A POC for a pipeline that generates a changelog for a given PR - using code diffs and OpenAI's API - and adds it to the PR as a comment.

The secret OPENAI_API_KEY must be defined in Github in order for the application to authenticate with OpenAI's API.

A python script generate_docs.py gets the diffs from the current PR and the main branch, classifies these diffs in 'added', 'modified' and 'deleted' blocks, and then requests a description from OpenAI's API based on these blocks:

Based only on this diffs:
Added code:
{added_code}

Deleted code:
{deleted_code}

Modified code:
{modified_code}.

Explain the main changes made to the code in terms of added, changed, or removed features, with one change per line.