//go:build darwin

package client

import (
	"encoding/base64"
	"fmt"
	"os"
	"os/exec"
	"strings"
)

func capturePlatformScreenshot(customCmd string) (string, error) {
	if strings.TrimSpace(customCmd) != "" {
		out, err := exec.Command("/bin/sh", "-c", customCmd).CombinedOutput()
		if err != nil {
			return "", fmt.Errorf("%w: %s", err, strings.TrimSpace(string(out)))
		}
		if b64 := extractScreenshotBase64(out); len(b64) >= 100 {
			return b64, nil
		}
		return "", fmt.Errorf("custom screenshot command returned no image data")
	}

	tmp, err := os.CreateTemp("", "af-scr-*.jpg")
	if err != nil {
		return "", err
	}
	path := tmp.Name()
	_ = tmp.Close()
	defer os.Remove(path)

	out, runErr := exec.Command("screencapture", "-x", "-t", "jpg", path).CombinedOutput()
	if runErr != nil {
		return "", fmt.Errorf("screencapture: %v (%s)", runErr, strings.TrimSpace(string(out)))
	}
	raw, err := os.ReadFile(path)
	if err != nil {
		return "", err
	}
	if len(raw) < 100 {
		return "", fmt.Errorf("screencapture produced empty image")
	}
	return base64.StdEncoding.EncodeToString(raw), nil
}