Cards-To-Checklist-Trello.js

// This script can be run in AWS Lambda and simply just searches for all cards on a list and turns them into a checklist on a predefined card.
// Any checklist items that are checked off will also remove the cards
// The checklist can be deleted and will be created again with all the remaining cards.

var Trello = require("trello");
var trello = new Trello("", "");

board = '';
list_check = '';
check_list_id = "";
check_list_card = "";

exports.handler = function(event, context) {
	checkCheckList()
}

cards = {} // name as key, value is id
checklist_items = []



function checkCheckList(){
	trello.getChecklistsOnCard(check_list_card, doneCheckListCheck);

}

function processCheckList(res, res2){
	console.log(res)
	console.log(res2)
	trello.getCardsOnList(list_check, gotItems);
}

function doneCheckListCheck(res,res2){
	if (res2.length == 0) {
		console.log("no checklist - creating")
		trello.addChecklistToCard(check_list_card, "Checklist", processCheckList);
	} else {
		console.log("using existing checklist")
		processCheckList()
	}
}

function gotCheckList(res, res2){
	items = res2[0]["checkItems"] ;  //TODO don't assume one checklist
	console.log(res2[0])
	check_list_id = res2[0]["id"]
    for(i=0; i<items.length; i++){
    	checklist_items.push(items[i].name)
    	if (items[i].state == 'complete') {
    		console.log(items[i])
    		trello.deleteCard(cards[items[i].name])
    		delete cards[items[i].name]
    	}
    }
    addNewCards();
}

function gotItems(res, res2){
	for(i=0; i<res2.length; i++){
		if (res2[i].id != check_list_card){
			cards[res2[i].name] = res2[i].id
		}
		
	}
	trello.getChecklistsOnCard(check_list_card, gotCheckList);
}

function addNewCards(){
	Object.keys(cards).forEach(function(key) {
		if (checklist_items.indexOf(key) == -1) {
			trello.addItemToChecklist(check_list_id, key);
		}
	});
}