Enhance PR Review with Claude 3.5 Sonnet and Improved Commit Display

[bstanga]

Enhances the pull request review workflow by improving commit message display with clickable SHA links and detailed information. Sets Claude 3.5 Sonnet as the default LLM model and implements smarter overview comment handling by updating existing comments instead of creating duplicates. The changes improve the user interface for displaying commit and file information while streamlining the review process.

[github-actions]

📖 Walkthrough

Enhances the pull request review workflow by improving commit message display with clickable SHA links and detailed information. Sets Claude 3.5 Sonnet as the default LLM model and implements smarter overview comment handling by updating existing comments instead of creating duplicates. The changes improve the user interface for displaying commit and file information while streamlining the review process.

Changes

File	Summary
.github/workflows/presubmit-review.yml	Updates workflow name to 'Presubmit.ai' and sets claude-3-5-sonnet-20241022 as default model via environment variable. Renames job from review to Review.
action.yml	Changes the action's branding icon from git-merge to check-square while maintaining black color theme.
src/messages.ts	Implements improved commit message display with clickable SHA links and better file information formatting. Adds OVERVIEW_MESSAGE_SIGNATURE for comment identification and enhances details display with proper singular/plural hunk counting.
src/pull_request.ts	Adds functionality to find and update existing overview comments instead of creating duplicates. Reorganizes comment handling flow and improves logging messages. Updates imports to reflect new message building functions.

---

autogenerated by presubmit.ai

[github-actions]

📖 Walkthrough

This PR improves the display of commit messages in the initial PR analysis comment by showing detailed commit information with links to each commit. It also explicitly sets the Claude 3.5 Sonnet model as the default LLM model both in the workflow configuration and environment variables.

Changes

File	Summary
.github/workflows/presubmit-review.yml	Added LLM_MODEL environment variable set to claude-3-5-sonnet-20241022 in the GitHub workflow configuration.
src/messages.ts	Refactored buildInitialMessage function to show detailed commit information including clickable links to each commit, commit SHA, and commit messages. Added GitHub repository context for building commit URLs.
src/pull_request.ts	Reorganized the code to fetch commit information before creating the initial comment, and updated the buildInitialMessage function call to pass commit data instead of just base and head SHAs.

[github-actions]

📖 Walkthrough

Enhances the PR review workflow by improving commit message display with detailed information and clickable links. Sets Claude 3.5 Sonnet as the default LLM model both in workflow configuration and environment variables. Implements better handling of overview comments by updating existing ones instead of creating duplicates.

Changes

File	Summary
.github/workflows/presubmit-review.yml	Renames workflow to 'Presubmit.ai' and job to 'Review'. Sets claude-3-5-sonnet-20241022 as default model via both environment variable and input parameter.
action.yml	Changes the action's branding icon from git-merge to check-square while maintaining black color.
src/messages.ts	Refactors message building to include detailed commit information with GitHub links. Adds signature for overview messages and improves file summary display with proper singular/plural for hunks.
src/pull_request.ts	Adds functionality to find and update existing overview comments instead of creating new ones. Reorganizes the comment creation flow and improves logging messages.

[bstanga]

Review submitted

[bstanga]

The commit message formatting could be simplified using a single-line template literal for better readability. Consider refactoring to:

- message += `- [${commit.sha.slice(
-      0,
-      7
-    )}](https://github.com/${owner}/${repo}/commit/${commit.sha}): ${
-      commit.commit.message
-    }\n`;
+ message += `- [${commit.sha.slice(0, 7)}](https://github.com/${owner}/${repo}/commit/${commit.sha}): ${commit.commit.message}\n`;

[bstanga]

While you're using the optional chaining operator (?.), it's good practice to be explicit about null/undefined checks when searching for existing comments. Consider adding a null check:

- let overviewComment = comments.find((comment) =>
-   comment.body?.includes(OVERVIEW_MESSAGE_SIGNATURE)
- );
+ let overviewComment = comments.find((comment) =>
   comment.body && comment.body.includes(OVERVIEW_MESSAGE_SIGNATURE)
 );

[bstanga]

The job name Review uses PascalCase while typical GitHub Actions job names use kebab-case or snake_case for better consistency with other workflows. Consider renaming to:

-  Review:
+  code-review:

[bstanga]

The LLM model is specified both as an environment variable and as an input parameter. This creates redundancy and potential for inconsistency. Consider using only one method to specify the model:

         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          LLM_MODEL: "claude-3-5-sonnet-20241022"
           LLM_API_KEY: ${{ secrets.LLM_API_KEY }}
         with:
           llm_model: "claude-3-5-sonnet-20241022"