fix(parsers): fix md, pptx, html kb uploads

[waleedlatif1]

Summary

fix md, pptx, html kb uploads. we added the parsers for them, but needed to add some additional logic to ensure we accept any of their formats in the UI uploads

Type of Change

• Bug fix

Testing

Tested manually.

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

Screenshots/Videos

Screen.Recording.2025-08-31.at.12.36.00.AM.mov

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
sim	Building	Preview	Comment	Aug 31, 2025 7:52am

1 Skipped Deployment

Project	Deployment	Preview	Comments	Updated (UTC)
docs	Skipped			Aug 31, 2025 7:52am

[greptile-apps]

Greptile Summary

This PR fixes a bug where knowledge base uploads were rejecting MD, PPTX, and HTML files despite having backend parsers available for these formats. The solution centralizes file validation logic by creating a new validation module at /lib/uploads/validation.ts that maps file extensions to multiple MIME types to handle browser inconsistencies.

The changes extract hardcoded file type constants from two upload components (upload-modal.tsx and create-modal.tsx) and replace them with imports from the centralized validation module. The new validation system extends support to include 'ppt', 'pptx', 'html', and 'htm' extensions, with comprehensive MIME type mappings that account for various browser interpretations (e.g., MD files can be reported as 'text/markdown', 'text/x-markdown', 'text/plain', or 'application/markdown').

The validation module exports three key utilities: ACCEPTED_FILE_TYPES (flattened array of all supported MIME types), ACCEPTED_FILE_EXTENSIONS (array of file extensions with dot prefixes), and ACCEPT_ATTRIBUTE (combined string for HTML input accept attributes). This approach aligns with the codebase's pattern of using dedicated configuration files for component properties and ensures consistent file handling across all upload interfaces.

Confidence score: 4/5

• This PR is safe to merge with minimal risk as it addresses a clear bug with a well-structured solution
• Score reflects solid architectural approach of centralizing validation logic and comprehensive MIME type handling, though manual testing only slightly reduces confidence
• Pay close attention to /lib/uploads/validation.ts to ensure all supported file types have appropriate MIME type mappings

Context used:

Context - When defining properties for components, use a dedicated config file (.ts) for configuration and keep rendered components in their respective component files. (link)

_{3 files reviewed, no comments}

_{Edit Code Review Bot Settings | Greptile}