import { Request } from "express";
import jwt from "jsonwebtoken";
import { UnauthorizedError } from "../4-models/errors-model";
import Role from "../4-models/role-model";
import UserModel from "../4-models/user-model";


const secret = "You can not crack my password! Idan Laav"

function getNewToken(user: UserModel): string {
    const payload = { user };
    const token = jwt.sign(payload, secret, { expiresIn: "1d" });
    return token;
}

function verifyToken(request: Request): Promise<boolean> {
    return new Promise<boolean>((resolve, reject) => {
        const header = request.headers.authorization;
        if(!header) {
            reject(new UnauthorizedError("No token sent"));
            return
        }
        const token = header.substring(7)
        if(!token) {
            reject(new UnauthorizedError("No token sent"));
            return
        }
        jwt.verify(token, secret, (err, payload)=> {
            if(err) {
                reject(new UnauthorizedError("Invalid or expired token"));
                return
            }
            resolve(true)
        });
        return token;
    });
}

function getTokenRole(request: Request): Role {
    const header = request.headers.authorization;
    const token = header.substring(7);
    const payload = jwt.decode(token);
    const user = (payload as any).user[0];
    return user.Role
}


export default {
    getNewToken,
    verifyToken,
    getTokenRole
}