package executor

import "strings"

func appendIfMissing(items []string, item string) []string {
	item = strings.TrimSpace(item)
	if item == "" {
		return items
	}
	for _, existing := range items {
		if strings.TrimSpace(existing) == item {
			return items
		}
	}
	return append(items, item)
}

func preview(text string, limit int) string {
	text = strings.TrimSpace(text)
	if text == "" || limit <= 0 {
		return ""
	}
	runes := []rune(text)
	if len(runes) <= limit {
		return string(runes)
	}
	return string(runes[:limit]) + "..."
}