package output

import (
	"fmt"
	"os/exec"
	"strings"
)

// CopyToClipboard tries platform-appropriate clipboard tools and writes data
// to the first one available: wl-copy (Wayland), xclip (X11), pbcopy (macOS).
// Returns the tool name used or an error if none are available.
func CopyToClipboard(data string) (string, error) {
	candidates := [][]string{
		{"wl-copy"},
		{"xclip", "-selection", "clipboard"},
		{"pbcopy"},
	}
	for _, c := range candidates {
		if _, err := exec.LookPath(c[0]); err != nil {
			continue
		}
		cmd := exec.Command(c[0], c[1:]...)
		cmd.Stdin = strings.NewReader(data)
		if err := cmd.Run(); err != nil {
			return "", fmt.Errorf("%s: %w", c[0], err)
		}
		return c[0], nil
	}
	return "", fmt.Errorf("no clipboard tool found (tried wl-copy, xclip, pbcopy)")
}