TUI view management and input handling cleanup

pkg/tui/shared/shared.go

@@ -4,13 +4,31 @@ import (
 	tea "github.com/charmbracelet/bubbletea"
 )
 
-type Shared struct {
+// An analogue to tea.Model with support for checking if the model has been
+// initialized before
+type ViewModel interface {
+	Init() tea.Cmd
+	Update(tea.Msg) (ViewModel, tea.Cmd)
+	View() string
+	Initialized() bool // Return whether this view is initialized
+}
+
+type ViewState struct {
 	Initialized bool
 	Width  int
 	Height int
 	Err    error
 }
 
+type View int
+
+const (
+	ViewChat View = iota
+	ViewConversations
+	//StateSettings
+	//StateHelp
+)
+
 // a convenience struct for holding rendered content for indiviudal UI
 // elements
 type Sections struct {
@@ -28,6 +46,8 @@ type (
 	MsgViewEnter struct{}
 	// sent when an error occurs
 	MsgError error
+	// sent when the view has handled a key input
+	MsgKeyHandled tea.KeyMsg
 )
 
 func ViewEnter() tea.Cmd {
@@ -36,17 +56,14 @@ func ViewEnter() tea.Cmd {
 	}
 }
 
+func KeyHandled(key tea.KeyMsg) tea.Cmd {
+	return func() tea.Msg {
+		return MsgKeyHandled(key)
+	}
+}
+
 func WrapError(err error) tea.Cmd {
 	return func() tea.Msg {
 		return MsgError(err)
 	}
 }
-
-type View int
-
-const (
-	StateChat View = iota
-	StateConversations
-	//StateSettings
-	//StateHelp
-)