NingWei_#617_Ai UI Designer for APIs_demo

[AllenWn]

PR Description

Hi, this is Ning Wei, an applicant for Google Summer of Code 2025, applying for the project "AI UI Designer for APIs" under API Dash.
I've already submitted my proposal on the GSoC official platform.

This PR implements the Schema-Based UI Generator demo, which is the first core functionality in the project. The goal is to:

Parse a sample API response (JSON) to extract field structure (type, key, etc.)

Call LLM (ChatGPT) to recommend appropriate Flutter UI widgets (e.g., TextField, Switch, etc.) for each field

Dynamically render a beautiful Flutter UI based on the schema and AI suggestions

The current implementation uses OpenAI's GPT-3.5 API for prototyping and verification purposes.
It can be easily swapped with a local LLM (e.g., Ollama) during or after the project phase for cost-efficiency and offline deployment.

Related Issues

• Closes AI UI Designer for APIs #617

Checklist

• I have gone through the contributing guide
• I have updated my branch and synced it with project main branch before making this PR
• I am using the latest Flutter stable branch (run flutter upgrade and verify)
• I have run the tests (flutter test) and all tests are passing

Added/updated tests?

We encourage you to add relevant test cases.

• Yes
• No, and this is why: please replace this line with details on why tests have not been included

OS on which you have developed and tested the feature?

• Windows
• macOS
• Linux

[animator]

Your PoC has been reviewed. Thanks for submitting it.

[AllenWn]

Hi @animator,
Thanks for reviewing my PoC! Let me know if there’s anything I can continue to work on or improve before contributor selection. I’m happy to take on more tasks or refine the current demo further if needed.
Also, if you have any suggestions or feedback on my submitted proposal, I’d really appreciate it!