import CookieStore from './CookieStore';
import Cookie from './Cookie';
import * as jwt from 'jsonwebtoken';

export default class JWTStore implements CookieStore {
    constructor(private key: string) {}

    async get(key: string): Promise<Cookie> {
        const cookie = new Cookie();
        try {
            const result = jwt.verify(key, this.key);
            cookie.expires = new Date(result.exp * 1000);
            delete result['iat'];
            delete result['exp'];
            cookie.data = result;
            cookie.key = key;
            return cookie;
        } catch(e) {
            return null;
        }
    }

    async set(cookie: Cookie): Promise<void> {
        const result = jwt.sign(
            cookie.data || {},
            this.key,
            {
                expiresIn: Math.round((cookie.expires.getTime() - Date.now()) / 1000),
            }
        );
        cookie.key = result;
    }
    async remove(cookie: Cookie): Promise<void> {
    }
}