annotation-sample.rb

get '/annotation-sample' do
  haml :annotation_sample
end

post '/annotation-sample' do
  set :client_id, params[:client_id]
  set :private_key, params[:private_key]

  set :email, params[:email]
  set :first_name, params[:first_name]
  set :last_name, params[:last_name]
  set :file_name, params[:file_name]

  begin
    raise 'Please enter all required parameters' if settings.client_id.empty? or settings.private_key.empty? or settings.file_name.empty?

    GroupDocs.configure do |groupdocs|
      groupdocs.client_id = params[:client_id]
      groupdocs.private_key = params[:private_key]
      groupdocs.api_server = 'https://api.groupdocs.com'
    end

    metadata = GroupDocs::Document.metadata!(settings.file_name)
    document = GroupDocs::Storage::File.new(id: metadata.id, guid: metadata.guid).to_document

    user = GroupDocs::User.new
    user.nickname = settings.email
    user.primary_email = settings.email
    user.first_name = settings.first_name
    user.last_name = settings.last_name
    user = GroupDocs::User.update_account!(user)

    document.add_collaborator! user unless document.collaborators!.any? { |c| c.guid == user.guid }

    annotation = true # looks like "IsAnnotation" is some helper method so I stub it here
    url = if annotation
            "/document-annotation2/embed?quality=50&guid=#{document.file.guid}&uid=#{user.guid}&download=True"
          else
            "/document-viewer/embed?quality=50&guid=#{document.file.guid}&uid=#{user.guid}&download=True"
          end

    iframe = "<iframe src='https://apps.groupdocs.com#{url}' frameborder='0' width='720' height='600'></iframe>"
  rescue Exception => e
    err = e.message
  end

  haml :annotation_sample, :locals => {:client_id => settings.client_id, :private_key => settings.private_key, :err => err, :file_name => settings.file_name, :email => settings.email, :first_name => settings.first_name, :last_name => settings.last_name, :iframe => iframe}
end