from fastapi import FastAPI, HTTPException, File, UploadFile
from fastapi.middleware.cors import CORSMiddleware
from typing import Annotated
from pydantic import BaseModel
import uvicorn
from fastapi import FastAPI, UploadFile, File 
from typing import Union 
import json 
import csv
from modeles import bert


app = FastAPI()

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)


@app.on_event("startup")
async def startup_event():
    print("start")


@app.get("/")
async def root():
    return {"message": "Hello World"}


@app.post("/uploadfile/")
async def create_upload_file(file: UploadFile, texte: str, model: str):

    return {"model": model, "texte": texte, "filename": file.filename}


@app.post("/contextText/")
async def create_upload_file(context: str, texte: str, model: str):

    return {"model": model, "texte": texte, "context": context}


@app.post("/withoutFile/")
async def create_upload_file(texte: str, model: str):

    return {"model": model, "texte": texte}

# # Modèle Pydantic pour les requêtes BERT
# class BERTRequest(BaseModel):
#     context: str
#     question: str

@app.post("/bert/")
async def qabert(context: str, question: str):
    try:
        bert_answer = bert(context, question)
        if bert_answer:
            return bert_answer
        else:
            raise HTTPException(status_code=404, detail="No answer found")
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"An error occurred: {str(e)}")


def extract_data(file: UploadFile) -> Union[str, dict, list]:
    if file.filename.endswith(".txt"):
        data = file.file.read()
        return data.decode("utf-8")
    elif file.filename.endswith(".csv"):
        data = file.file.read().decode("utf-8")
        rows = data.split("\n")
        reader = csv.DictReader(rows)
        return [dict(row) for row in reader]
    elif file.filename.endswith(".json"):
        data = file.file.read().decode("utf-8")
        return json.loads(data)
    else:
        return "Invalid file format"