loadstar/examples/hello_world.rs

use std::{collections::HashMap, sync::Arc, thread::sleep, time::Duration};

use loadstar::{controller::Controller, entities::request::Url, router::Router, template::Template, utilities::{async_block::run_async, responses::{respond_not_found, respond_template}}};
use maud::html;
use tiny_http::Request;

async fn example_async() {
    sleep(Duration::from_secs(1));
}

struct MainRouter {
    routes: HashMap<String, fn(Request)>
}

impl Router for MainRouter {
    fn new() -> Self {
        MainRouter {
            routes: HashMap::new(),
        }
    }

    fn route(&self, request: Request) {
        match self.routes.get(&request.get_url_without_parameters()) {
            Some(handler) => handler(request),
            None => respond_not_found(request),
        }
    }

    fn add_route(&mut self, route: &str, route_function: fn(Request)) {
        self.routes.insert(route.to_string(), route_function as fn(Request));   
    }
}

struct MainTemplate;

impl Template for MainTemplate {
    fn render(&self) -> maud::Markup {
        html! {
            h1 {"Hello World"}
        }
    }
}

struct MainController;

impl MainController {
    fn index_route(request: Request) {
        run_async(example_async());
        respond_template(request, MainTemplate {}) 
    }
}

impl Controller for MainController {
    fn register_routes(&self, router: &mut impl Router) {
        router.add_route("/", MainController::index_route)
    }
}


#[tokio::main]
async fn main() {
    let server = tiny_http::Server::http("0.0.0.0:8000").unwrap();

    let mut main_router = MainRouter::new();


    main_router.add_controller(MainController {});

    
    let router = Arc::new(main_router);

    loop {
        let request = match server.recv() {
            Ok(rq) => rq,
            Err(e) => {
                println!("error: {}", e);
                break;
            }
        };

        let router_clone = Arc::clone(&router);

        tokio::spawn(async move {
            router_clone.route(request);
        });
    }
}