From 2a635d0aaaba7537dfc31f09d5d4d4509ceb71f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Untersch=C3=BCtz?= <sebastian@unterschutz.de>
Date: Tue, 6 Jan 2026 18:46:48 +0100
Subject: [PATCH] Add Cache-Control headers for static assets and versioned
 WASM/JS files in Gin server

---
 cmd/server/gin_server.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/cmd/server/gin_server.go b/cmd/server/gin_server.go
index a1eb54b..be63e31 100644
--- a/cmd/server/gin_server.go
+++ b/cmd/server/gin_server.go
@@ -29,6 +29,20 @@ func SetupGinServer(ec *nats.EncodedConn, port string) *gin.Engine {
 	// Recovery Middleware
 	r.Use(gin.Recovery())
 
+	// Cache Control Middleware für statische Assets
+	r.Use(func(c *gin.Context) {
+		path := c.Request.URL.Path
+		// Assets (Bilder, Fonts, etc.) - 1 Jahr cachen
+		if len(path) > 7 && path[:8] == "/assets/" {
+			c.Header("Cache-Control", "public, max-age=31536000, immutable")
+		}
+		// WASM und JS Dateien - nur cachen wenn mit ?v= Parameter
+		if (path == "/main.wasm" || path == "/game.js" || path == "/wasm_exec.js") && c.Query("v") != "" {
+			c.Header("Cache-Control", "public, max-age=31536000, immutable")
+		}
+		c.Next()
+	})
+
 	// Health Check Endpoint
 	r.GET("/health", func(c *gin.Context) {
 		c.JSON(200, gin.H{