<?php

namespace App\Controllers;

use App\lib\PCaptcha;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;

class CaptchaController
{
    /**
     * Generates and outputs a captcha image.
     */
    public function get(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        if (session_status() === PHP_SESSION_NONE) {
            session_start();
        }
        $captcha = new PCaptcha();
        $captcha->width = 200;
        $captcha->hight = 50;
        $captcha->leng = 6;

        try {
            $imageData = $captcha->get_captcha();
        } catch (\Throwable $e) {
            $response->getBody()->write("Captcha error: " . $e->getMessage());
            return $response->withStatus(500)->withHeader('Content-Type', 'text/plain');
        }

        $response->getBody()->write($imageData);
        return $response->withHeader('Content-Type', 'image/png');
    }
}