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

namespace HT.Cloud.Code
{
	public class ReflectionHelper
	{
		private static ConcurrentDictionary<string, object> dictCache = new ConcurrentDictionary<string, object>();
		private static List<string> exceptionList = new List<string> { "BaseService", "BaseController" };

		#region 得到类里面的属性集合

		/// <summary>
		/// 得到类里面的属性集合
		/// </summary>
		/// <param name="type"></param>
		/// <param name="columns"></param>
		/// <returns></returns>
		public static PropertyInfo[] GetProperties(Type type, string[] columns = null)
		{
			PropertyInfo[] properties = null;
			if (dictCache.ContainsKey(type.FullName))
			{
				properties = dictCache[type.FullName] as PropertyInfo[];
			}
			else
			{
				properties = type.GetProperties();
				dictCache.TryAdd(type.FullName, properties);
			}

			if (columns != null && columns.Length > 0)
			{
				//  按columns顺序返回属性
				var columnPropertyList = new List<PropertyInfo>();
				foreach (var column in columns)
				{
					var columnProperty = properties.Where(p => p.Name == column).FirstOrDefault();
					if (columnProperty != null)
					{
						columnPropertyList.Add(columnProperty);
					}
				}
				return columnPropertyList.ToArray();
			}
			else
			{
				return properties;
			}
		}

		public static object GetObjectPropertyValue<T>(T t, string propertyname)
		{
			Type type = typeof(T);
			PropertyInfo property = type.GetProperty(propertyname);
			if (property == null) return string.Empty;
			object o = property.GetValue(t, null);
			if (o == null) return string.Empty;
			return o;
		}

		#endregion 得到类里面的属性集合

		/// <summary>
		/// StackTrace获取名称
		/// </summary>
		/// <param name="count">搜索层级</param>
		/// <param name="prefix">前缀</param>
		/// <returns></returns>
		public static string GetModuleName(int count = 10, bool isReplace = true, string prefix = "Service")
		{
			try
			{
				string moduleName = "";

				for (int i = 0; i < count; i++)
				{
					if (!string.IsNullOrEmpty(moduleName))
					{
						break;
					}
					string className = new StackFrame(i, true).GetMethod().DeclaringType.FullName;
					className = className.Split('+')[0];
					className = className.Split('.').LastOrDefault();
					bool skip = false;
					foreach (var item in exceptionList)
					{
						if (className.Contains(item))
						{
							skip = true;
							break;
						}
					}
					if (skip)
					{
						continue;
					}
					if (className.IndexOf(prefix) > -1)
					{
						moduleName = className;
						if (isReplace)
						{
							moduleName = moduleName.Replace(prefix, "");
						}
					}
				}
				return moduleName;
			}
			catch (Exception ex)
			{
				LogHelper.WriteWithTime(ex);
				return "";
			}
		}
	}
}