Moves the program post_save signal handler to the module's top level and eliminating the class wrapper

[PawanMohit16]

Proposed change

Resolves #3440

Moves the program post_save signal handler to the module's top level and importing it directly. The class wrapper is eliminated and thereby fixing the SonarCloud python:S5720 code smell.

Checklist

• Required: I followed the contributing workflow
• Required: I verified that my code works as intended and resolves the issue as described
• Required: I ran make check-test locally: all warnings addressed, tests passed
• I used AI for code, documentation, tests, or communication related to this PR

[coderabbitai]

Summary by CodeRabbit

• Refactor
  • Streamlined internal code structure for program cache management to improve organization and reduce complexity. Enhanced code maintainability and quality through architectural improvements. All existing functionality and performance are fully preserved with no user-facing changes.

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Walkthrough

Replaced a class-based Program post-save signal handler with a module-level function and updated the package export to expose the new function; the receiver decorator was moved from the class method to the standalone function.

Changes

Cohort / File(s)	Summary
Signal handler refactor backend/apps/mentorship/signals/program.py	Removed ProgramPostSaveHandler class; added module-level program_post_save_clear_algolia_cache(_sender, instance, **_kwargs) function with @receiver decorator. Signature updated to ignore unused params; logic to log and clear the "programs" Algolia index retained.
Module exports update backend/apps/mentorship/signals/__init__.py	Replaced exported symbol ProgramPostSaveHandler with program_post_save_clear_algolia_cache to match the refactor.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: moving the signal handler to module level and removing the class wrapper.
Description check	✅ Passed	The description clearly explains the proposed change, references the resolved issue, and details the code smell being fixed.
Linked Issues check	✅ Passed	The PR successfully addresses issue #3440 by moving the handler to module level, eliminating the class wrapper and the SonarCloud python:S5720 code smell.
Out of Scope Changes check	✅ Passed	All changes are directly related to resolving issue #3440; no out-of-scope modifications are present.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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✨ Finishing touches

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🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[Copilot]

Pull request overview

This PR refactors the Program post_save signal handler by removing an unnecessary class wrapper and moving the handler to the module's top level, addressing SonarCloud code smell python:S5720.

Changes:

• Converted class-based signal handler to a module-level function
• Updated parameter naming to use underscore prefix for unused parameters (_sender, **_kwargs)
• Updated imports to reference the function directly instead of the class

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
backend/apps/mentorship/signals/program.py	Removed ProgramPostSaveHandler class wrapper and converted signal handler to module-level function with proper parameter naming
backend/apps/mentorship/signals/__init__.py	Updated import to reference the function program_post_save_clear_algolia_cache instead of the removed class

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[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

[arkid15r]

LGTM

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (7dc51d7) to head (11b87ef).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@     Coverage Diff      @@
##   main   #3446   +/-   ##
============================
============================

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[mrkeshav-05]

Hi @PawanMohit16 ,
The solution you implemented for this issue (#3440) seems to be partially incorrect and is causing errors when changing the program status.
While updating the program status, this error occurs:

I have implemented a solution in this PR .

[PawanMohit16]

Hello @mrkeshav-05 Thanks for pointing it out!
I just went through your PR and I completely missed the GraphQL cache invalidation case on program status updates.
I’ll keep this in mind for similar issues going forward.