append to a tumblr post from the command line

cat.js

var Q = require('q');
var tumblr = require('tumblr.js');
var fs = require('fs');
var _ = require('underscore');

// Customize these. Ill give instructions soon. Or ping me for help.
var tumblrClient = tumblr.createClient({
  consumer_key: '',
  consumer_secret: '',
  token: '',
  token_secret: ''
});
var blogName = '';

function createTodaysHourlyPost(update) {
  var deferred = Q.defer();
  var localeTimeString = (new Date(Date.now())).toLocaleTimeString();
  var body = ('<p>' + localeTimeString + ' - ' + update + '</p>').toLowerCase();
  tumblrClient.text(blogName, { title: 'Hourly', body: body }, function (error, response) {
    if (error) deferred.reject(new Error(error));
    else deferred.resolve(response.id);
  });
  return deferred.promise;
}

function appendToTodaysHourlyPost(post, update) {
  var deferred = Q.defer()
  var localeTimeString = (new Date(Date.now())).toLocaleTimeString();
  var newBody = (post.body + '<p>' + localeTimeString + ' - ' + update + '</p>').toLowerCase();
  tumblrClient.edit(blogName, { id: post.id, body: newBody }, function(error, response) {
    if (error) deferred.reject(new Error(error));
    else deferred.resolve(response)
  });
  return deferred.promise;
}

function selectTodaysHourlyPostFromPosts(posts) {
  var todayLocaleDateString = (new Date(Date.now())).toLocaleDateString();
  var hourlyPost = _.find(posts, function(post) {
    var postDate = new Date(post.date);
    if (post.title == "Hourly" && postDate.toLocaleDateString() == todayLocaleDateString) {
      return true;
    }
  });
  if (hourlyPost) return hourlyPost;
  else throw new Error("Todays hourly post does not exist.");
}

function getPosts() {
  var deferred = Q.defer()
  tumblrClient.posts(blogName, { type: 'text' }, function (error, response) {
    if (error) deferred.reject(new Error(error));
    else deferred.resolve(response.posts);
  });
  return deferred.promise
}

function getTodaysHourlyPost() {
  return getPosts()
  .then(function(posts) {
    return selectTodaysHourlyPostFromPosts(posts);
  })
  .then(function(post) {
    return { id: post.id, body: post.body };
  }, function(error) {
    throw new Error(error);
  });
}

function update(update) {
  return getTodaysHourlyPost().then(function(post) {
    return appendToTodaysHourlyPost(post, update)
  }, function(error) {
    return createTodaysHourlyPost(update);
  });
}

update(process.argv[2].toString()).then(function() {
  console.log('Winning!')
}, function(error) {
  console.log('Oops! This happened:\n', error)
}).done();