Use Selmer templates to inject proxy path prefix

src/main/lrsql/admin/interceptors/ui.clj

@@ -1,15 +1,19 @@
 (ns lrsql.admin.interceptors.ui
   (:require [ring.util.response :as resp]
+            [selmer.parser :as selm-parser]
             [io.pedestal.interceptor :refer [interceptor]]
             [com.yetanalytics.lrs.pedestal.interceptor :as i]
             [lrsql.admin.interceptors.oidc :as oidc-i]
             [lrsql.init.localization :refer [custom-language-map]]))
 
 (defn get-spa
   "Handler function that returns the index.html file."
-  [_]
-  (-> (resp/resource-response "public/admin/index.html")
-      (assoc-in [:headers "Content-Type"] "text/html")))
+  [path-prefix]
+  (fn [_]
+    (-> (selm-parser/render-file "public/admin/index.html"
+                                 {:prefix path-prefix})
+        resp/response
+        (resp/content-type "text/html"))))
 
 (defn admin-ui-redirect
   "Handler function to redirect to the admin UI."

src/main/lrsql/admin/routes.clj

@@ -219,11 +219,11 @@
                              (ui/get-env inject-config))
      :route-name :lrsql.admin.ui/get-env]
     ;; SPA routes
-    ["/admin/ui" :get ui/get-spa
+    ["/admin/ui" :get (ui/get-spa proxy-path)
      :route-name :lrsql.admin.ui/main-path]
-    ["/admin/ui/" :get ui/get-spa
+    ["/admin/ui/" :get (ui/get-spa proxy-path)
      :route-name :lrsql.admin.ui/slash-path]
-    ["/admin/ui/*path" :get ui/get-spa
+    ["/admin/ui/*path" :get (ui/get-spa proxy-path)
      :route-name :lrsql.admin.ui/sub-paths]
     ;; SPA redirects
     ["/" :get (ui/admin-ui-redirect proxy-path)