Class: Item::AmazonFnskuBarcode

Inherits:
BaseService show all
Defined in:
app/services/item/amazon_fnsku_barcode.rb

Overview

This will generate a FNSKU Barcode
30336 compatible Dymo labels (2.125" x 1") - This is paper size 'w72h154' in PrintNode
To make this work you will need a Dymo labelwriter 400 series with the right label and the PrintNode server running

  1. Go to localhost:631, manage printers, select the dymo
  2. Select "Set Default options"
  3. Select Media Size 30336, Continuous paper: false, output resolution 300x600, print quality barcode and graphics, media source auto
  4. In print node options, next to the printer, page width set to 1.0, page height set to 2.13

Defined Under Namespace

Classes: Result

Instance Method Summary collapse

Methods inherited from BaseService

#initialize, #log_debug, #log_error, #log_info, #log_warning, #logger, #options, #tagged_logger

Constructor Details

This class inherits a constructor from BaseService

Instance Method Details

#process(fnsku, file_path: nil, output_format: nil, xdim: 2, height: 50) ⇒ Object 



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# File 'app/services/item/amazon_fnsku_barcode.rb', line 15

def process(fnsku, file_path: nil, output_format: nil, xdim: 2, height: 50)
  require 'barby'
  require 'barby/barcode/code_128'
  require 'barby/outputter/png_outputter'

  output_format ||= :png

  return Result.new(success: false, message: "Unsupported format: #{output_format}, only png supported at this time") unless output_format == :png
  return Result.new(success: false, message: "Invalid FNSKU #{AmazonFnskuValidator::MESSAGE}") unless AmazonFnskuValidator.valid?(fnsku)

  barcode = Barby::Code128B.new(fnsku)

  outputter = Barby::PngOutputter.new(barcode)
  outputter.height = height  # Set the height of the barcode (in pixels)
  outputter.xdim = xdim      # Set the width of each bar

  barcode_output = outputter.to_png

  return Result.new(success: true, output: barcode_output, fnsku:, output_format:, identifier_type: 'FNSKU', identifier_formatted: fnsku) unless file_path

  File.open(file_path, 'wb') do |f|
    f.write barcode_output
    f.flush
    f.fsync
  end
  Result.new(success: true, output: file_path, fnsku:, output_format:)
end