Framework CCCS page

commands/create-flyer.rb

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+usage       'create-flyer eventnode [outputdir]'
+aliases     :cf
+summary     'creates svg for flyer'
+description 'Create SVG file with content of given event'
+
+
+class CreateFlyer < ::Nanoc::CLI::CommandRunner
+  require 'rqrcode_png'
+  require 'pathname'
+
+  def get_qr(data)
+    qr = nil
+    size = 7
+    while (!qr)
+      begin
+        qr = RQRCode::QRCode.new(data, :size => size, :level => :l)
+      rescue RQRCode::QRCodeRunTimeError
+        qr = nil
+        size = size + 1
+      end
+    end
+    qr
+  end
+
+  def create_svg(template_name, output_name, data)
+    # Read template
+    file = File.open(template_name, "r:UTF-8")
+    template = file.read
+    file.close()
+    # Replace in template
+    template.gsub!('${title}', data[:title])
+    template.gsub!('${date}', data[:date].strftime("%d.%m.%Y, %H:%M"))
+    template.gsub!('${speakers}', data[:speakers].join(', '))
+    template.gsub!('${location.name}', data[:location_name].join(", "))
+    template.gsub!('${location.address}', data[:location_address].join(", "))
+    template.gsub!('${location.geo}', data[:location_geo])
+    template.gsub!('${qrcode}', "#{data[:qr_img].to_data_url}")
+    for i in 0..5 do
+      template.gsub!("${calendar.#{i}}", data[:calendar][i] || "")
+    end
+    # Output
+    File.open(output_name, 'w:UTF-8') {|f| f.write(template) }
+  end
+
+  def svg_to_pdf(svg_name, pdf_name)
+    system("inkscape -A #{pdf_name} #{svg_name}")
+  end
+
+  def allow_creation(filename)
+    if File.exist?(filename)
+      puts "Skipping creation of #{filename} (file already exists)"
+      false
+    else
+      true
+    end
+  end
+
+  def run
+    # Check arguments
+    if arguments.length<1
+      puts command.help
+      exit 1
+    end
+    # Get node, check type
+    self.load_site
+    nodename = sanitize_path(arguments[0])
+    event = self.site.items[nodename]
+    if !event
+      puts "Node #{nodename} not found"
+      exit 1
+    end
+    if !event[:kind]=='event'
+      puts "Node #{nodename} is not an event"
+      exit 1
+    end
+    # Get output dir
+    outputdir = if arguments.length>1
+                  Pathname.new(arguments[1])
+                else
+                  Pathname.new(event.attributes[:filename]).dirname
+                end
+    # Collect data
+    merge_item_location_data(event[:location], self.site.items['/_data/locations/'].attributes)
+    calculate_to_date(event)
+    self.site.compile
+    data = {}
+    data[:title] = event[:title]
+    data[:date] = event[:startdate]
+    data[:speakers] = event[:speakers].map { |s| if s[:affiliation] then "#{s[:name]} (#{s[:affiliation]})" else s[:name] end }
+    text = Nokogiri::HTML(event.compiled_content)
+    data[:text] = text.content.gsub(/\n+/,"\n")
+    data[:location_name] = [event[:location][:name]]
+    if (event[:location][:details])
+      data[:location_name] << event[:location][:details]
+    end
+    data[:location_address] = []
+    if (event[:location][:strasse])
+      data[:location_address] << event[:location][:strasse]
+    end
+    if (event[:location][:ort])
+      if (event[:location][:plz])
+        data[:location_address] << "#{event[:location][:plz]} #{event[:location][:ort]}"
+      else
+        data[:location_address] << event[:location][:ort]
+      end
+    end
+    data[:location_geo] = if (event[:location][:lon])
+                     "N #{event[:location][:lon]} E #{event[:location][:lat]}"
+                   else
+                     ""
+                   end
+    calendar_items = self.site.items.select do |i|
+      (i[:kind]=='event') && (i[:startdate].to_datetime>event[:startdate].to_datetime) && !i.identifier.start_with?('/_data/stammtisch/')
+    end.sort { |a,b| a[:startdate].to_datetime <=> b[:startdate].to_datetime }
+    data[:calendar] = calendar_items[0..5].map do |i|
+      if i[:startdate].instance_of?(Date)
+        "#{i[:startdate].strftime("%d.%m.%Y")}: #{i[:title]}"
+      else
+        "#{i[:startdate].strftime("%d.%m.%Y, %H:%M")}h: #{i[:title]}"
+      end
+    end
+    # Generate qr code
+    vevent = []
+    vevent << "BEGIN:VEVENT"
+    vevent << "SUMMARY:#{event[:title]}"
+    vevent << "DTSTART:#{event[:startdate].getutc.strftime("%Y%m%dT%H%M%SZ")}"
+    vevent << "DTEND:#{event[:enddate].getutc.strftime("%Y%m%dT%H%M%SZ")}"
+    vevent << "LOCATION:#{data[:location_name].join(", ")}"
+    vevent << "DESCRIPTION:Weitere Infos: #{site.config[:base_url]}#{event.path()}"
+    vevent << "END:VEVENT"
+    data[:qr_img] = get_qr(vevent.join("\n")).to_img
+    # Filenames
+    aushang_svg = (outputdir + '_aushang.svg').to_s
+    flyer_svg = (outputdir + '_flyer.svg').to_s
+    aushang_pdf = (outputdir + 'aushang.pdf').to_s
+    flyer_pdf = (outputdir + 'flyer.pdf').to_s
+    # Write svgs
+    if allow_creation(aushang_svg)
+      create_svg(self.site.items['/_data/aushang/'].raw_filename(), aushang_svg, data)
+    end
+    if allow_creation(flyer_svg)
+      create_svg(self.site.items['/_data/flyer/'].raw_filename(), flyer_svg, data)
+    end
+    # Create pdfs
+    if allow_creation(aushang_pdf)
+      svg_to_pdf(aushang_svg, aushang_pdf)
+    end
+    if allow_creation(flyer_pdf)
+      svg_to_pdf(flyer_svg, flyer_pdf)
+    end
+  end
+end
+
+runner CreateFlyer
+