feat(floware): change to OAuth flow from DWD for cron job

[vishnurk6247]

Summary by CodeRabbit

• Configuration Changes
  • Updated Gmail email service authentication mechanism to use OAuth 2.0 credentials (client ID, client secret, and refresh token) instead of service account authentication.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 2f143758-ab70-475b-bd19-93db6730ab04

📥 Commits

Reviewing files that changed from the base of the PR and between aaa79e9 and b28cbb1.

📒 Files selected for processing (3)

• wavefront/server/apps/floware/floware/config.ini
• wavefront/server/modules/user_management_module/user_management_module/services/email_service.py
• wavefront/server/modules/user_management_module/user_management_module/user_container.py

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📝 Walkthrough

Walkthrough

Gmail authentication switches from service-account delegation to OAuth2 credentials. Config keys, GmailEmailService constructor, credential refresh logic, and dependency injection are updated in parallel to support client_id, client_secret, and refresh_token instead of service account file and delegate user parameters.

Changes

Gmail OAuth Migration

Layer / File(s)	Summary
Config schema migration wavefront/server/apps/floware/floware/config.ini	Gmail configuration parameters replaced: service_account_file and delegate_user removed; client_id, client_secret, and refresh_token added while email_sender is retained.
GmailEmailService OAuth implementation wavefront/server/modules/user_management_module/user_management_module/services/email_service.py	GmailEmailService constructor signature changed to accept client_id, client_secret, refresh_token; imports updated for OAuth credential handling; credential refresh and Gmail API service initialization added via get_credentials() and _get_gmail_service() methods.
Email sending with OAuth service wavefront/server/modules/user_management_module/user_management_module/services/email_service.py	send_email method updated to retrieve Gmail service via _get_gmail_service() instead of prior credential construction patterns.
Dependency injection wiring wavefront/server/modules/user_management_module/user_management_module/user_container.py	UserContainer email_service provider for Gmail updated to inject client_id, client_secret, refresh_token to GmailEmailService instead of service_account_b64 and delegate_user.

Sequence Diagram

sequenceDiagram
  participant Config as Configuration
  participant Container as UserContainer
  participant Service as GmailEmailService
  participant OAuth as Google OAuth
  participant API as Gmail API
  Config->>Container: client_id, client_secret, refresh_token
  Container->>Service: initialize with OAuth credentials
  Service->>OAuth: get_credentials()
  OAuth->>Service: refreshed Credentials
  Service->>API: _get_gmail_service() with refreshed token
  API->>Service: Gmail service client
  Service->>API: send_email via service

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Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Poem

🐰 OAuth flows where tokens dance,
Service accounts fade in glance,
Config keys align so right,
Gmail shines in OAuth light! ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: migrating Gmail authentication from service account (DWD/delegate_user) to OAuth flow across config, email service, and container wiring.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/gmail-cron

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