use rocket::fs::NamedFile;
use rocket::http::Method;
use rocket_cors::{AllowedHeaders, AllowedOrigins, Cors, CorsOptions};
use std::io;
use std::path::{Path, PathBuf};
use local_ip_address::local_ip;


pub fn make_cors() -> Cors {
    let allowed_origins = AllowedOrigins::some_exact(&[
        "http://localhost:3000",
        "http://127.0.0.1:3000",
        &format!("http://{}:8000",local_ip().unwrap())[..],
        "http://localhost:8000",
        "http://0.0.0.0:8000",
    ]);
    
    CorsOptions {
        allowed_origins,
        allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(), // 1.
        allowed_headers: AllowedHeaders::some(&[
            "Authorization",
            "Accept",
            "Access-Control-Allow-Origin",
        ]),
        allow_credentials: true,
        ..Default::default()
    }
    .to_cors()
    .expect("error while building CORS")
}

#[get("/<file..>", rank = 10)]
pub async fn files(file: PathBuf) -> Option<NamedFile> {
    NamedFile::open(Path::new("../frontend/build/").join(file))
        .await
        .ok()
}

#[get("/")]
pub async fn index() -> io::Result<NamedFile> {
    NamedFile::open("../frontend/build/index.html").await
}