Class: DawandaConverter::Money

Inherits:
Object
  • Object
show all
Defined in:
lib/dawanda_converter/money.rb

Constant Summary collapse

@@conversions =

Declared as a Class variable so all objects (Money) created have the same conversion rates available

Hash.new

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(amount, currency) ⇒ Money

Returns a new instance of Money.



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

def initialize(amount, currency)
    @amount = ( amount || 0 ) #if nil it just assigns ZERO
    @currency = currency
end

Class Method Details

.conversion_rates(currency = "", hash = {}) ⇒ Object

————————————————————————–#



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# File 'lib/dawanda_converter/money.rb', line 35

def self.conversion_rates(currency="", hash={})
    @@conversions[currency] = hash unless currency.empty? || hash.empty?
end

Instance Method Details

#*(y) ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 71

def *(y)
  return "#{self.amount * y} #{self.currency}"
end

#+(y) ⇒ Object

————-OPERATORS SECTION——————————————-#



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# File 'lib/dawanda_converter/money.rb', line 50

def +(y)
  if self.currency != y.currency
     y.convert_to(self.currency)
  end

  return "#{self.amount + y.amount} #{self.currency}"
end

#-(y) ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 58

def -(y)
  if self.currency != y.currency
     y.convert_to(self.currency)
  end

  return "#{self.amount - y.amount} #{self.currency}"
end

#/(y) ⇒ Object 



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

def /(y)
  return "You cannot devide by ZERO!." if y == 0
  return "#{self.amount / y} #{self.currency}"
end

#<(y) ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 80

def <(y)
  if self.currency != y.currency
     y.convert_to(self.currency)
  end
  return true if self.amount < y.amount

  return false
end

#==(y) ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 75

def ==(y)
  return true if self.amount == y.amount && self.currency == y.currency
  return false
end

#>(y) ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 89

def >(y)
  if self.currency != y.currency
     y.convert_to(self.currency)
  end
  return true if self.amount > y.amount

  return false
end

#amount ⇒ Object

——————–ACCESSORS———————————————#



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# File 'lib/dawanda_converter/money.rb', line 10

def amount
    @amount
end

#amount=(amount) ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 22

def amount=(amount)
    @amount = (amount || 0 )
end

#conversions ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 30

def conversions
  @@conversions
end

#convert_to(currency) ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 39

def convert_to(currency)
   unless @@conversions.empty? || @@conversions[self.currency].nil?
     self.amount = @@conversions[self.currency][currency].to_f * self.amount
     self.currency = currency
   else
     puts "You must initialize conversion rates first."
   end
end

#currency ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 14

def currency
    @currency
end

#currency=(currency) ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 18

def currency=(currency)
    @currency = currency
end

#inspect ⇒ Object 



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# File 'lib/dawanda_converter/money.rb', line 26

def inspect
   "#{@amount} #{@currency}"
end