from fastapi import APIRouter

from datetime import datetime
from os.path import exists

from fastapi.responses import HTMLResponse

router = APIRouter()

file_path = "bettwaage.csv"


def add_line_to_history(line: str) -> None:
    with open(file_path, "+a", encoding="UTF-8") as fp:
        fp.write(f"{line}\n")


@router.get("/file")
async def get_file():
    with open(file_path, "r", encoding="UTF-8") as fp:
        return HTMLResponse("\n".join(fp.readlines()))


@router.post("/add")
async def add_weight(tl: int, tr: int, bl: int, br: int):
    sum = tl + tr + bl + br
    add_line_to_history(f"{str(datetime.now())};{tl};{tr};{bl};{br};{sum};")


if not exists(file_path):
    add_line_to_history("timestamp;tl;tr;bl;br;total;")