make sure taks are in order and interfaces random

cmd/pm/runner.go

@@ -137,16 +137,14 @@ func runStartCmd(cmd *cobra.Command, args []string) error {
 }
 
 func taskLoop(ctx context.Context, application *task.App, surveyTasks map[string]task.Tasker, interfaces map[string]task.Interface) error {
-	var iNames []string
-	for name := range interfaces {
-		iNames = append(iNames, name)
-	}
+	iNames := task.ListInterfaces()
 
 	if len(iNames) == 0 {
 		return fmt.Errorf("no interfaces are available")
 	}
 
-	if len(surveyTasks) == 0 {
+	taskNames := task.ListTasks()
+	if len(taskNames) == 0 {
 		return fmt.Errorf("no tasks are available")
 	}
 
@@ -155,7 +153,11 @@ func taskLoop(ctx context.Context, application *task.App, surveyTasks map[string
 	})
 
 	idx := 0
-	for _, t := range surveyTasks {
+	for _, taskName := range taskNames {
+		t, ok := surveyTasks[taskName]
+		if !ok {
+			continue
+		}
 		iIdx := idx % len(iNames)
 		selected := interfaces[iNames[iIdx]]
 

pkg/task/register.go

@@ -5,12 +5,14 @@ import (
 )
 
 var interfaceRegistry = make(map[string]Interface)
+var interfaceOrder []string
 
 func RegisterInterface(name string, iface Interface) {
 	if _, exists := interfaceRegistry[name]; exists {
 		panic(fmt.Sprintf("interface %q already registered", name))
 	}
 	interfaceRegistry[name] = iface
+	interfaceOrder = append(interfaceOrder, name)
 }
 
 func GetInterface(name string) (Interface, error) {
@@ -22,20 +24,20 @@ func GetInterface(name string) (Interface, error) {
 }
 
 func ListInterfaces() []string {
-	names := make([]string, 0, len(interfaceRegistry))
-	for name := range interfaceRegistry {
-		names = append(names, name)
-	}
+	names := make([]string, len(interfaceOrder))
+	copy(names, interfaceOrder)
 	return names
 }
 
 var taskRegistry = make(map[string]func(*App) Tasker)
+var taskOrder []string
 
 func RegisterTask(name string, constructor func(*App) Tasker) {
 	if _, exists := taskRegistry[name]; exists {
 		panic(fmt.Sprintf("task %q already registered", name))
 	}
 	taskRegistry[name] = constructor
+	taskOrder = append(taskOrder, name)
 }
 
 func GetTask(name string, app *App) (Tasker, error) {
@@ -47,9 +49,7 @@ func GetTask(name string, app *App) (Tasker, error) {
 }
 
 func ListTasks() []string {
-	names := make([]string, 0, len(taskRegistry))
-	for name := range taskRegistry {
-		names = append(names, name)
-	}
+	names := make([]string, len(taskOrder))
+	copy(names, taskOrder)
 	return names
 }