using MAX.Framework.Commons;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Reflection;

namespace MAX.Framework.Helpers
{
	/// <summary>
	/// App 配置
	/// </summary>
	public class AppConfigHelper
	{
		public static string exeConfigPath = Assembly.GetEntryAssembly()?.Location ?? "";

		public static string GetConnectionString(string name)
		{
			Configuration config = ConfigurationManager.OpenExeConfiguration(exeConfigPath);
			string connection = config.ConnectionStrings.ConnectionStrings[name].ConnectionString ?? "";
			//string connectionString = ConfigurationManager.ConnectionStrings["MyConnectionString"].ConnectionString;
			return connection;
		}
		///<summary> 
		///返回*.exe.config文件中appSettings配置节的value项 
		///</summary> 
		///<param name="strKey"></param> 
		///<returns></returns> 
		public static TValue GetAppConfig<TValue>(string strKey, TValue def = default)
		{
			try
			{
				string value = GetAppConfig(strKey);
				return MAX.Core.Helpers.Convert.To<TValue>(value);
			}
			catch (Exception ex)
			{
				return def;
			}
		}
		///<summary> 
		///返回*.exe.config文件中appSettings配置节的value项 
		///</summary> 
		///<param name="strKey"></param> 
		///<returns></returns> 
		public static string GetAppConfig(string strKey)
		{
			Configuration config = ConfigurationManager.OpenExeConfiguration(exeConfigPath);
			foreach (string key in config.AppSettings.Settings.AllKeys)
			{
				if (key == strKey)
				{
					return config.AppSettings.Settings[strKey].Value.ToString();
				}
			}
			return null;
		}
		public static List<KeyValue> GetAppSettings()
		{
			Configuration config = ConfigurationManager.OpenExeConfiguration(exeConfigPath);
			List<KeyValue> settings = new List<KeyValue>();
			foreach (string key in config.AppSettings.Settings.AllKeys)
			{
				settings.Add(new KeyValue(key, config.AppSettings.Settings[key].Value));

			}
			return settings;
		}

		///<summary> 
		///在*.exe.config文件中appSettings配置节增加一对键值对 
		///</summary> 
		///<param name="newKey"></param> 
		///<param name="newValue"></param> 
		public static void UpdateAppConfig(string newKey, string newValue)
		{
			Configuration config = ConfigurationManager.OpenExeConfiguration(exeConfigPath);
			bool exist = false;
			foreach (string key in config.AppSettings.Settings.AllKeys)
			{
				if (key == newKey)
				{
					exist = true;
				}
			}
			if (exist)
			{
				config.AppSettings.Settings.Remove(newKey);
			}
			config.AppSettings.Settings.Add(newKey, newValue);
			config.Save(ConfigurationSaveMode.Modified);
			ConfigurationManager.RefreshSection("appSettings");
		}

		/// <summary>
		/// 静态类型写入配置文件信息
		/// 名称相同
		/// </summary>
		/// <param name="appType"></param>
		public static void SetAppConfig(Type appType)
		{
			PropertyInfo[] props = appType.GetProperties(BindingFlags.Static | BindingFlags.Public);
			List<KeyValue> settings = GetAppSettings();
			foreach (KeyValue item in settings)
			{
				try
				{
					PropertyInfo prop = props.FirstOrDefault(a => a.Name.ToLower() == item.Key.ToLower());
					if (prop != null)
					{
						object value = Core.Helpers.Convert.To(prop.PropertyType, item.Value);
						prop.SetValue(null, value);
					}
				}
				finally
				{

				}

			}
		}

		/// <summary>
		/// 静态配置文件信息写入到配置文件中
		/// 只写入配置文件中存在的配置项中
		/// </summary>
		/// <param name="appType"></param>
		public static void UpdateAppConfig(Type appType)
		{
			PropertyInfo[] props = appType.GetProperties(BindingFlags.Static | BindingFlags.Public);
			List<KeyValue> settings = GetAppSettings();
			foreach (KeyValue item in settings)
			{
				try
				{
					PropertyInfo prop = props.FirstOrDefault(a => a.Name.ToLower() == item.Key.ToLower());
					if (prop != null)
					{
						object value = prop.GetValue(null);
						if (value?.ToString().ToLower() == item.Value.ToLower())
						{
							continue;
						}
						UpdateAppConfig(item.Key, value?.ToString());
					}
				}
				finally
				{

				}

			}
		}

	}
}