Downloads all assets from a chute to local folder

chutedump.rb

#!/usr/bin/env ruby
require 'FileUtils'
require 'net/http'
require 'open-uri'
require 'parallel'
require 'json'

print "Chute shortcut: "
chute_shortcut = gets.chomp
begin
  print "This will download all assets from chute #{chute_shortcut} to the current folder. Continue? [Y/n] "
  cont = gets.chomp
  exit if cont == 'n' || cont == 'N'
end while cont != 'Y' && cont != 'y' && cont != ''

per_page = 50
page = 0
max_id = nil
assets = []
begin
  page = page + 1
  response = Net::HTTP.get_response(URI("http://api.getchute.com/v2/albums/#{chute_shortcut}/assets?per_page=#{per_page}" + (max_id ? "&max_id=#{max_id}" : "")))
  unless response.code == '200'
    if response.code == '401'
      puts "Error! Invalid auth token."
    else
      puts "Invalid request."
    end
    puts response.body
    exit
  end
  puts "Downloading assets... page #{page}"
  assets = JSON.parse(response.body)['data']
  Parallel.map(assets, :in_threads => 8) do |asset|
    url = asset['source']['source_url']
    File.open("#{asset['id']}#{File.extname(url)}", 'wb') do |file|
      begin
        file.write open(url).read
        puts "Downloaded asset id=#{asset['id']}"
      rescue StandardError
        puts "Cannot download asset with id=#{asset['id']}, probably removed."
      end
    end
  end
  max_id = assets.last['chute_asset_id'] if assets.last
end while assets.size == per_page

puts "Finished! #{(page-1)*per_page + assets.size} assets downloaded."