            ...$existingSchemas,
            $this->promptStructuredData($payload, $canonical, $description),
        ];

        $canSavePrompt = $request->user() !== null && $this->access->canAccessPrompt($request->user(), $prompt);
        $interaction = $this->interactions->getInteractionState($request->user(), AcademyAnalyticsContentType::PROMPT, (int) $prompt->id);

        return Inertia::render('Academy/Show', [
            'pageType' => 'prompt',
            'item' => $payload,
            'seo' => $seo,
            'pricingUrl' => route('academy.pricing'),
            'saveUrl' => $canSavePrompt ? route('academy.prompts.save', ['prompt' => $prompt->id]) : null,
            'unsaveUrl' => $canSavePrompt ? route('academy.prompts.unsave', ['prompt' => $prompt->id]) : null,
            'saved' => $canSavePrompt ? ($request->user()?->academySavedPrompts()->where('prompt_template_id', $prompt->id)->exists() ?? false) : false,
            'interaction' => $interaction,
            'interactionRoutes' => [
                'like' => route('academy.interactions.like'),
                'save' => route('academy.interactions.save'),
            ],
            'loginUrl' => route('login'),
            'analytics' => [
                'enabled' => true,
                'contentType' => AcademyAnalyticsContentType::PROMPT,
                'contentId' => (int) $prompt->id,
                'eventUrl' => route('academy.analytics.events.store'),
                'pageName' => 'academy_prompt_show',
                'isPremium' => (string) ($prompt->access_level ?? 'free') !== 'free',
                'isGuest' => $request->user() === null,
                'isSubscriber' => $request->user()?->hasAcademyCreatorAccess() || $request->user()?->hasAcademyProAccess(),
                'isLocked' => (bool) ($payload['locked'] ?? false),
            ],
        ])->rootView('collections');
    }

    /**
     * @param  array<string, mixed>  $payload
     * @return array<string, mixed>
     */
    private function promptStructuredData(array $payload, string $canonical, string $description): array
    {
        $imageUrls = array_values(array_unique(array_filter([
            $payload['preview_image'] ?? null,
            ...collect((array) ($payload['public_examples'] ?? []))
                ->map(fn (array $example): ?string => $example['image_url'] ?? $example['thumb_url'] ?? null)
                ->filter()
                ->values()
                ->all(),
        ], fn (mixed $value): bool => is_string($value) && $value !== '')));
        $isFree = (string) ($payload['access_level'] ?? 'free') === 'free';

        return array_filter([
            '@context' => 'https://schema.org',
            '@type' => ['CreativeWork', 'LearningResource'],
            'name' => (string) ($payload['title'] ?? 'Skinbase Academy prompt'),
            'description' => $description,
            'url' => $canonical,
            'image' => $imageUrls !== [] ? $imageUrls : null,
            'isAccessibleForFree' => $isFree,
            'hasPart' => $isFree ? null : [
                '@type' => 'WebPageElement',
                'isAccessibleForFree' => false,
                'cssSelector' => '.academy-paywalled-content',
            ],
        ], fn (mixed $value): bool => $value !== null && $value !== '' && $value !== []);
    }
}