tweak: prevent Gmail from threading data exports

[jaskfla]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @jaskfla, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses an issue where Gmail would thread multiple data export notification emails, making it difficult to distinguish between individual exports. By introducing a unique identifier in the email headers, each export notification will now appear as a separate conversation. Additionally, the changes include refactoring email utility functions for better modularity and maintainability, along with minor code modernizations and performance optimizations.

Highlights

• Prevent Gmail Threading for Data Exports: Implemented a mechanism to prevent Gmail from grouping data export emails into a single conversation thread by adding a unique X-Entity-Ref-ID header to each email sent via the emailAfterTimeout utility.
• Email Options Refactoring: The MailOptions interface has been refactored and exported, now allowing for more flexible email configurations, including the ability to pass custom headers directly to the sendEmail function.
• Code Modernization and Optimization: Updated parseInt to Number.parseInt for consistency, simplified synchronous file system operations (fs.existsSync, fs.mkdirSync), and optimized user data retrieval by explicitly selecting only necessary fields (email, first_name) when fetching user information.

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[gemini-code-assist]

Code Review

This pull request effectively addresses the goal of preventing Gmail from threading data export emails by adding a unique X-Entity-Ref-ID header. The implementation is solid, propagating the necessary changes through the email sending logic and updating type definitions accordingly.

I've also noticed and commented on some other improvements:

• The refactoring to only query for necessary user fields is a great performance optimization.
• The switch to using an options object for sendResponseAsEmail improves code clarity.
• A bug involving incorrect await usage with synchronous fs methods in ExportSurveyDataHandler.js has been fixed. I've added suggestions to further improve that piece of logic for better performance and robustness by using asynchronous file system APIs.

Overall, these are good changes that improve the codebase. My review comments focus on taking one of the fixes a step further to align with best practices for asynchronous Node.js applications.

[jaskfla]

Tip

Review this PR commit-by-commit