Implemented a system message in a stream chat when it's mentioned in another stream chat, with validation and cleanup

[matanfield]

What was changed?

Stream Mention System Implementation

Overview

Added functionality to create system messages when a stream is mentioned in another stream's chat. When a user mentions stream X in stream Y, a system message appears in stream X saying "This stream was mentioned in _streamYName by _userName" with clickable links to both the source stream and the user.

Key Changes

• Added new system message type for stream mentions
• Implemented stream mention detection and validation
• Added system message creation with proper error handling
• Added cleanup mechanism for failed message sends
• Added comprehensive test coverage

Implementation Details

• Stream mentions use the format: [stream]streamId|streamName[/stream]
• System messages include clickable links to:
  • Source stream where mention occurred
  • User who mentioned the stream
• Added validation to ensure mentioned streams exist
• Implemented optimistic updates with proper cleanup on failure

Testing

Automated Tests

• Added test suite covering:
  • Stream mention detection
  • System message rendering
  • Error handling
  • Integration tests

Manual Testing Steps

1. Create a message mentioning a stream using: [stream]streamId|streamName[/stream]
2. Verify system message appears in mentioned stream
3. Verify both links (stream and user) are clickable and navigate correctly
4. Test error cases:
   • Mentioning non-existent streams
   • Network issues
   • Multiple mentions in one message

Safety Measures

• Stream ID validation before system message creation
• Cleanup mechanism for failed message sends
• Comprehensive error handling
• Proper logging for debugging

Dependencies

No new dependencies added.

Notes

• Rate limiting for stream mentions can be added in future iterations if needed
• Maximum mentions per message can be implemented if abuse is detected

[netlify]

❌ Deploy Preview for preview-common failed.

Name	Link
🔨 Latest commit	2a33321
🔍 Latest deploy log	https://app.netlify.com/sites/preview-common/deploys/6748b4988218850008fff2d1