Class: RubyFitbit

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby-fitbit.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(email, pass) ⇒ RubyFitbit

Returns a new instance of RubyFitbit.



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# File 'lib/ruby-fitbit.rb', line 11

def initialize(email, pass)
  @email = email
  @pass = pass
  @agent = Mechanize.new #{|a| a.log = Logger.new(STDERR) } #turn on if debugging
  @logged_in = false 
  @cached_data = {}
end

Instance Attribute Details

#logged_in ⇒ Object (readonly)

TODO change tests so reader isn’t needed



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# File 'lib/ruby-fitbit.rb', line 9

def logged_in
  @logged_in
end

Instance Method Details

#get_activity_score_data(date = Time.now) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 234

def get_activity_score_data(date = Time.now)
  get_graph_data('intradayActiveScore',date)
end

#get_aggregated_data(start_date = Time.now, end_date = Time.now) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 184

def get_aggregated_data(start_date = Time.now, end_date = Time.now) 
  data = {}
  formatted_date = get_fitbit_date_format(end_date)
  data[formatted_date] = get_data(end_date)
  
  date = end_date + (24 * 60 * 60)
  while date < start_date
    formatted_date = get_fitbit_date_format(date)
    data[formatted_date] = get_data(date)
    date = date + (24 * 60 * 60)
  end

  data
end

#get_avg_data(start_date = Time.now, end_date = Time.now) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 199

def get_avg_data(start_date = Time.now, end_date = Time.now) 
  data = {}
  data['calories'] = 0
  data['steps'] = 0
  data['miles_walked'] = 0
  data['sedentary_active_in_minutes'] = 0
  data['lightly_active_in_minutes'] = 0
  data['fairly_active_in_minutes'] = 0
  data['very_active_in_minutes'] = 0
  days = 0
  
  days_data = get_aggregated_data(start_date, end_date) 
  days_data.keys.each do |key|
    days += 1
    current_data = days_data[key]
    data.keys.each do |stat|
      data[stat] += current_data[stat].to_f
    end
  end

  data.keys.each do |key|
    data[key] = (data[key]/days)
  end

  data
end

#get_calorie_data(date = Time.now) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 230

def get_calorie_data(date = Time.now)
  get_graph_data('intradayCaloriesBurned',date)
end

#get_data(date = Time.now) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 146

def get_data(date = Time.now)
  

  date = get_fitbit_date_format(date).gsub('-','/')
  return @cached_data[date] if @cached_data[date]

  page = @agent.get "https://www.fitbit.com/#{date}"
  
  data = {}
  data['calories'] = 0
  data['steps'] = 0
  data['miles_walked'] = 0.0

  page.search("//div[@class='data']").each do |datadiv|
    if datadiv.text.match(/calories burned$/)
      data['calories'] = datadiv.search("span").first.text.to_i
    elsif datadiv.text.match(/calories eaten/)
      data['calories_eaten'] = datadiv.search("span").first.text.to_i
    elsif datadiv.text.match(/steps taken/)
      data['steps'] = datadiv.search("span").first.text.to_i
    elsif datadiv.text.match(/miles traveled/)
      data['miles_walked'] = datadiv.search("span").first.text.to_f
    end
  end

  data['sedentary_active'] = page.search("//div[@class='sedentary caption']/div[@class='number']").text.strip
  data['lightly_active'] = page.search("//div[@class='lightly caption']/div[@class='number']").text.strip
  data['fairly_active'] = page.search("//div[@class='caption fairly']/div[@class='number']").text.strip
  data['very_active'] = page.search("//div[@class='caption very']/div[@class='number']").text.strip
  data['sedentary_active_in_minutes'] = get_minutes_from_time(data['sedentary_active'])
  data['lightly_active_in_minutes'] = get_minutes_from_time(data['lightly_active'])
  data['fairly_active_in_minutes'] = get_minutes_from_time(data['fairly_active'])
  data['very_active_in_minutes'] = get_minutes_from_time(data['very_active'])

  @cached_data[date] = data
  data
end

#get_eaten_calories(date = Time.now) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 135

def get_eaten_calories(date = Time.now)
  

  date = get_fitbit_date_format(date).gsub('-','/')
  page = @agent.get "https://www.fitbit.com/foods/log/#{date}"
  calories_data = page.search("//div[@id='dailyTotals']").first
  calories_xml = calories_data.to_xml
  calories_text = calories_data.text
  {:calories_xml => calories_xml, :calories_text => calories_text}
end

#get_fitbit_date_format(date) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 267

def get_fitbit_date_format(date)
  #fitbit date format expects like so: 2010-06-24
  date = date.strftime("%Y-%m-%d")
end

#get_food_items(food = "Coffe") ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 128

def get_food_items(food="Coffe")
  
  result = @agent.get "http://www.fitbit.com/solr/food/select?q=#{food}&wt=foodjson&qt=food"
  foods = JSON.parse(result.body).first[1]["foods"]
  foods
end

#get_graph_data(graph_type = 'intradaySteps', date = Time.now, data_version = '2108') ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 238

def get_graph_data(graph_type = 'intradaySteps', date = Time.now, data_version = '2108')
  

  date = get_fitbit_date_format(date)

  params = {:userId => @userId,
    :type => graph_type,
    :version => "amchart",
    :dataVersion => data_version,
    :chart_Type => "column2d",
    :period => "1d",
    :dateTo => date}

  params = Mechanize::Util.build_query_string(params)
  uri = "http://www.fitbit.com/graph/getGraphData?#{params}"

  page = @agent.get uri
  doc = Nokogiri::HTML(page.content)
  minutes_segment = 0
  chart_data = {}
  doc.xpath('//data/chart/graphs/graph/value').each do |ele|
    moment = Time.parse(date)+(5*60*minutes_segment)
    minutes_segment += 1
    chart_data[moment] = ele.child.text
  end 

  chart_data
end

#get_minutes_from_time(str) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 272

def get_minutes_from_time(str)
  if m = str.to_s.strip.match(/^((\d+)hrs?)? ?((\d+)min)?$/)
    hrs = m[1].to_i * 60
    mins = m[3].to_i
    return (hrs + mins)
  end

  return 0
end

#get_steps_data(date = Time.now) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 226

def get_steps_data(date = Time.now)
  get_graph_data('intradaySteps',date)
end

#get_unit_id_for_unit(unit) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 99

def get_unit_id_for_unit(unit)
  unit_id   = nil
  unit_type = unit.match(/\d+ (.*)/)[1]

  type_map = {'oz' => '226',
              'lb' => '180',
              'gram' => '147',
              'kilogram' => '389',
              'roll' => '290',
              'serving' => '304',
              'link' => '188',
              'piece' => '251',
              'fl oz' => '128',
              'ml' => '209',
              'tsp' => '364',
              'tbsp' => '349',
              'cup' => '91',
              'pint' => '256',
              'slice' => '311',
              'liter' => '189',
              'quart' => '279',
              'entree' => '117',
              'portion' => '270'
  }

  unit_id   = type_map[unit_type]
  unit_id
end

#login ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 19

def 
  unless @logged_in
    page = @agent.get 'https://www.fitbit.com/login'
    
    form = page.forms.first
    form.email = @email
    form.password = @pass
    
    page = @agent.submit(form, form.buttons.first)
    
    @userId = page.search("//div[@class='accountLinks']").search("a")[0]['href'].gsub('/user/','')
    # @agent.cookie_jar.jar["www.fitbit.com"]['/']['uid'].value
    # @agent.cookie_jar.jar["www.fitbit.com"]['/']['sid'].value

    @logged_in = true
  end
end

#submit_food_log(options = {}) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 37

def submit_food_log(options = {})
  

  date = options.fetch(:date) {Time.now}
  date = get_fitbit_date_format(date)
  meal_type = options.fetch(:meal_type){'7'}
  food_id = options[:food_id]
  food = options[:food]
  raise "food_id or food required to submit food log" unless food_id || food
  unless food_id
    food_recommendation = get_food_items(food)
    if food_recommendation.length > 0
      food_recommendation = food_recommendation.first
      food = food_recommendation['name']
      food_id = food_recommendation['id']
    end
  end

  unit_id = options[:unit_id]
  unit = options[:unit]
  raise "unit_id or unit required to submit food log" unless unit_id || unit
  unless unit_id
    unit_id = get_unit_id_for_unit(unit)
  end

  page = @agent.get 'http://www.fitbit.com/foods/log'

  form = page.forms[1]

  form.action="/foods/log/foodLog?apiFormat=htmljson&log=on&date=#{date}"
  form.foodId = food_id
  form.foodselectinput = food
  form.unitId = unit_id
  form.quantityselectinput = unit
  form.quantityConsumed = unit
  form.mealTypeId = meal_type
  result = @agent.submit(form, form.buttons.first)
end

#submit_weight_log(options = {}) ⇒ Object 



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# File 'lib/ruby-fitbit.rb', line 76

def submit_weight_log(options = {})
  
  
  weight_units = {:lbs => "US", :stone => "UK", :kg => "METRIC"}
  
  date = options.fetch(:date) {Time.now}
  date = get_fitbit_date_format(date)
  
  unit = options[:unit]
  unit_id = weight_units[unit.to_sym]
  raise "#{unit} isn't one of Fitbit's units. Try #{weight_units.keys.join(", ")} instead." unless unit_id
  
  page = @agent.get 'http://www.fitbit.com/weight'
  
  form = page.forms[1]
  form.action="/measure/measurements?apiFormat=json&log=on&date=#{date}"
  form.send(options[:unit].to_sym, options[:weight])
  form.weightState = unit_id
  form.bodyFat = options[:percentage_fat]
  
  result = @agent.submit(form, form.buttons.first)
end