Google Apps Script to shorten all URLs in a doc using Bit.ly

Shorten Links

function onOpen(e) {
  DocumentApp.getUi().createAddonMenu()
  .addItem("Shorten Links", 'displayLinks')
  .addToUi();
}

function onInstall(e) {
  onOpen(e);
}

function displayLinks() {
  var doc = DocumentApp.getActiveDocument();
  var body = doc.getBody().getText();
  var links = body.match(/http[s]*:\/\/.+/g);
  var encoded = []
  var shortened = []
  var accessToken = "ENTER_YOUR_BITLY_TOKEN_HERE"
  
  for (i = 0; i < links.length; i++) {
    encoded.push(encodeURIComponent(links[i]))
    var getRequest = httpGet("https://api-ssl.bitly.com"+"/v3/shorten?access_token="+accessToken+"&longUrl="+encoded[i]);
    var jsonData = JSON.parse(getRequest)
    shortened.push("http://bit.ly/"+jsonData.data.hash+"\n")
    DocumentApp.getActiveDocument().getBody().replaceText(links[i],shortened[i]); 
  }
}

function httpGet(url)
{
   var http = UrlFetchApp.fetch(url)
   return http.getContentText();
}

Google deprecated their URLShortener API so this came in really handy. Thanks!