using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Globalization;
using System.Text;
using System.Threading.Tasks;

namespace Neo.LegitimateLicences.Desktop.Helpers
{
    public class JsonHelper
    {
        #region GetValidString
        public static string GetValidString(JValue obj)
        {
            return obj.ToString();

            //if (obj.Value != null)
            //{ 
            //    return obj.ToString();   
            //}
            //else
            //{ 
            //    return "-";
            //}
        } 
        #endregion

        #region GetValidLong
        public static long? GetValidLong(JValue obj)
        {            
            if (obj.Value != null)
            {
                return Convert.ToInt64(obj.ToString());
            }
            else
            {
                return null;
            }
        } 
        #endregion

        #region GetValidInt
        public static int? GetValidInt(JValue obj)
        {            
            if (obj.Value != null)
            {
                return Convert.ToInt32(obj.ToString());
            }
            else
            {
                return null;
            }
        } 
        #endregion

        #region GetValidShort
        public static short? GetValidShort(JValue obj)
        {            
            if (obj.Value != null)
            {
                return Convert.ToInt16(obj.ToString());
            }
            else
            {
                return null;
            }
        } 
        #endregion

        #region GetValidDate
        public static DateTime? GetValidDate(JValue obj)
        {            
            if (obj.Value != null)
            {
                return Convert.ToDateTime(obj.ToString());
            }
            else
            {
                return null;
            }
        } 
        #endregion

        #region GetValidDouble
        public static double GetValidDouble(JValue obj)
        {
            if (obj == null || obj.Value == null)
            {
                return 0d;
            }

            var s = obj.ToString().Trim();
            if (string.IsNullOrWhiteSpace(s)) return 0d;

            // Remove spaces
            s = s.Replace(" ", "");

            // Normalize decimal/thousand separators: handle "627,66" or "627,66" with thousands
            if (s.IndexOf(',') != -1 && s.IndexOf('.') == -1)
            {
                s = s.Replace(',', '.');
            }
            else
            {
                var commaCount = s.Count(c => c == ',');
                var dotCount = s.Count(c => c == '.');
                if (commaCount + dotCount > 1)
                {
                    var lastSep = Math.Max(s.LastIndexOf(','), s.LastIndexOf('.'));
                    var intPart = new string(s.Substring(0, lastSep).Where(ch => ch != ',' && ch != '.').ToArray());
                    var decPart = s.Substring(lastSep + 1);
                    s = intPart + "." + decPart;
                }
            }

            if (double.TryParse(s, NumberStyles.AllowDecimalPoint | NumberStyles.AllowLeadingSign, CultureInfo.InvariantCulture, out var d))
            {
                return d;
            }
            return 0d;
        }
        #endregion
    }
}