from fastapi import FastAPI
from fastapi.responses import FileResponse
import os

app = FastAPI()

# Define the path to the Angular build output
frontend_dir = os.path.abspath("frontend")

# Serve the Angular index.html file for all root paths
@app.get("/{full_path:path}")
def serve_frontend(full_path: str):
    file_path = os.path.join(frontend_dir, full_path)
    
    if os.path.exists(file_path) and os.path.isfile(file_path):
        return FileResponse(file_path)
    else:
        # Serve the index.html for any unmatched routes (to handle Angular routing)
        return FileResponse(os.path.join(frontend_dir, "index.html"))

# Serve static assets (e.g., JS, CSS, images)
@app.get("/static/{full_path:path}")
def serve_static(full_path: str):
    return FileResponse(os.path.join(frontend_dir, "static", full_path))