ui/home is now in the same app

Signed-off-by: Hadi <112569860+anotherhadi@users.noreply.github.com>

cmd/spilltea/main.go

@@ -127,33 +127,26 @@ func main() {
 
 	projectDir := config.ExpandPath(config.Global.App.ProjectDir)
 
-	// Resolve project: either from --project flag or by running the home UI.
-	var project *homeUI.Project
+	// If --project flag is set, skip the home screen entirely.
 	if *flagProject != "" {
-		p, err := homeUI.OpenProject(projectDir, *flagProject)
+		project, err := homeUI.OpenProject(projectDir, *flagProject)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "project: %v\n", err)
 			os.Exit(1)
 		}
-		project = p
-	} else {
-		finalModel, err := tea.NewProgram(homeUI.New(projectDir)).Run()
-		if err != nil {
-			fmt.Fprintf(os.Stderr, "tui: %v\n", err)
-			os.Exit(1)
-		}
-		project = finalModel.(homeUI.Model).Selected()
-	}
-
-	// User quit the home screen without selecting a project.
-	if project == nil {
-		return
-	}
-
 		broker := intercept.NewBroker()
 		m := appUI.New(broker, project.Name, project.Path)
 		if _, err := tea.NewProgram(m).Run(); err != nil {
 			fmt.Fprintf(os.Stderr, "tui: %v\n", err)
 			os.Exit(1)
 		}
+		return
+	}
+
+	// Run home + app in a single program to avoid a blank flash on transition.
+	root := rootModel{home: homeUI.New(projectDir)}
+	if _, err := tea.NewProgram(root).Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "tui: %v\n", err)
+		os.Exit(1)
+	}
 }

cmd/spilltea/root.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	tea "charm.land/bubbletea/v2"
+	"github.com/anotherhadi/spilltea/internal/intercept"
+	appUI "github.com/anotherhadi/spilltea/internal/ui/app"
+	homeUI "github.com/anotherhadi/spilltea/internal/ui/home"
+)
+
+type rootState int
+
+const (
+	rootStateHome rootState = iota
+	rootStateApp
+)
+
+type rootModel struct {
+	state  rootState
+	home   homeUI.Model
+	app    tea.Model
+	width  int
+	height int
+}
+
+func (m rootModel) Init() tea.Cmd {
+	return m.home.Init()
+}
+
+func (m rootModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	if ws, ok := msg.(tea.WindowSizeMsg); ok {
+		m.width = ws.Width
+		m.height = ws.Height
+	}
+
+	if m.state == rootStateHome {
+		if sel, ok := msg.(homeUI.ProjectSelectedMsg); ok {
+			broker := intercept.NewBroker()
+			app := appUI.New(broker, sel.Project.Name, sel.Project.Path)
+			m.app = app
+			m.state = rootStateApp
+			return m, tea.Batch(app.Init(), func() tea.Msg {
+				return tea.WindowSizeMsg{Width: m.width, Height: m.height}
+			})
+		}
+		updated, cmd := m.home.Update(msg)
+		m.home = updated.(homeUI.Model)
+		return m, cmd
+	}
+
+	updated, cmd := m.app.Update(msg)
+	m.app = updated
+	return m, cmd
+}
+
+func (m rootModel) View() tea.View {
+	if m.state == rootStateApp {
+		return m.app.(interface{ View() tea.View }).View()
+	}
+	return m.home.View()
+}

internal/ui/home/model.go

@@ -142,6 +142,11 @@ type Project struct {
 	ModTime time.Time
 }
 
+// ProjectSelectedMsg is emitted when the user picks a project from the home screen.
+type ProjectSelectedMsg struct {
+	Project *Project
+}
+
 type inputMode int
 
 const (
@@ -161,15 +166,11 @@ type Model struct {
 	list        list.Model
 	projectDir  string
 	nameInput   textinput.Model
-	selected    *Project
 	width       int
 	height      int
 	teapotFrame int
 }
 
-// Selected returns the project chosen by the user, or nil if the program was
-// quit without making a selection.
-func (m Model) Selected() *Project { return m.selected }
 
 func New(projectDir string) Model {
 	projects := loadProjects(projectDir)

internal/ui/home/update.go

@@ -76,11 +76,11 @@ func (m Model) handleSelection() (tea.Model, tea.Cmd) {
 			return m, nil
 		}
 		initProjectFiles(dir)
-		m.selected = &Project{Name: "temporary", Path: filepath.Join(dir, "data.db")}
-		return m, tea.Quit
+		p := &Project{Name: "temporary", Path: filepath.Join(dir, "data.db")}
+		return m, func() tea.Msg { return ProjectSelectedMsg{Project: p} }
 	default:
-		m.selected = &Project{Name: item.name, Path: item.path}
-		return m, tea.Quit
+		p := &Project{Name: item.name, Path: item.path}
+		return m, func() tea.Msg { return ProjectSelectedMsg{Project: p} }
 	}
 }
 
@@ -117,8 +117,8 @@ func (m Model) updateNaming(msg tea.KeyPressMsg) (tea.Model, tea.Cmd) {
 			return m, nil
 		}
 		initProjectFiles(dir)
-		m.selected = &Project{Name: name, Path: filepath.Join(dir, "data.db")}
-		return m, tea.Quit
+		p := &Project{Name: name, Path: filepath.Join(dir, "data.db")}
+		return m, func() tea.Msg { return ProjectSelectedMsg{Project: p} }
 	default:
 		var cmd tea.Cmd
 		m.nameInput, cmd = m.nameInput.Update(msg)