KI/common/Controller/Web/Nosotros.php

<?php
namespace ProVM\KI\Common\Controller\Web;

use Psr\Container\ContainerInterface as Container;
use Psr\Http\Message\ServerRequestInterface as Request;
use Psr\Http\Message\ResponseInterface as Response;
use Slim\Views\Blade as View;

class Nosotros {
  public function __invoke(Request $request, Response $response, View $view, Container $container) {
    $filename = implode(DIRECTORY_SEPARATOR, [
      $container->get('folders.data'),
      'nosotros.json'
    ]);
    $nosotros = json_decode(trim(file_get_contents($filename)));
    $min = 200;
    $max_phrase = 50;
    if (strlen($nosotros) > $min) {
      $half = strlen($nosotros) / 2;
      $pos = strpos($nosotros, '.', $half);
      if ($pos > $half + $max_phrase) {
        $pos = strrpos($nosotros, '.', -$half);
      }
      $nosotros = $this->str_split_unicode($nosotros, $pos, '-');
      if (count($nosotros) > 2) {
        $s1 = array_shift($nosotros);
        $nosotros = [$s1, implode('', $nosotros)];
      }
    } else {
      $nosotros = [$nosotros];
    }
    return $view->render($response, 'nosotros', compact('nosotros'));
  }
  protected function str_split_unicode($str, $l = 0) {
    if ($l > 0) {
        $ret = array();
        $len = mb_strlen($str, "UTF-8");
        for ($i = 0; $i < $len; $i += $l) {
            $ret[] = mb_substr($str, $i, $l, "UTF-8");
        }
        return $ret;
    }
    return preg_split("//u", $str, -1, PREG_SPLIT_NO_EMPTY);
  }
}