<?php
namespace Modules\Analytics\Services;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use Modules\Analytics\Models\AnalyticsEvent;
final class AnalyticsTracker
{
    public function track(Request $request, array $payload): ?AnalyticsEvent
    {
        if (!config('analytics.enabled')) return null;
        if (config('analytics.respect_dnt') && $request->header('DNT') === '1') return null;
        $path=ltrim((string)($payload['path'] ?? ''), '/');
        foreach (config('analytics.exclude_paths',[]) as $excluded) if ($excluded !== '' && str_starts_with($path, trim($excluded,'/'))) return null;
        $ip=(string)$request->ip();
        return AnalyticsEvent::create([
            'event_id'=>(string)Str::uuid(), 'site_id'=>app()->bound('currentSite') ? app('currentSite')?->id : null,
            'event_type'=>$payload['event_type'] ?? 'page_view', 'path'=>'/'.$path, 'title'=>$payload['title'] ?? null,
            'referrer'=>$payload['referrer'] ?? $request->headers->get('referer'),
            'visitor_hash'=>hash('sha256', (string)($payload['visitor_id'] ?? $request->cookie('analytics_visitor','guest'))),
            'session_hash'=>hash('sha256', (string)($payload['session_id'] ?? $request->session()->getId())),
            'ip_hash'=>config('analytics.anonymize_ip') ? hash('sha256',$ip.config('app.key')) : $ip,
            'device_type'=>$payload['device_type'] ?? null, 'browser'=>$payload['browser'] ?? null,
            'operating_system'=>$payload['operating_system'] ?? null, 'subject_type'=>$payload['subject_type'] ?? null,
            'subject_id'=>$payload['subject_id'] ?? null, 'properties'=>$payload['properties'] ?? [], 'occurred_at'=>now(),
        ]);
    }
}