oralify-backend/controllers/getUsername.ts

Express Node CRUD backend for Oralify

import { Request, Response } from "express";
import { supabase } from "../supabase";

const generateUniqueIdentifier = async (fullName: string, speciality: string) => {
    let userName
    let num = 1;

    const nameLowerCase = fullName.toLowerCase()
    const words = nameLowerCase.split(" ");
    const name = words[0];
    const initialLastName = words[1] ? words[1].charAt(0).toUpperCase() : '';
    const baseUserName = speciality ? `${name}${initialLastName}${speciality}`: `${name}${initialLastName}`;

    userName = baseUserName

    while (true) {
        const { data } = await supabase
            .from('users')
            .select('username')
            .eq('username', userName);

        if (!data || data.length === 0) {
            return userName;
        }

        userName = `${baseUserName}${num}`;
        num++;
    }
};
export const getUsername = async (req: Request, res: Response): Promise<void> => {

    try {
        const { fullName, speciality } = req.body;
        if (!fullName){ res.status(404).send('Fullname required'); return }
        const uniqueIdentifier = await generateUniqueIdentifier(fullName, speciality);
        res.status(200).json( uniqueIdentifier );
    } catch (err) {
        res.status(500).json({ err });
    }
}