index.ts

import express, { Request, Response } from "express";
import CORS from "cors";
import mongoose from "mongoose";
import { User } from "./model/user";
import jwt from "jsonwebtoken";
import dotenv from "dotenv";
import path from "path";
import { decodedTextSpanIntersectsWith } from "typescript";
dotenv.config({ path: "./config.env" });

const app = express();
const url = process.env.URL;
const token_key = process.env.TOKEN_KEY;

export type FormDataType = {
	name?: string;
	mail: string;
	password: string;
	token: string;
};
try {
	mongoose
		.connect(url as string)
		.then(() => {
			console.log("Connected to the database ");
		})
		.catch((err) => {
			throw err;
		});
} catch (error) {
	console.log("error message: ", error);
}

app.use(CORS());
app.use(express.json());
if (process.env.NODE_ENV == "production") {
	app.use(express.static(path.join(__dirname, "dist/public")));
}

app.all("*", (req: Request, res: Response) => {
	res.sendFile(path.join(__dirname, "./dist/public/static/index.html"));
});

app.post("/signup", (req: Request, res: Response) => {
	const signUpFormData: FormDataType = req.body;
	const query = User.where({ mail: signUpFormData.mail });
	query.findOne((err: any, doc: any) => {
		if (!doc) {
			const token = jwt.sign(
				{ id: signUpFormData.mail },
				token_key as string,
				{
					algorithm: "HS256",
					expiresIn: "2h",
				}
			);
			const userData = { ...signUpFormData, token: token };
			const newUser: any = User.create(userData);
			console.log("form data", signUpFormData);
			res.status(201).send(token);
		} else {
			console.log(signUpFormData);
			res.status(400).send("<h1> Mail exists </h1>");
		}
	});
});

app.post("/login", (req: Request, res: Response) => {
	const logInFormData: FormDataType = req.body;
	const query = User.where({ mail: logInFormData.mail });
	query.findOne((err: any, doc: any) => {
		if (doc) {
			console.log(doc);

			if (doc.password === logInFormData.password) {
				try {
					const token = jwt.verify(
						logInFormData.token,
						token_key as string
					);
					res.status(201).send(token);
				} catch (err) {
					res.status(400).send("Token required or Expired token");
				}
			}
		} else {
			res.status(400).send("<h1>Login failed</h1>");
		}
	});
});

app.listen(process.env.PORT || 3000, () => {
	console.log("Server is listening!");
});