refactor: tui package for CLI styles and prompts, restyle confirmation

internal/cli/tui/prompt.go

@@ -0,0 +1,53 @@
+package tui
+
+import (
+	"os"
+
+	"charm.land/huh/v2"
+	"charm.land/lipgloss/v2"
+	"golang.org/x/term"
+)
+
+// Confirm shows a confirmation prompt with a yellow-styled title.
+// If title is empty, it defaults to "Do you want to continue?".
+func Confirm(title string) (bool, error) {
+	if title == "" {
+		title = "Do you want to continue?"
+	}
+
+	var confirmed bool
+	form := huh.NewForm(
+		huh.NewGroup(
+			huh.NewConfirm().
+				Title(title).
+				Affirmative("Yes!").
+				Negative("No").
+				Value(&confirmed),
+		),
+	).WithTheme(ThemeConfirm()).
+		WithAccessible(true)
+	if err := form.Run(); err != nil {
+		return false, err
+	}
+
+	return confirmed, nil
+}
+
+// ThemeConfirm returns a huh theme with a bold yellow title style for the confirmation prompt.
+func ThemeConfirm() huh.Theme {
+	return huh.ThemeFunc(func(isDark bool) *huh.Styles {
+		t := huh.ThemeBase(isDark)
+		t.Focused.Title = t.Focused.Title.Foreground(lipgloss.Yellow).Bold(true)
+		return t
+	})
+}
+
+// IsStdinTerminal checks if the standard input is a terminal (TTY).
+func IsStdinTerminal() bool {
+	return term.IsTerminal(int(os.Stdin.Fd()))
+}
+
+// IsStdoutTerminal checks if the standard output is a terminal (TTY).
+func IsStdoutTerminal() bool {
+	return term.IsTerminal(int(os.Stdout.Fd()))
+}