Class: Rippler::Money

Inherits:
Object
  • Object
show all
Includes:
Utils
Defined in:
lib/rippler/money.rb

Constant Summary

Constants included from Utils

Utils::RIPPLE_TIME_OFFSET

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Utils

#Account, #Money, #Offer, #Time

Constructor Details

#initialize(data) ⇒ Money

Money comes in in 3 formats: Hash: => xx, ‘currency’ => ‘XXX’, ‘issuer’ => ‘ZZZZZZZ’ String: ‘value/currency(/issuer)’ Int in a String: XRP amount in drops (x1,000,000) ? Also, generic currency id without value: ? XRP or USD/bitstamp



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# File 'lib/rippler/money.rb', line 13

def initialize data
  case data
  when Hash
    @value = data['value'].to_f
    @currency = data['currency']
    @issuer = data['issuer']
  when String
    @value, @currency, @issuer = *data.split('/')

    if @value.to_f == 0 # No value, must be generic currency: XRP or USD/bitstamp
      @currency, @issuer = @value, @currency
    else
      if @currency
        @value = @value.to_f
      else
        @value = @value.to_i/1000000.0
        @currency = "XRP"
      end
    end
  when Integer
    @value = data.to_i/1000000.0
    @currency = "XRP"
  end

  @value = @value.to_i if @value.to_i == @value
  @issuer = Account(@issuer) if @issuer
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(meth, *args) ⇒ Object

Allows methods such as xrp? usd? or btc?



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# File 'lib/rippler/money.rb', line 57

def method_missing meth, *args
  curr = meth.to_s.upcase.match(/^(...)\?$/)[1]
  if curr
    currency == curr
  else
    super
  end
end

Instance Attribute Details

#currency ⇒ Object

Returns the value of attribute currency.



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# File 'lib/rippler/money.rb', line 5

def currency
  @currency
end

#issuer ⇒ Object

Returns the value of attribute issuer.



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# File 'lib/rippler/money.rb', line 5

def issuer
  @issuer
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/rippler/money.rb', line 5

def value
  @value
end

Instance Method Details

#rate(cross) ⇒ Object

Uniform currency rate presentation



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# File 'lib/rippler/money.rb', line 42

def rate cross
  first, second =
  if self.xrp? || cross.dym?
    [self, cross]
  elsif cross.xrp? || self.btc?
    [cross, self]
  else
    [self, cross]
  end
  r = first.value.to_f/second.value.to_f
  r = r.to_i == r ? r.to_i : r.round(2)
  "#{r} #{first.currency}/#{second.currency}"
end

#to_hash ⇒ Object 



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# File 'lib/rippler/money.rb', line 74

def to_hash
  if @issuer
    {'value' => @value.to_s, 'currency' => @currency, 'issuer' => @issuer.address}
  else
    {'value' => @value.to_s, 'currency' => @currency}
  end
end

#to_s ⇒ Object 



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# File 'lib/rippler/money.rb', line 66

def to_s
  if @issuer
    "#{@value}/#{@currency}/#{@issuer.name}"
  else
    "#{@value}/#{@currency}"
  end
end