Canvas LMS Create Assignment and Grade Submission

arazzo: 1.0.1
info:
  title: Canvas LMS Create Assignment and Grade Submission
  summary: Create an assignment, find a student's submission, and post a grade plus comment.
  description: >-
    A teacher grading flow for Canvas. The workflow creates an assignment in a
    course, fetches the supplied student's submission for that assignment, and
    posts a grade and feedback comment to that submission. Because Canvas
    auto-creates a placeholder submission record per student per assignment, the
    submission can be read and graded immediately after the assignment is
    created. Every step spells out its request inline so the flow can be read and
    executed without opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: canvasApi
  url: ../openapi/canvas-lms-rest-api-openapi.yml
  type: openapi
workflows:
- workflowId: create-assignment-and-grade-submission
  summary: Create an assignment then grade a specific student's submission for it.
  description: >-
    Creates an assignment in the course, reads the target student's submission
    record for the new assignment, and posts a grade plus an optional comment to
    that submission.
  inputs:
    type: object
    required:
    - courseId
    - name
    - pointsPossible
    - userId
    - postedGrade
    properties:
      courseId:
        type: string
        description: The Canvas course id.
      name:
        type: string
        description: The name of the assignment to create.
      pointsPossible:
        type: number
        description: The maximum number of points the assignment is worth.
      userId:
        type: string
        description: The Canvas user id of the student whose submission will be graded.
      postedGrade:
        type: string
        description: The grade to post (points, percent, or letter depending on grading_type).
      textComment:
        type: string
        description: Optional feedback comment to attach to the submission.
  steps:
  - stepId: createAssignment
    description: >-
      Create the assignment in the course with the supplied name and point
      value.
    operationId: createAssignment
    parameters:
    - name: course_id
      in: path
      value: $inputs.courseId
    requestBody:
      contentType: application/json
      payload:
        assignment:
          name: $inputs.name
          points_possible: $inputs.pointsPossible
          submission_types:
          - online_text_entry
          published: true
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      assignmentId: $response.body#/id
  - stepId: getSubmission
    description: >-
      Read the target student's submission record for the newly created
      assignment.
    operationId: getSubmission
    parameters:
    - name: course_id
      in: path
      value: $inputs.courseId
    - name: assignment_id
      in: path
      value: $steps.createAssignment.outputs.assignmentId
    - name: user_id
      in: path
      value: $inputs.userId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      submissionUserId: $response.body#/user_id
      workflowState: $response.body#/workflow_state
  - stepId: gradeSubmission
    description: >-
      Post the supplied grade and optional feedback comment to the student's
      submission.
    operationId: gradeSubmission
    parameters:
    - name: course_id
      in: path
      value: $inputs.courseId
    - name: assignment_id
      in: path
      value: $steps.createAssignment.outputs.assignmentId
    - name: user_id
      in: path
      value: $inputs.userId
    requestBody:
      contentType: application/json
      payload:
        submission:
          posted_grade: $inputs.postedGrade
        comment:
          text_comment: $inputs.textComment
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      grade: $response.body#/grade
      score: $response.body#/score
      gradedState: $response.body#/workflow_state
  outputs:
    assignmentId: $steps.createAssignment.outputs.assignmentId
    grade: $steps.gradeSubmission.outputs.grade
    score: $steps.gradeSubmission.outputs.score