Sindbad~EG File Manager

<?php

namespace App\Models;

use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;
use Laravel\Sanctum\HasApiTokens;
use Tymon\JWTAuth\Contracts\JWTSubject;

use App\Models\UserClass;
use App\Models\Classes;
use App\Models\UserQuestionnaireResponse;

class User extends Authenticatable implements JWTSubject, MustVerifyEmail
{
    use HasApiTokens, HasFactory, Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'name',
        'email',
        'password',
        'role',
        'cpf',
        'complete_registration',
        'use_terms_accepted'
    ];

    protected $appends = [
        'questionnaries_done', 
        'can_do_questionnaire',
        'do_questionnaire_number'
    ];

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

    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'email_verified_at' => 'datetime',
    ];

    const ROLE_ADMIN = 'admin';
    const ROLE_USER = 'user';


    public function isAdmin()
    {
        return $this->role === self::ROLE_ADMIN;
    }

    public function isUser()
    {
        return $this->role === self::ROLE_USER;
    }

    public function classes()
    {
        return $this->belongsToMany(Classes::class, 'users_classes', 'user_id', 'class_id');
    }

    public function userClasses()
    {
        return $this->hasMany(UserClass::class, 'user_id');
    }

    public function activeClass()
    {
        return $this->belongsToMany(Classes::class, 'users_classes', 'user_id', 'class_id')
            ->wherePivot('active', true)
            ->withPivot('id')
            ->with(['year', 'category']);
    }

    public function getQuestionnariesDoneAttribute()
    {
        return $this->getLastQuestionnaireNumber();
    }

    public function questionnaireResponses()
    {
        return $this->hasMany(UserQuestionnaireResponse::class);
    }

    public function getLastQuestionnaireNumber()
    {
        $lastResponse = $this->questionnaireResponses()
            ->whereNotNull('user_class_id')
            ->latest()
            ->first();

        return $lastResponse ? $lastResponse->number : 0;
    }

    public function getCanDoQuestionnaireAttribute()
    {
        $activeClass = $this->activeClass()->first();
        
        if (!$activeClass) {
            return false;
        }
        
        $userClassId = $activeClass->pivot->id;
        
        $answeredCount = $this->questionnaireResponses()
            ->where('user_class_id', $userClassId)
            ->count();

        return $answeredCount < $activeClass->quiz_released_number;
    }

    public function getDoQuestionnaireNumberAttribute()
    {
        $activeClass = $this->activeClass()->first();
        
        if (!$activeClass) {
            return null;
        }
        
        $userClassId = $activeClass->pivot->id;
        
        $lastResponse = $this->questionnaireResponses()
            ->where('user_class_id', $userClassId)
            ->orderBy('number', 'desc')
            ->first();
        
        return $lastResponse ? $lastResponse->number + 1 : 1;
    }

    public function userQuestionnaireResponses()
    {
        return $this->hasMany(UserQuestionnaireResponse::class);
    }

    /**
     * Get the identifier that will be stored in the subject claim of the JWT.
     *
     * @return mixed
     */
    public function getJWTIdentifier()
    {
        return $this->getKey();
    }


    /**
     * Return a key value array, containing any custom claims to be added to the JWT.
     *
     * @return array
     */
    public function getJWTCustomClaims()
    {
        return [];
    }
}