feat: handle ctrl+c

When ctrl+c is pressed, exit with error (as if it was an interrupt).

The SIGINT signal is never actually caught because the terminal is in
raw mode, so it just sends the keys to the Update method.

closes #45
closes #40

Signed-off-by: Carlos A Becker <caarlos0@users.noreply.github.com>

main.go

@@ -17,12 +17,13 @@ import (
 )
 
 type model struct {
-	name     string
-	duration time.Duration
-	start    time.Time
-	timer    timer.Model
-	progress progress.Model
-	quitting bool
+	name         string
+	duration     time.Duration
+	start        time.Time
+	timer        timer.Model
+	progress     progress.Model
+	quitting     bool
+	interrupting bool
 }
 
 func (m model) Init() tea.Cmd {
@@ -36,11 +37,7 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		var cmd tea.Cmd
 
 		step := 100.0 / (m.duration).Seconds()
-
 		cmds = append(cmds, m.progress.IncrPercent(step/100.0))
-		// pm, cmd := m.progress.Update(msg)
-		// cmds = append(cmds, cmd)
-		// m.progress = pm.(progress.Model)
 
 		m.timer, cmd = m.timer.Update(msg)
 		cmds = append(cmds, cmd)
@@ -72,13 +69,17 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			m.quitting = true
 			return m, tea.Quit
 		}
+		if key.Matches(msg, intKeys) {
+			m.interrupting = true
+			return m, tea.Quit
+		}
 	}
 
 	return m, nil
 }
 
 func (m model) View() string {
-	if m.quitting {
+	if m.quitting || m.interrupting {
 		return "\n"
 	}
 
@@ -91,12 +92,10 @@ func (m model) View() string {
 }
 
 var (
-	name     string
-	version  = "dev"
-	quitKeys = key.NewBinding(
-		key.WithKeys("q", "ctrl+c"),
-		key.WithHelp("q", "quit"),
-	)
+	name        string
+	version     = "dev"
+	quitKeys    = key.NewBinding(key.WithKeys("esc", "q"))
+	intKeys     = key.NewBinding(key.WithKeys("ctrl+c"))
 	boldStyle   = lipgloss.NewStyle().Bold(true)
 	italicStyle = lipgloss.NewStyle().Italic(true)
 )
@@ -118,14 +117,20 @@ var rootCmd = &coral.Command{
 		if err != nil {
 			return err
 		}
-		m := model{
+		m, err := tea.NewProgram(model{
 			duration: duration,
 			timer:    timer.NewWithInterval(duration, time.Second),
 			progress: progress.New(progress.WithDefaultGradient()),
 			name:     name,
 			start:    time.Now(),
+		}).Run()
+		if err != nil {
+			return err
+		}
+		if m.(model).interrupting {
+			return fmt.Errorf("interrupted")
 		}
-		return tea.NewProgram(m).Start()
+		return nil
 	},
 }