<?php

/**
 * User model represents an authenticated user
 */
class User
{
    public int|string $id;
    public string $username;
    public string $email;
    public string $password;
    public ?string $rememberToken;
    public array $attributes = [];
    public ?string $createdAt;
    public ?string $updatedAt;

    public function __construct(array $data = [])
    {
        foreach ($data as $key => $value) {
            if (property_exists($this, $key)) {
                $this->$key = $value;
            } else {
                $this->attributes[$key] = $value;
            }
        }
    }

    /**
     * Get user identifier (email or username)
     */
    public function getIdentifier(): string
    {
        return $this->email ?: $this->username;
    }

    /**
     * Get user ID
     */
    public function getId(): int|string
    {
        return $this->id;
    }

    /**
     * Get custom attribute
     */
    public function getAttribute(string $key): mixed
    {
        return $this->attributes[$key] ?? null;
    }

    /**
     * Set custom attribute
     */
    public function setAttribute(string $key, mixed $value): void
    {
        $this->attributes[$key] = $value;
    }

    /**
     * Convert to array
     */
    public function toArray(): array
    {
        return [
            'id' => $this->id,
            'username' => $this->username,
            'email' => $this->email,
            'created_at' => $this->createdAt,
            'updated_at' => $this->updatedAt,
        ] + $this->attributes;
    }

    /**
     * Convert to safe array (without sensitive data)
     */
    public function toSafeArray(): array
    {
        $data = $this->toArray();
        unset($data['password'], $data['remember_token']);
        return $data;
    }
}