//go:build darwin

package clipboard

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

type darwinClipboard struct{}

// New creates a macOS clipboard (pbpaste/pbcopy).
func New() (Clipboard, error) {
	return newDarwinClipboard()
}

func newDarwinClipboard() (*darwinClipboard, error) {
	// Verify pbpaste and pbcopy are available
	if err := checkBinary("pbpaste"); err != nil {
		return nil, fmt.Errorf("clip-sync: pbpaste not found: %w", err)
	}
	if err := checkBinary("pbcopy"); err != nil {
		return nil, fmt.Errorf("clip-sync: pbcopy not found: %w", err)
	}
	return &darwinClipboard{}, nil
}

func (c *darwinClipboard) Read() (string, error) {
	cmd := exec.Command("pbpaste")
	out, err := cmd.Output()
	if err != nil {
		return "", fmt.Errorf("clipboard read (pbpaste): %w", err)
	}
	return strings.TrimRight(string(out), "\n\r"), nil
}

func (c *darwinClipboard) Write(text string) error {
	cmd := exec.Command("pbcopy")
	cmd.Stdin = strings.NewReader(text)
	if err := cmd.Run(); err != nil {
		return fmt.Errorf("clipboard write (pbcopy): %w", err)
	}
	return nil
}