Add a REST endpoint to fetch the latest Git commit information

[LazarenkoDmytro]

Feature Request

Implement a REST endpoint to retrieve the latest Git commit details, including the commit hash and date, using the following specifications.

Requirements :

• Endpoint: /commit-info
• HTTP Method: GET
• Response:
  • On success (200 OK):

    {
      "commitHash": "abc123456def7890ghi",
      "commitDate": "14/12/2024 16:30:00"
    }

  • On error (500 Internal Server Error):

    {
      "error": "Failed to fetch commit info: <error details>"
    }

Technical Details

• Use the JGit library to interact with the .git repository and retrieve the latest commit information:
  • commitHash: The hash of the latest commit.
  • commitDate: The timestamp of the latest commit, formatted as dd/MM/yyyy HH:mm:ss in the Europe/Kyiv timezone.
• Introduce a service interface (CommitInfoService) with an implementation class (CommitInfoServiceImpl) to encapsulate the logic for retrieving Git information.
• Define a controller (CommitInfoController) to expose the endpoint and return the appropriate response.
• Use polymorphism in the response:
  • Create an abstract DTO (CommitInfoDto) as the base class.
  • Define subclasses for:
    • Success: CommitInfoSuccessDto (fields: commitHash, commitDate).
    • Error: CommitInfoErrorDto (field: error).

Error Handling

• Return an error response (500) if:
  • The .git directory is missing.
  • Any exception occurs while retrieving the commit information.
• Include clear error messages for easier debugging.

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Why This Feature Is Important

• Provides visibility into the current state of the codebase at runtime.
• Helps with debugging, auditing, and deployment validation.