use axum::{Router, routing::{get, post}, handler::Handler};

fn user_routes() -> Router {
    Router::new()
        .route("/", get(list_users).post(create_user))
        .route("/{id}", get(get_user).put(update_user).delete(delete_user))
}

fn post_routes() -> Router {
    Router::new()
        .route("/", get(list_posts))
        .route("/{id}", get(get_post))
}

fn app() -> Router {
    Router::new()
        .nest("/api/users", user_routes())
        .nest("/api/posts", post_routes())
}

use axum::{Router, middleware, http::Request, response::Response};

async fn logging_middleware(
    req: Request<axum::body::Body>,
    next: middleware::Next,
) -> Response {
    println!("{} {}", req.method(), req.uri());
    let response = next.run(req).await;
    println!("状态: {}", response.status());
    response
}

fn app() -> Router {
    Router::new()
        .route("/", get(|| async { "Hello" }))
        .layer(middleware::from_fn(logging_middleware))
}

use tower_http::cors::CorsLayer;

fn app() -> Router {
    Router::new()
        .route("/", get(|| async { "Hello" }))
        .layer(CorsLayer::permissive())
}

use tower_http::services::ServeDir;

fn app() -> Router {
    Router::new()
        .nest_service("/static", ServeDir::new("static"))
}