Module: Price

Defined in:
lib/price/net.rb,
lib/price/version.rb

Constant Summary collapse

VERSION = 
"0.1.2"

Class Method Summary collapse

Class Method Details

.prices(limit = 10) ⇒ Object 



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# File 'lib/price/net.rb', line 9

def self.prices(limit=10)
  url = "https://api.coinmarketcap.com/v1/ticker/?limit=#{limit}"
  begin
    parsed = JSON.parse(HTTP.get(url))
  rescue StandardError => e
    puts Paint['Unable to get prices. Check your internet connection.',
      '#e74c3c']
    exit 1
  end
  t = Terminal::Table.new do |rows|

    rows << [Paint['Rank', '#3498db'], Paint['Coin', '#3498db'],
      Paint['Price', '#3498db'], Paint['Change (1h)', '#3498db'],
      Paint['Change (24h)', '#3498db'], Paint['Change (7d)', '#3498db'],
      Paint['Market Cap (USD)', '#3498db']]
    rows.add_separator

    parsed.each do |n|

      green = '#2ecc71'
      red   = '#e74c3c'

      one_h_change = n['percent_change_1h']  + '%'
      day_change   = n['percent_change_24h'] + '%'
      week_change  = n['percent_change_7d']  + '%'

      # Do some color stuff here
      if one_h_change.include?('-')
        one_h_change = Paint[one_h_change, red]
      else
        one_h_change = Paint[one_h_change, green]
      end

      if day_change.include?('-')
        day_change = Paint[day_change, red]
      else
        day_change = Paint[day_change, green]
      end

      if week_change.include?('-')
        week_change = Paint[week_change, red]
      else
        week_change = Paint[week_change, green]
      end


      rows << [n['rank'], n['name'], '$' + n['price_usd'], one_h_change,
        day_change, week_change,
        ActiveSupport::NumberHelper.number_to_human(n['market_cap_usd'].to_i)]
    end
  end
  return t
end