Serve hashed static resources

example/src/Example.scala

@@ -1,5 +1,6 @@
 import zio.*
 import zio.http.*
+import zio.http.codec.PathCodec
 import zio.logging.ConsoleLoggerConfig
 import zio.logging.LogColor
 import zio.logging.LogFilter
@@ -47,7 +48,9 @@ object Example extends ZIOAppDefault:
       )
     )
 
-  val routes = liveRouter.routes @@ Middleware.serveResources(Path.empty / "static", "public")
+  val routes =
+    liveRouter.routes @@
+      ServeHashedResourcesMiddleware(Path.empty / "static", "public")
 
   override val run = Server.serve(routes).provide(Server.default)
 end Example

example/src/RootLayout.scala

@@ -1,6 +1,24 @@
 import scalive.*
 
 object RootLayout:
+  import java.nio.file.Paths
+
+  private val runtime = zio.Runtime.default
+
+  // TODO externalize config in common with ServeHashedResourcesMiddleware
+  private lazy val resourceRoot: java.nio.file.Path =
+    Option(getClass.getClassLoader.getResource("public"))
+      .map(url => Paths.get(url.toURI))
+      .getOrElse(throw new IllegalArgumentException("public resources directory not found"))
+
+  private def hashOrDie(rel: String): String =
+    zio.Unsafe.unsafe { implicit u =>
+      runtime.unsafe.run(StaticAssetHasher.hashedPath(rel, resourceRoot)).getOrThrowFiberFailure()
+    }
+
+  private val hashedJs  = s"/static/${hashOrDie("app.js")}"
+  private val hashedCss = s"/static/${hashOrDie("app.css")}"
+
   def apply(content: HtmlElement): HtmlElement =
     htmlRootTag(
       lang              := "en",
@@ -12,12 +30,13 @@ object RootLayout:
           defer           := true,
           phx.trackStatic := true,
           typ             := "text/javascript",
-          src             := "/static/app.js"
+          src             := hashedJs
         ),
-        linkTag(phx.trackStatic := true, rel := "stylesheet", href := "/static/app.css"),
+        linkTag(phx.trackStatic := true, rel := "stylesheet", href := hashedCss),
         titleTag("Scalive Example")
       ),
       bodyTag(
         content
       )
     )
+end RootLayout