tududi/backend/modules/projects
Chris 11cd77bedd
Fix Telegram notification spam with channel-level rate limiting (#951)
* Fix Telegram notification spam with channel-level rate limiting

Addresses issue #950 where Telegram notifications were sent excessively
(96-288 messages per day per task) due to the delete-and-recreate pattern
added in commit 105a913a to fix navbar notification pile-up.

Changes:
- Add channel_sent_at JSON field to notifications table to track when
  each channel (telegram, email, push) was last sent
- Add helper methods to notification model:
  - markChannelAsSent(channel): Records send timestamp
  - wasChannelRecentlySent(channel, threshold): Checks if sent within 24h
- Modify sendTelegramNotification() to check rate limit before sending
- Update service layer (dueTaskService, deferredTaskService,
  dueProjectService) to preserve channel_sent_at when recreating
  notifications
- Add comprehensive unit and integration tests (20 tests, all passing)

Impact:
- Reduces Telegram notifications from 96-288/day to 1/day per item
- Preserves in-app notification refresh behavior (every 5-15 min)
- Maintains navbar pile-up fix from original commit
- Rate limit configurable (default: 24 hours)

Fixes #950

* Fix linting and formatting issues

* Fix integration test that was trying to access private function

* Fix prettier formatting in integration test
2026-03-19 20:26:11 +02:00
..
controller.js Fix project view due date timezone bug and recurring multi-weekday bug (#836) 2026-02-12 12:12:24 +02:00
dueProjectService.js Fix Telegram notification spam with channel-level rate limiting (#951) 2026-03-19 20:26:11 +02:00
index.js Fix bug 366 (#764) 2026-01-07 18:18:07 +02:00
repository.js Fix bug 366 (#764) 2026-01-07 18:18:07 +02:00
routes.js Fix bug 366 (#764) 2026-01-07 18:18:07 +02:00
service.js Fix project view due date timezone bug and recurring multi-weekday bug (#836) 2026-02-12 12:12:24 +02:00
validation.js Fix bug 366 (#764) 2026-01-07 18:18:07 +02:00