refactor(gui): add a gui struct to handle all related to the gui

pkg/gui/gui.go

@@ -0,0 +1,32 @@
+package gui
+
+import "github.com/jroimartin/gocui"
+
+// Gui wraps the gocui Gui object which handles rendering and events
+type Gui struct {
+	g *gocui.Gui
+}
+
+// New builds a new gui handler
+func New(g *gocui.Gui) *Gui {
+	return &Gui{
+		g: g,
+	}
+}
+
+// Run setup the gui with keybindings and start the mainloop
+func (gui *Gui) Run() error {
+	defer gui.g.Close()
+
+	gui.g.SetManagerFunc(gui.layout)
+
+	if err := gui.g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, Quit); err != nil {
+		return err
+	}
+
+	if err := gui.g.MainLoop(); err != nil && err != gocui.ErrQuit {
+		return err
+	}
+
+	return nil
+}