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@ -104,22 +104,6 @@ module Templates
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io
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end
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def modify_pdf_data(original_pdf_data, excluded_page_number)
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pdf = HexaPDF::Document.new(io: StringIO.new(original_pdf_data))
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pdf.pages.delete_at(excluded_page_number)
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modified_pdf_data = StringIO.new
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pdf.write(modified_pdf_data)
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modified_pdf_data.string
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end
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def create_blob_from_data(data, original_blob)
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original_blob.tap do |blob|
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blob.io = StringIO.new(data)
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blob.filename = original_blob.filename
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blob.save!
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end
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end
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def generate_pdf_secured_preview_images(template, attachment, data)
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ActiveStorage::Attachment.where(name: SECURED_ATTACHMENT_NAME, record: attachment).destroy_all
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number_of_pages = PDF::Reader.new(StringIO.new(data)).pages.size - 1
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@ -127,14 +111,6 @@ module Templates
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pdf = Vips::Image.new_from_buffer(data, '', dpi: DPI, page: page_number)
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pdf = pdf.resize(MAX_WIDTH / pdf.width.to_f)
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redacted_boxes = template.fields.select { |field| field['type'] == 'redact' && field['areas'][0]['page'] == page_number }
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deleted_page_field = template.fields.select { |field| field['type'] == 'deleted_page' && field['areas'][0]['page'] == page_number }
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if !deleted_page_field.empty?
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modified_pdf_data = modify_pdf_data(data, page_number)
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attachment.blob = create_blob_from_data(modified_pdf_data, attachment.blob)
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template.fields.delete(deleted_page_field)
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template.save!
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next
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end
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if !redacted_boxes.empty?
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redacted_boxes.each do |box|
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x = (box['areas'][0]['x'] * pdf.width).to_i
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@ -159,62 +135,115 @@ module Templates
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end
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end
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def delete_picture(template, attachment_id, page_number)
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attachment = ActiveStorage::Attachment.find_by(id: attachment_id)
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return unless attachment
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# attachment.purge
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deleted_page_field = {
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'type' => 'deleted_page',
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'areas' => [{
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'x' => 0,
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'y' => 0,
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'w' => 1,
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'h' => 1,
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'attachment_uuid' => SecureRandom.uuid,
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'page' => page_number,
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}]
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}
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template.fields << deleted_page_field
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template.save!
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end
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def upload_new_blank_image(template, document)
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def delete_picture(template, document, image_attachment_id, page_number)
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image_attachment = ActiveStorage::Attachment.find_by(id: image_attachment_id)
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return unless image_attachment
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file_path =
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if document.service.name == :disk
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ActiveStorage::Blob.service.path_for(document.key)
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end
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temp_dir = "#{Rails.root}/tmp/"
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FileUtils.mkdir_p(temp_dir)
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temp_file_path = "#{temp_dir}#{SecureRandom.uuid}.pdf"
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File.open(temp_file_path, 'wb') do |file|
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document.download { |chunk| file.write(chunk) }
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end
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pdf = HexaPDF::Document.open(temp_file_path)
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pdf.pages.delete_at(page_number)
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pdf.write(temp_file_path)
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document.reload
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document.metadata[:pdf]['number_of_pages'] -= 1
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temp_doc = document.metadata
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new_attachment = document.attachments.update!(
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name: document.name,
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uuid: document.uuid,
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blob: ActiveStorage::Blob.create_and_upload!(
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io: File.open(temp_file_path),
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filename: document.blob.filename,
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content_type: document.blob.content_type,
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metadata: temp_doc
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)
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)
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document.blob.purge
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image_attachment.purge
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document.reload
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File.delete(temp_file_path)
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blank_image = generate_blank_image
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blank_blob = create_blob_from_image(blank_image, document )
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# upload_new_attachment(template, blank_blob, ATTACHMENT_NAME)
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# puts '-----New blank image uploaded successfully!-----'
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if blank_blob
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Rails.logger.info('New blank image uploaded successfully!')
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else
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Rails.logger.info('Blank image not uploaded')
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end
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remaining_images = document.preview_images
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remaining_images.each_with_index do |image, index|
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new_filename = "#{index}.jpeg"
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image.blob.update!(filename: new_filename)
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end
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def generate_blank_image
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height = 2000
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Vips::Image.new_from_array([[255]* MAX_WIDTH] * height, 255)
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rescue StandardError => e
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Rails.logger.error("Error uploading new blank image: #{e.message}")
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ensure
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File.delete(temp_file_path) if File.exist?(temp_file_path)
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end
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def create_blob_from_image(image, attachment)
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begin
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previews_count = attachment.preview_images.count
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ActiveStorage::Attachment.create!(
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def upload_new_blank_image(template, document)
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file_path =
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if document.service.name == :disk
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ActiveStorage::Blob.service.path_for(document.key)
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end
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temp_dir = "#{Rails.root}/tmp/"
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FileUtils.mkdir_p(temp_dir)
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temp_file_path = "#{temp_dir}#{SecureRandom.uuid}.pdf"
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File.open(temp_file_path, 'wb') do |file|
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document.download { |chunk| file.write(chunk) }
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end
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pdf = HexaPDF::Document.open(temp_file_path)
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pdf.pages.add
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pdf.write(temp_file_path)
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document.reload
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document.metadata[:pdf]['number_of_pages'] += 1
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temp_doc = document.metadata
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new_attachment = document.attachments.update!(
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name: document.name,
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uuid: document.uuid,
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blob: ActiveStorage::Blob.create_and_upload!(
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io: StringIO.new(image.write_to_buffer(FORMAT, Q: Q, interlace: true)),
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filename: "#{previews_count}#{FORMAT}",
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metadata: { analyzed: true, identified: true, width: image.width, height: image.height }
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),
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name: ATTACHMENT_NAME,
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record: attachment
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io: File.open(temp_file_path),
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filename: document.blob.filename,
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content_type: document.blob.content_type,
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metadata: temp_doc
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)
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rescue => e
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Rails.logger.error("Error creating blob from image: #{e.message}")
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end
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end
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)
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document.blob.purge
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document.reload
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# to update pdf images in storage blob
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self.generate_pdf_preview_images(document, document.blob.download)
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File.delete(temp_file_path)
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rescue StandardError => e
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Rails.logger.error("Error uploading new blank image: #{e.message}")
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ensure
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File.delete(temp_file_path) if File.exist?(temp_file_path)
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end
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# def generate_blank_image
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# # here height and width should be equal to height and width from existing pdf pages
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# height = 2000
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# width = MAX_WIDTH
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# Vips::Image.new_from_array([[255]* width] * height, 255)
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# end
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# # def create_blob_from_image(image, attachment)
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# def create_image_blob(image, attachment)
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# begin
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# previews_count = attachment.preview_images.count
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# ActiveStorage::Attachment.create!(
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# blob: ActiveStorage::Blob.create_and_upload!(
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# io: StringIO.new(image.write_to_buffer(FORMAT, Q: Q, interlace: true)),
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# filename: "#{previews_count}#{FORMAT}",
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# metadata: { analyzed: true, identified: true, width: image.width, height: image.height }
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# ),
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# name: ATTACHMENT_NAME,
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# record: attachment
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# )
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# rescue => e
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# Rails.logger.error("Error creating blob from image: #{e.message}")
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# end
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# end
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end
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end
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iozeey
2 years ago