import * as api from '../../client/src/api';
import { EndpointError, EndpointHandler, catchUnhandledErrors } from './types';
import Knex from 'knex';

import { sha512 } from 'js-sha512';

export const RegisterUserEndpointHandler: EndpointHandler = async (req: any, res: any, knex: Knex) => {
    if (!api.checkRegisterUserRequest(req)) {
        const e: EndpointError = {
            internalMessage: 'Invalid RegisterUser request: ' + JSON.stringify(req.body),
            httpStatus: 400
        };
        throw e;
    }
    const reqObject: api.RegisterUserRequest = req.body;

    console.log("Register User: ", reqObject);

    await knex.transaction(async (trx) => {
        try {
            // FIXME check if the user already exists

            // Create the new user.
            const passwordHash = sha512(reqObject.password);
            const userId = (await trx('users')
                .insert({
                    email: reqObject.email,
                    passwordHash: passwordHash,
                })
                .returning('id') // Needed for Postgres
            )[0];

            // Respond to the request.
            res.status(200).send();

        } catch (e) {
            catchUnhandledErrors(e);
            trx.rollback();
        }
    })
}