package cmd

import (
	"os"

	"github.com/charmbracelet/x/term"
)

// isStdinTerminal is a package-level variable so tests can override it.
// Production code uses term.IsTerminal(os.Stdin.Fd()).
var isStdinTerminal = func() bool {
	return term.IsTerminal(os.Stdin.Fd())
}

// isInteractive reports whether keld should launch its TUI.
// It returns false when stdin is not a terminal or when
// KELD_NONINTERACTIVE is set to a non-empty value.
func isInteractive() bool {
	if os.Getenv("KELD_NONINTERACTIVE") != "" {
		return false
	}
	return isStdinTerminal()
}