Class: MWS::FBA::ShippingLabel

Inherits:
Object
  • Object
show all
Defined in:
lib/mws/fba_label.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args = {}) ⇒ ShippingLabel

Returns a new instance of ShippingLabel.



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# File 'lib/mws/fba_label.rb', line 27

def initialize(args={})
  args.each { |k, v| send("#{k}=", v) }

  AWS::S3::Base.establish_connection!(
    :access_key_id => @access_key_id,
    :secret_access_key => @secret_access_key
  )
  upload
end

Instance Attribute Details

#access_key_id ⇒ Object

Returns the value of attribute access_key_id.



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# File 'lib/mws/fba_label.rb', line 25

def access_key_id
  @access_key_id
end

#bucket ⇒ Object

Returns the value of attribute bucket.



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# File 'lib/mws/fba_label.rb', line 25

def bucket
  @bucket
end

#secret_access_key ⇒ Object

Returns the value of attribute secret_access_key.



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# File 'lib/mws/fba_label.rb', line 25

def secret_access_key
  @secret_access_key
end

#ship_from_address ⇒ Object

Returns the value of attribute ship_from_address.



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# File 'lib/mws/fba_label.rb', line 25

def ship_from_address
  @ship_from_address
end

#ship_to_address ⇒ Object

Returns the value of attribute ship_to_address.



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# File 'lib/mws/fba_label.rb', line 25

def ship_to_address
  @ship_to_address
end

#shipment_id ⇒ Object

Returns the value of attribute shipment_id.



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# File 'lib/mws/fba_label.rb', line 25

def shipment_id
  @shipment_id
end

#template_url ⇒ Object

Returns the value of attribute template_url.



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# File 'lib/mws/fba_label.rb', line 25

def template_url
  @template_url
end

#url ⇒ Object

Returns the value of attribute url.



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# File 'lib/mws/fba_label.rb', line 25

def url
  @url
end

Instance Method Details

#build_pdf ⇒ Object

Build PDF document and return Prawn::Document, ready to be saved locally or uploaded to S3



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# File 'lib/mws/fba_label.rb', line 40

def build_pdf
  Prawn::Document.new(:template => open(@template_url)) do |pdf|
    
    common_options = {
      :width => 200,
      :height => 50,
      :align => :left,
      :valign => :top,
      :overflow => :shrink_to_fit,
    }
    # print from address
    pdf.font "Helvetica", :size => 8
    pdf.text_box(@ship_from_address, common_options.merge({:at => [375,498]}))

    # print to address
    pdf.font "Helvetica", :style => :bold, :size => 11
    pdf.text_box(@ship_to_address, common_options.merge({:at => [540,498], :height => 40}))

    # print shipment ID
    pdf.font "Helvetica", :style => :bold, :size => 11
    puts pdf.text_box(@shipment_id, common_options.merge({
      :width    => 170,
      :height   => 16,
      :align    => :center,
      :at       => [455,374],
    }))

    # Generate barcode, store on s3, insert into pdf from S3
    barcode_png = Barby::Code128A.new(@shipment_id).to_png(:height => 50, :margin => 0)
    barcode_filename = "barcode_#{@shipment_id}.png"
    AWS::S3::S3Object.store(barcode_filename, barcode_png, @bucket)
    barcode_url = AWS::S3::S3Object.url_for(barcode_filename, @bucket, :expires_in => 3600)
    pdf.image open(barcode_url), :at => [470,430]
  end

end

#upload ⇒ Object 



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# File 'lib/mws/fba_label.rb', line 77

def upload
  filename = "FBA_label_#{@shipment_id}.pdf"
  AWS::S3::S3Object.store(filename, build_pdf.render, @bucket)
  @url = AWS::S3::S3Object.url_for(filename, @bucket, :expires_in => 3600)
end