Class: LtiBoxEngine::LtiController

Inherits:
ApplicationController show all
Defined in:
app/controllers/lti_box_engine/lti_controller.rb

Instance Method Summary collapse

Methods inherited from ApplicationController

#cors_preflight_check, #cors_set_access_control_headers, #set_default_headers

Instance Method Details

#embed ⇒ Object 



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# File 'app/controllers/lti_box_engine/lti_controller.rb', line 30

def embed
  item = params[:item]
  lti_launch = LtiLaunch.where(id: params[:lti_launch_id]).first
  launch_params = lti_launch.payload

  tp = IMS::LTI::ToolProvider.new(nil, nil, launch_params)
  tp.extend IMS::LTI::Extensions::Content::ToolProvider
  
  if tp.accepts_content?
    if tp.accepts_file?(item['name']) && item['type'] != 'folder'
      redirect_url = tp.file_content_return_url(item['url'], item['name'])
      render json: { redirect_url: redirect_url } and return
    elsif tp.accepts_url?
      # The URL will be to a folder. We need to modify it to load the embed widget
      redirect_url = tp.url_content_return_url(Client.box_url_to_box_embed_url(item['url']), item['name'], item['name'])
      render json: { redirect_url: redirect_url } and return
    else
      render text: 'Unsupported content type', status: 500
    end
  else
    render text: 'Unable to embed content', status: 500
  end
end

#health_check ⇒ Object 



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# File 'app/controllers/lti_box_engine/lti_controller.rb', line 76

def health_check
  head 200
end

#index ⇒ Object 



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# File 'app/controllers/lti_box_engine/lti_controller.rb', line 8

def index
  @client = Client.new
  @tp = @client.authorize!(request, params)
  if @tp
    if @tp.accepts_content?
      @lti_launch = LtiLaunch.create_from_tp(@tp)
      if @tp.accepts_file?
        @link_type = "direct"
      else
        @link_type = "shared"
      end
    else
      # launched via navigation
      redirect_to "https://www.box.com/embed_widget/files/0/f/0"
    end
  else
    # handle invalid auth
    @message = @client.error_message
    render :error
  end
end

#xml_config ⇒ Object 



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# File 'app/controllers/lti_box_engine/lti_controller.rb', line 54

def xml_config
  host = "#{request.protocol}#{request.host_with_port}"
  url = "#{host}#{root_path}"
  title = "Box"
  tool_id = "lti_box_engine"
  tc = IMS::LTI::ToolConfig.new(:title => title, :launch_url => url)
  tc.extend IMS::LTI::Extensions::Canvas::ToolConfig
  tc.description = "Embed files from Box.net"
  tc.canvas_privacy_anonymous!
  tc.canvas_domain!(request.host)
  tc.canvas_icon_url!("#{host}/assets/lti_box_engine/icon.png")
  tc.canvas_text!(title)
  tc.set_ext_param('canvas.instructure.com', :tool_id, tool_id)
  tc.canvas_homework_submission!(enabled: true)
  tc.canvas_editor_button!(enabled: true)
  tc.canvas_resource_selection!(enabled: true)
  tc.canvas_course_navigation!(enabled: true)
  tc.canvas_user_navigation!(enabled: true)
  tc.canvas_selector_dimensions!(430, 200)
  render xml: tc.to_xml
end