import { Request, RequestHandler } from "express";
import { getRedisClient } from "../clients/db/RedisDbProvider";
import { getAuthModes, getDoorSettingString } from "../util/EnvConfigUtil";
import { IAuthMode } from "../types/IAuthMode";
import { IDoorConfig } from "../types/IDoorConfig";

const client = await getRedisClient();

export const HandleAuthMode: RequestHandler = async (req, res, next) => {
  const authModes = getAuthModes(req.params.id);

  if (authModes.length === 0) {
    res.status(404).json({ msg: `Unknown door ${req.params.id}` });
    return;
  }

  const isAuthorized = authModes.some((mode) => {
    switch(mode) {
      case IAuthMode.FIXED_PIN: return handleFixedPinAuth(req)
      default: return false;
    }
  });

  if (!isAuthorized) {
    res.status(401).json({ msg: 'Unauthorized' });
    return;
  }

  next();
}

const handleFixedPinAuth = (req: Request): boolean => {
  const fixedPin = getDoorSettingString(req.params.id, IDoorConfig.FIXED_PIN);
  return fixedPin !== undefined && req.query['key'] === fixedPin;
}