Refactor loadOrCreatePlayerCode to support platform-specific implementations for Desktop and WebAssembly environments.

cmd/client/storage_wasm.go

@@ -0,0 +1,45 @@
+//go:build js && wasm
+// +build js,wasm
+
+package main
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"log"
+	"syscall/js"
+)
+
+// loadOrCreatePlayerCode lädt oder erstellt einen eindeutigen Spieler-Code (WebAssembly Version)
+func (g *Game) loadOrCreatePlayerCode() {
+	const storageKey = "escape_from_teacher_player_code"
+
+	// Versuche aus LocalStorage zu laden
+	if jsGlobal := js.Global(); !jsGlobal.IsUndefined() {
+		localStorage := jsGlobal.Get("localStorage")
+		if !localStorage.IsUndefined() {
+			stored := localStorage.Call("getItem", storageKey)
+			if !stored.IsNull() && stored.String() != "" {
+				g.playerCode = stored.String()
+				log.Printf("🔑 Player-Code aus LocalStorage geladen: %s", g.playerCode)
+				return
+			}
+		}
+	}
+
+	// Erstelle neuen Code
+	bytes := make([]byte, 16)
+	if _, err := rand.Read(bytes); err != nil {
+		log.Fatal("Fehler beim Generieren des Player-Codes:", err)
+	}
+	g.playerCode = hex.EncodeToString(bytes)
+
+	// In LocalStorage speichern
+	if jsGlobal := js.Global(); !jsGlobal.IsUndefined() {
+		localStorage := jsGlobal.Get("localStorage")
+		if !localStorage.IsUndefined() {
+			localStorage.Call("setItem", storageKey, g.playerCode)
+			log.Printf("🆕 Neuer Player-Code in LocalStorage erstellt: %s", g.playerCode)
+		}
+	}
+}