#![feature(proc_macro_hygiene, decl_macro)]

#[macro_use]
extern crate rocket;
extern crate async_trait;

use rocket::fairing::{Fairing, Info, Kind};
use rocket::http::Header;
use rocket::{Request, Response};

pub struct CORS();

#[async_trait]
impl Fairing for CORS {
    fn info(&self) -> Info {
        Info {
            name: "Add CORS headers to requests",
            kind: Kind::Response,
        }
    }
    #[inline]
    async fn on_response<'r>(&self, _req: &'r Request<'_>, res: &mut Response<'r>) {
        res.set_header(Header::new("Access-Control-Allow-Origin", "*"));
        res.set_header(Header::new(
            "Access-Control-Allow-Methods",
            "HEAD, GET, POST, PUT, PATCH, DELETE, OPTIONS",
        ));
        res.set_header(Header::new("Access-Control-Allow-Headers", "*"));
        res.set_header(Header::new("Access-Control-Allow-Credentials", "true"));
    }
}