Fix IndexError in get_last_tag_from_remote Function

[markus-lassfolk]

Summary

This pull request addresses an IndexError: list index out of range that was occurring in the get_last_tag_from_remote function within the git_status.py file. The error emerged when the function attempted to access a specific index in the output of a subprocess command which sometimes returned fewer lines than expected.

Changes

• Added a check to verify the length of the output list before accessing the second-to-last element.
• Implemented handling for cases where the output is insufficient, thereby preventing the IndexError.
• Included additional verbose logging for better debugging and error tracking.

Impact

• These changes ensure that the function behaves as expected even when the subprocess command returns unexpected or minimal output.
• Prevents the application from crashing due to unhandled exceptions in scenarios where git tags are not as expected or absent.

Testing

• The function has been tested with various scenarios, including cases where the git command returns no tags, a single tag, or multiple tags. In all cases, the function now handles the output gracefully without causing an IndexError.

Full Exception when accessing Server Manager:

[2024-01-01 20:24:49,550] ERROR in app: Exception on /settings [GET]
Traceback (most recent call last):
  File "/home/markus/ail-framework/AILENV/lib/python3.10/site-packages/flask/app.py", line 2190, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/markus/ail-framework/AILENV/lib/python3.10/site-packages/flask/app.py", line 1486, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/markus/ail-framework/AILENV/lib/python3.10/site-packages/flask/app.py", line 1484, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/markus/ail-framework/AILENV/lib/python3.10/site-packages/flask/app.py", line 1469, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
  File "/home/markus/ail-framework/AILENV/lib/python3.10/site-packages/flask_login/utils.py", line 290, in decorated_view
    return current_app.ensure_sync(func)(*args, **kwargs)
  File "/home/markus/ail-framework/var/www/./modules/Role_Manager.py", line 84, in decorated_view
    return func(*args, **kwargs)
  File "/home/markus/ail-framework/var/www/blueprints/settings_b.py", line 41, in settings_page
    git_metadata = git_status.get_git_metadata()
  File "/home/markus/ail-framework/bin/packages/git_status.py", line 157, in get_git_metadata
    dict_git['last_remote_tag'] = get_last_tag_from_remote()
  File "/home/markus/ail-framework/bin/packages/git_status.py", line 139, in get_last_tag_from_remote
    res = process.stdout.split(b'\n')[-2].split(b'/')[-1].replace(b'^{}', b'').decode()
IndexError: list index out of range

[Terrtia]

Good catch !

Thanks !