Enhancement : Store CreatedAt and updatedAt field in firestore document when the document is created/updated

Issue Description

The updatedAt field in our Firebase collection documents is inconsistently updated by developers through the API, leading to data inconsistencies.

Expected Behavior

The updatedAt field should be consistently updated whenever changes are made to the document, ensuring accurate and up-to-date timestamps.

Current Behavior

Currently, developers are not consistently updating the updatedAt field when modifying data through the API, resulting in discrepancies in timestamp accuracy across documents.

Severity/Priority

• Critical
• High
• Medium
• Low

Possible Solutions

• Implement Server-Side Solution:
  Create a Firebase Cloud Function to automatically update the updatedAt field whenever changes are made to the document. This ensures the timestamp remains accurate and consistent, even if developers forget to update it manually.

• Add updatedAt and createdAt in Request Body:
  Post validation, include updatedAt and createdAt fields in the request body. During document creation or update, fetch these from the request body and update the document accordingly.

• Validator Check:
  In the validator, verify whether the client is sending createdAt and updatedAt fields. If not, throw a 400 Bad Request error.

I found this stackoverlow ticket helful

No files, tests, or entry points are named. Start by locating the API paths that create and update Firestore documents, along with the request validator, and review how Firebase Cloud Functions could fit. Done means createdAt and updatedAt are consistently present and accurate for document creation and updates.