main.py

from dotenv import load_dotenv
load_dotenv()

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from app.api.routes import router

# Initialize FastAPI app
app = FastAPI(
    title="ReAct Agent API",
    description="API for Agent with tools",
    version="1.0.0"
)

# Configure CORS (Critical for frontend communication)
# Allowing all origins ("*") for development.
# In production, replace with your frontend URL.
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Include the router defined in app/api/routes.py
app.include_router(router, prefix="/api")

@app.get("/")
def health_check():
    """Simple health check endpoint."""
    return {
        "status": "running",
        "service": "ReAct Agent with tools",
        "version": "1.0.0",
        "docs": "http://127.0.0.1:8000/docs"
    }

if __name__ == "__main__":
    import uvicorn
    # Run the server using Uvicorn
    # reload=True enables auto-restart when code changes (dev mode)
    print("Starting server on http://127.0.0.1:8000")
    uvicorn.run("main:app", host="127.0.0.1", port=8000, reload=True)