Notification system! Add button in Google Presentation for share a single slide in a Telegram channel.

readme.md

Setup

• Open Presentation doc
• Copy this script
• Click File > Edit property and set script property TELEGRAM_TOKEN and TELEGRAM_CHAT_ID
• Click Resource > Advanced Google Service and enable Slide API (also on API Console)
• Save script and refresh the presentation
• Done! 😀

google-apps-script-slide-share-telegram-slack-multicountry.js

function onOpen() {
  var ui = SlidesApp.getUi();
  ui.createMenu('GDG Tools')
      .addSubMenu(ui.createMenu('Share this slide on "GDG Italia"')
          .addItem('Telegram (favorite)', 'shareItalyTelegram')
          .addItem('Slack', 'shareItalySlack'))
      .addSubMenu(ui.createMenu('Share this slide on "GDG Spain"')
          .addItem('Telegram', 'shareSpainTelegram')
          .addItem('Slack (favorite)', 'shareSpainSlack'))
      .addToUi();
}


// Menu functions

function shareItalyTelegram() {
  var slideInfo = getCurrentSlide();
  var properties = PropertiesService.getScriptProperties();
  var tToken = properties.getProperty('ITALY_TELEGRAM_TOKEN'); 
  var chatId = properties.getProperty('ITALY_TELEGRAM_CHAT_ID');
  sendTelegramPhoto(tToken, chatId, slideInfo['thumbnail'], slideInfo['url']);
}

function shareItalySlack() {
  var slideInfo = getCurrentSlide();
  var properties = PropertiesService.getScriptProperties();
  var webhook = properties.getProperty('ITALY_SLACK_WEBHOOK'); 
  var channel = properties.getProperty('ITALY_SLACK_CHANNEL');
  sendSlackPhoto(webhook, channel, slideInfo['thumbnail'], slideInfo['url']);
}

function shareSpainTelegram() {
  var slideInfo = getCurrentSlide();
  var properties = PropertiesService.getScriptProperties();
  var tToken = properties.getProperty('SPAIN_TELEGRAM_TOKEN'); 
  var chatId = properties.getProperty('SPAIN_TELEGRAM_CHAT_ID');
  sendTelegramPhoto(tToken, chatId, slideInfo['thumbnail'], slideInfo['url']);
}

function shareSpainSlack() {
  var slideInfo = getCurrentSlide();
  var properties = PropertiesService.getScriptProperties();
  var webhook = properties.getProperty('SPAIN_SLACK_WEBHOOK'); 
  var channel = properties.getProperty('SPAIN_SLACK_CHANNEL');
  sendSlackPhoto(webhook, channel, slideInfo['thumbnail'], slideInfo['url']);
}


// Utility

function getCurrentSlide() {
  var presentation = SlidesApp.getActivePresentation();
  var presentationId = presentation.getId();
  var pageId = presentation.getSelection().getCurrentPage().getObjectId();
  return {
    'url': presentation.getUrl() + '#slide=id.' + pageId,
    'thumbnail': Slides.Presentations.Pages.getThumbnail(presentationId, pageId).contentUrl
  }
}

function sendTelegramPhoto(telegramToken, chatId, imageUrl, caption) {
  return UrlFetchApp.fetch('https://api.telegram.org/bot' + telegramToken + '/sendPhoto', {
    'method' : 'post',
    'contentType': 'application/json',
    'payload' : JSON.stringify({
      'chat_id': chatId,
      'photo': imageUrl,
      'caption': caption
    })
  });
}

function sendSlackPhoto(webhook, channel, imageUrl, caption) {
  return UrlFetchApp.fetch(webhook, {
    'method': 'post',
    'contentType': 'application/json',
    'payload': JSON.stringify({
      'channel': channel,
      'text': caption,
      'attachments': [{
        'fallback': 'Slide',
        'image_url': imageUrl
      }]
    })
  });
}

// by Jackl - Omar Miatello

google-apps-script-slide-share-telegram.js

function onOpen() {
  SlidesApp.getUi().createMenu('Strumenti GDG')
      .addItem('Pubblica su Telegram questa slide!', 'slideOnTelegram')
      .addToUi();
}

function slideOnTelegram() {
  var properties = PropertiesService.getScriptProperties();  // alternative: PropertiesService.getUserProperties();
  var telegramToken = properties.getProperty('TELEGRAM_TOKEN');  
  var chatId = properties.getProperty('TELEGRAM_CHAT_ID');
  var presentation = SlidesApp.getActivePresentation();
  var presentationId = presentation.getId();
  var pageId = presentation.getSelection().getCurrentPage().getObjectId();
  var thumbnail = Slides.Presentations.Pages.getThumbnail(presentationId, pageId);
  
  UrlFetchApp.fetch('https://api.telegram.org/bot' + telegramToken + '/sendPhoto', {
    'method' : 'post',
    'contentType': 'application/json',
    'payload' : JSON.stringify({
      'chat_id': chatId,
      'photo': thumbnail.contentUrl,
      'caption': 'URL: ' + presentation.getUrl() + '#slide=id.' + pageId
    })
  });
}

// by Jackl - Omar Miatello