Made go runtime package public.

Using loglevel store to keep loglevel in sync

v2/pkg/runtime/system.go

@@ -0,0 +1,50 @@
+package runtime
+
+import (
+	"fmt"
+
+	"github.com/wailsapp/wails/v2/internal/crypto"
+	"github.com/wailsapp/wails/v2/internal/servicebus"
+)
+
+// System defines all System related operations
+type System interface {
+	IsDarkMode() bool
+}
+
+// system exposes the System interface
+type system struct {
+	bus *servicebus.ServiceBus
+}
+
+// newSystem creates a new System struct
+func newSystem(bus *servicebus.ServiceBus) System {
+	return &system{
+		bus: bus,
+	}
+}
+
+// On pass through
+func (r *system) IsDarkMode() bool {
+
+	// Create unique system callback
+	uniqueCallback := crypto.RandomID()
+
+	// Subscribe to the respose channel
+	responseTopic := "systemresponse:" + uniqueCallback
+	systemResponseChannel, err := r.bus.Subscribe(responseTopic)
+	if err != nil {
+		fmt.Printf("ERROR: Cannot subscribe to bus topic: %+v\n", err.Error())
+	}
+
+	message := "system:isdarkmode:" + uniqueCallback
+	r.bus.Publish(message, nil)
+
+	// Wait for result
+	var result *servicebus.Message = <-systemResponseChannel
+
+	// Delete subscription to response topic
+	r.bus.UnSubscribe(responseTopic)
+
+	return result.Data().(bool)
+}