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import os
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from agent.agentic_workflow import GraphBuilder
from fastapi.responses import JSONResponse
from dotenv import load_dotenv
from pydantic import BaseModel
import datetime
from typing import List
load_dotenv()
app = FastAPI()
app.add_middleware(
CORSMiddleware,
allow_origins=["*"], # Adjust for prod
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
class QueryRequest(BaseModel):
question: str
@app.get("/")
async def health_check():
return {
"status": "healthy",
"timestamp": datetime.datetime.now().isoformat(),
"service": "ai-trip-planner-api"
}
@app.post("/query")
async def query_travel_agent(query: QueryRequest):
try:
graph_agent = GraphBuilder(model_provider="groq")
# Collect streamed output
streamed_response: List[str] = []
async def capture_stream():
async for event in graph_agent.graph.astream(
{"messages": [query.question]},
):
if "messages" in event:
for msg in event["messages"]:
streamed_response.append(msg.content)
# Ensure the graph is built
graph_agent.build_graph()
await capture_stream()
return {"answer": streamed_response[-1] if streamed_response else "No response received."}
except Exception as e:
return JSONResponse(status_code=500, content={"error": str(e)})
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