from fastapi import FastAPI, Response, Request, Header, Form, UploadFile, Body, BackgroundTasks
from pydantic import BaseModel
from fastapi.responses import FileResponse
from starlette.middleware.cors import CORSMiddleware
from starlette.responses import RedirectResponse

from cardtagger import cardtagger

import io
from PIL import Image
import os, time

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

# API_TOKEN = os.environ["API_TOKEN"]
API_TOKEN = '34dsadfF$$%#$TGREGEFGE%Q*)(*&%'


# ---------------------------------------------------------------------------
# - Token auth method -
# ---------------------------------------------------------------------------
def check_auth(authorization_header):
    if authorization_header == API_TOKEN :
        return True
    else:
        return False

# ---------------------------------------------------------------------------
# - Delete cache files after 30 days -
# ---------------------------------------------------------------------------
def delete_old_files():
    path = "./tmp"
    now = time.time()

    for filename in os.listdir(path):
        filestamp = os.stat(os.path.join(path, filename)).st_mtime
        filecompare = now - 14 * 86400
        if filestamp < filecompare:
            print(filename)
            os.remove(os.path.join(path, filename))

@app.on_event("startup")
def startup_event() :
    '''
    Create out dir
    '''
    if not os.path.exists("/tmp"):
        os.makedirs("/tmp")

@app.get("/")
async def root():
    response = RedirectResponse(url='/docs')
    
    return response

@app.post("/cardtagger")
async def resolution(request : Request, background_tasks: BackgroundTasks, response: Response, data: UploadFile = Form(...)):

    authorization_token = request.headers.get("Authorization", None)

    # check_token = check_auth(authorization_token)
    check_token = True

    if check_token:

        image = io.BytesIO(await data.read())
        image.seek(0)

        result = cardtagger(image.read())

        background_tasks.add_task(delete_old_files)

        return result


    else :
        response.status_code = 401
        return response



#uvicorn server:app --host 0.0.0.0 --port 5050 --workers 4