Allow sending file uploads without typed message

[iokinpardo]

File-only uploads

 

• Purpose: Allow users to send uploaded files immediately without having to type a companion message.
• Usage example: Upload a document via the File Upload button and click Send right away; the embed will deliver the files to your Agentflow conversation and, if a text prompt is required, automatically include a hidden file uploaded message for you.
• Dependencies / breaking changes: No additional configuration is required; the behavior is backward compatible with existing upload settings.

[gemini-code-assist]

Summary of Changes

Hello @iokinpardo, 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 introduces a significant quality-of-life improvement by enabling users to send file uploads directly without requiring an accompanying text message. This streamlines the user experience, particularly for interactions where only files need to be transmitted, by automatically providing a default message when no text is entered.

Highlights

• File-Only Uploads: Users can now send files without needing to type a message, improving the workflow for file-centric interactions.
• Automatic Message Insertion: When files are uploaded without a text message, a hidden "file uploaded" message is automatically generated and sent to the Agentflow conversation.
• Documentation Update: The README.md has been updated to clearly describe this new feature, its purpose, and usage.

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[gemini-code-assist]

Code Review

This pull request introduces a great feature that allows users to upload files without typing a message. The implementation in Bot.tsx is mostly solid and clear. I've added a couple of suggestions to improve code efficiency and maintainability. The documentation update in README.md is also clear and helpful.

[gemini-code-assist]

The constant fileUploadFallbackMessage is defined inside handleSubmit, which means it's redeclared on every function call. It's better to define it once at a higher scope, for example, at the module level before the Bot component, or right inside the Bot component but outside handleSubmit. This improves performance slightly and follows best practices for constants.

[gemini-code-assist]

Using .filter(...).length > 0 iterates over the entire previews array even after a match is found. For checking existence, .some() is more efficient as it stops as soon as it finds a matching element.

Suggested change

	const containsFile = previews().filter((item) => !item.mime.startsWith('image') && item.type !== 'audio').length > 0;
	const containsFile = previews().some((item) => !item.mime.startsWith('image') && item.type !== 'audio');