chore: reorganize go code

internal/hp_ipn/jsmap.go

@@ -0,0 +1,55 @@
+//go:build js && wasm
+
+package hp_ipn
+
+import (
+	"errors"
+	"syscall/js"
+)
+
+// Represents the options needed to initialize the TsWasmNet module.
+type TsWasmNetOptions struct {
+	// Tailscale control URL, e.g., "https://controlplane.tailscale.com"
+	ControlURL string
+
+	// Pre-authentication key for the Tailnet
+	PreAuthKey string
+
+	// Optional hostname, autogenerated if not provided.
+	Hostname string
+}
+
+// Parses the provided JS object to validate and extract the TsWasmNetOptions.
+func ParseTsWasmNetOptions(obj js.Value) (*TsWasmNetOptions, error) {
+	if obj.IsUndefined() || obj.IsNull() {
+		return nil, errors.New("TsWasmNetOptions cannot be undefined or null")
+	}
+
+	cUrl := safeString("ControlURL", obj)
+	preAuthKey := safeString("PreAuthKey", obj)
+	hostname := safeString("Hostname", obj)
+
+	if cUrl == "" || preAuthKey == "" || hostname == "" {
+		return nil, errors.New("missing required fields in TsWasmNetOptions")
+	}
+
+	return &TsWasmNetOptions{
+		ControlURL: cUrl,
+		PreAuthKey: preAuthKey,
+		Hostname:   hostname,
+	}, nil
+}
+
+// Retrieves a string value from a JS object safely.
+func safeString(key string, obj js.Value) string {
+	if obj.IsUndefined() || obj.IsNull() {
+		return ""
+	}
+
+	val := obj.Get(key)
+	if val.IsUndefined() || val.IsNull() {
+		return ""
+	}
+
+	return val.String()
+}