Changelog

All notable changes to this project will be documented here.

[1.0.0] - 2025-12-14

Added

• Canvas synchronization for both courses and exams.
• ID checks can now be registered during an exam.
• Students can now finish an exam by themselves.
• Details display added to AuditLog viewer.
• Ability to copy courses and exams.

Changed

• Submission worker is now token-based, so labs with mixed data types are easier to design.
• Submission worker now initializes memory, to avoid inconsistent behavior with non-terminated C strings and uninitialized variables.
• Archival of exams and courses now remove them from teacher view.

Fixed

• UI alerts are now consistent in heading size.
• Delete lab view crashing with error 400.

[0.4.1] - 2025-12-11

Fixed

• Wrong link for students in lab view.
• Broken student lab list in course view.

[0.4.0] - 2025-12-11

Added

• Ability to regrade submissions.
• Syntax highlighting for submission code viewer.

Changed

• Layout modernized, more information shown in every view.
• Submission worker now uses a more resilient database transaction method.

Fixed

• Bug with date queries in AuditLog viewer.
• Glyphicons upgraded to bootstrap icons.
• Manual labs are now properly marked as manual by worker.
• Grading date is now set by the worker.

[0.3.1] - 2025-12-09

Added

• Flags were added to bank/course list to indicate translation status.
• Button on bank/course pages for quick access to editing labs.
• Basic backup script with daily backups rotating 30 days.

Changed

• All textboxes that edit text (not code) now auto-resize.

Removed

• JQuery library import (no longer used).

Fixed

• Windows-style line endings in test input data no longer cause compilation failure result.
• Users no longer get logged out on server restart.
• Dark mode showing light mode colors on some UI elements.

[0.3.0] - 2025-12-08

Complete migration from MongoDB to PostgreSQL/SQLAlchemy, with comprehensive testing, improved security and a Docker-based deployment model.

Added

• PostgreSQL database - Complete migration from MongoDB to SQLAlchemy 2.0 ORM
• Alembic migrations - Database schema version control with 18 performance indexes
• CSRF protection - WTForms integration across all forms
• Audit logging - Database-backed audit trail with web viewer at /admin/log
• Test coverage - 90%+ coverage on critical exam/submission flows (pytest, pytest-flask)
• CI/CD pipeline - GitLab runner with automated testing and JUnit reports
• Type annotations - Full mypy type checking across codebase
• Dark mode - Light/dark theme toggle in UI
• Docker deployment - Production-ready containerization with user isolation
• Timezone handling - UTC storage with Europe/Stockholm display conversion

Changed

• Session management - Redis-backed sessions with Flask-Login
• Code formatting - Applied Black, Ruff, isort consistently
• Error handling - Custom error pages with better logging
• Security hardening - Fixed open redirect, timeout enforcement, login guards

Fixed

• Exam timeout enforcement
• Timezone conversion overflow issues
• Pagination across all views

Removed

• All MongoDB code and dependencies
• Lab import/export functionality (unused)
• Old manual deployment scripts

[0.2.0] - 2025-11-21

Final upgrades before migration work from MongoDB to PostgreSQL/SQLAlchemy.

Added

• Unit and integration tests (pytest)
• Exam generation tests and safety improvements
• Language switching (English/Swedish)

Changed

• Soft deletes - Labs now use soft deletion for data preservation
• Database call optimizations across models
• Improved logging throughout application

Fixed

• Exam time calculations
• Lab deletion crash on orphaned testcases
• Exam generation edge cases

[0.1.3] - 2022-05-26

Changed

• Flask 2.0 upgrade - Updated from Flask 1.2
• Queue indicators on submission status
• Dashboard improvements for students and teachers
• Lab ordering in course lists

[0.1.2] - 2021-11-05

Added

• Python support - Initial Python 3 grading capability for the submission server
• User CRUD operations
• Aggregate results API
• Recent submissions on teacher dashboard

Changed

• User management improvements
• Better error messages for teachers and students

Fixed

• Display name handling with Swedish characters
• Submission code view formatting

[0.1] - 2019-08-27

Introduces exam system with randomized selection from question banks.

Added

• Exam system - Timed exams with randomized question selection
• Question banks - Lab banks for exam generation
• User authentication levels (student/teacher/admin)
• Exam restrictions (on-campus IP, password protection)
• Exam results export for offline sync with Canvas LMS

Changed

• Updated to Python 3
• MongoDB context manager implementation

Security

• Regex injection prevention on searches
• Hidden exam enforcement

[0.0.1] - 2016-02-08

Initial release

Added

• Core grading system
• CAS authentication
• Course management
• Lab submissions
• Testcase system
• MongoDB backend
• User levels
• Bootstrap UI