⚡ Upgrade design & moved backend here & login and settings work with api

app/api/auth/login/route.ts

@@ -0,0 +1,71 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { getDBConnexion } from '../../utils';
+import { compareSync } from 'bcrypt';
+
+type RequestBody = {
+	username?: string;
+	password?: string;
+};
+
+export const POST = async (req: NextRequest) => {
+	const { username, password }: RequestBody = await req.json();
+
+	if (!username || !password) {
+		return NextResponse.json(
+			{
+				error: true,
+				message: 'Missing username or password field in request body',
+			},
+			{
+				status: 400,
+			}
+		);
+	}
+
+	try {
+		const pool = getDBConnexion();
+
+		const { rows } = await pool.query(
+			`SELECT * FROM "user" WHERE "username"=$1 LIMIT 1;`,
+			[username]
+		);
+
+		await pool.end();
+
+		if (rows.length != 1) {
+			return NextResponse.json({
+				error: true,
+				message: 'User not found',
+			});
+		}
+
+		const { id, password: hashedPassword } = rows[0];
+
+		if (!compareSync(password, hashedPassword)) {
+			return NextResponse.json(
+				{
+					error: true,
+					message: 'Wrong password',
+				},
+				{
+					status: 403,
+				}
+			);
+		}
+
+		return NextResponse.json({
+			token: id,
+		});
+	} catch (error) {
+		console.error(error);
+		return NextResponse.json(
+			{
+				error: true,
+				message: 'Internal error',
+			},
+			{
+				status: 500,
+			}
+		);
+	}
+};