using Newtonsoft.Json;
using Newtonsoft.Json.Converters;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace WCS_Client
{
    /// <summary>
    /// 扩展.json序列反序列化
    /// </summary>
    public static partial class Extensions
    {
        /// <summary>
        /// 转成json对象
        /// </summary>
        /// <param name="Json">json字串</param>
        /// <returns></returns>
        public static object ToJson(this string Json)
        {
            return Json == null ? null : JsonConvert.DeserializeObject(Json);
        }
        /// <summary>
        /// 转成json字串
        /// </summary>
        /// <param name="obj">对象</param>
        /// <returns></returns>
        public static string ToJson(this object obj)
        {
            var timeConverter = new IsoDateTimeConverter { DateTimeFormat = "yyyy-MM-dd HH:mm:ss" };
            return JsonConvert.SerializeObject(obj, timeConverter);
        }
        /// <summary>
        /// 转成json字串
        /// </summary>
        /// <param name="obj">对象</param>
        /// <param name="datetimeformats">时间格式化</param>
        /// <returns></returns>
        public static string ToJson(this object obj, string datetimeformats)
        {
            var timeConverter = new IsoDateTimeConverter { DateTimeFormat = datetimeformats };
            return JsonConvert.SerializeObject(obj, timeConverter);
        }
        /// <summary>
        /// 字串反序列化成指定对象实体
        /// </summary>
        /// <typeparam name="T">实体类型</typeparam>
        /// <param name="Json">字串</param>
        /// <returns></returns>
        public static T ToObject<T>(this string Json)
        {
            return Json == null ? default(T) : JsonConvert.DeserializeObject<T>(Json);
        }
        /// <summary>
        /// 字串反序列化成指定对象实体(列表)
        /// </summary>
        /// <typeparam name="T">实体类型</typeparam>
        /// <param name="Json">字串</param>
        /// <returns></returns>
        public static List<T> ToList<T>(this string Json)
        {
            return Json == null ? null : JsonConvert.DeserializeObject<List<T>>(Json);
        }
        /// <summary>
        /// 字串反序列化成DataTable
        /// </summary>
        /// <param name="Json">字串</param>
        /// <returns></returns>
        public static DataTable ToTable(this string Json)
        {
            return Json == null ? null : JsonConvert.DeserializeObject<DataTable>(Json);
        }
        /// <summary>
        /// 字串反序列化成linq对象
        /// </summary>
        /// <param name="Json">字串</param>
        /// <returns></returns>
        public static JObject ToJObject(this string Json)
        {
            return Json == null ? JObject.Parse("{}") : JObject.Parse(Json.Replace("&nbsp;", ""));
        }
        public static DataTable GetAttributesDataTable(this object obj)
        {
            var tb = new DataTable(obj.GetType().Name);
            tb.Columns.Add("信号说明", typeof(string));
            tb.Columns.Add("信号名称", typeof(string));
            tb.Columns.Add("信号值", typeof(string));
            Type t = obj.GetType();
            //属性遍历
            foreach (System.Reflection.PropertyInfo pi in t.GetProperties())
            {
                AttributeCollection attributes = TypeDescriptor.GetProperties(t)[pi.Name].Attributes;
                DescriptionAttribute myAttribute = (DescriptionAttribute)attributes[typeof(DescriptionAttribute)];
                string describle = myAttribute.Description;
                string proname = pi.Name;
                var abc = pi.GetValue(obj, null);

                var values = new object[3];
                values[0] = describle;
                values[1] = proname;
                values[2] = abc;
                tb.Rows.Add(values);
            }
            return tb;
        }

        /// <summary>
        /// 扩展方法，获得枚举的Description
        /// </summary>
        /// <param name="value">枚举值</param>
        /// <param name="nameInstead">当枚举值没有定义DescriptionAttribute，是否使用枚举名代替，默认是使用</param>
        /// <returns>枚举的Description</returns>
        public static string GetDescription(this Enum value, Boolean nameInstead = true)
        {
            Type type = value.GetType();
            string name = Enum.GetName(type, value);
            if (name == null)
            {
                return null;
            }

            FieldInfo field = type.GetField(name);
            DescriptionAttribute attribute = System.Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute)) as DescriptionAttribute;

            if (attribute == null && nameInstead == true)
            {
                return name;
            }
            return attribute?.Description;
        }
    }
}