import { Request, Response } from "express";
import { JWTHelper } from "../helpers/jwtHelper";
import { JWTToken } from "../type/jwtTypes";
import InternalException from "../exceptions/internalException";
import RefreshCommandHandler from "../command/refreshCommandHandler";
import { CreateRefreshCommand } from "../command/refreshCommand";
import speakeasy from "speakeasy";
import UnauthorizedRequestException from "../exceptions/unauthorizedRequestException";
import QRCode from "qrcode";
import { CreateResetCommand, DeleteResetCommand } from "../command/resetCommand";
import ResetCommandHandler from "../command/resetCommandHandler";
import MailHelper from "../helpers/mailHelper";
import ResetService from "../service/resetService";
import UserService from "../service/userService";
import { CLUB_NAME } from "../env.defaults";
import PermissionHelper from "../helpers/permissionHelper";
import RolePermissionService from "../service/rolePermissionService";
import UserPermissionService from "../service/userPermissionService";
import { UpdateUserSecretCommand } from "../command/userCommand";
import UserCommandHandler from "../command/userCommandHandler";

/**
 * @description request totp reset
 * @param req {Request} Express req object
 * @param res {Response} Express res object
 * @returns {Promise<*>}
 */
export async function startReset(req: Request, res: Response): Promise<any> {
  let origin = req.headers.origin;
  let username = req.body.username;

  let { mail } = await UserService.getByUsername(username);

  var secret = speakeasy.generateSecret({ length: 20, name: `Mitgliederverwaltung ${CLUB_NAME}` });

  let createReset: CreateResetCommand = {
    username: username,
    mail: mail,
    secret: secret.base32,
  };
  let token = await ResetCommandHandler.create(createReset);

  // sendmail
  let mailhelper = new MailHelper();
  await mailhelper.sendMail(
    mail,
    `Email Bestätigung für Mitglieder Admin-Portal von ${CLUB_NAME}`,
    `Öffne folgenden Link: ${origin}/reset/reset?mail=${mail}&token=${token}`
  );

  res.sendStatus(204);
}

/**
 * @description verify reset link
 * @param req {Request} Express req object
 * @param res {Response} Express res object
 * @returns {Promise<*>}
 */
export async function verifyReset(req: Request, res: Response): Promise<any> {
  let mail = req.body.mail;
  let token = req.body.token;

  let { secret } = await ResetService.getByMailAndToken(mail, token);

  const url = `otpauth://totp/Mitgliederverwaltung ${CLUB_NAME}?secret=${secret}`;

  QRCode.toDataURL(url)
    .then((result) => {
      res.json({
        dataUrl: result,
        otp: secret,
      });
    })
    .catch((err) => {
      throw new InternalException("QRCode not created", err);
    });
}

/**
 * @description finishReset
 * @param req {Request} Express req object
 * @param res {Response} Express res object
 * @returns {Promise<*>}
 */
export async function finishReset(req: Request, res: Response): Promise<any> {
  let mail = req.body.mail;
  let token = req.body.token;
  let totp = req.body.totp;

  let { secret, username } = await ResetService.getByMailAndToken(mail, token);

  let valid = speakeasy.totp.verify({
    secret: secret,
    encoding: "base32",
    token: totp,
    window: 2,
  });

  if (!valid) {
    throw new UnauthorizedRequestException("Token not valid or expired");
  }

  let { id } = await UserService.getByUsername(username);

  let updateUserSecret: UpdateUserSecretCommand = {
    id,
    secret,
  };
  await UserCommandHandler.updateSecret(updateUserSecret);

  let accessToken = await JWTHelper.buildToken(id);

  let refreshCommand: CreateRefreshCommand = {
    userId: id,
  };
  let refreshToken = await RefreshCommandHandler.create(refreshCommand);

  let deleteReset: DeleteResetCommand = {
    mail: mail,
    token: token,
  };
  await ResetCommandHandler.deleteByTokenAndMail(deleteReset);

  res.json({
    accessToken,
    refreshToken,
  });
}