feat: add hostname management and improve error handling

pkg/http/handlers.go

@@ -76,3 +76,35 @@ func HandleNetworkRemove(w http.ResponseWriter, r *http.Request) {
 
 	w.WriteHeader(http.StatusOK)
 }
+
+func HandleGetHostname(w http.ResponseWriter, r *http.Request) {
+	hostname, err := network.GetHostname()
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	w.Write([]byte(hostname))
+}
+
+func HandleSetHostname(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var req struct {
+		Hostname string `json:"hostname"`
+	}
+
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	if err := network.SetHostname(req.Hostname); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusOK)
+}