feat: add gradebook

app/controllers/components/course/gradebook_component.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+class Course::GradebookComponent < SimpleDelegator
+  include Course::ControllerComponentHost::Component
+
+  def self.display_name
+    'Gradebook'
+  end
+
+  def sidebar_items
+    return [] unless can?(:read_gradebook, current_course)
+
+    [
+      {
+        key: :gradebook,
+        icon: :gradebook,
+        weight: 9,
+        path: course_gradebook_path(current_course)
+      }
+    ]
+  end
+end

app/controllers/course/gradebook_controller.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+class Course::GradebookController < Course::ComponentController
+  before_action :authorize_read_gradebook!
+
+  def index
+    @published_assessments = fetch_published_assessments
+    assessment_ids = @published_assessments.pluck(:id)
+    @students = current_course.course_users.students.without_phantom_users.includes(:user)
+    student_ids = @students.pluck(:user_id)
+    @assessment_max_grades = Course::Assessment.max_grades(assessment_ids)
+    @student_assessment_grades = Course::Assessment::Submission.grade_summary(
+      student_ids: student_ids,
+      assessment_ids: assessment_ids
+    )
+  end
+
+  private
+
+  def authorize_read_gradebook!
+    authorize! :read_gradebook, current_course
+  end
+
+  def component
+    current_component_host[:course_gradebook_component]
+  end
+
+  def fetch_published_assessments
+    current_course.assessments.
+      published.
+      includes(tab: :category).
+      joins(tab: :category).
+      reorder('course_assessment_categories.weight, course_assessment_tabs.weight, course_assessments.id')
+  end
+end

app/models/components/course/gradebook_ability_component.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+module Course::GradebookAbilityComponent
+  include AbilityHost::Component
+
+  def define_permissions
+    allow_staff_read_gradebook if course_user&.staff?
+    super
+  end
+
+  private
+
+  def allow_staff_read_gradebook
+    can :read_gradebook, Course, id: course.id
+  end
+end

app/models/course/assessment.rb

@@ -160,6 +160,22 @@ def self.use_relative_model_naming?
     true
   end
 
+  # Returns a hash of assessment_id => max_grade (sum of question maximum_grades).
+  def self.max_grades(assessment_ids)
+    return {} if assessment_ids.empty?
+
+    rows = find_by_sql(
+      sanitize_sql_array([<<-SQL.squish, assessment_ids])
+        SELECT cqa.assessment_id, COALESCE(SUM(caq.maximum_grade), 0) AS max_grade
+        FROM course_question_assessments cqa
+        JOIN course_assessment_questions caq ON caq.id = cqa.question_id
+        WHERE cqa.assessment_id IN (?)
+        GROUP BY cqa.assessment_id
+      SQL
+    )
+    rows.to_h { |row| [row.assessment_id, row.max_grade.to_f] }
+  end
+
   def to_partial_path
     'course/assessment/assessments/assessment'
   end

app/models/course/assessment/submission.rb

@@ -323,6 +323,26 @@ def self.on_dependent_status_change(answer)
     answer.submission.last_graded_time = Time.now
   end
 
+  # Returns a hash of [creator_id, assessment_id] => grade for the given students and assessments.
+  # Only graded/published submissions are counted; submitted-but-ungraded contribute 0.
+  def self.grade_summary(student_ids:, assessment_ids:)
+    return {} if student_ids.empty? || assessment_ids.empty?
+
+    rows = find_by_sql(
+      sanitize_sql_array([<<-SQL.squish, student_ids, assessment_ids])
+        SELECT cas.creator_id, cas.assessment_id, COALESCE(SUM(caa.grade), 0) AS grade
+        FROM course_assessment_submissions cas
+        JOIN course_assessment_answers caa ON caa.submission_id = cas.id
+        WHERE cas.creator_id IN (?)
+          AND cas.assessment_id IN (?)
+          AND cas.workflow_state IN ('graded', 'published')
+          AND caa.current_answer = TRUE
+        GROUP BY cas.creator_id, cas.assessment_id
+      SQL
+    )
+    rows.to_h { |row| [[row.creator_id, row.assessment_id], row.grade.to_f] }
+  end
+
   private
 
   # Queues the submission for auto grading, after the submission has changed to the submitted state.

app/views/course/gradebook/index.json.jbuilder

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+tabs = @published_assessments.map(&:tab).uniq(&:id)
+
+json.tabs tabs do |tab|
+  json.id tab.id
+  json.title tab.title
+  json.categoryId tab.category.id
+  json.categoryTitle tab.category.title
+end
+
+json.assessments @published_assessments do |assessment|
+  json.id assessment.id
+  json.title assessment.title
+  json.tabId assessment.tab_id
+  json.maxGrade @assessment_max_grades[assessment.id] || 0.0
+end
+
+json.students @students do |course_user|
+  user_id = course_user.user_id
+  total_grade = 0.0
+  total_max_grade = 0.0
+  grades = {}
+
+  @published_assessments.each do |assessment|
+    grade = @student_assessment_grades[[user_id, assessment.id]] || 0.0
+    grades[assessment.id] = grade
+    total_grade += grade
+    total_max_grade += @assessment_max_grades[assessment.id] || 0.0
+  end
+
+  json.id course_user.id
+  json.name course_user.name
+  json.grades grades
+  json.totalGrade total_grade
+  json.totalMaxGrade total_max_grade
+end

client/app/api/course/Gradebook.ts

@@ -0,0 +1,14 @@
+import { AxiosResponse } from 'axios';
+import { GradebookData } from 'types/course/gradebook';
+
+import BaseCourseAPI from './Base';
+
+export default class GradebookAPI extends BaseCourseAPI {
+  get #urlPrefix(): string {
+    return `/courses/${this.courseId}/gradebook`;
+  }
+
+  index(): Promise<AxiosResponse<GradebookData>> {
+    return this.client.get(this.#urlPrefix);
+  }
+}

client/app/api/course/index.js

@@ -12,6 +12,7 @@ import DuplicationAPI from './Duplication';
 import EnrolRequestsAPI from './EnrolRequests';
 import ExperiencePointsRecordAPI from './ExperiencePointsRecord';
 import ForumAPI from './Forum';
+import GradebookAPI from './Gradebook';
 import GroupsAPI from './Groups';
 import LeaderboardAPI from './Leaderboard';
 import LearningMapAPI from './LearningMap';
@@ -48,6 +49,7 @@ const CourseAPI = {
   experiencePointsRecord: new ExperiencePointsRecordAPI(),
   folders: new FoldersAPI(),
   forum: ForumAPI,
+  gradebook: new GradebookAPI(),
   groups: new GroupsAPI(),
   leaderboard: new LeaderboardAPI(),
   learningMap: new LearningMapAPI(),

client/app/bundles/course/gradebook/__tests__/GradebookIndex.test.tsx

@@ -0,0 +1,77 @@
+import { fireEvent, render, screen } from 'test-utils';
+
+import GradebookIndex from '../pages/GradebookIndex';
+import { GradebookState } from '../types';
+
+jest.mock('../operations', () => ({
+  __esModule: true,
+  default: () => (): Promise<void> => Promise.resolve(),
+}));
+
+const gradebookState: GradebookState = {
+  tabs: [
+    { id: 1, title: 'Assignments', categoryId: 10, categoryTitle: 'Missions' },
+  ],
+  assessments: [{ id: 10, title: 'Assignment 1', tabId: 1, maxGrade: 100 }],
+  students: [
+    {
+      id: 1,
+      name: 'Alice Smith',
+      grades: { '10': 80 },
+      totalGrade: 80,
+      totalMaxGrade: 100,
+    },
+    {
+      id: 2,
+      name: 'Bob Jones',
+      grades: { '10': 60 },
+      totalGrade: 60,
+      totalMaxGrade: 100,
+    },
+  ],
+};
+
+describe('<GradebookIndex />', () => {
+  it('renders all students initially', async () => {
+    render(<GradebookIndex />, { state: { gradebook: gradebookState } });
+    expect(await screen.findByText('Alice Smith')).toBeInTheDocument();
+    expect(screen.getByText('Bob Jones')).toBeInTheDocument();
+  });
+
+  it('filters students by name on search input', async () => {
+    render(<GradebookIndex />, { state: { gradebook: gradebookState } });
+
+    const input = await screen.findByPlaceholderText('Search by student name');
+    fireEvent.change(input, { target: { value: 'alice' } });
+
+    expect(screen.getByText('Alice Smith')).toBeInTheDocument();
+    expect(screen.queryByText('Bob Jones')).not.toBeInTheDocument();
+  });
+
+  it('renders a show percentage toggle', async () => {
+    render(<GradebookIndex />, { state: { gradebook: gradebookState } });
+    expect(await screen.findByLabelText('Show percentage')).toBeInTheDocument();
+  });
+
+  it('shows raw scores by default', async () => {
+    render(<GradebookIndex />, { state: { gradebook: gradebookState } });
+
+    // Raw score is the default — Alice's grade shows as "80 / 100"
+    expect(await screen.findAllByText('80 / 100')).not.toHaveLength(0);
+    expect(screen.queryByText('80.00%')).not.toBeInTheDocument();
+  });
+
+  it('switches from raw score to percentage when the toggle is clicked', async () => {
+    render(<GradebookIndex />, { state: { gradebook: gradebookState } });
+
+    // Wait for default raw score rendering
+    await screen.findAllByText('80 / 100');
+
+    // Click the "Show percentage" toggle
+    fireEvent.click(screen.getByLabelText('Show percentage'));
+
+    // Percentage replaces the raw score
+    expect(await screen.findAllByText('80.00%')).not.toHaveLength(0);
+    expect(screen.queryByText('80 / 100')).not.toBeInTheDocument();
+  });
+});