refactor to use app package instead of service

refactor app to be composable

internal/app/initializer.go

@@ -0,0 +1,41 @@
+package app
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/charmbracelet/huh"
+)
+
+type Initializer interface {
+	Init(path string) error
+}
+
+type InteractiveInitializer struct{}
+
+func (i InteractiveInitializer) Init(path string) error {
+	_, err := os.Stat(path)
+	if !os.IsNotExist(err) {
+		return nil
+	}
+
+	var initialize bool
+
+	err = huh.NewForm(
+		huh.NewGroup(
+			huh.NewConfirm().
+				Title("PM is not initialized in this directory!").
+				Description("Do you want to initialize it here?").
+				Value(&initialize),
+		)).WithTheme(huh.ThemeBase16()).WithAccessible(true).Run()
+
+	if err != nil {
+		return err
+	}
+
+	if !initialize {
+		return fmt.Errorf("project not initialized")
+	}
+
+	return nil
+}