mgroebner/application_helper.rb

## application_helper.rb
module ApplicationHelper

  def tickaroo_button(opts)
    opts[:button_type] ||= :default
    sig = TikButtonSignature.new.signature(opts)
    s = ""
    s += "width='#{opts[:width]}' " if opts[:width].present?
    s += "height='#{opts[:height]}' " if opts[:height].present?
    s += "lang='#{opts[:lang]}' " if opts[:lang].present?
    s += "data-title='#{opts[title]}' " if opts[:title].present?
    s += "data-home-team='#{opts[:home_team]}' " if opts[:home_team].present?
    s += "data-away-team='#{opts[:away_team]}' " if opts[:away_team].present?
    s += "data-starts-at='#{opts[:starts_at]}' " if opts[:starts_at].present?
    s += "data-tournament='#{opts[:tournament]}' " if opts[:tournament].present?
    s += "data-sportstype='#{opts[:sportstype]}' " if opts[:sportstype].present?
    s += "data-lanme='#{opts[:lanme]}' " if opts[:lanme].present?
    s += "data-laddress='#{opts[:laddress]}' " if opts[:laddress].present?
    s += "data-lcity='#{opts[:lcity]}' " if opts[:lcity].present?
    s += "data-lzip='#{opts[:lzip]}' " if opts[:lzip].present?
    s += "data-external-id='#{opts[:external_id]}' " if opts[:external_id].present?
    s += "data-auth-token='#{opts[:auth_token]}' " if opts[:auth_token].present?
    s += "data-auth-signature='#{sig}'"

    if opts[:button_type] == :score
      "<a class='tickaroo-score-button' #{s}></a>".html_safe
    else
      "<a class='tickaroo-button' #{s}></a>".html_safe
    end
  end

end


## tik_button_signatur.rb
class TikButtonSignature

  VALID_PARAMS = [:title, :away_team, :home_team, :starts_at, :tournament, :sportstype, :lname, :laddress, :lcity, :lzip, :external_id, :auth_token]
  CLIENT_SECRET = 'abc123'

  attr_accessor :client_secret

  def initialize(options = {})
    @client_secret = options[:client_secret] || CLIENT_SECRET
  end

  def signature(params)
    calculate_signature(params)
  end

  private

  def calculate_signature(params)
    encoded_parameter = params.collect{|i| [escape(i[0]).gsub('_', '-'), escape(i[1])] if VALID_PARAMS.include?(i[0])}.compact.sort
    s = ""
    encoded_parameter.each do |p|
      s << '&' if s.present?
      s << "#{p[0]}=#{p[1]}"
    end
    sign(client_secret, s)
  end

  def sign( key, base_string )
    digest = OpenSSL::Digest::Digest.new( 'sha1' )
    OpenSSL::HMAC.hexdigest( digest, key, base_string  )
  end

  def escape(value)
    OAuth::Helper.escape(value)
  end

end

## view.html.erb
<!DOCTYPE html>
...
<%= tickaroo_button(:width => '120', :height => '32', :home_team => "FC Bayern", :away_team => "Dortmund", :starts_at => "#{(Time.now+2.weeks).to_i}", :sportstype => "soccer", :external_id => "123") %>
...

<script>(function(e,j,i,h,f,c,b){e[f]=e[f]||function(){(e[f].q=e[f].q||[]).push(arguments)},e[f].l=1*new Date();c=j.createElement(i),b=j.getElementsByTagName(i)[0];c.async=1;c.src=h;b.parentNode.insertBefore(c,b)})(window,document,"script","//widgets.tickaroo.com/widgets/tickaroo-button.js","_tbq");_tbq("load");</script>
</body>
</html>
	module ApplicationHelper

	def tickaroo_button(opts)
	opts[:button_type] \|\|= :default
	sig = TikButtonSignature.new.signature(opts)
	s = ""
	s += "width='#{opts[:width]}' " if opts[:width].present?
	s += "height='#{opts[:height]}' " if opts[:height].present?
	s += "lang='#{opts[:lang]}' " if opts[:lang].present?
	s += "data-title='#{opts[title]}' " if opts[:title].present?
	s += "data-home-team='#{opts[:home_team]}' " if opts[:home_team].present?
	s += "data-away-team='#{opts[:away_team]}' " if opts[:away_team].present?
	s += "data-starts-at='#{opts[:starts_at]}' " if opts[:starts_at].present?
	s += "data-tournament='#{opts[:tournament]}' " if opts[:tournament].present?
	s += "data-sportstype='#{opts[:sportstype]}' " if opts[:sportstype].present?
	s += "data-lanme='#{opts[:lanme]}' " if opts[:lanme].present?
	s += "data-laddress='#{opts[:laddress]}' " if opts[:laddress].present?
	s += "data-lcity='#{opts[:lcity]}' " if opts[:lcity].present?
	s += "data-lzip='#{opts[:lzip]}' " if opts[:lzip].present?
	s += "data-external-id='#{opts[:external_id]}' " if opts[:external_id].present?
	s += "data-auth-token='#{opts[:auth_token]}' " if opts[:auth_token].present?
	s += "data-auth-signature='#{sig}'"

	if opts[:button_type] == :score
	"<a class='tickaroo-score-button' #{s}></a>".html_safe
	else
	"<a class='tickaroo-button' #{s}></a>".html_safe
	end
	end

	end
	class TikButtonSignature

	VALID_PARAMS = [:title, :away_team, :home_team, :starts_at, :tournament, :sportstype, :lname, :laddress, :lcity, :lzip, :external_id, :auth_token]
	CLIENT_SECRET = 'abc123'

	attr_accessor :client_secret

	def initialize(options = {})
	@client_secret = options[:client_secret] \|\| CLIENT_SECRET
	end

	def signature(params)
	calculate_signature(params)
	end

	private

	def calculate_signature(params)
	encoded_parameter = params.collect{\|i\| [escape(i[0]).gsub('_', '-'), escape(i[1])] if VALID_PARAMS.include?(i[0])}.compact.sort
	s = ""
	encoded_parameter.each do \|p\|
	s << '&' if s.present?
	s << "#{p[0]}=#{p[1]}"
	end
	sign(client_secret, s)
	end

	def sign( key, base_string )
	digest = OpenSSL::Digest::Digest.new( 'sha1' )
	OpenSSL::HMAC.hexdigest( digest, key, base_string )
	end

	def escape(value)
	OAuth::Helper.escape(value)
	end

	end
	<!DOCTYPE html>
	...
	<%= tickaroo_button(:width => '120', :height => '32', :home_team => "FC Bayern", :away_team => "Dortmund", :starts_at => "#{(Time.now+2.weeks).to_i}", :sportstype => "soccer", :external_id => "123") %>
	...

	<script>(function(e,j,i,h,f,c,b){e[f]=e[f]\|\|function(){(e[f].q=e[f].q\|\|[]).push(arguments)},e[f].l=1*new Date();c=j.createElement(i),b=j.getElementsByTagName(i)[0];c.async=1;c.src=h;b.parentNode.insertBefore(c,b)})(window,document,"script","//widgets.tickaroo.com/widgets/tickaroo-button.js","_tbq");_tbq("load");</script>
	</body>
	</html>