osb/app/User.php

<?php

namespace App;

use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Support\Facades\Cache;
use Leenooks\Carbon;
use App\Models\Account;

class User extends Authenticatable
{
    use Notifiable;

	protected $dates = ['created_at','updated_at','last_access'];

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];


    public function accounts()
    {
		return $this->hasMany(Models\Account::class);
    }

	/**
	 * Logged in users full name
	 *
	 * @return string
	 */
	public function getFullNameAttribute()
	{
		return sprintf('%s %s',$this->firstname,$this->lastname);
	}

	/**
	 * Return a Carbon Date if it has a value.
	 *
	 * @param $value
	 * @return Leenooks\Carbon
	 * @todo This attribute is not in the schema
	 */
	public function getLastAccessAttribute($value)
	{
		if (! is_null($value))
			return new Carbon($value);
	}

	/**
	 * @deprecated Use static::getFullNameAttribute()
	 * @return mixed
	 */
	public function getNameAttribute()
	{
		return $this->full_name;
	}

	protected function agents() {
		return $this->hasMany(static::class,'parent_id','id');
	}

	protected function clients() {
		return $this->hasMany(\App\User::class);
	}

	protected function supplier()
	{
		return $this->belongsTo(static::class,'parent_id','id');
	}

	protected function suppliers() {
		return $this->hasMany(static::class,'parent_id','id');
	}

	// List all the agents, including agents of agents
	public function all_agents()
	{
		$result = collect();

		foreach ($this->agents()->orderBy('id')->get() as $o)
		{
			if (! $o->active)
				continue;

			$result->push($o->all_agents());
			$result->push($this);
		}

		return $result->flatten();
	}

	public function all_clients()
	{
		// List all the clients of my agents
	}

	public function all_suppliers()
	{
		// For each supplier, so if that supplier has a parent
	}

	public function role()
	{
		// If I have agents and no parent, I am the wholesaler
		if (is_null($this->parent_id) AND $this->all_agents()->count())
			return 'Wholesaler';

		// If I have agents and a parent, I am a reseller
		elseif ($this->parent_id AND $this->all_agents()->count())
			return 'Reseller';

		// If I have no agents and a parent, I am a customer
		elseif (! $this->all_agents()->count())
			return 'Customer';
	}
}