using Muchinfo.PC.Common.Helpers;
using Muchinfo.MTPClient.Infrastructure.Enums;
using System;
using System.Data;

namespace Muchinfo.MTPClient.Infrastructure.Cache
{
    /// <summary>
    /// 缓存数据表类
    /// </summary>
    public class CacheTable : DataTable
    {
        /// <summary>
        /// 缓存数据时间的键
        /// </summary>
        private const string CacheTimeName = "CacheTime";

        /// <summary>
        /// 缓存数据权限的键
        /// </summary>
        private const string PremissionName = "Premission";

        private CacheType _type;

        /// <summary>
        /// 获取或设置缓存表类型
        /// </summary>
        public CacheType Type
        {
            get { return this._type; }
        }

        private DateTime _cacheTime;

        /// <summary>
        /// 获取或设置最后请求缓存数据的时间
        /// </summary>
        public DateTime CacheTime
        {
            get
            {
                return this._cacheTime;
            }

            set
            {
                this._cacheTime = value;
                string cacheTime = value.ToString(FormatHelper.DateTimeFormat2);
                if (this.ExtendedProperties.Contains(CacheTable.CacheTimeName))
                {
                    ExtendedProperties[CacheTable.CacheTimeName] = cacheTime;
                }
                else
                {
                    ExtendedProperties.Add(CacheTable.CacheTimeName, cacheTime);
                }
            }
        }

        private string m_Premission;

        /// <summary>
        /// 获取或设置请求缓存使用的权限
        /// </summary>
        public string Premission
        {
            get
            {
                return m_Premission;
            }

            set
            {
                m_Premission = value;
                if (this.ExtendedProperties.Contains(CacheTable.PremissionName))
                {
                    ExtendedProperties[CacheTable.PremissionName] = value;
                }
                else
                {
                    ExtendedProperties.Add(CacheTable.PremissionName, value);
                }
            }
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="CacheTable"/> class.
        /// </summary>
        /// <param name="type">缓存数据类型</param>
        public CacheTable(CacheType type)
        {
            this._type = type;
            this.TableName = type.ToString();
        }

        internal void InitExtentProperties()
        {
            this._type = (CacheType)Enum.Parse(typeof(CacheType), TableName);

            if (this.ExtendedProperties.Contains(CacheTable.CacheTimeName))
            {
                DateTime.TryParse(string.Empty + ExtendedProperties[CacheTable.CacheTimeName], out _cacheTime);
            }

            if (this.ExtendedProperties.Contains(CacheTable.PremissionName))
            {
                this.m_Premission = string.Empty + ExtendedProperties[CacheTable.PremissionName];
            }
        }
    }
}