using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Utils.Security;
using WeighBusiness.BL;
using WeighBusiness.Utils;

namespace WeighBusiness.BO
{
	public class Setting : Base
	{
		public override string TableName { get { return TableNames.配置表; } }

		public string RecentUser { get; set; }
		public string Settings { get; set; }
	}

	public class SettingData
	{
		public long ID { get; set; }
		public long RecentUserID { get; set; }
		public string RecentUserName { get; set; }
		public Dictionary<string, string> Setting { get; set; }

	}
	public static class SettingDataEx
	{

		public static SettingData ToSettingData(this Setting setting, bool all = true)//解密
		{
			var data = new SettingData();
			data.ID = setting.ID;
			var recentUser = SecurityUtil.ChangeBack(setting.RecentUser, UserBL.a);
			SetRecentUser(recentUser, data);
			if (all) {
				var configs = SecurityUtil.ChangeBack(setting.Settings, UserBL.a);
				SetSettings(configs, data);
			}
			return data;
		}

		public static Setting ToSetting(this SettingData data)//加密
		{
			var setting = new Setting();
			setting.ID = data.ID;
			var recentUser = GetRecentUser(data.RecentUserID, data.RecentUserName);
			setting.RecentUser = SecurityUtil.Change(recentUser, UserBL.a);
			var configs = GetConfigs(data.Setting);
			setting.Settings = SecurityUtil.Change(configs, UserBL.a);
			return setting;
		}

		#region private
		private const char Pair = '|';
		private const char ConfigSplit = '=';

		private static void SetRecentUser(string recentUser, SettingData data)
		{
			if (recentUser.IsNullOrEmpty()) {
				SetDefaultRecentUser(data);
				return;
			}
			var pair = recentUser.Split(Pair);
			if (pair.Length == 2) {
				long id;
				if (long.TryParse(pair[0], out id)) {
					data.RecentUserID = id;
					data.RecentUserName = pair[1];
					return;
				}
			}
			SetDefaultRecentUser(data);
		}

		private static void SetSettings(string configs, SettingData data)
		{
			data.Setting = new Dictionary<string, string>();
			var list = configs.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
			if (list == null || list.Length == 0)
				return;
			foreach (var item in list) {
				var pair = item.Split(ConfigSplit);
				if (pair.Length != 2 || pair[0].IsNullOrEmpty())
					continue;
				data.Setting[pair[0]] = pair[1];
			}
		}

		private static void SetDefaultRecentUser(SettingData data)
		{
			data.RecentUserID = 1;
			data.RecentUserName = "system";
		}

		private static string GetRecentUser(long recentUserID, string recentUserName)
		{
			return recentUserID.ToString() + Pair.ToString() + recentUserName;
		}

		private static string GetConfigs(Dictionary<string, string> dictionary)
		{
			if (dictionary == null || dictionary.Count == 0)
				return string.Empty;

			var sb = new StringBuilder();
			bool isFirst = true;
			foreach (var item in dictionary) {
				if (isFirst)
					isFirst = false;
				else
					sb.Append(Environment.NewLine);

				sb.Append(item.Key).Append(ConfigSplit).Append(item.Value);
			}
			return sb.ToString();
		}
		#endregion

	}

}