using System;
using System.Text.RegularExpressions;
using Kreta.Core;

namespace Kreta.BusinessLogic.Extensions
{
    public static class NameExtensions
    {
        public static string CleanElotag(this string elotag)
        {
            var trimmed = elotag.ReplaceMultipleSpacesAndTrim();

            if (string.IsNullOrWhiteSpace(trimmed))
            {
                return trimmed;
            }

            return GetStringWithoutDuplicatedDots(trimmed);
        }

        public static string GetNevSorrendben(string nevSorrend, string nevElotag, string vezetekNev, string keresztNev)
            => $"{nevElotag} {(string.Equals(nevSorrend, "F", StringComparison.OrdinalIgnoreCase) ? $"{vezetekNev} {keresztNev}" : $"{keresztNev} {vezetekNev}")}".ReplaceMultipleSpacesAndTrim();

        private static string GetStringWithoutDuplicatedDots(string text)
            => NullableRegexReplace(text, @"\.+", ".");

        private static string NullableRegexReplace(this string text, string pattern, string replacement)
            => string.IsNullOrWhiteSpace(text) ? text : Regex.Replace(text, pattern, replacement);
    }
}