<?php

namespace App\Models;

/**
 * @copyright (c) 2025 Notsoweb Software (https://notsoweb.com) - All Rights Reserved
 */

// use Illuminate\Contracts\Auth\MustVerifyEmail;
use App\Http\Traits\HasProfilePhoto;
use App\Http\Traits\IsNotifiable;
use App\Observers\UserObserver;
use Illuminate\Database\Eloquent\Attributes\ObservedBy;
use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Support\Facades\Hash;
use Laravel\Passport\HasApiTokens;
use Notsoweb\LaravelCore\Traits\Models\Extended;
use Spatie\Permission\Traits\HasRoles;

/**
 * Modelo de usuario
 *
 * @author Moisés Cortés C. <moises.cortes@notsoweb.com>
 *
 * @version 1.0.0
 */
#[ObservedBy([UserObserver::class])]
class User extends Authenticatable
{
    use Extended,
        HasApiTokens,
        HasFactory,
        HasRoles,
        HasProfilePhoto,
        IsNotifiable,
        SoftDeletes;

    /**
     * Atributos permitidos
     */
    protected $fillable = [
        'name',
        'paternal',
        'maternal',
        'username',
        'email',
        'phone',
        'password',
        'profile_photo_path',
        'module_id'
    ];

    /**
     * Atributos ocultos
     */
    protected $hidden = [
        'password',
        'remember_token',
    ];

    /**
     * Atributos que se deben convertir
     */
    protected function casts(): array
    {
        return [
            'email_verified_at' => 'datetime',
            'password' => 'hashed',
        ];
    }

    /**
     * Los accesores a añadir al modelo en su forma de array
     */
    protected $appends = [
        'full_name',
        'last_name',
        'profile_photo_url',
    ];

    /**
     * Un usuario puede generar muchos eventos
     */
    public function events()
    {
        return $this->hasMany(UserEvent::class);
    }

    /**
     * Evento
     */
    public function reports()
    {
        return $this->morphMany(UserEvent::class, 'reportable');
    }

    /**
     * Nombre completo del usuario
     */
    public function fullName(): Attribute
    {
        return Attribute::make(
            get: fn() => $this->name . ' ' . $this->paternal . ' ' . $this->maternal,
        );
    }

    /**
     * Apellido paterno y materno del usuario
     */
    public function lastName(): Attribute
    {
        return Attribute::make(
            get: fn() => $this->paternal . ' ' . $this->maternal,
        );
    }

    /**
     * Validar la contraseña
     */
    public function validateForPassportPasswordGrant(string $password): bool
    {
        return Hash::check($password, $this->password);
    }

    /**
     * Reset password
     */
    public function resetPasswords()
    {
        return $this->hasMany(ResetPassword::class);
    }

    public function module()
    {
        return $this->belongsTo(Module::class);
    }

    /**
     * Módulo del cual el usuario es responsable
     */
    public function responsibleModule()
    {
        return $this->hasOne(Module::class, 'responsible_id');
    }

    /**
     * Generar username automático al crear usuario
     * Formato: inicial nombre + inicial segundo nombre + apellido paterno + inicial materno
     */
    public static function generateUsername(?string $name, ?string $paternal, ?string $maternal = null): string
    {
        // Validar que al menos tengamos nombre y apellido paterno
        if (empty($name) || empty($paternal)) {
            return self::ensureUniqueUsername('user');
        }

        $name = self::normalizeString($name);
        $paternal = self::normalizeString($paternal);
        $maternal = $maternal ? self::normalizeString($maternal) : '';

        // Separar nombres y obtener iniciales
        $nameParts = preg_split('/\s+/', trim($name));
        $firstInitial = !empty($nameParts[0]) ? substr($nameParts[0], 0, 1) : '';
        $secondInitial = isset($nameParts[1]) && !empty($nameParts[1]) ? substr($nameParts[1], 0, 1) : '';
        $maternalInitial = !empty($maternal) ? substr($maternal, 0, 1) : '';

        // Construir username
        $baseUsername = $firstInitial . $secondInitial . $paternal . $maternalInitial;

        // Si el username queda vacío, usar fallback
        if (empty($baseUsername)) {
            $baseUsername = 'user';
        }

        return self::ensureUniqueUsername($baseUsername);
    }


    /**
     * Normalizar string: quitar acentos, convertir a minúsculas, solo letras
     */
    private static function normalizeString(string $string): string
    {
        // Convertir a minúsculas
        $string = mb_strtolower($string);

        // Reemplazar caracteres acentuados
        $replacements = [
            'á' => 'a',
            'é' => 'e',
            'í' => 'i',
            'ó' => 'o',
            'ú' => 'u',
            'ä' => 'a',
            'ë' => 'e',
            'ï' => 'i',
            'ö' => 'o',
            'ü' => 'u',
            'à' => 'a',
            'è' => 'e',
            'ì' => 'i',
            'ò' => 'o',
            'ù' => 'u',
            'ñ' => 'n',
            'ç' => 'c',
        ];

        $string = strtr($string, $replacements);

        // Eliminar cualquier caracter que no sea letra o espacio
        $string = preg_replace('/[^a-z\s]/', '', $string);

        return $string;
    }

    /**
     * Asegurar que el username sea único, agregando número si es necesario
     */
    private static function ensureUniqueUsername(string $baseUsername): string
    {
        $username = $baseUsername;
        $counter = 1;

        while (self::where('username', $username)->exists()) {
            $counter++;
            $username = $baseUsername . $counter;
        }

        return $username;
    }
}