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docuseal/lib/submissions/generate_result_attachments.rb

126 lines
5.1 KiB

# frozen_string_literal: true
module Submissions
module GenerateResultAttachments
FONT_SIZE = 12
FONT_NAME = 'Helvetica'
module_function
# rubocop:disable Metrics
def call(submission)
cert = submission.template.account.encrypted_configs
.find_by(key: EncryptedConfig::ESIGN_CERTS_KEY).value
zip_file = Tempfile.new
zip_stream = Zip::ZipOutputStream.open(zip_file)
pdfs_index =
submission.template.documents.to_h do |attachment|
[attachment.uuid, HexaPDF::Document.new(io: StringIO.new(attachment.download))]
end
submission.template.fields.each do |field|
field.fetch('areas', []).each do |area|
pdf = pdfs_index[area['attachment_uuid']]
page = pdf.pages[area['page']]
width = page.box.width
height = page.box.height
value = submission.values[field['uuid']]
canvas = page.canvas(type: :overlay)
case field['type']
when 'image', 'signature'
attachment = submission.attachments.find { |a| a.uuid == value }
io = StringIO.new(attachment.download)
Vips::Image.new_from_buffer(io.read, '')
scale = [(area['w'] * width) / attachment.metadata['width'],
(area['h'] * height) / attachment.metadata['height']].min
canvas.image(io, at: [area['x'] * width,
height - (area['y'] * height) -
(((attachment.metadata['height'] * scale) + (area['h'] * height)) / 2)],
width: attachment.metadata['width'] * scale,
height: attachment.metadata['height'] * scale)
when 'attachment'
Array.wrap(value).each_with_index do |uuid, index|
attachment = submission.attachments.find { |a| a.uuid == uuid }
canvas.image(PdfIcons.paperclip_io,
at: [area['x'] * width,
height - ((area['y'] * height) + (1.2 * FONT_SIZE) - (FONT_SIZE * index))],
width: FONT_SIZE, height: FONT_SIZE)
canvas.font(FONT_NAME, size: FONT_SIZE)
canvas.text(attachment.filename.to_s,
at: [(area['x'] * width) + FONT_SIZE,
height - ((area['y'] * height) + FONT_SIZE - (FONT_SIZE * index))])
page[:Annots] ||= []
page[:Annots] << pdf.add({
Type: :Annot, Subtype: :Link,
Rect: [
area['x'] * width,
height - (area['y'] * height),
(area['x'] * width) + (area['w'] * width),
height - (area['y'] * height) - FONT_SIZE
],
A: { Type: :Action, S: :URI, URI: attachment.url }
})
end
when 'checkbox'
Array.wrap(value).each_with_index do |value, index|
canvas.image(PdfIcons.check_io,
at: [area['x'] * width,
height - ((area['y'] * height) + (1.2 * FONT_SIZE) - (FONT_SIZE * index))],
width: FONT_SIZE, height: FONT_SIZE)
canvas.font(FONT_NAME, size: FONT_SIZE)
canvas.text(value,
at: [(area['x'] * width) + FONT_SIZE,
height - ((area['y'] * height) + FONT_SIZE - (FONT_SIZE * index))])
end
when 'date'
canvas.font(FONT_NAME, size: FONT_SIZE)
canvas.text(I18n.l(Date.parse(value)), at: [area['x'] * width, height - ((area['y'] * height) + FONT_SIZE)])
else
canvas.font(FONT_NAME, size: FONT_SIZE)
canvas.text(value.to_s, at: [area['x'] * width, height - ((area['y'] * height) + FONT_SIZE)])
end
end
end
submission.template.schema.map do |item|
document = submission.template.documents.find { |a| a.uuid == item['attachment_uuid'] }
io = StringIO.new
pdf = pdfs_index[item['attachment_uuid']]
pdf.sign(io, reason: "Signed by #{submission.email}",
# doc_mdp_permissions: :no_changes,
certificate: OpenSSL::X509::Certificate.new(cert['cert']),
key: OpenSSL::PKey::RSA.new(cert['key']),
certificate_chain: [OpenSSL::X509::Certificate.new(cert['sub_ca']),
OpenSSL::X509::Certificate.new(cert['root_ca'])])
zip_stream.put_next_entry("#{item['name']}.pdf")
zip_stream.write(io.string)
submission.documents.attach(io: StringIO.new(io.string), filename: document.filename)
end
zip_stream.close
submission.archive.attach(io: zip_file, filename: "#{submission.template.name}.zip")
end
# rubocop:enable Metrics
end
end