Linh – Fixed educator Task Submissions Backend Fixes + Add studentId + Late Detection

[linh2020]

Description

This PR fixes the Educator Task Submissions backend flow for #1934 and adds missing support requested in review:

• proper studentId filtering support from query params
• late submission detection/tagging logic
• stabilized response contract for educator submissions page

Related PRS (if any):

This backend PR is related to the frontend PR#4486

Main changes explained:

• Updated educator submissions endpoint logic to support expected filters:
  • status
  • student_id (mapped to studentId)
  • course_id (mapped to lesson plan/course)
• Added late detection logic:
  • marks submission as late when completedAt > dueAt
  • marks item as overdue when due date passed and task not submitted
• Improved status normalization for educator UI filters:
  • submissions → completed submissions
  • pending submissions → assigned/pending set
• Kept response compatibility by returning required snake_case fields:
  • student_name, task, submission_link, status, submitted_at
• Also returns camelCase fields used by current frontend rendering.
• Fixed backend route/controller wiring issues that previously caused route boot failures in integration tests.

How to test:

• Checkout this backend branch.

• Start app and login as Educator/Admin user.

• Navigate to Educator task submissions view (/educator/task-submissions page in UI flow).

• Verify:

  • submission list loads dynamically
  • filtering by course, status, and student works
  • records show expected fields (student name, task, type, submission date, status)
  • late submissions are tagged correctly
  • pending/overdue behavior is correct
  • review link opens task detail/review page

Screenshots or videos of changes:

Note:

Include the information the reviewers need to know.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud