qrcode.rb

require 'rqrcode'
require 'csv'
require 'RMagick'

class Attendee
  attr_reader :email, :register, :full_name, :course, :applied_at, :course_year
  def initialize(email, register, full_name, course, applied_at, course_year)
    @email = email
    @register = register
    @full_name = full_name
    @course = course
    @course_year = course_year
    @applied_at = applied_at
  end
end
attendees = []
CSV.foreach('Agosto_Cadastro_DL.csv', headers: true, header_converters: :symbol) do |row|
  attendees << Attendee.new(row[:email_address], row[:matricula], row[:nome_completo], 
    row[:curso], row[:timestamp], row[:course_year])
end

puts attendees.map(&:email)
attendees.each do |attendee|
  qrcode = RQRCode::QRCode.new("#{attendee.register}\n #{attendee.full_name} \n #{attendee.course}")
  image = qrcode.as_png(size: 280)
  IO.write("./dl-aug-qrcodes/#{attendee.register}-qrcode.png", image.to_s)
  
  img = Magick::Image.read("./dl-aug-qrcodes/#{attendee.register}-qrcode.png").first
  my_text = "#{attendee.full_name} \n #{attendee.register} - #{attendee.course}"
  copyright = Magick::Draw.new
  copyright.annotate(img, 0, 0, 8, 12, my_text) do
   self.font = 'Helvetica'
   self.pointsize = 12
   self.font_weight = Magick::BoldWeight
   self.fill = 'black'
  end
  img.write("./dl_aug_qrcodes_badges/#{attendee.register}-qrcode.png")
end