use actix_web::{post, web, App, HttpServer};
use serde::Deserialize;

use log::warn;

#[derive(Deserialize)]
struct Info {
    name: String,
}

#[post("/")]
async fn index(web::Form(form): web::Form<Info>) -> String {
    warn!("name length: {}", form.name.len());
    format!("Welcome {}!", form.name)
}

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    std::env::set_var("RUST_LOG", "debug");
    env_logger::init();

    HttpServer::new(|| {
        let form_config = web::FormConfig::default()
            .limit(4096)
            .error_handler(|err, _| {
                warn!("Form error: {}", err);
                actix_web::error::InternalError::from_response(
                    err,
                    actix_web::HttpResponse::Conflict().finish(),
                )
                .into()
            });
        App::new()
            .app_data(form_config)
            .service(index)
            .wrap(actix_web::middleware::Logger::default())
    })
    .bind(("127.0.0.1", 1234))?
    .run()
    .await
}