MuDBase/server/db/User.ts

import * as api from '../../client/src/api/api';
import Knex from 'knex';

import { sha512 } from 'js-sha512';
import { DBErrorKind, DBError } from '../endpoints/types';

export async function createUser(user: api.User, knex: Knex): Promise<number> {
    return await knex.transaction(async (trx) => {
        // check if the user already exists
        const newUser = (await trx
            .select('id')
            .from('users')
            .where({ email: user.email }))[0];
        if (newUser) {
            let e: DBError = {
                name: "DBError",
                kind: DBErrorKind.ResourceConflict,
                message: "User with given e-mail already exists.",
            }
            throw e;
        }

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

        return userId;
    })
}