Class: Position

Inherits:
Object
  • Object
show all
Defined in:
lib/bitflyer/cli/model/position.rb

Instance Method Summary collapse

Constructor Details

#initialize(positions) ⇒ Position

Returns a new instance of Position.



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# File 'lib/bitflyer/cli/model/position.rb', line 2

def initialize(positions)
  @positions = positions
end

Instance Method Details

#average ⇒ Object 



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# File 'lib/bitflyer/cli/model/position.rb', line 12

def average
  @positions.size > 0 ? (sum / size.abs).to_i : 0
end

#profit(current_price) ⇒ Object 



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# File 'lib/bitflyer/cli/model/position.rb', line 6

def profit(current_price)
  @positions.inject(0.0) do |sum, position|
    sum + (current_price - position['price'].to_f) * position['size'].to_f * (position['side'] == 'BUY' ? 1.0 : -1.0)
  end
end

#size ⇒ Object 



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# File 'lib/bitflyer/cli/model/position.rb', line 22

def size
  @positions.inject(0.0) { |sum, position| sum + position['size'].to_f * (position['side'] == 'BUY' ? 1.0 : -1.0) }.round(2)
end

#sum ⇒ Object 



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# File 'lib/bitflyer/cli/model/position.rb', line 16

def sum
  @positions.inject(0.0) do |sum, position|
    sum + position['price'].to_f * position['size'].to_f
  end
end