submit orginal turnitin submission

Fixes Plat-1168

Test-plan:
Submit a turnitin assignment using the lti tool
it should create a submission with the submitted file as an attachment

Change-Id: I37b24f8d2cb5c78f1247a0096f1afe2f3528abcb
Reviewed-on: https://gerrit.instructure.com/59701
Reviewed-by: Brad Horrocks <bhorrocks@instructure.com>
Tested-by: Jenkins
Product-Review: Nathan Mills <nathanm@instructure.com>
QA-Review: Nathan Mills <nathanm@instructure.com>

app/controllers/lti_api_controller.rb

@@ -145,9 +145,14 @@ class LtiApiController < ApplicationController
 
   def turnitin_outcomes_placement
     verify_oauth
-    course, assignment, user = BasicLTI::BasicOutcomes.decode_source_id(@tool, params['lis_result_sourcedid'])
+    _course, assignment, user = BasicLTI::BasicOutcomes.decode_source_id(@tool, params['lis_result_sourcedid'])
     assignment.update_attribute(:turnitin_enabled,  false) if assignment.turnitin_enabled?
+    request.body.rewind
+    turnitin_processor = Turnitin::OutcomeResponseProcessor.new(@tool, assignment, user, JSON.parse(request.body.read))
+    turnitin_processor.process
     render json: {}, status: 200
+  rescue BasicLTI::BasicOutcomes::Unauthorized => e
+    return render :text => e, status:401
   end
 
 

gems/turnitin_api/lib/turnitin_api.rb

@@ -4,9 +4,7 @@ require 'simple_oauth'
 require 'faraday'
 require 'faraday_middleware'
 
+module TurnitinApi
   require 'turnitin_api/version'
   require 'turnitin_api/outcomes_response_transformer'
-
-module TurnitinApi
-
 end

gems/turnitin_api/lib/turnitin_api/outcomes_response_transformer.rb

@@ -1,5 +1,3 @@
-require "turnitin_api/version"
-
 module TurnitinApi
   class OutcomesResponseTransformer
 
@@ -7,10 +5,11 @@ module TurnitinApi
     # secret
     # turnitin_api response
 
-    attr_accessor :outcomes_response_json, :key
-    def initialize(key, secret, outcomes_response_json)
+    attr_accessor :outcomes_response_json, :key, :lti_params
+    def initialize(key, secret, lti_params, outcomes_response_json)
       @key = key
       @secret = secret
+      @lti_params = lti_params || {}
       @outcomes_response_json = outcomes_response_json
     end
 
@@ -39,13 +38,22 @@ module TurnitinApi
         conn.request :multipart
         conn.request :url_encoded
         conn.response :json, :content_type => /\bjson$/
+        conn.use FaradayMiddleware::FollowRedirects
         conn.adapter :net_http
       end
     end
 
     def make_call(url)
-      header = SimpleOAuth::Header.new(:post, url, {}, consumer_key: @key, consumer_secret: @secret, callback: 'about:blank')
-      connection.post url, header.signed_attributes
+      default_params = {
+          'roles' => 'Learner',
+          'lti_message_type' => 'basic-lti-launch-request',
+          'lti_version' => 'LTI-1p0',
+          'resource_link_id' => SecureRandom.hex(32),
+      }
+      params = default_params.merge(lti_params)
+      header = SimpleOAuth::Header.new(:post, url, params, consumer_key: @key, consumer_secret: @secret,
+                                       callback: 'about:blank')
+      connection.post url, params.merge(header.signed_attributes)
     end
 
   end

gems/turnitin_api/spec/outcomes_response_transformer_spec.rb

@@ -3,6 +3,7 @@ require 'spec_helper'
 describe TurnitinApi::OutcomesResponseTransformer do
   let(:oauth_key) { 'key' }
   let(:oauth_secret) { 'secret' }
+  let(:lti_params) { {lti_verions: '1p0'} }
   let(:outcomes_response_json) do
     {
         'lis_result_sourcedid' => "6",
@@ -10,12 +11,13 @@ describe TurnitinApi::OutcomesResponseTransformer do
         'outcomes_tool_placement_url' => "http://turnitin.com/api/lti/1p0/outcome_tool_data/4321"
     }
   end
-  subject { described_class.new(oauth_key, oauth_secret, outcomes_response_json) }
+  subject { described_class.new(oauth_key, oauth_secret, lti_params, outcomes_response_json) }
 
   describe 'initialize' do
 
     it 'initializes properly' do
       expect(subject.key).to eq oauth_key
+      expect(subject.lti_params). to eq lti_params
       expect(subject.outcomes_response_json).to eq outcomes_response_json
     end
   end

lib/turnitin/outcome_response_processor.rb

@@ -1,17 +1,51 @@
-
-
+require 'turnitin_api'
 module Turnitin
   class OutcomeResponseProcessor
-    class << self
-      def process(tool, outcomes_response_json)
+
+    def initialize(tool, assignment, user, outcomes_response_json)
+      @tool = tool
+      @assignment = assignment
+      @user = user
+      @outcomes_response_json = outcomes_response_json
+    end
 
 
-        # create new submission with the file
-        # save originality data
-        #
-
+    def process
+      attachment = create_attachment
+      @assignment.submit_homework(@user ,attachments:[attachment], submission_type: 'online_upload')
     end
     handle_asynchronously :process, max_attempts: 1, priority: Delayed::LOW_PRIORITY
+
+    private
+
+    def create_attachment
+
+      lti_params = {
+          'user_id' => Lti::Asset.opaque_identifier_for(@user),
+          'context_id' => Lti::Asset.opaque_identifier_for(@assignment.context),
+          'context_title' => @assignment.context.name,
+          'lis_person_contact_email_primary' => @user.email
+      }
+      turnitin_client = TurnitinApi::OutcomesResponseTransformer.new(@tool.consumer_key, @tool.shared_secret, lti_params, @outcomes_response_json)
+      attachment = nil
+      Dir.mktmpdir do |dirname|
+        turnitin_client.original_submission do |response|
+          filename = response.headers['content-disposition'].match(/filename=(\"?)(.+)\1/)[2]
+          path = File.join(dirname, filename)
+          File.open(path, 'wb') do |f|
+            f.write(response.body)
+          end
+          attachment = @assignment.attachments.new(
+              uploaded_data: Rack::Test::UploadedFile.new(path, response.headers['content-type'], true),
+              display_name: filename,
+              user: @user
+          )
+          attachment.save!
         end
       end
+      attachment
+    end
+
+  end
+
 end

spec/apis/lti/lti_api_spec.rb

@@ -69,11 +69,6 @@ describe LtiApiController, type: :request do
 
     end
 
-    # verify tool_id
-    # check resource_link_id
-    # verify assignment_id
-    # check that we a url
-
   end
 
 

spec/lib/turnitin/outcome_response_processor_spec.rb

@@ -2,8 +2,65 @@ require File.expand_path(File.dirname(__FILE__) + '/../../spec_helper.rb')
 
 module Turnitin
   describe OutcomeResponseProcessor do
-    # attach the file
-    # save originality data
-    #
+
+    let(:lti_student) { user_model }
+    let(:lti_course) { course_with_student({user: lti_student}).course }
+    let(:tool) do
+      tool = lti_course.context_external_tools.new(
+          name: "bob",
+          consumer_key: "bob",
+          shared_secret: "bob",
+          tool_id: 'some_tool',
+          privacy_level: 'public'
+      )
+      tool.url = "http://www.example.com/basic_lti"
+      tool.resource_selection = {
+          :url => "http://#{HostUrl.default_host}/selection_test",
+          :selection_width => 400,
+          :selection_height => 400}
+      tool.save!
+      tool
+    end
+
+    let(:lti_assignment) do
+      assignment = assignment_model(course: lti_course)
+      tag = assignment.build_external_tool_tag(url: tool.url)
+      tag.content_type = 'ContextExternalTool'
+      tag.content_id = tool.id
+      tag.save!
+      assignment
+    end
+
+    let(:outcome_response_json) do
+      {
+          "paperid" => 200505101,
+          "outcomes_tool_placement_url" => "https://sandbox.turnitin.com/api/lti/1p0/outcome_tool_data/200505101?lang=en_us",
+          "lis_result_sourcedid" => Lti::LtiOutboundAdapter.new(tool, lti_student, lti_course).encode_source_id(lti_assignment)
+      }
+    end
+
+    subject { described_class.new(tool, lti_assignment, lti_student, outcome_response_json) }
+
+    describe '#process' do
+      let(:filename) {'my_sample_file'}
+
+      before(:each) do
+        mock_response = mock('response_mock')
+        mock_response.stubs(:headers).returns(
+            {'content-disposition' => "attachment; filename=#{filename}", 'content-type' => 'plain/text'}
+        )
+        mock_response.stubs(:body).returns('1234')
+        TurnitinApi::OutcomesResponseTransformer.any_instance.expects(:original_submission).yields(mock_response)
+      end
+
+      it 'creates an attachment' do
+        subject.process_without_send_later
+        attachment = lti_assignment.attachments.first
+        expect(lti_assignment.attachments.count).to eq 1
+        expect(attachment.display_name).to eq filename
+      end
+
+    end
+
   end
 end