Class: Payday::PdfRenderer

Inherits:
Object
  • Object
show all
Defined in:
lib/payday/pdf_renderer.rb

Overview

Renders an invoice to PDF by feeding a presented Hash to the Typst template.

Invoice data crosses into the template only as sys_inputs JSON, where Typst treats every string as literal text. Never interpolate invoice data into the template source.

Constant Summary collapse

TEMPLATE = 
File.expand_path('templates/invoice.typ', __dir__)
FONT_DIR = 
File.expand_path('../../fonts', __dir__)
FONTS = 
%w[NotoSans-Regular.ttf NotoSans-Bold.ttf].freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(invoice, appendix: nil) ⇒ PdfRenderer

Returns a new instance of PdfRenderer.



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# File 'lib/payday/pdf_renderer.rb', line 43

def initialize(invoice, appendix: nil)
  @invoice = invoice
  @appendix = Appendix.wrap(appendix)
  @dependencies = {}
end

Class Method Details

.number_to_currency(number, invoice) ⇒ Object

Converts this number to a formatted currency string



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# File 'lib/payday/pdf_renderer.rb', line 27

def self.number_to_currency(number, invoice)
  Money.locale_backend = :currency
  Money.rounding_mode = BigDecimal::ROUND_HALF_UP
  currency = Money::Currency.wrap(currency_for(invoice))
  number *= currency.subunit_to_unit
  number = number.round unless Money.default_infinite_precision
  Money.new(number, currency).format
end

.render(invoice, appendix: nil) ⇒ Object

Renders the given invoice as a pdf, returning a string. See Payday::Appendix for appending pages of your own to it.



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# File 'lib/payday/pdf_renderer.rb', line 22

def self.render(invoice, appendix: nil)
  new(invoice, appendix: appendix).render
end

.render_to_file(invoice, path, appendix: nil) ⇒ Object

Renders the given invoice as a pdf on disk



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# File 'lib/payday/pdf_renderer.rb', line 16

def self.render_to_file(invoice, path, appendix: nil)
  File.binwrite(path, render(invoice, appendix: appendix))
end

Instance Method Details

#render ⇒ Object 



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# File 'lib/payday/pdf_renderer.rb', line 49

def render
  data = InvoicePresenter.new(@invoice).to_h
  register_qr_code(data[:qr_code])
  data[:logo] = 

  Typst(body: body, dependencies: dependencies, fonts: fonts, sys_inputs: sys_inputs(data))
    .compile(:pdf).bytes.flatten.pack('C*')
end