Define the routes

You will use the following routes in your application:

• / - the home page, where you will determine if a user is authenticated and prompt them to authenticate if not
• /authenticate - to display a page where the user can enter their phone number
• /verify - when the user has entered their phone number, redirect here to start the verification process and display a page where they can enter the code that they receive
• /check-code - when the user has entered the verification code, this endpoint will use the Verify API to check if the code that they entered is the one that they were sent
• /logout - to remove any session details and send the user back to the home page

Create these routes in server.py, immediately before the code that initializes and runs the server:

@app.route("/")
def index():
    return "/"

@app.route("/authenticate")
def authenticate():
    return render_template("authenticate.html")

@app.route("/verify", methods=["POST"])
def verify_user():
    return "/verify"

@app.route("/check-code", methods=["POST"])
def check_code():
    return "/check-code"

@app.route("/logout")
def cancel():
    return render_template("index.html", brand=VONAGE_BRAND_NAME)