# Amper
## _Pack of macros for web-programming in Rust_

A simple package with attributes to bind function patterns to the framework `actix-web`.

    #[GET("/")]
    fn index() {
        "nice"
    }

turn into

    #[get("/")]
    async fn index() -> impl Responder {
        "nice"
    }

There are 3 attributes in total

    #[GET("/"]
    #[POST("/")]
    #[SERVER]

POST need set to POST request
(There is also a special type for handling structs as post requests, which is actix_web::web::Form<T>;)

    #[derive(Debug)]
    #[derive(Deserialize)]  // (yea, use serde)
    struct User {
        username: String,
        email: String,
        password: String
    }

    #[POST("/")]
    fn index_analyz(data: Post<User>) {
        println!("{:#?}", data);
        "nice"
    }

SERVER set to main of your site

    #[SERVER]
    fn main() {
        HttpServer::new(|| {
            App::new()
                .service(index)
                .service(index_analyz)
        })
        .bind(("127.0.0.1", 8080))?
        .run()
        .await
    }

And a little with macros setting HttpResponce for the kind of response body.

    #[derive(Template)]
    #[template(path="../static/index.html")] // askama template render engine
    struct MyPage {
        content: String
    }

    #[GET("/a")]
    fn foo() {
        html!("<h1>html text!</h1>")
        load!("compile-time static load of html file use include_str! macro")
        template!(MyPage { content: "nice".to_string() })
        // expression of struct. implemented for .render() in askama engine
    }

and a one function for parse urls with regex (must run in tokio runtime, what reimported in crate)

    let prs; {
        let tokioRuntime = Runtime::new().unwrap();
        prs = tokioRuntime.spawn(parsing(
            "https://your/page/to/parse",
            "<h1>[^<]+</h1>|<h2>[^<]+</h2>|<h3>[^<]+</h3>|<h4>[^<]+</h4>")
        ).await.unwrap();
    }
    let prs = prs.unwrap();
    println!("{:?}", prs);

## Reimported crates

    actix-web = "3"
    regex = "1.5.4"
    tokio = { version = "1", features = ["rt", "rt-multi-thread"] }
    actix-files = "0.3"