From Google Sheets

//Enter your workspace key, secret, template slug, workflow name & category
const workspace_key = "__WORKSPACE_KEY__";
const workspace_secret = "__WORKSPACE_SECRET__";
const template_slug = "__TEMPLATE_SLUG__";
const workflow_name = "__WORKFLOW_NAME__";
const category = "transactional"

// Map your column names to channels if need be
// Or ensure you use following names for your columns to directly map them to channels
// distinc_id for user's distinct id
// $sms for user's mobile number
// $email for user's email
// $whatsapp for user's whatsapp
// If you have other names of your columns you can modify following two lines accordingly
const channel_col_names = {"WA":"$whatsapp","Email":"$email","SMS":"$sms"};
const distinct_id_col_name = 'distinct_id'

//--------- No Editing required below -----------------//
function Trigger_Workflows() {
  var sheet = SpreadsheetApp.getActiveSheet();
  var data = sheet.getDataRange().getValues();
  var headers = data[0];
  for (var i = 1; i < data.length; i++) {
    var response = convert_row_to_payload(data[i], headers);
    if (response.status === "TBT") {
      make_api_request(
        response.payload,
        sheet.getRange(i + 1, parseInt(response.status_col) + 1)
      );
    }
  }
}

function convert_row_to_payload(data, headers) {
  let status = "";
  let status_col = -1;
  let user = {
    distinct_id: null,
    $email: [],
    $sms: [],
    $whatsapp: [],
  };
  let payload = {};
  payload.data = {};
  let private_channelkeys = ["$sms", "$whatsapp", "$email", "distinct_id"];
  for (var i = 0; i < headers.length; i++) {
    if (data[i].length !== 0) {
      if (
        channel_col_names[headers[i]] ||
        private_channelkeys.includes(headers[i])
      ) {
        if (headers[i] !== "distinct_id") {
          if (user[channel_col_names[headers[i]]])
            user[channel_col_names[headers[i]]].push(data[i]);
          if (user[headers[i]]) user[headers[i]].push(data[i]);
        } else {
          user[headers[i]] = data[i];
        }
      }
      if (headers[i] !== "SuprSend Status") {
        payload.data[headers[i]] = data[i];
      } else {
        status = data[i];
        status_col = i;
      }
    }
  }
  user["distinct_id"] = payload.data[distinct_id_col_name];
  //user["is_transient"] = true; //Uncomment if user is temporary
  payload.users = [user];
  payload.name = workflow_name;
  payload.notification_category = category;
  payload.template = template_slug;
  return {
    payload: JSON.stringify(payload),
    status: status,
    status_col: status_col,
  };
}

function make_api_request(payload, cell) {
  const uri = "/" + workspace_key + "/trigger/";
  const url = "https://hub.suprsend.com" + uri;
  const md5 = MD5(payload);
  const now = new Date().toISOString();
  const message =
    "POST" + "\n" + md5 + "\n" + "application/json" + "\n" + now + "\n" + uri;
  const byteSignature = Utilities.computeHmacSha256Signature(
    message,
    workspace_secret
  );
  const signature = Utilities.base64Encode(byteSignature);
  var options = {
    method: "POST",
    contentType: "application/json",
    headers: {
      Authorization: workspace_key + ":" + signature,
      Date: now,
    },
    payload: payload,
    muteHttpExceptions: true,
  };
  cell.setValue("Processing...");
  try {
    var response = UrlFetchApp.fetch(url, options);
    cell.setValue(response.getContentText());
  } catch (error) {
    cell.setValue("Error : " + error);
  }
}

function onOpen() {
  var ui = SpreadsheetApp.getUi();
  // Or DocumentApp or FormApp.
  ui.createMenu("SuprSend")
    .addItem("Trigger SuprSend Workflow", "Trigger_Workflows")
    .addToUi();
}

function MD5(input, isShortMode) {
  var isShortMode = !!isShortMode; // Be sure to be bool
  var txtHash = "";
  var rawHash = Utilities.computeDigest(
    Utilities.DigestAlgorithm.MD5,
    input,
    Utilities.Charset.UTF_8
  );

  if (!isShortMode) {
    for (i = 0; i < rawHash.length; i++) {
      var hashVal = rawHash[i];

      if (hashVal < 0) {
        hashVal += 256;
      }
      if (hashVal.toString(16).length == 1) {
        txtHash += "0";
      }
      txtHash += hashVal.toString(16);
    }
  } else {
    for (j = 0; j < 16; j += 8) {
      hashVal =
        (rawHash[j] + rawHash[j + 1] + rawHash[j + 2] + rawHash[j + 3]) ^
        (rawHash[j + 4] + rawHash[j + 5] + rawHash[j + 6] + rawHash[j + 7]);

      if (hashVal < 0) {
        hashVal += 1024;
      }
      if (hashVal.toString(36).length == 1) {
        txtHash += "0";
      }

      txtHash += hashVal.toString(36);
    }
  }

  // change below to "txtHash.toUpperCase()" if needed
  return txtHash;
}