Fitbit & My Fitness Pal interactions

fitbit.rb

#!/usr/bin/env ruby

require "fitgem"
require "pp"
require "yaml"

config_file = begin
  File.open(".fitgem.yml")
rescue Object => e
  puts 'No .fitgem.yml config file found'
  exit 1
end

# Load the existing yml config
config = begin
  Fitgem::Client.symbolize_keys(YAML.load(config_file))
rescue ArgumentError => e
  puts "Could not parse YAML: #{e.message}"
  exit 1
end

client = Fitgem::Client.new(config[:oauth])

# With the token and secret, we will try to use them
# to reconstitute a usable Fitgem::Client
if config[:oauth][:token] && config[:oauth][:secret]
  begin
    access_token = client.reconnect(config[:oauth][:token], config[:oauth][:secret])
  rescue Exception => e
    puts "Error: Could not reconnect Fitgem::Client due to invalid keys in .fitgem.yml"
    exit
  end
# Without the secret and token, initialize the Fitgem::Client
# and send the user to login and get a verifier token
else
  request_token = client.request_token
  token = request_token.token
  secret = request_token.secret

  puts "Go to http://www.fitbit.com/oauth/authorize?oauth_token=#{token} and then enter the verifier code below"
  verifier = gets.chomp

  begin
    access_token = client.authorize(token, secret, { :oauth_verifier => verifier })
  rescue Exception => e
    puts "Error: Could not authorize Fitgem::Client with supplied oauth verifier"
    exit
  end

  puts 'Verifier is: '+verifier
  puts "Token is:    "+access_token.token
  puts "Secret is:   "+access_token.secret

  user_id = client.user_info['user']['encodedId']
  puts "Current User is: "+user_id

  config[:oauth].merge!(:token => access_token.token, :secret => access_token.secret, :user_id => user_id)

  # Write the whole oauth token set back to the config file
  File.open(".fitgem.yml", "w") {|f| f.write(config.to_yaml) }
end

# ============================================================
# Add Fitgem API calls on the client object below this line

today = DateTime.now
15.times do |i|
  date = today - i
  activities = client.activities_on_date date
  steps = activities['summary']['steps']
  puts "#{date.strftime '%a, %Y-%m-%d'} -- #{steps} steps"
end

mfp_scraper.rb

require 'open-uri'
require 'nokogiri'
require 'date'

def get_calories user, date
  doc = get_page user, date, 'food'
  totals = doc.css("tr.total")[0]
  calories_str = totals.children.text.split[1]
  calories = Integer calories_str.delete(",")
end

def get_exercise user, date
  doc = get_page user, date, 'exercise'
  exercise = Integer doc.css('span.soFar')[2].text
end

def get_water user, date
  doc = get_page user, date, 'food'
  raw_text = doc.css(".water-counter p").children.text
  water_count = Integer raw_text.gsub(/[up|down]/i, "").strip
end

def get_page user, date, page
  str_format = "%Y-%m-%d"
  date_str = date.strftime(str_format)
  url = "http://www.myfitnesspal.com/#{page}/diary/#{user}?date=#{date_str}"
  doc = Nokogiri::HTML(open(url))
end

def main
  user = "christoomey"
  today = Date.today
  puts sprintf "%10s%10s%10s%10s", "Date", "Calories", "Exercise", "Water"
  puts "-"*45
  (0..10).each do |i|
    date = (today - i)
    calories = get_calories user, date
    exercise = get_exercise user, date
    water = get_water user, date
    date_str = date.strftime("%Y-%m-%d")
    row_str = sprintf "%10s%10s%10s%10s", date_str, calories, exercise, water
    puts row_str
  end
end

main