Actix Log In Authentication

[CrimsonTide0]

Hi, I'm trying to figure out how to build a login authentication system in actix. I came across something promising which sends a notification asking for login credentials before allowing a user to enter a site and was looking to change it to one that operates through the submission of a form instead. How should I adjust the code to make it so that it operates off form data from a client?

[dependencies]
actix-web = "2.0.0"
actix-rt = "1.1.1"
actix-web-httpauth = "0.4.1"

use actix_web_httpauth::extractors::AuthenticationError;
use actix_web_httpauth::extractors::basic::{BasicAuth, Config};
use actix_web_httpauth::middleware::HttpAuthentication;
use actix_web::{web, App, HttpServer, Error, Responder, dev::ServiceRequest};

async fn index(info: web::Path<(u32, String)>) -> impl Responder
{
    format!("Hello {}! id:{}", info.1, info.0)
}

fn validate_credentials(user_id: &str, user_password: &str) -> Result<bool, std::io::Error>
{
    if user_id.eq("karl") && user_password.eq("password")
    {
        return Ok(true);
    }
    return Err(std::io::Error::new(std::io::ErrorKind::Other, "Authentication failed!"));
}

async fn basic_auth_validator(req: ServiceRequest, credentials: BasicAuth) -> Result<ServiceRequest, Error>
{
    let config = req
        .app_data::<Config>()
        .map(|data| data.get_ref().clone())
        .unwrap_or_else(Default::default);
    match validate_credentials(credentials.user_id(), credentials.password().unwrap().trim())
    {
        Ok(res) =>
        {
            if res == true
            {
                Ok(req)
            }
            else
            {
                Err(AuthenticationError::from(config).into())
            }
        }
        Err(_) => Err(AuthenticationError::from(config).into()),
    }
}

#[actix_rt::main]
async fn main() -> std::io::Result<()>
{
    HttpServer::new(move ||
    {
        let auth = HttpAuthentication::basic(basic_auth_validator);
        App::new()
            .wrap(auth)
            .route("/{id}/{name}/index.html", web::get().to(index))
    })
        .bind("127.0.0.1:8080")?
        .run()
        .await
}