topnotch_website/app/Models/User.php

<?php

namespace App\Models;

use Database\Factories\UserFactory;
use Filament\Models\Contracts\HasName;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;

class User extends Authenticatable implements HasName
{
    /** @use HasFactory<UserFactory> */
    use HasFactory, Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'username',
        'is_admin',
        'password',
        'customer_id',
    ];

    /**
     * The attributes that should be hidden for serialization.
     *
     * @var array<int, string>
     */
    protected $hidden = [
        'password',
        'remember_token',
    ];

    /**
     * Get the attributes that should be cast.
     *
     * @return array<string, string>
     */
    protected function casts(): array
    {
        return [
            'password' => 'hashed',
        ];
    }

    public function setIsAdminAttribute(bool $value): void
    {
        $this->attributes['is_admin'] = $value;
        $this->ensureCustomerIsNotAdmin();
    }

    public function setCustomerIdAttribute(?int $value): void
    {
        $this->attributes['customer_id'] = $value;
        $this->ensureCustomerIsNotAdmin();
    }

    public function ensureCustomerIsNotAdmin(): void
    {
        if ($this->is_admin) {
            $this->customer_id = null;
        } elseif ($this->customer_id) {
            $this->is_admin = false;
        }
    }

    public function getFilamentName(): string
    {
        return $this->username;
    }

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