Google Forms to Trello

GoogleForms-to-Trello.gs

var authentication = "key=a...&token=9...";
var idBoard = "592....";
var inboxList = "592...";
var updatedLabel = "592....";


function getField(itemResponses, fieldName) {
  var titles = [];
  for (var i in itemResponses) {
    if (itemResponses[i].getItem().getTitle() === fieldName && itemResponses[i].getResponse().length > 0) {
      return itemResponses[i].getResponse();
    }
    titles.push(itemResponses[i].getItem().getTitle());
  }
  throw "Field [" + fieldName + "] not found in [" + titles + "]";
}

function getCardName(response) {
  var itemResponses = response.getItemResponses();
  return getField(itemResponses, "Tittel") +  
    " (" + getField(itemResponses, "Foredragsholders navn") + 
      " - " + getField(itemResponses, "Arbeidsgiver") + ")";
}

function getCardLabelIds(response) {
  var itemResponses = response.getItemResponses();
  
  var labelResponse = UrlFetchApp.fetch("https://api.trello.com/1/boards/" + idBoard + "/labels?" + authentication);
  var labelsJson = JSON.parse(labelResponse.getContentText());
 
  var idLabels = labelsJson.filter(function(label) {
    return label.name === getField(itemResponses, "Tema");
  }).map(function(label) { return label.id; });
  return idLabels;
}

function getCardDesc(response) {
  var itemResponses = response.getItemResponses();
  var body = "";
  for (var j in itemResponses) {
    var itemResponse = itemResponses[j];
    if (itemResponse.getResponse().length == 0) {
      continue;
    }
    if (itemResponse.getItem().getType() == FormApp.ItemType.PARAGRAPH_TEXT) {
      body += "\n## " + itemResponse.getItem().getTitle() + "\n" + itemResponse.getResponse() + "\n\n";
    } else {
      body += "**" + itemResponse.getItem().getTitle() + ":** " + itemResponse.getResponse() + "\n";
    }      
  }
  return body;
}

function saveToTrello(args) {
  var response = args.response;  
  var cardId = PropertiesService.getDocumentProperties().getProperty("trello_card_id_" + response.getId());
  if (cardId) {
    updateCard(cardId, response);
  } else {
    createCard(response);
  }
}

function sendAll() {
  var responses = FormApp.getActiveForm().getResponses();
  for (var i in responses) {
    saveToTrello({response: responses[i]});
  }
}

function updateCard(cardId, response) {
  var idLabels = getCardLabelIds(response);
  idLabels.push(updatedLabel);
  var payload = {
    name: getCardName(response),
    desc: getCardDesc(response),
    closed: false,
    idLabels: idLabels.join(',')
  };
  var url = 'https://api.trello.com/1/cards/' + cardId + '?' + authentication;
  var resp = UrlFetchApp.fetch(url, {"method" : "PUT", "payload" : payload, muteHttpExceptions: true});
  Logger.log(resp);
  if (resp.getResponseCode() == 404) {
    createCard(response);
  }
}

function createCard(response) {
  var payload = {
    name: getCardName(response),
    desc: getCardDesc(response),
    idList: inboxList,
    idLabels: getCardLabelIds(response).join(',')
  };
  var url = 'https://api.trello.com/1/cards?' + authentication;
  var resp = UrlFetchApp.fetch(url, {"method" : "POST", "payload" : payload});
  Logger.log(resp);
  var responseJson = JSON.parse(resp.getContentText());
  PropertiesService.getDocumentProperties().setProperty("trello_card_id_" + response.getId(), responseJson.id);
}