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

namespace CommonTool
{
	
	public  class ModelToStr	
	{
		/// <summary>
		/// 把实体对象的属性与值变成字符串
		/// </summary>
		/// <param name="model">实体对象</param>
		/// <returns></returns>
		public static string ToModelStr<T>(T model)
			where T : class, new()
		{
			if (model == null) return "";
			string sb = "";
			Type type = model.GetType();
			PropertyInfo[] propertys = type.GetProperties();
			foreach (PropertyInfo prop in propertys)
			{
				PropertyInfo property = type.GetProperty(prop.Name);
				object val = property.GetValue(model, null);
				string value = val?.ToString().Trim() ?? "";
				sb += prop.Name + '-' + value + '|';
			}
			if (sb.Length <= 0) return sb;
			sb = sb.Substring(0, sb.Length - 1);
			return sb;
		}

		/// <summary>
		/// 把实体对象的属性与值变成字符串
		/// </summary>
		/// <returns></returns>
		public static T ToStrModel<T>(string modelStr)
			where T : class, new()
		{
			if (modelStr == null)
				return null;
			T model=new T();
			Type type = model.GetType();
			Dictionary<string,object> dict=new Dictionary<string, object>();
			PropertyInfo[] propertys = type.GetProperties();
			string[] objs = modelStr.Split('|');
			foreach (string obj in objs)
			{
				string[] str = obj.Split('-');
				dict[str[0]] = str[1];
			}
			foreach (PropertyInfo prop in propertys)
			{
				string propType = prop.PropertyType.ToString().ToLower();
				if (dict[prop.Name].ToString() == "")
					dict[prop.Name] = null;
				PropertyInfo property = type.GetProperty(prop.Name);
				object value = null;
				if (propType.Contains("decimal"))
				{
					if (dict[prop.Name] != null)
						value = Convert.ToDecimal(dict[prop.Name]);
				}
				else if (propType.Contains("decimal"))
				{
					if (dict[prop.Name] != null)
						value = Convert.ToDecimal(dict[prop.Name]);
				}
				else if (propType.Contains("int32"))
				{
					if (dict[prop.Name] != null)
						value = Convert.ToInt32(dict[prop.Name]);
				}
				else if (propType.Contains("int64"))
				{
					if (dict[prop.Name] != null)
						value = Convert.ToInt32(dict[prop.Name]);
				}
				else if (propType.Contains("datetime"))
				{
					if (dict[prop.Name] != null)
						value = Convert.ToDateTime(dict[prop.Name]);
				}
				else
				{
					value = dict[prop.Name];
				}
				property.SetValue(model,value,null);
			}
			return model;
		}


		/// <summary>
		/// 把实体对象的属性与值转成字符串再转成实体对象
		/// </summary>
		/// <param name="model">实体对象</param>
		/// <returns></returns>
		public static T ModelStrModel<T>(T model)
			where T : class, new()
		{
			if (model == null)
				return null;
			return ToStrModel<T>(ToModelStr(model));
		}
	}
}