using NewLife.Serialization;
using Newtonsoft.Json;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Dynamic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Text.Json;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Xml;

namespace YY.Admin.Core.Extension
{
    public static partial class ObjectExtension
    {
        /// <summary>
        /// 类型属性列表映射表
        /// </summary>
        private static readonly ConcurrentDictionary<Type, PropertyInfo[]> PropertyCache = new();

        /// <summary>
        /// 判断类型是否实现某个泛型
        /// </summary>
        /// <param name="type">类型</param>
        /// <param name="generic">泛型类型</param>
        /// <returns>bool</returns>
        public static bool HasImplementedRawGeneric(this Type type, Type generic)
        {
            // 检查接口类型
            var isTheRawGenericType = type.GetInterfaces().Any(IsTheRawGenericType);
            if (isTheRawGenericType) return true;

            // 检查类型
            while (type != null && type != typeof(object))
            {
                isTheRawGenericType = IsTheRawGenericType(type);
                if (isTheRawGenericType) return true;
                type = type.BaseType;
            }

            return false;

            // 判断逻辑
            bool IsTheRawGenericType(Type type) => generic == (type.IsGenericType ? type.GetGenericTypeDefinition() : type);
        }
        /// <summary>
        /// 判断类型是否为Nullable类型
        /// </summary>
        /// <param name="type"> 要处理的类型 </param>
        /// <returns> 是返回True，不是返回False </returns>
        public static bool IsNullableType(this Type type)
        {
            return type != null && type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>);
        }
        /// <summary>
        /// 通过类型转换器获取Nullable类型的基础类型
        /// </summary>
        /// <param name="type"> 要处理的类型对象 </param>
        /// <returns> </returns>
        public static Type GetUnNullableType(this Type type)
        {
            if (IsNullableType(type))
            {
                NullableConverter nullableConverter = new NullableConverter(type);
                return nullableConverter.UnderlyingType;
            }
            return type;
        }
        #region 公共方法
        /// <summary>
        /// 从类型成员获取指定Attribute特性
        /// </summary>
        /// <typeparam name="T">Attribute特性类型</typeparam>
        /// <param name="memberInfo">类型类型成员</param>
        /// <param name="inherit">是否从继承中查找</param>
        /// <returns>存在返回第一个，不存在返回null</returns>
        public static T GetAttribute<T>(this MemberInfo memberInfo, bool inherit = true) where T : Attribute
        {
            var attributes = memberInfo.GetCustomAttributes(typeof(T), inherit);
            return attributes.FirstOrDefault() as T;
        }
        /// <summary>
        /// 把对象类型转换为指定类型
        /// </summary>
        /// <param name="value"></param>
        /// <param name="conversionType"></param>
        /// <returns></returns>
        public static object CastTo(this object value, Type conversionType)
        {
            if (value == null)
            {
                return null;
            }
            if (conversionType.IsNullableType())
            {
                conversionType = conversionType.GetUnNullableType();
            }
            if (conversionType.IsEnum)
            {
                return Enum.Parse(conversionType, value.ToString());
            }
            if (conversionType == typeof(Guid))
            {
                return Guid.Parse(value.ToString());
            }

            if (conversionType == typeof(string)) return value.ToString();
            if (value.GetType() == typeof(JsonElement)) return Convert.ChangeType(value?.ToString(), conversionType);
            return Convert.ChangeType(value, conversionType);
        }

        /// <summary>
        /// 把对象类型转化为指定类型
        /// </summary>
        /// <typeparam name="T"> 动态类型 </typeparam>
        /// <param name="value"> 要转化的源对象 </param>
        /// <returns> 转化后的指定类型的对象，转化失败引发异常。 </returns>
        public static T CastTo<T>(this object value)
        {
            if (value == null || default(T) == null)
            {
                return default;
            }
            if (value.GetType() == typeof(T))
            {
                return (T)value;
            }
            object result = CastTo(value, typeof(T));
            return (T)result;
        }

        /// <summary>
        /// 把对象类型转化为指定类型，转化失败时返回指定的默认值
        /// </summary>
        /// <typeparam name="T"> 动态类型 </typeparam>
        /// <param name="value"> 要转化的源对象 </param>
        /// <param name="defaultValue"> 转化失败返回的指定默认值 </param>
        /// <returns> 转化后的指定类型对象，转化失败时返回指定的默认值 </returns>
        public static T CastTo<T>(this object value, T defaultValue)
        {
            try
            {
                return CastTo<T>(value);
            }
            catch (Exception)
            {
                return defaultValue;
            }
        }

        /// <summary>
        /// 判断当前值是否介于指定范围内
        /// </summary>
        /// <typeparam name="T"> 动态类型 </typeparam>
        /// <param name="value"> 动态类型对象 </param>
        /// <param name="start"> 范围起点 </param>
        /// <param name="end"> 范围终点 </param>
        /// <param name="leftEqual"> 是否可等于上限（默认等于） </param>
        /// <param name="rightEqual"> 是否可等于下限（默认等于） </param>
        /// <returns> 是否介于 </returns>
        public static bool IsBetween<T>(this IComparable<T> value, T start, T end, bool leftEqual = true, bool rightEqual = true) where T : IComparable
        {
            bool flag = leftEqual ? value.CompareTo(start) >= 0 : value.CompareTo(start) > 0;
            return flag && (rightEqual ? value.CompareTo(end) <= 0 : value.CompareTo(end) < 0);
        }

        /// <summary>
        /// 判断当前值是否介于指定范围内
        /// </summary>
        /// <typeparam name="T"> 动态类型 </typeparam>
        /// <param name="value"> 动态类型对象 </param>
        /// <param name="min">范围小值</param>
        /// <param name="max">范围大值</param>
        /// <param name="minEqual">是否可等于小值（默认等于）</param>
        /// <param name="maxEqual">是否可等于大值（默认等于）</param>
        public static bool IsInRange<T>(this IComparable<T> value, T min, T max, bool minEqual = true, bool maxEqual = true) where T : IComparable
        {
            bool flag = minEqual ? value.CompareTo(min) >= 0 : value.CompareTo(min) > 0;
            return flag && (maxEqual ? value.CompareTo(max) <= 0 : value.CompareTo(max) < 0);
        }

        /// <summary>
        /// 是否存在于
        /// </summary>
        public static bool IsIn<T>(this T value, params T[] source)
        {
            return source.Contains(value);
        }

        /// <summary>
        /// 将对象[主要是匿名对象]转换为dynamic
        /// </summary>
        public static dynamic ToDynamic(this object value)
        {
            IDictionary<string, object> expando = new ExpandoObject();
            Type type = value.GetType();
            PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(type);
            foreach (PropertyDescriptor property in properties)
            {
                var val = property.GetValue(value);
                if (property.PropertyType.FullName != null && property.PropertyType.FullName.StartsWith("<>f__AnonymousType"))
                {
                    dynamic dval = val.ToDynamic();
                    expando.Add(property.Name, dval);
                }
                else
                {
                    expando.Add(property.Name, val);
                }
            }
            return (ExpandoObject)expando;
        }

        #endregion
    }
}