[Feature] Phase 2: Expose File System Tree API for Web IDE

[purvanshjoshi]

[Feature] Phase 2: Expose File System Tree API for Web IDE

Objective

To support a rich, VSCode-like file explorer on the Next.js dashboard, the Python backend must securely expose the structure and contents of the cloned repository.

Requirements

1. Directory Tree Endpoint (GET /repo/{repo_name}/tree):
   • Implement a new FastAPI endpoint in backend/main.py.
   • The endpoint must recursively traverse the cloned repository directory in the /tmp/ volume.
   • It should generate a nested JSON structure representing folders and files.
   • Crucial: Ignore .git, node_modules, __pycache__, and other standard ignored directories to prevent massive payload sizes.
2. File Content Endpoint (GET /repo/{repo_name}/file):
   • Accept a relative path as a query parameter.
   • Return the raw text content of the requested file so the frontend can display it.
   • Implement basic path-traversal security checks to prevent reading outside the cloned directory boundary.

Acceptance Criteria

• Calling /tree returns a properly nested JSON directory tree.
• Calling /file returns the correct raw text file, and properly errors out if the file is binary or outside the directory scope.