Class: Spina::Shop::Invoice

Inherits:
ApplicationRecord show all
Defined in:
app/models/spina/shop/invoice.rb

Instance Method Summary collapse

Instance Method Details

#filename ⇒ Object 



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# File 'app/models/spina/shop/invoice.rb', line 9

def filename
  "inv_#{invoice_number}.pdf"
end

#sub_total ⇒ Object 



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# File 'app/models/spina/shop/invoice.rb', line 13

def sub_total
  if prices_include_tax
    invoice_lines.inject(BigDecimal(0)) { |t, i| t + (i.total / i.tax_modifier).round(2) }
  else
    invoice_lines.inject(BigDecimal(0)) { |t, i| t + i.total }
  end
end

#tax_amount ⇒ Object 



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# File 'app/models/spina/shop/invoice.rb', line 21

def tax_amount
  tax_amount_by_rates.inject(BigDecimal(0)) { |t, r| t + r[1][:tax_amount] }
end

#tax_amount_by_rates ⇒ Object 



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# File 'app/models/spina/shop/invoice.rb', line 29

def tax_amount_by_rates
  if prices_include_tax
    rates = invoice_lines.inject({}) do |h, line|
      rate = h[line.tax_rate] ||= { tax_amount: BigDecimal(0), total: BigDecimal(0) }
      rate[:total] += (line.total / line.tax_modifier).round(2)
      rate[:tax_amount] += line.total - (line.total / line.tax_modifier).round(2)
      h
    end
  else
    rates = invoice_lines.inject({}) do |h, line|
      rate = h[line.tax_rate] ||= { tax_amount: BigDecimal(0), total: BigDecimal(0) }
      rate[:total] += line.total
      rate[:tax_amount] += (line.total * (BigDecimal(line.tax_rate) / BigDecimal(100))).round(2)
      h
    end
  end

  rates.sort{|x, y| y[0] <=> x[0]}.to_h
end

#total ⇒ Object 



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# File 'app/models/spina/shop/invoice.rb', line 25

def total
  sub_total + tax_amount
end