//go:build darwin

package filedialog

import (
	"os/exec"
	"strings"
)

func appleScriptQuote(s string) string {
	s = strings.ReplaceAll(s, `\`, `\\`)
	return strings.ReplaceAll(s, `"`, `\"`)
}

// SaveJSON shows a Save As dialog for a .json file.
func SaveJSON(title, defaultName string) (string, error) {
	if title == "" {
		title = "Сохранить список серверов"
	}
	if defaultName == "" {
		defaultName = "navis-servers.json"
	}
	script := `try
	set thePath to POSIX path of (choose file name with prompt "` + appleScriptQuote(title) + `" default name "` + appleScriptQuote(defaultName) + `")
	return thePath
on error number -128
	error "canceled"
end try`
	out, err := exec.Command("osascript", "-e", script).Output()
	if err != nil {
		if strings.Contains(string(out), "canceled") || strings.Contains(err.Error(), "canceled") {
			return "", ErrCanceled
		}
		// osascript writes AppleScript errors to stderr; treat cancel-ish exits as cancel.
		if exit, ok := err.(*exec.ExitError); ok && exit.ExitCode() != 0 {
			msg := strings.ToLower(string(exit.Stderr) + string(out) + err.Error())
			if strings.Contains(msg, "cancel") || strings.Contains(msg, "-128") {
				return "", ErrCanceled
			}
		}
		return "", err
	}
	path := strings.TrimSpace(string(out))
	if path == "" {
		return "", ErrCanceled
	}
	if !strings.HasSuffix(strings.ToLower(path), ".json") {
		path += ".json"
	}
	return path, nil
}

// OpenJSON shows an Open dialog for a .json file.
func OpenJSON(title string) (string, error) {
	if title == "" {
		title = "Загрузить список серверов"
	}
	script := `try
	set theFile to choose file with prompt "` + appleScriptQuote(title) + `" of type {"public.json", "json", "public.plain-text"}
	return POSIX path of theFile
on error number -128
	error "canceled"
end try`
	out, err := exec.Command("osascript", "-e", script).Output()
	if err != nil {
		if exit, ok := err.(*exec.ExitError); ok {
			msg := strings.ToLower(string(exit.Stderr) + string(out) + err.Error())
			if strings.Contains(msg, "cancel") || strings.Contains(msg, "-128") {
				return "", ErrCanceled
			}
		}
		return "", err
	}
	path := strings.TrimSpace(string(out))
	if path == "" {
		return "", ErrCanceled
	}
	return path, nil
}