lmno: Generalize middleware to not be specific to empires

[lmno-server] / lmno.js

diff --git a/lmno.js b/lmno.js
index c990cac3a290be99bf16d57f7d581442970bf4f4..61c7f5cce5eed2f4cb84c1dd75d4e779ff9888b1 100644 (file)
--- a/lmno.js
+++ b/lmno.js
@@ -136,14 +136,15 @@ app.get('/[a-zA-Z0-9]{4}', (request, response) => {
 });
 
 /* LMNO middleware to lookup the game. */
-app.use('/empires/:game_id([a-zA-Z0-9]{4})', (request, response, next) => {
+app.use('/:engine([^/]+)/:game_id([a-zA-Z0-9]{4})', (request, response, next) => {
+  const engine = request.params.engine;
   const game_id = request.params.game_id;
   const canon_id = lmno_canonize(game_id);
 
   /* Redirect user to page with the canonical ID in it. */
   if (game_id !== canon_id) {
-    const new_url = request.originalUrl.replace("/empires/" + game_id,
-                                                "/empires/" + canon_id);
+    const new_url = request.originalUrl.replace(`/${engine}/${game_id}`,
+                                                `/${engine}/${canon_id}`);
     response.redirect(301, new_url);
     return;
   }