using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;

namespace JiepeiWMS.Common
{
    /// <summary>
    ///对象实例操作类
    /// </summary>
    public class ComRefObj
    {
        /// <summary>
        ///构造对象实例操作类
        /// </summary>
        public ComRefObj(object Obj)
        {
            _Obj = Obj;
            _Type = Obj.GetType();
            _Attrs = _Type.GetProperties();
        }
        /// <summary>
        ///构造对象实例操作类
        /// </summary>
        public ComRefObj(Type Tp)
        {
            _Obj = Tp;
            _Type = Tp;
            _Attrs = _Type.GetProperties();
        }
        object _Obj;
        Type _Type;
        PropertyInfo[] _Attrs;
        /// <summary>
        /// 获取对象的属性值(不区分大小写属性名)
        /// </summary>
        /// <returns>属性值</returns>
        public T GetAttr<T>(string Name)
        {
            return GetAttr(Name, default(T));
        }
        /// <summary>
        /// 获取对象的属性值(不区分大小写属性名)
        /// </summary>
        /// <returns>属性值</returns>
        public T GetAttr<T>(string Name, T DefaultValue)
        {
            Name = Name.ToLower();
            var i = _Attrs.FirstOrDefault(it => it.Name.ToLower() == Name);
            if (i == null) { return DefaultValue; }
            return (T)i.GetValue(_Obj, null);
        }
        /// <summary>
        /// 获取对象的属性值
        /// </summary>
        /// <returns>属性值</returns>
        public T GetAttr<T>(string Name, bool IsIgnoreCase, T DefaultValue = default(T))
        {
            System.Reflection.PropertyInfo p;
            if (IsIgnoreCase)
            {
                Name = Name.ToLower();
                p = _Attrs.FirstOrDefault(t => t.Name.ToLower() == Name);
            }
            else
            {
                p = _Attrs.FirstOrDefault(t => t.Name == Name);
            }
            if (p == null) { return (T)DefaultValue; }
            return (T)p.GetValue(_Obj, null);
        }
        /// <summary>
        /// 获取对象的属性值
        /// </summary>
        /// <returns>属性值</returns>
        public object GetAttr(string Name, bool IsIgnoreCase)
        {
            System.Reflection.PropertyInfo p;
            if (IsIgnoreCase)
            {
                Name = Name.ToLower();
                p = _Attrs.FirstOrDefault(t => t.Name.ToLower() == Name);
            }
            else
            {
                p = _Attrs.FirstOrDefault(t => t.Name == Name);
            }
            if (p == null) { return null; }
            return p.GetValue(_Obj, null);
        }
        /// <summary>
        /// 设置对象的属性值(不区分大小写属性名)
        /// </summary>
        /// <returns>自身</returns>
        public ComRefObj SetAttr<T>(string Name, T Value)
        {
            Name = Name.ToLower();
            var i = _Attrs.FirstOrDefault(it => it.Name.ToLower() == Name);
            if (i != null) { i.SetValue(_Obj, Value, null); }
            return this;
        }
        /// <summary>
        /// 设置对象的属性值
        /// </summary>
        /// <returns>自身</returns>
        public ComRefObj SetAttr<T>(string Name, T Value, bool IsIgnoreCase)
        {
            PropertyInfo p;
            if (IsIgnoreCase)
            {
                Name = Name.ToLower();
                p = _Attrs.FirstOrDefault(t => t.Name.ToLower() == Name);
            }
            else
            {
                p = _Attrs.FirstOrDefault(t => t.Name == Name);
            }
            if (p != null) { p.SetValue(_Obj, Value, null); }
            return this;
        }
        /// <summary>
        /// 设置模型(只操作属性方法和字段不操作)
        /// </summary>
        /// <typeparam name="MT">模型类型</typeparam>
        /// <param name="Model">被读取属性值的模型</param>
        /// <param name="NotSetNames">不设置的属性名</param>
        /// <returns>自身</returns>
        public ComRefObj Set<MT>(MT Model, string[] NotSetNames)
        {
            var pts = Model.GetType().GetProperties().ToDictionary(t => t.Name);
            foreach (var n in NotSetNames)
            {
                if (pts.ContainsKey(n)) { pts.Remove(n); }
            }
            PropertyInfo gp;
            foreach (var p in _Attrs)
            {
                if (pts.TryGetValue(p.Name, out gp))
                {
                    p.SetValue(_Obj, gp.GetValue(Model, null), null);
                }
            }
            return this;
        }
    }
}