move route and module into internal

internal/module/module.go

@@ -0,0 +1,51 @@
+package module
+
+import (
+	"context"
+	"fmt"
+	"sync"
+
+	"github.com/jwetzell/showbridge-go/internal/config"
+	"github.com/jwetzell/showbridge-go/internal/route"
+)
+
+type ModuleError struct {
+	Index  int
+	Config config.ModuleConfig
+	Error  error
+}
+
+type Module interface {
+	Id() string
+	Type() string
+	Run() error
+	Output(any) error
+}
+
+type ModuleRegistration struct {
+	Type string `json:"type"`
+	New  func(context.Context, config.ModuleConfig, route.RouteIO) (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)
+)