109 lines
3.2 KiB
Ruby
109 lines
3.2 KiB
Ruby
require 'rubygems'
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require 'sinatra'
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require 'rqrcode'
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require 'prawn'
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require 'prawn/measurements'
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require 'prawn/qrcode'
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require 'prawn-svg'
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require 'color'
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require 'excon'
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require 'rmagick'
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require 'json'
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require 'zlib'
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require 'shellwords'
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include Prawn::Measurements
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BACKEND_URL = ENV.fetch('LABELMAKER_BACKEND_URL', 'https://inventory.hackerspace.pl/api/1/')
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CODE_PREFIX = ENV.fetch('LABELMAKER_CODE_PREFIX', 'https://inventory.hackerspace.pl/')
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# NOTE:
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# DYMO_LABEL_SIZE = [89, 36]
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# ZEBRA_LABEL_SIZE = [100, 60]
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LABEL_SIZE = JSON.parse(ENV.fetch('LABELMAKER_LABEL_SIZE', '[89, 36]'))
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# NOTE: You can use either local printer or IPP printer, but not both
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LOCAL_PRINTER_NAME = ENV.fetch('LABELMAKER_LOCAL_PRINTER_NAME', 'DYMO_LabelWriter_450')
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IPP_PRINTER_URL = ENV.fetch('LABELMAKER_IPP_PRINTER_URL', '')
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DEBUG_JSON = ENV["LABELMAKER_DEBUG_JSON"]
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def api(uri)
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if DEBUG_JSON
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JSON.parse(DEBUG_JSON)
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else
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JSON.parse(Excon.get(BACKEND_URL + uri + "/"))
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end
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end
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def render_label(item_or_label_id, size: LABEL_SIZE)
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item = api("items/#{item_or_label_id}")
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pdf = Prawn::Document.new(page_size: size.map { |x| mm2pt(x) },
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margin: [2, 2, 2, 6].map { |x| mm2pt(x) }) do
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font_families.update("DejaVuSans" => {
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normal: "fonts/DejaVuSans.ttf",
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italic: "fonts/DejaVuSans-Oblique.ttf",
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bold: "fonts/DejaVuSans-Bold.ttf",
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bold_italic: "fonts/DejaVuSans-BoldOblique.ttf"
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})
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font 'DejaVuSans'
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# Width of right side
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qr_size = [bounds.height / 2, 27].max
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# Right side
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bounding_box([bounds.right - qr_size, bounds.top], width: qr_size) do
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print_qr_code CODE_PREFIX + item['short_id'], stroke: false,
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foreground_color: '000000',
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extent: bounds.width, margin: 0, pos: bounds.top_left
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owner_text = item["owner"] ? "owner: #{item['owner']}\n\n" : ""
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metadata_text = owner_text # todo: creation date?
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text_box metadata_text,
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at: [bounds.right - qr_size, -7], size: 8, align: :right, overflow: :shrink_to_fit
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end
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# Left side
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bounding_box(bounds.top_left, width: bounds.width - qr_size) do
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text_box item['name'],
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size: 40, align: :center, valign: :center, width: bounds.width-10,
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inline_format: true, overflow: :shrink_to_fit, disable_wrap_by_char: true
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end
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end
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pdf.render
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end
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set :bind, '0.0.0.0'
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get '/api/1/preview/:id.pdf' do
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headers["Content-Type"] = "application/pdf; charset=utf8"
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render_label params["id"]
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end
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get '/api/1/preview/:id.png' do
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headers["Content-Type"] = "image/png"
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img = Magick::ImageList.new()
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img = img.from_blob(render_label(params["id"])){ self.density = 200 }.first
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img.format = 'png'
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img.background_color = 'white'
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img.to_blob
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end
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post '/api/1/print/:id' do
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temp = Tempfile.new('labelmaker')
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temp.write(render_label(params["id"]))
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temp.close
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if not LOCAL_PRINTER_NAME.empty?
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system("lpr -P #{LOCAL_PRINTER_NAME.shellescape} #{temp.path.shellescape}")
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elsif not IPP_PRINTER_URL.empty?
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system("ipptool -v -tf #{temp.path.shellescape} -d filetype=application/octet-stream -I #{IPP_PRINTER_URL.shellescape} ipptool-print-job.test")
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else
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status 404
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return "No printer configured"
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end
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end
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