<?php

declare(strict_types=1);

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\Artwork;
use App\Services\ArtworkStatsService;
use App\Services\XPService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

/**
 * POST /api/art/{id}/view
 *
 * Fire-and-forget view tracker.
 *
 * Every page visit should count as a new view.
 * Lightweight abuse protection is handled at the route layer via throttling,
 * while the stat increment itself is applied immediately so Studio analytics
 * reflect new visits without waiting for the scheduler to flush Redis deltas.
 */
final class ArtworkViewController extends Controller
{
    public function __construct(
        private readonly ArtworkStatsService $stats,
        private readonly XPService $xp,
    ) {}

    public function __invoke(Request $request, int $id): JsonResponse
    {
        $artwork = Artwork::public()
            ->published()
            ->where('id', $id)
            ->first();

        if (! $artwork) {
            return response()->json(['error' => 'Not found'], 404);
        }

        // Write persistent event log (auth user_id or null for guests).
        $this->stats->logViewEvent((int) $artwork->id, $request->user()?->id);

        // Apply the increment immediately so counters stay fresh in Studio.
        $this->stats->incrementViews((int) $artwork->id, 1, defer: false);

        $viewerId = $request->user()?->id;
        if ($artwork->user_id !== null && (int) $artwork->user_id !== (int) ($viewerId ?? 0)) {
            $this->xp->awardArtworkViewReceived(
                (int) $artwork->user_id,
                (int) $artwork->id,
                $viewerId,
                (string) $request->ip(),
            );
        }

        return response()->json(['ok' => true, 'counted' => true]);
    }
}