# frozen_string_literal: true

class BlankContract
  def initialize(releasable, copies = 1)
    @releasable = releasable
    integer_number_of_copies = copies.to_i
    @copies = integer_number_of_copies.positive? ? integer_number_of_copies : 1
  end

  def to_pdf
    kit = PDFKit.new(as_html, margin_right: 1, margin_left: 1, margin_top: 10, margin_bottom: 1)
    kit.to_file("tmp/#{filename}")
  end

  def filename
    "blank_#{contract_template.release_type}_release.pdf"
  end

  def render_attributes
    attributes = {
      layout: 'contract_pdf',
      template: 'blank_contracts/pdf',
      locals: { releasable: @releasable, contract_template: contract_template, copies: @copies }
    }
    add_logo_to_attributes attributes
    add_codes_to_attributes attributes
    attributes
  end

  private

  def contract_template
    @releasable.contract_template
  end

  def project
    @releasable.project
  end

  def locale
    @releasable.locale
  end

  def as_html
    I18n.with_locale(locale) do
      ApplicationController.render render_attributes
    end
  end

  def add_logo_to_attributes(attributes)
    logo = @releasable.project.account.logo
    attributes[:locals][:logo] = logo if logo.attached?
  end

  def add_codes_to_attributes(attributes)
    attributes[:locals][:qr_codes] = []
    attributes[:locals][:serial_numbers] = []

    @copies.times do
      random_number = SecureRandom.hex 4
      custom_url = "#{contract_template.to_global_id.to_s}/#{random_number}"
      qr_code = QrCode.new(custom_url)

      attributes[:locals][:qr_codes] << qr_code.to_base64_png
      attributes[:locals][:serial_numbers] << random_number.to_s
    end
  end
end