<?php

namespace App\Models;

use App\Models\Concerns\HasUuid;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class Device extends Model
{
    use HasUuid;

    protected $fillable = [
        'uuid', 'name', 'vendor', 'model', 'protocol', 'config',
        'room_id', 'status', 'last_seen_at',
    ];

    protected $casts = [
        'config' => 'array',
        'last_seen_at' => 'datetime',
    ];

    public function room(): BelongsTo
    {
        return $this->belongsTo(Room::class);
    }

    public function entities(): HasMany
    {
        return $this->hasMany(Entity::class);
    }

    /**
     * Reachable now. Real devices use last_seen recency (kept fresh by MQTT from Phase 3);
     * a mock device with no last_seen is treated as reachable so the demo doesn't rot.
     */
    public function isOnline(): bool
    {
        if ($this->status !== 'active') {
            return false;
        }

        return $this->last_seen_at === null
            || $this->last_seen_at->gt(now()->subMinutes(10));
    }
}