import * as argon2 from "argon2";
import { IsEmail, IsOptional, IsString } from 'class-validator';
import { getConnectionManager } from 'typeorm';
import { InvalidCredentialsError, PasswordNeededError, UserNotFoundError } from '../../errors/AuthError';
import { UsernameOrEmailNeededError } from '../../errors/UserErrors';
import { JwtCreator } from '../../JwtCreator';
import { User } from '../entities/User';
import { Auth } from '../responses/ResponseAuth';

export class CreateAuth {
    @IsOptional()
    @IsString()
    username?: string;
    @IsString()
    password: string;
    @IsOptional()
    @IsEmail()
    @IsString()
    email?: string;

    public async toAuth(): Promise<Auth> {
        let newAuth: Auth = new Auth();

        if (this.email === undefined && this.username === undefined) {
            throw new UsernameOrEmailNeededError();
        }
        if (!this.password) {
            throw new PasswordNeededError();
        }
        const found_user = await getConnectionManager().get().getRepository(User).findOne({ relations: ['groups', 'permissions'], where: [{ username: this.username }, { email: this.email }] });
        if (!found_user) {
            throw new UserNotFoundError();
        }
        if (!(await argon2.verify(found_user.password, this.password + found_user.uuid))) {
            throw new InvalidCredentialsError();
        }

        //Create the access token
        const timestamp_accesstoken_expiry = Math.floor(Date.now() / 1000) + 5 * 60
        newAuth.access_token = JwtCreator.createAccess(found_user, timestamp_accesstoken_expiry);
        newAuth.access_token_expires_at = timestamp_accesstoken_expiry
        //Create the refresh token
        const timestamp_refresh_expiry = Math.floor(Date.now() / 1000) + 10 * 36000
        newAuth.refresh_token = JwtCreator.createRefresh(found_user, timestamp_refresh_expiry);
        newAuth.refresh_token_expires_at = timestamp_refresh_expiry
        return newAuth;
    }
}