Constant AUTH_GUARD 

pub const AUTH_GUARD: &str = r#"use rocket::http::Status;
use rocket::request::{FromRequest, Outcome, Request};

use crate::auth::validate_token;

#[allow(dead_code)]
pub struct AuthClaims {
    pub credentials: String,
}

#[rocket::async_trait]
impl<'r> FromRequest<'r> for AuthClaims {
    type Error = AuthError;

    async fn from_request(req: &'r Request<'_>) -> Outcome<Self, Self::Error> {
        let cookie = req.cookies().get("auth_token");

        match cookie {
            Some(c) => match validate_token(c.value()).await {
                Ok(credentials) => Outcome::Success(AuthClaims { credentials }),
                Err(_) => {
                    Outcome::Error((Status::Unauthorized, AuthError::InvalidToken(())))
                }
            },
            None => Outcome::Error((Status::Unauthorized, AuthError::MissingToken)),
        }
    }
}

#[derive(Debug)]
pub enum AuthError {
    MissingToken,
    InvalidToken(()),
}
"#;