using Newtonsoft.Json;
using System;
using System.Configuration;
using System.Security.Cryptography;
using System.Text;
using System.Web;

namespace Common.Utility
{
    public static class GetStatic
    {
        public static string ReadQueryString(string key, string defVal)
        {
            ////string str=HttpContext.Current.Request.QueryString[key] ?? defVal;
            ////str = str.Replace("#", "");
            ////return str;
            return HttpContext.Current.Request.QueryString[key] ?? defVal;
        }

        public static string ComputeSha256Hash(string rawData)
        {
            // Create a SHA256
            using (SHA256 sha256Hash = SHA256.Create())
            {
                // ComputeHash - returns byte array
                byte[] bytes = sha256Hash.ComputeHash(Encoding.UTF8.GetBytes(rawData));

                // Convert byte array to a string
                StringBuilder builder = new StringBuilder();
                for (int i = 0; i < bytes.Length; i++)
                {
                    builder.Append(bytes[i].ToString("x2"));
                }
                return builder.ToString();
            }
        }

        public static string ConvertToJson(object obj)
        {
            return JsonConvert.SerializeObject(obj);
        }

        public static T ConvertToObject<T>(string input) where T : class
        {
            return JsonConvert.DeserializeObject<T>(input);
        }

        public static string GetSessionId()
        {
            return HttpContext.Current.Session.SessionID;
        }

        public static double ParseDouble(string value)
        {
            double tmp;
            double.TryParse(value, out tmp);
            return tmp;
        }
        public static long ParseLong(string value)
        {
            long tmp;
            long.TryParse(value, out tmp);
            return tmp;
        }

        public static string ObjectToJson(object obj)
        {
            return JsonConvert.SerializeObject(obj);
        }
        public static string ReadWebConfig(string key, string defVal)
        {
            try
            {
                return ConfigurationManager.AppSettings[key].ToString() == null ? defVal : ConfigurationManager.AppSettings[key].ToString();
            }
            catch
            {
                return defVal;
            }
        }
        public static String ShowDecimal(String strVal)
        {
            if (strVal != "")
                return String.Format("{0:0,0.00}", double.Parse(strVal));
            else
                return strVal;
        }

        public static String ShowTwoDecimal(String strVal)
        {
            if (strVal != "")
                return double.Parse(strVal).ToString("0.00");
            else
                return strVal;
        }
        public static string Truncate(this string value, int maxLength)
        {
            var returnValue = "";
            if (string.IsNullOrEmpty(value)) return value;

            returnValue = value.Length <= maxLength ? value : value.Substring(0, maxLength);

            return returnValue;
        }
    }
}