110 lines
1.8 KiB
Go
110 lines
1.8 KiB
Go
package spin
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import (
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"context"
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"errors"
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"fmt"
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"github.com/charmbracelet/bubbles/spinner"
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tea "github.com/charmbracelet/bubbletea"
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)
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type model struct {
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spinner spinner.Model
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text string
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quitting bool
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err error
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}
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type errMsg error
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type textMessage string
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func newModel(text string) *model {
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s := spinner.New()
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s.Spinner = spinner.Dot
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return &model{spinner: s, text: text}
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}
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func (m *model) Init() tea.Cmd {
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return m.spinner.Tick
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}
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func (m *model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
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switch msg := msg.(type) {
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case errMsg:
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m.err = msg
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return m, nil
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case textMessage:
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m.text = string(msg)
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return m, nil
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default:
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var cmd tea.Cmd
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m.spinner, cmd = m.spinner.Update(msg)
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return m, cmd
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}
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}
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func (m *model) View() string {
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if m.err != nil {
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return m.err.Error()
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}
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str := fmt.Sprintf("%s %s\n", m.spinner.View(), m.text)
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if m.quitting {
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return str + "\n"
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}
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return str
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}
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type Spinner interface {
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Wait() error
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SetMessage(string)
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Err() error
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}
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var _ Spinner = new(spin)
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type spin struct {
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p *tea.Program
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err error
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finished chan struct{}
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}
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func (s *spin) Wait() error {
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<-s.finished
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return s.Err()
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}
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func (s *spin) SetMessage(msg string) {
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s.p.Send(textMessage(msg))
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}
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func (s *spin) Err() error {
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switch {
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case errors.Is(s.err, context.Canceled):
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return nil
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case errors.Is(s.err, context.DeadlineExceeded):
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return nil
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case errors.Is(s.err, tea.ErrProgramKilled):
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return nil
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}
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return s.err
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}
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func Spin(ctx context.Context, message string) Spinner {
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p := tea.NewProgram(
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newModel(message),
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tea.WithContext(ctx),
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tea.WithoutSignalHandler(),
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tea.WithInput(nil),
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)
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s := &spin{p: p, finished: make(chan struct{}, 1)}
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go func() {
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_, err := s.p.Run()
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s.err = err
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s.finished <- struct{}{}
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}()
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return s
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}
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