<?php
  
  namespace App\Components\Integrations\Telegram;
  
  use App\Models\Ad_employer;
  use Str;
  use Telegram\Bot\Api;
  use Telegram\Bot\Exceptions\TelegramSDKException;
  use Telegram\Bot\Laravel\Facades\Telegram;
  use Telegram\Bot\Objects\Update;
  
  class VacancyChannel
  {

      const REKAMORE_CHANNEL_ID = 'REKAMORE_CHANNEL_ID';

      private Api $botApi;
  
      public function __construct()
      {
          $this->botApi = Telegram::bot('channel_bot');
      }
  
      /**
       * @throws TelegramSDKException
       */

      private function getChatId()

      {
          $updates = $this->botApi->getUpdates();
          /** @var Update $update*/
          $chatId = null;
          foreach ($updates as $update) {

              if ($update->message?->chat->title === config('services.telegram.chat_title')) {
                  $chatId = $update->message->chat->id;
                  \Cache::set(self::REKAMORE_CHANNEL_ID, $chatId, null);
                  break;

              }
          }

          if ($chatId === null) {

              $chatId = \Cache::get(self::REKAMORE_CHANNEL_ID);
              if ($chatId === null) {
                  throw new TelegramSDKException('Cant locate group chat id');
              }

          }

          return $chatId;
      }
  
      /**
       * @throws TelegramSDKException
       */
      public function sendVacancy(Ad_employer $vacancy): void
      {
          $chatId = $this->getChatId();

          $text = $this->formatTextFotTelegram($vacancy->text);

  
          $this->botApi->sendMessage([
              'chat_id' => $chatId,
              'text' => $text,
              'disable_web_page_preview' => true,
              'parse_mode' => 'HTML'
          ]);
      }

  
      public function formatTextFotTelegram(string $text): string
      {
          $text = str_ireplace('<p>', '', $text);
          $text = str_ireplace('</p>', '', $text);
  
          $text = str_ireplace('<br>', '', $text);
          $text = str_ireplace('<br />', '', $text);
  
          $text = str_ireplace('<h3>', '<b>', $text);
          $text = str_ireplace('</h3>', '</b>', $text);
  
          $text = str_ireplace('<strong>', '<b>', $text);
          $text = str_ireplace('</strong>', '</b>', $text);
  
          $text = str_ireplace('<em>', '<i>', $text);
          $text = str_ireplace('</em>', '</i>', $text);

          return html_entity_decode($text, ENT_QUOTES | ENT_HTML5, 'UTF-8');

      }

  }