Learning paths: Redesign learning path instructor view

[JohannesWt]

Checklist

General

• I tested all changes and their related features with all corresponding user types on a test server.
• Language: I followed the guidelines for inclusive, diversity-sensitive, and appreciative language.
• I chose a title conforming to the naming conventions for pull requests.

Server

• Important: I implemented the changes with a very good performance and prevented too many (unnecessary) database calls.
• I strictly followed the server coding and design guidelines.
• I added multiple integration tests (Spring) related to the features (with a high test coverage).
• I added pre-authorization annotations according to the guidelines and checked the course groups for all new REST Calls (security).
• I documented the Java code using JavaDoc style.

Client

• Important: I implemented the changes with a very good performance, prevented too many (unnecessary) REST calls and made sure the UI is responsive, even with large data.
• I strictly followed the client coding and design guidelines.
• Following the theming guidelines, I specified colors only in the theming variable files and checked that the changes look consistent in both the light and the dark theme.
• I added multiple integration tests (Jest) related to the features (with a high test coverage), while following the test guidelines.
• I added authorities to all new routes and checked the course groups for displaying navigation elements (links, buttons).
• I documented the TypeScript code using JSDoc style.
• I added multiple screenshots/screencasts of my UI changes.
• I translated all newly inserted strings into English and German.

Motivation and Context

The current instructor view for the learning path feature only displays the learning paths of students in the course. To provide a clearer overview, the instructor view should be redesigned to include more aggregated data.

Description

This PR introduces a new design for the learning path instructor view. Notifications about whether everything is set up correctly, which were previously displayed at the top of the learning paths table, now have a dedicated section. In this section, the instructor is alerted if competencies or their relationships need to be created, or if some student learning paths have not yet been generated. These notifications are represented by small, color-coded banners indicating the severity of the issue.

Additionally, the learning paths table has been simplified and slightly redesigned. A new analysis section has also been introduced, which provides more aggregated data for the entire course. This section includes a competency path that shows the average mastery of competencies, offering the instructor a clearer overview of student progress.

Steps for Testing

Prerequisites:

• 1 Instructor
• 2 Students
• No competencies

1. Log in to Artemis
2. Navigate to Instructor Learning path view
3. Verify that the notification "No competencies" is shown
4. Create two or more competencies (without relations)
5. Verify that the notification "No relations" is shown
6. Create relations between the competencies and add a lecture unit to each competency
7. Verify that that the notification "Missing learning paths" is shown
8. Log in as a student and complete the lecture unit
9. Verify as an Instructor that the data in the learning paths table and analytics graph is shown correctly

Testserver States

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Review Progress

Code Review

• Code Review 1
• Code Review 2

Manual Tests

• Test 1
• Test 2

Test Coverage

Client

Class/File	Line Coverage	Confirmation (assert/expect)
competency-graph-modal.component.ts	100%	✅
competency-node.component.ts	88.46%	✅ ❌
learning-path-nav-overview.component.ts	94.11%	✅ ❌
learning-paths-analytics.component.ts	100%	✅
learning-paths-configuration.component.ts	94.73%	✅ ❌
learning-paths-state.component.ts	100%	✅
learning-paths-table.component.ts	97.67%	✅ ❌
learning-path-management.component.ts	94.25%	✅ ❌
learning-path-instructor-page.component.ts	100%	✅
base-api-http.service.ts	95%	✅ ❌
learning-path-api.service.ts	95.83%	✅ ❌
learning-path-health.model.ts	100%	✅
learning-path.model.ts	96.55%	✅ ❌

Screenshots

Before

After

Summary by CodeRabbit

Summary by CodeRabbit

• New Features

  • Added methods to retrieve non-zero competency progress records and calculate the average mastery progress for specified competencies.
  • Introduced a new method to generate competency graphs for courses.
  • Added a new localization file for German language support in learning path management.
  • Launched a new Angular component for displaying learning paths in a table format with search and pagination functionalities.

• Bug Fixes

  • Simplified health status determination in the learning path service by removing the "OK" status.

• Chores

  • Updated the constructor of the learning path service to include new repository dependencies.
  • Modified the LearningPathHealthDTO to remove the "OK" status from the health status enum.
  • Removed outdated test cases related to health status checks from the LearningPathService tests.

[pzdr7]

Reapprove

[SimonEntholzer]

Reapprove

[JohannesStoehr]

Code

[MaximilianAnzinger]

Maintainer approved

[coderabbitai]

Actionable comments posted: 1

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📥 Commits

Files that changed from the base of the PR and between 59e21d7 and 1fd81fb.

📒 Files selected for processing (1)

• src/main/java/de/tum/cit/aet/artemis/atlas/web/LearningPathResource.java (1 hunks)

🧰 Additional context used

📓 Path-based instructions (1)

src/main/java/de/tum/cit/aet/artemis/atlas/web/LearningPathResource.java (1)

Pattern src/main/java/**/*.java: naming:CamelCase; principles:{single_responsibility,small_methods,no_duplication}; db:{perf_queries,datetime_not_timestamp}; rest:{stateless,singleton,delegate_logic,http_only,minimal_dtos}; dtos:{java_records,no_entities,min_data,single_resp}; di:constructor_injection; kiss:simple_code; file_handling:os_indep_paths; practices:{least_access,avoid_transactions,code_reuse,static_member_ref,prefer_primitives}; sql:{param_annotation,uppercase,avoid_subqueries};java:avoid_star_imports