spa.rs
| 1 | use axum::http::Uri; |
| 2 | use axum::http::{HeaderMap, Method, StatusCode, header}; |
| 3 | use axum::response::{IntoResponse, Response}; |
| 4 | |
| 5 | const DEV_HINT: &str = r#"<!doctype html> |
| 6 | <html lang="en"><head><meta charset="utf-8"><title>filebrowser-ng</title></head> |
| 7 | <body style="font-family:system-ui;display:grid;place-items:center;min-height:100vh;margin:0;background:#f6f7f9"> |
| 8 | <div style="max-width:520px;padding:24px;border:1px solid #e5e7eb;border-radius:12px;background:#fff"> |
| 9 | <h1>filebrowser-ng</h1> |
| 10 | <p>The frontend has not been built yet.</p> |
| 11 | <p>In development, run <code>just dev-web</code> in a second terminal and open |
| 12 | <code>http://localhost:8080</code> (Trunk serves the app and proxies <code>/api</code> to this backend).</p> |
| 13 | <p>If you hit this page directly from the backend, make sure Trunk's output |
| 14 | directory is visible — the server looks in <code>target/web</code> or <code>$FBNG_DIST</code>.</p> |
| 15 | <p>For the production single binary: <code>just build</code>.</p> |
| 16 | </div></body></html>"#; |
| 17 | |
| 18 | /// Serve the frontend: static assets, with a fallback to index.html so that |
| 19 | /// client-side routes (e.g. `/s/<token>`) work. |
| 20 | pub(super) async fn fallback(method: Method, uri: Uri, headers: HeaderMap) -> Response { |
| 21 | let path = uri.path(); |
| 22 | if path.starts_with("/api/") { |
| 23 | return (StatusCode::NOT_FOUND, "unknown endpoint").into_response(); |
| 24 | } |
| 25 | if method != Method::GET && method != Method::HEAD { |
| 26 | return StatusCode::METHOD_NOT_ALLOWED.into_response(); |
| 27 | } |
| 28 | |
| 29 | let rel = path.trim_start_matches('/'); |
| 30 | let asset = if rel.is_empty() { |
| 31 | crate::assets::get_asset("index.html") |
| 32 | } else { |
| 33 | crate::assets::get_asset(rel) |
| 34 | }; |
| 35 | |
| 36 | match asset { |
| 37 | Some((bytes, mime, cache, etag)) => { |
| 38 | // The embedded assets carry a content hash, so a repeat visit can |
| 39 | // be answered without sending the body again. |
| 40 | if let Some(tag) = &etag |
| 41 | && headers |
| 42 | .get(header::IF_NONE_MATCH) |
| 43 | .and_then(|v| v.to_str().ok()) |
| 44 | .is_some_and(|v| v.split(',').any(|t| t.trim() == tag || t.trim() == "*")) |
| 45 | { |
| 46 | return ( |
| 47 | StatusCode::NOT_MODIFIED, |
| 48 | [(header::CACHE_CONTROL, cache), (header::ETAG, tag.clone())], |
| 49 | ) |
| 50 | .into_response(); |
| 51 | } |
| 52 | let mut res = ( |
| 53 | [(header::CONTENT_TYPE, mime), (header::CACHE_CONTROL, cache)], |
| 54 | bytes, |
| 55 | ) |
| 56 | .into_response(); |
| 57 | if let Some(tag) = etag |
| 58 | && let Ok(v) = tag.parse() |
| 59 | { |
| 60 | res.headers_mut().insert(header::ETAG, v); |
| 61 | } |
| 62 | res |
| 63 | } |
| 64 | None => match crate::assets::get_asset("index.html") { |
| 65 | Some((bytes, mime, _, _)) => ( |
| 66 | [ |
| 67 | (header::CONTENT_TYPE, mime), |
| 68 | (header::CACHE_CONTROL, "no-cache".to_string()), |
| 69 | ], |
| 70 | bytes, |
| 71 | ) |
| 72 | .into_response(), |
| 73 | None => DEV_HINT.into_response(), |
| 74 | }, |
| 75 | } |
| 76 | } |
| 77 |