-success
-email already exists
-username already exists

from flask import Flask, render_template, request, redirect, url_for

import db.db_mgmt as db_mgmt

app = Flask(__name__)


@app.route('/')
@app.route('/signup')
def signup():
    return render_template('signup.html', message=result)


@app.route('/submit_registration', methods=['POST'])
def add_user():
    username = request.form['username']
    first = request.form['first']
    last = request.form['last']
    email = request.form['email']
    password = request.form['password']
    result = db_mgmt.add_user(username, first, last, email, password)

    if result == 'success':
        return redirect(url_for('login'))
    else:
        return redirect(url_for('signup', message = result))


@app.route('/login')
def login():
    return render_template('login.html')


@app.route('/home', methods=['POST'])
def homepage():
    return "Welcome to your homepage"


@app.route('/validate_login', methods=['POST'])
def validate_login():
    username = request.form['username']
    password = request.form['password']

    if db_mgmt.login():
        return redirect(url_for('homepage'))
    else:
        return redirect(url_for('login', message = 'Invalid Login'))


app.run(debug=True, host='0.0.0.0', port=5000)

return render_template('signup.html', message=result)

return render_template('signup.html', message=result)
NameError: name 'result' is not defined