import crypto from 'crypto';

import { sign } from './jwt';
import { LOGIN_VALID_TIME, RESET_VALID_MINUTES } from '../constants/env';
import { Status } from '../constants/auth';

const parseLoginValid = () => {
    const [number, unit] = process.env.LOGIN_VALID_TIME || LOGIN_VALID_TIME;
    return [
        unit === 'd' ? parseInt(number) : 1,
        unit === 'h' ? parseInt(number) : (unit === 'm' && 1) || 24,
        unit === 'm' ? parseInt(number) : 60,
    ];
};

export const generateLoginToken = (sub: string, status: Status) => {
    const [days, hours, mins] = parseLoginValid();
    return sign({
        sub,
        status,
        exp: Date.now() + days * hours * mins * 60 * 1000,
    });
};

export const generateResetToken = (sub: string) => {
    const hoursValid = <number>(process.env.RESET_VALID_HOURS || RESET_VALID_MINUTES);
    const key = crypto.randomBytes(16).toString('hex');
    const token = sign({
        sub,
        key,
        exp: Date.now() + hoursValid * 60 * 60 * 1000,
    });
    return { key, token };
};