Sequential Promises

var Q = require('Q');

// this.mapConfigs.forEach(function(config){
//   promise = promise.then(function(data){
//     console.log("Inside computeMapPolygons ------> 1", travelMode, config.timeToDrive);
//     if(data) {
//       travelMode === "best_guess" ? self.bestGuessPolygons.push(data) : self.pessimisticPolygons.push(data);
//       // self.allPolygonData.push(data);
//     }
//     // traffic_model
//     config.traffic_model = travelMode;
//     return new Map(config)
//   })
// });
var func1 = function(name) {
    console.log("Inside func 1", name);
    var deferred = Q.defer();
    setTimeout(function(){
      console.log("Resolved 1");
      deferred.resolve("two");
    }, 2000);
    return deferred.promise;
}

var func2 = function(name) {
    console.log("Inside func 2", name);
    var deferred = Q.defer();
    setTimeout(function(){
      console.log("Resolved 2");
      deferred.resolve("three");
    }, 2000);
    return deferred.promise;
}

var func3 = function(name) {
    console.log("Inside func 3", name);
    var deferred = Q.defer();
    setTimeout(function(){
      console.log("Resolved 3")
      deferred.resolve("final");
    }, 2000);
    return deferred.promise;
}

var config = ["one", "two", "three"];
var arr = [func1, func2, func3];
var trafficArr = ['pess', 'best'];

var init = function() {
  var result = Q(config[0]);
  arr.forEach(function(f, i){
    result = result.then(f);
  })
  console.log(result);
  return result;
}

var callFirstMap = function() {
  var firstDeferred = Q.defer();
  init().then(function(name){
    console.log("Inside final Call 1", name);
    firstDeferred.resolve();
  });

  return firstDeferred.promise;
}

var callSecondMap = function() {
  var secondDeferred = Q.defer();
  init().then(function(name){
    console.log("Inside final Call 2", name);
    secondDeferred.resolve();
  })

  return secondDeferred.promise;
}

var callFirstDoneCB = function() {
  console.log("First call done");
  callSecondMap().then(callSecondDoneCB);
}

var callSecondDoneCB = function() {
  console.log("Second call done");
  console.log("All DONE!!!");
}
//
callFirstMap().then(callFirstDoneCB);