🔶 Daru::APIClient 🔶

require 'daru/apiclient'
require 'daru/view'
Daru::View.plotting_library = :googlecharts

C = Daru::APIClient.new "http://bestgems.org/api/v1/gems"

def bestgems(gem)
  df = C.get("/#{gem}/daily_downloads.json")
  df.rename_vectors "daily_downloads" => gem
  df
end

rack = bestgems "rack"
rake = bestgems "rake"
json = bestgems "json"
thor = bestgems "thor"

df = rack.join(rake, how: :inner, on: ["date"])
         .join(json, how: :inner, on: ["date"])
         .join(thor, how: :inner, on: ["date"])

df.order = ["date", "rack", "rake", "json", "thor"]
df.sort!(["date"])
df = df.row[-300..-20]

chart = Daru::View::Plot.new(df,
  type: :area,
  isStacked: true,
  height: 400
  )
chart.show_in_iruby