using System;
using System.Collections.Generic;
using System.Dynamic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace APT.Infrastructure.Core
{
	public class ParamDynamicDictionary : DynamicObject
	{   // Fields
		private ICollection<T_PF_PARAM> _dataDictionary = null;
		private object _entityBase = null;
		// Methods
		public ParamDynamicDictionary(ICollection<T_PF_PARAM> dataDictionary, object entityBase)
		{
			if (dataDictionary == null||entityBase==null)
				throw new Exception("参数异常");
			_dataDictionary = dataDictionary;
			_entityBase = entityBase;
		}



		public string this[string key]
		{
			get
			{
				string obj = null;
				if (_dataDictionary != null && _dataDictionary.Count > 0)
				{
					var param = _dataDictionary.FirstOrDefault(t => string.Compare(t.CODE, key, true) == 0);
					if (param != null && !string.IsNullOrEmpty(param.VALUE))
						obj = param.VALUE.Trim();
				}
				return obj;
			}
			set
			{
				if (_dataDictionary != null)
				{
					var param= _dataDictionary.FirstOrDefault(t => string.Compare(t.CODE, key, true) == 0);
					if (param == null)
					{
						param = new T_PF_PARAM();
						param.CODE = key;
						var pro= _entityBase.GetType().GetProperty("ID");
						if (pro != null)
						{
							var idObj= pro.GetValue(_entityBase, null);
							if (idObj != null)
								param.ENTITY_ID = new Guid(idObj.ToString());
						} 
						_dataDictionary.Add(param);
					}
					if (value == null)
						param.VALUE = null;
					else
						param.VALUE = value.Trim();
				} 
			}
		}
		public override IEnumerable<string> GetDynamicMemberNames()
		{
			Dictionary<string, string> dic = new Dictionary<string, string>();
			if (_dataDictionary != null && _dataDictionary.Count > 0)
			{
				foreach (var item in _dataDictionary)
					dic[item.CODE] = item.VALUE;
			}
			return dic.Keys;
		}
		public override bool TryGetMember(GetMemberBinder binder, out object result)
		{
			result = this[binder.Name];
			if (result != null)
				result = result.ToString().Trim();
			return true;
		}
		public override bool TrySetMember(SetMemberBinder binder, object value)
		{
			if (value == null)
				this[binder.Name] = null;
			else
			{
				this[binder.Name] = value.ToString().Trim();
			}
			return true;
		}
	}
}