using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using Microsoft.SqlServer.Server;
using System.IO;

namespace BITKit
{
    /// <summary>
    /// 属性接口，用于序列化引用
    /// </summary>
    public interface IProperty
    {

    }
    /// <summary>
    ///     属性接口
    ///     GetOrCreate(√)
    ///     GetOrAdd(√)
    ///     TryGet(√)
    ///     TryRemove(√)
    ///     TrySet(√)
    ///     GetProperties(√)
    /// </summary>
    public interface IPropertable: IBinarySerialize
    {
        /// <summary>
        /// 是否拥有属性
        /// </summary>
        bool Contains<T>();
        /// <summary>
        /// 获取或创建属性
        /// </summary>
        T GetOrCreateProperty<T>();
        /// <summary>
        /// 获取或通过工厂方法添加属性
        /// </summary>
        T GetOrAddProperty<T>(Func<T> addFactory);
        /// <summary>
        /// 尝试获取属性
        /// </summary>
        bool TryGetProperty<T>(out T value);
        /// <summary>
        /// 尝试移除属性
        /// </summary>
        bool TryRemoveProperty<T>();
        /// <summary>
        /// 尝试设置属性
        /// </summary>
        bool TrySetProperty<T>(T value);
        /// <summary>
        /// 获取所有属性
        /// </summary>
        object[] GetProperties();
        /// <summary>
        /// 清除所有属性
        /// </summary>
        /// <returns></returns>
        bool ClearProperties();
        /// <summary>
        /// 从其他对象复制属性
        /// </summary>
        /// <param name="propertable"></param>
        /// <returns></returns>
        bool CopyPropertiesFrom(IPropertable propertable);
    }
    public class Property : IPropertable
    {
        public Property() { }
        public Property(IEnumerable<object> factory) 
        {
            foreach (var x in factory)
            {
                properties.Add(x.GetType().FullName, x);
            }
        }
        Dictionary<string, object> properties=new();
        public T GetProperty<T>()
        {
            return (T)properties[typeof(T).FullName];
        }
        public void SetProperty<T>(T value)
        {
            properties.Insert(typeof(T).FullName, value);
        }
        public bool Contains<T>()
        {
            return properties.ContainsKey(typeof(T).FullName);
        }

        public T GetOrCreateProperty<T>()
        {
            return GetOrAddProperty(Activator.CreateInstance<T>);
        }
        public T GetOrAddProperty<T>(Func<T> addFactory)
        {
            if (properties.TryGetValue(typeof(T).FullName, out var x))
            {
                return (T)x;
            }
            else
            {
                properties.Add(typeof(T).FullName, x = addFactory.Invoke());
                return (T)x;
            }
        }
        public bool TryGetProperty<T>(out T value)
        {
            if (properties.TryGetValue(typeof(T).FullName, out var x))
            {
                value = (T)x;
                return true;
            }
            else
            {
                value=default(T);
                return false;
            }
        }
        public bool TryRemoveProperty<T>()
        {
            if(properties.TryGetValue(typeof(T).FullName, out var x))
            {
                properties.Remove(typeof(T).Name);
                return true;
            }
            return false;
        }
        public bool TrySetProperty<T>(T value)
        {
            if (properties.TryGetValue(typeof(T).FullName, out var x))
            {
                properties[typeof(T).FullName] = value; 
                return true;
            }
            else
            {
                return false;
            }
        }
        public object[] GetProperties()=>properties.Values.ToArray();

        public void Read(BinaryReader r)
        {
            foreach (var x in properties)
            {

            }
        }

        public void Write(BinaryWriter w)
        {
            throw new NotImplementedException();
        }

        public bool ClearProperties()
        {
            properties.Clear();
            return true;
        }

        public bool CopyPropertiesFrom(IPropertable propertable)
        {
            ClearProperties();
            foreach (var x in propertable.GetProperties())
            {
                properties.Add(x.GetType().FullName, x);
            }
            return true;
        }
    }
}