fix: 4165 - Refactor message builder to avoid sending empty messages

[louis-jan]

Describe Your Changes

• I’ve resolved the issue where the app could include empty messages, which caused problems with a few remote providers. There was a case where message pushing could include an empty message in case of an error.

Fixes Issues

• bug: Interrupted threads causes Invalid API key error with Anthropic API #4165

Self Checklist

The code changes involve refactoring the function normalizeMessages and its integration within the system:

1. Removal from useSendChatMessage.ts:

   • The normalizeMessages function and the Stack import were removed from useSendChatMessage.ts. This function was previously responsible for ensuring consecutive messages from the same role (e.g., User or Assistant) were separated by an empty message. The feature was meant to meet specific requirements of some models.
   • The call to normalizeMessages was also removed from the resendChatMessage function, meaning normalization is no longer performed directly there.

2. Integration into messageRequestBuilder.ts:

   • normalizeMessages was moved into MessageRequestBuilder class in messageRequestBuilder.ts. This function maintains the same logic to avoid consecutive messages of the same role by inserting a dummy message.
   • The normalization process is now applied during the build() function call, ensuring the message list is normalized whenever a MessageRequest is built.
   • The Stack utility was imported to support this functionality.

By consolidating the normalizeMessages logic within the MessageRequestBuilder, the process of managing message roles is now contained within the request-building phase, promoting better cohesion and separability within the codebase.

[github-actions]

Barecheck - Code coverage report

Total: 69.33%

Your code coverage diff: 0.01% ▴

Uncovered files and lines

File	Lines
web/hooks/useSendChatMessage.ts	89-90, 92-97, 100-101, 106, 113, 115-117, 120-121, 123-124, 126, 128-130, 132, 136, 138, 142, 145-146, 152-153, 157, 168, 171, 175, 178, 181, 189, 192, 198, 201-202, 205-209, 212, 215, 218, 223, 228-229
web/utils/messageRequestBuilder.ts	38-39, 51-54, 56, 63, 68-69, 76, 81, 96-97, 102, 118-119, 123-124, 129, 132, 138-142, 144, 146, 148, 156, 159, 163