Magic Link 1

Magic Link 1

/**
 * pass mobile number of the user for whom
 * you want to create an authenticated link,
 * this mobile number may/may not be in your
 * user's database
 */
function createMagicLink($mobileNumber, $targetScreenUrl) {
  // generate a random string of length 8
  $randomString = generateRandomString(8);
  $maskedRandomString = generateMaskedRandomString($randomString);
  
  // now, store $maskedRandomString in your DB against this user's
  // mobile number
  // something like this ->
  // insert into magic_links (id, masked_random_string, mobile_number, target_screen)
  // values (123, $maskedRandomString, $mobileNumber, $targetScreenUrl);
  
  // now you need to create the URL for the user
  $host = "https://www.mysite.com";
  $magicLinkHandlerAPIEndpoint = "/magic_link_signup";
  $completeURL = $host + $magicLinkHandlerAPIEndpoint + "?token=" + $randomString;

  // your URL will be something like this -
  // https://www.mysite.com/magic_link_signup?token=abcd1234
  
  // generate a shortened URL -
  // use https://bitly.com/ to get to know what exactly it is
  // in our case it will be - https://bit.ly/2O2WQ0c
  $shortenedURL = generateShortenedURL($completeURL);
  
  // send this $shortenedURL to the mobile number
  sendSMS($shortenedURL, $mobileNumber);
}



function generateMaskedRandomString($str) {
  // create a hash of $str using any hashing technique
  // I am using sha1 to generate the same.
  return sha1($str);
}