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fab-manager/app/pdfs/pdf/invoice.rb

205 lines
7.8 KiB
Ruby

# frozen_string_literal: true
# Generate a downloadable PDF file for the recorded invoice
class Pdf::Invoice < Prawn::Document
require 'stringio'
include ActionView::Helpers::NumberHelper
include ApplicationHelper
# @param invoice [Invoice]
def initialize(invoice)
super(margin: 70)
# fonts
opensans = Rails.root.join('vendor/assets/fonts/OpenSans-Regular.ttf').to_s
opensans_bold = Rails.root.join('vendor/assets/fonts/OpenSans-Bold.ttf').to_s
opensans_bolditalic = Rails.root.join('vendor/assets/fonts/OpenSans-BoldItalic.ttf').to_s
opensans_italic = Rails.root.join('vendor/assets/fonts/OpenSans-Italic.ttf').to_s
font_families.update(
'Open-Sans' => {
normal: { file: opensans, font: 'Open-Sans' },
bold: { file: opensans_bold, font: 'Open-Sans-Bold' },
italic: { file: opensans_italic, font: 'Open-Sans-Oblique' },
bold_italic: { file: opensans_bolditalic, font: 'Open-Sans-BoldOblique' }
}
)
# logo
img_b64 = Setting.get('invoice_logo')
begin
image StringIO.new(Base64.decode64(img_b64)), fit: [415, 40]
rescue StandardError => e
Rails.logger.error "Unable to decode invoice logo from base64: #{e}"
end
move_down 20
font('Open-Sans', size: 10) do
# general information
text I18n.t(invoice.is_a?(Avoir) ? 'invoices.refund_invoice_reference' : 'invoices.invoice_reference',
**{ REF: invoice.reference }), leading: 3
text I18n.t('invoices.code', **{ CODE: Setting.get('invoice_code-value') }), leading: 3 if Setting.get('invoice_code-active')
if invoice.main_item&.object_type != WalletTransaction.name
text I18n.t('invoices.order_number', **{ NUMBER: invoice.order_number }), leading: 3
end
if invoice.is_a?(Avoir)
text I18n.t('invoices.refund_invoice_issued_on_DATE', **{ DATE: I18n.l(invoice.avoir_date.to_date) })
else
text I18n.t('invoices.invoice_issued_on_DATE', **{ DATE: I18n.l(invoice.created_at.to_date) })
end
# user/organization's information
name = Invoices::RecipientService.name(invoice)
others = Invoices::RecipientService.organization_data(invoice)
address = Invoices::RecipientService.address(invoice)
text_box "<b>#{name}</b>\n#{invoice.invoicing_profile.email}\n#{address}\n#{others&.join("\n")}",
at: [bounds.width - 180, bounds.top - 49],
width: 180,
align: :right,
inline_format: true
# object
move_down 28
text "#{I18n.t('invoices.object')} #{Invoices::LabelService.build(invoice)}"
# details table of the invoice's elements
move_down 20
text I18n.t('invoices.order_summary'), leading: 4
move_down 2
data = [[I18n.t('invoices.details'), I18n.t('invoices.amount')]]
total_calc = 0
total_ht = 0
total_vat = 0
# going through invoice_items
invoice.invoice_items.each do |item|
price = item.amount.to_i / 100.00
data += [[Invoices::ItemLabelService.build(invoice, item), number_to_currency(price)]]
total_calc += price
total_ht += item.net_amount
total_vat += item.vat
end
## subtract the coupon, if any
unless invoice.coupon_id.nil?
cp = invoice.coupon
coupon_service = CouponService.new
total_without_coupon = coupon_service.invoice_total_no_coupon(invoice)
discount = (total_without_coupon - invoice.total) / 100.00
total_calc -= discount
# discount textual description
literal_discount = cp.percent_off
literal_discount = number_to_currency(cp.amount_off / 100.00) if cp.type == 'amount_off'
# add a row for the coupon
data += [[_t('invoices.coupon_CODE_discount_of_DISCOUNT',
CODE: cp.code,
DISCOUNT: literal_discount,
TYPE: cp.type), number_to_currency(-discount)]]
end
# total verification
total = invoice.total / 100.00
Rails.logger.error "totals are NOT equals => expected: #{total}, computed: #{total_calc}" if total_calc != total
# TVA
vat_service = VatHistoryService.new
vat_rate_group = vat_service.invoice_vat(invoice)
if total_vat.zero?
data += [[I18n.t('invoices.total_amount'), number_to_currency(total)]]
else
data += [[I18n.t('invoices.total_including_all_taxes'), number_to_currency(total)]]
vat_rate_group.each do |_type, rate|
data += [[I18n.t('invoices.including_VAT_RATE',
**{ RATE: rate[:vat_rate],
AMOUNT: number_to_currency(rate[:amount] / 100.00),
NAME: Setting.get('invoice_VAT-name') }),
number_to_currency(rate[:total_vat] / 100.00)]]
end
data += [[I18n.t('invoices.including_total_excluding_taxes'), number_to_currency(total_ht / 100.00)]]
data += [[I18n.t('invoices.including_amount_payed_on_ordering'), number_to_currency(total)]]
# checking the round number
rounded = (sprintf('%.2f', total_vat / 100.00).to_f + sprintf('%.2f', total_ht / 100.00).to_f).to_s
if rounded != sprintf('%.2f', total_calc)
Rails.logger.error 'rounding the numbers cause an invoice inconsistency. ' \
"Total expected: #{sprintf('%.2f', total_calc)}, total computed: #{rounded}"
end
end
# display table
table(data, header: true, column_widths: [400, 72], cell_style: { inline_format: true }) do
row(0).font_style = :bold
column(1).style align: :right
if total_vat != 0
# Total incl. taxes
row(-1).style align: :right
row(-1).background_color = 'E4E4E4'
row(-1).font_style = :bold
vat_rate_group.size.times do |i|
# including VAT xx%
row(-2 - i).style align: :right
row(-2 - i).background_color = 'E4E4E4'
row(-2 - i).font_style = :italic
end
# including total excl. taxes
row(-3 - vat_rate_group.size + 1).style align: :right
row(-3 - vat_rate_group.size + 1).background_color = 'E4E4E4'
row(-3 - vat_rate_group.size + 1).font_style = :italic
# including amount payed on ordering
row(-4 - vat_rate_group.size + 1).style align: :right
row(-4 - vat_rate_group.size + 1).background_color = 'E4E4E4'
row(-4 - vat_rate_group.size + 1).font_style = :bold
end
end
# optional description for refunds
move_down 20
text invoice.description if invoice.is_a?(Avoir) && invoice.description
# payment details
move_down 20
text Invoices::PaymentDetailsService.build(invoice, total)
# important information
move_down 40
txt = parse_html(Setting.get('invoice_text').to_s)
txt.each_line do |line|
text line, style: :bold, inline_format: true
end
# address and legals information
move_down 40
txt = parse_html(Setting.get('invoice_legals').to_s)
txt.each_line do |line|
text line, align: :right, leading: 4, inline_format: true
end
end
# factice watermark
return unless %w[staging test development].include?(invoice.environment)
transparent(0.1) do
rotate(45, origin: [0, 0]) do
image Rails.root.join("app/pdfs/data/watermark-#{I18n.default_locale}.png"), at: [90, 150]
end
end
end
private
##
# Remove every unsupported html tag from the given html text (like <p>, <span>, ...).
# The supported tags are <b>, <u>, <i> and <br>.
# @param html [String] single line html text
# @return [String] multi line simplified html text
##
def parse_html(html)
ActionController::Base.helpers.sanitize(html, tags: %w[b u i br])
end
end