<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

class DeviceGroup extends Model
{
    use HasFactory;

    protected $fillable = [
        'traccar_group_id',
        'name',
        'description',
        'attributes',
        'is_active',
    ];

    protected $casts = [
        'attributes' => 'array',
        'is_active' => 'boolean',
    ];

    /**
     * Get devices in this group
     */
    public function devices(): HasMany
    {
        return $this->hasMany(Device::class, 'group_id');
    }

    /**
     * Get users who have access to this group
     */
    public function users(): BelongsToMany
    {
        return $this->belongsToMany(User::class, 'device_group_user', 'device_group_id', 'user_id');
    }

    /**
     * Scope for active groups
     */
    public function scopeActive($query)
    {
        return $query->where('is_active', true);
    }

    /**
     * Get device count in this group
     */
    public function getDeviceCountAttribute(): int
    {
        return $this->devices()->count();
    }
}