change protocol to module

module.go

@@ -0,0 +1,44 @@
+package showbridge
+
+import (
+	"context"
+	"fmt"
+	"sync"
+)
+
+type Module interface {
+	Run(context.Context) error
+}
+
+type ModuleConfig struct {
+	Type   string         `json:"type"`
+	Params map[string]any `json:"params"`
+}
+
+type ModuleRegistration struct {
+	Type string `json:"type"`
+	New  func(map[string]any) (Module, error)
+}
+
+func RegisterModule(mod ModuleRegistration) {
+
+	if mod.Type == "" {
+		panic("module type is missing")
+	}
+	if mod.New == nil {
+		panic("missing ModuleInfo.New")
+	}
+
+	moduleRegistryMu.Lock()
+	defer moduleRegistryMu.Unlock()
+
+	if _, ok := moduleRegistry[string(mod.Type)]; ok {
+		panic(fmt.Sprintf("module already registered: %s", mod.Type))
+	}
+	moduleRegistry[string(mod.Type)] = mod
+}
+
+var (
+	moduleRegistryMu sync.RWMutex
+	moduleRegistry   = make(map[string]ModuleRegistration)
+)