# libraries imports
from fastapi import  FastAPI, HTTPException, APIRouter
from fastapi.middleware.cors import CORSMiddleware
import asyncio
from fastapi import HTTPException
from asyncio import TimeoutError

# files imports
from apis.reddit_apis import router as reddit_router
from apis.user import router as user_router
from databases.firebase_db import initialize_firebase
from reddit.reddit_gemini import getKeywords
from utils import time_execution

# os.environ["HF_HOME"] = "./cache"

app = FastAPI(
    debug=True,
    title="Analysis Server",
    consumes=["application/x-www-form-urlencoded", "multipart/form-data"],
    docs_url='/swagger'
)

router = APIRouter()
# Assuming you have defined the necessary imports, e.g., config, getKeywords, api_key, api_key2

# CORS configuration
origins = [
    "*",
    # Add more origins as needed
]

app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,  # Allows specified origins
    allow_credentials=True,
    allow_methods=["*"],     # Allows all HTTP methods
    allow_headers=["*"],     # Allows all headers
)
initialize_firebase()

@router.get("/")
@time_execution
def read_root():
            
    return {"message": "Hello, World!"}


# Timeout handler: check if getKeywords takes too long
async def fetch_keywords_with_timeout(user_query: str, timeout: int = 60, retry: bool = True):
    try:
        # Simulate the getKeywords function with a timeout using asyncio.wait_for
        keywords = await asyncio.wait_for(asyncio.to_thread(getKeywords, user_query), timeout=timeout)
        return keywords
    except TimeoutError:
        print("Timeout exceeded, switching to api_key2")
        if retry:
            # Timeout exceeded, switch to api_key2 and retry fetching keywords
            read_root()  # Switch API key
            # Retry fetching keywords
            return await fetch_keywords_with_timeout(user_query, timeout, retry=False)  # Set retry to False to prevent infinite loop
        else:
            # If we already tried once, handle as a failure or return a fallback response
            raise HTTPException(status_code=504, detail="Request timed out even after retrying")

@router.get("/keywords")
@time_execution
async def fetch_keywords(user_query: str):
    if not user_query:
        raise HTTPException(status_code=400, detail="User query must not be empty")

    # Fetch keywords with a 10-second timeout and retry mechanism
    keywords = await fetch_keywords_with_timeout(user_query=user_query)
    return keywords


# if __name__ == "__main__":
#     import uvicorn
#     uvicorn.run("main:app", host="127.0.0.23", workers=1,reload=True,port=786)

app.include_router(router)
app.include_router(reddit_router)
app.include_router(user_router)