<?php

namespace App\Console\Commands;

use App\Events\PresenceChanged;
use App\Models\Person;
use App\Services\UnifiClient;
use Illuminate\Console\Command;

/**
 * Presence sweep. "home" immediately on association; "away" only after a debounce
 * (iPhone WLAN sleep causes false-aways otherwise). Never hangs a security automation
 * on a single raw signal.
 */
class PresencePollCommand extends Command
{
    protected $signature = 'presence:poll';

    protected $description = 'Poll UniFi for client presence and update persons.';

    private const AWAY_DEBOUNCE_MINUTES = 8;

    public function handle(UnifiClient $unifi): int
    {
        if (! $unifi->isConfigured()) {
            $this->warn('UniFi is not configured (UNIFI_* env).');

            return self::SUCCESS;
        }

        try {
            $connected = array_flip($unifi->connectedMacs());
        } catch (\Throwable $e) {
            report($e);
            $this->error('UniFi poll failed: '.$e->getMessage());

            return self::FAILURE;
        }

        $this->info('UniFi active clients: '.count($connected));
        $debounce = now()->subMinutes(self::AWAY_DEBOUNCE_MINUTES);

        foreach (Person::whereNotNull('mac')->get() as $person) {
            $home = isset($connected[strtolower($person->mac)]);

            if ($home) {
                $person->last_seen_home_at = now();
                if ($person->presence !== 'home') {
                    $this->markPresence($person, 'home');
                } else {
                    $person->save();
                }

                continue;
            }

            // Not associated: flip to away only once the debounce has elapsed.
            $seenLongAgo = $person->last_seen_home_at === null || $person->last_seen_home_at->lt($debounce);
            if ($person->presence !== 'away' && $seenLongAgo) {
                $this->markPresence($person, 'away');
            }
        }

        return self::SUCCESS;
    }

    private function markPresence(Person $person, string $presence): void
    {
        $person->presence = $presence;
        $person->presence_changed_at = now();
        $person->save();

        PresenceChanged::dispatch($person->uuid);
    }
}