mirror of
https://github.com/hakanensari/frankfurter.git
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33 lines
658 B
Ruby
33 lines
658 B
Ruby
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# frozen_string_literal: true
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require 'bigdecimal'
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require 'quote'
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class Converter
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attr_reader :to, :from
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def initialize(params = {})
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@amount = params[:amount]
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@from = params[:from]
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@to = params[:to]
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end
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# Converts an amount into a new currency
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# @param quote [Quote] the quote object
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# @return amount [BigDecimal] the converted amount
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def convert(quote = latest_quote)
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return amount if quote.base == to
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amount * quote.rates.fetch(to) { raise Quote::Invalid, 'Invalid to' }
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end
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def amount
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BigDecimal(@amount.to_s)
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end
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private
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def latest_quote
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@latest_quote ||= Quote.new(base: from)
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end
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end
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