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

namespace AnHuiMI.Common
{
	class StringUtils
	{
		public static long CurrentTimeStamp(bool isMinseconds = false)
		{
			TimeSpan timeSpan = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
			return Convert.ToInt64(isMinseconds ? timeSpan.TotalMilliseconds : timeSpan.TotalSeconds);
		}

		public static SortedDictionary<string, object> KeySort(JObject obj)
		{
			var dic = new SortedDictionary<string, object>();
			foreach (var x in obj)
			{
				if (x.Value is JValue) dic.Add(x.Key, x.Value);
				else if (x.Value is JObject) dic.Add(x.Key, KeySort((JObject)x.Value));
				else if (x.Value is JArray)
				{
					var tmp = new SortedDictionary<string, object>[x.Value.Count()];
					for (var i = 0; i < x.Value.Count(); i++)
					{
						tmp[i] = KeySort((JObject)x.Value[i]);
					}
					dic.Add(x.Key, tmp);
				}
			}
			return dic;

		}

		/// <summary>
		/// 删除为空值的属性
		/// </summary>
		/// <param name="joInput"></param>
		/// <returns></returns>
		public static JObject removeEmptyProperty(JObject joInput)
		{
			JObject joOutput = new JObject();
			foreach (var x in joInput)
			{
				if (x.Value is JValue)
				{
					if (!string.IsNullOrEmpty(x.Value.ToString()))
					{
						joOutput.Add(x.Key, x.Value);
					}
				}
				else if (x.Value is JObject) joOutput.Add(x.Key, removeEmptyProperty((JObject)x.Value));
				else if (x.Value is JArray)
				{
					JArray tmp = new JArray();
					for (var i = 0; i < x.Value.Count(); i++)
					{
						tmp.Add(removeEmptyProperty((JObject)x.Value[i]));
					}
					joOutput.Add(x.Key, tmp);
				}
			}
			return joOutput;
		}

		public static string SortJson(string json)
		{
			SortedDictionary<string, object> keyValues = KeySort(JObject.Parse(json));
			keyValues.OrderBy(m => m.Key);

			return JsonConvert.SerializeObject(keyValues);
		}

		public static string Json2sign(string json)
		{
			Dictionary<string, object> dictionary = JsonConvert.DeserializeObject<Dictionary<string, object>>(json);
			string text = "";
			foreach (KeyValuePair<string, object> keyValuePair in dictionary)
			{
                // 值为空不参与签名
                //if (!string.IsNullOrEmpty(keyValuePair.Value + ""))
                //{
                    text = string.Concat(new object[]
					{
					text,
					keyValuePair.Key,
					"=",
					keyValuePair.Value,
					"&"
					});
                //}
            }
			return text.Substring(0, text.Length - 1);
		}
	}
}