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use axum::{
extract::{Extension, Path},
response::{IntoResponse, Response},
};
use std::{collections::HashMap, sync::Arc};
#[derive(Debug, Clone, Copy)]
struct Resource {
data: &'static [u8],
mime: &'static str,
}
impl IntoResponse for &Resource {
fn into_response(self) -> Response {
(
axum::http::StatusCode::OK,
[("Content-Type", self.mime)],
self.data,
)
.into_response()
}
}
// TODO replace with the "phf" crate someday
type ResourceTable = Arc<HashMap<&'static str, Resource>>;
#[tracing::instrument]
async fn map_to_static(
Path(name): Path<String>,
Extension(resources): Extension<ResourceTable>,
) -> Response {
tracing::debug!("Searching for {} in the resource table...", name);
match resources.get(name.as_str()) {
Some(res) => res.into_response(),
None => {
#[cfg(debug_assertions)]
tracing::error!("Not found");
(
axum::http::StatusCode::NOT_FOUND,
[("Content-Type", "text/plain")],
"Not found. Sorry.".as_bytes(),
)
.into_response()
}
}
}
pub fn router<St: Clone + Send + Sync + 'static>() -> axum::Router<St> {
let resources: ResourceTable = {
let mut map = HashMap::new();
macro_rules! register_resource {
($map:ident, $prefix:expr, ($filename:literal, $mime:literal)) => {{
$map.insert($filename, Resource {
data: include_bytes!(concat!($prefix, $filename)),
mime: $mime
})
}};
($map:ident, $prefix:expr, ($filename:literal, $mime:literal), $( ($f:literal, $m:literal) ),+) => {{
register_resource!($map, $prefix, ($filename, $mime));
register_resource!($map, $prefix, $(($f, $m)),+);
}};
}
register_resource! {
map,
concat!(env!("OUT_DIR"), "/", "companion", "/"),
("index.html", "text/html; charset=\"utf-8\""),
("main.js", "text/javascript"),
("micropub_api.js", "text/javascript"),
("indieauth.js", "text/javascript"),
("base64.js", "text/javascript"),
("style.css", "text/css")
};
Arc::new(map)
};
axum::Router::new().route(
"/{filename}",
axum::routing::get(map_to_static).layer(Extension(resources)),
)
}
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