package main // A simple program that opens the alternate screen buffer then counts down // from 5 and then exits. import ( "fmt" "log" "time" tea "github.com/charmbracelet/bubbletea" ) type model int type tickMsg time.Time func main() { p := tea.NewProgram(initialize, update, view) p.EnterAltScreen() err := p.Start() p.ExitAltScreen() if err != nil { log.Fatal(err) } } func initialize() (tea.Model, tea.Cmd) { return model(5), tick() } func update(message tea.Msg, mdl tea.Model) (tea.Model, tea.Cmd) { m, _ := mdl.(model) switch msg := message.(type) { case tea.KeyMsg: switch msg.String() { case "ctrl+c": fallthrough case "esc": fallthrough case "q": return m, tea.Quit } case tickMsg: m -= 1 if m <= 0 { return m, tea.Quit } return m, tick() } return m, nil } func view(mdl tea.Model) string { m, _ := mdl.(model) return fmt.Sprintf("\n\n Hi. This program will exit in %d seconds...", m) } func tick() tea.Cmd { return tea.Tick(time.Second, func(t time.Time) tea.Msg { return tickMsg(t) }) }