using NewLife;
using NewLife.Data;
using System;
using System.Collections.Generic;
using System.Web.Script.Serialization;
using System.Xml.Serialization;
using XCode;
using XCode.Cache;
using XCode.Membership;

namespace Stardust.Data.Nodes
{
    /// <summary>节点历史</summary>
    public partial class NodeHistory : Entity<NodeHistory>
    {
        #region 对象操作
        static NodeHistory()
        {
            Meta.Table.DataTable.InsertOnly = true;

            Meta.Modules.Add<TimeModule>();
            Meta.Modules.Add<IPModule>();
        }

        /// <summary>插入或修改时</summary>
        /// <param name="isNew"></param>
        public override void Valid(Boolean isNew)
        {
            base.Valid(isNew);

            // 截断日志
            var len = _.Remark.Length;
            if (!Remark.IsNullOrEmpty() && len > 0 && Remark.Length > len) Remark = Remark.Substring(0, len);
        }
        #endregion

        #region 扩展属性
        /// <summary>节点</summary>
        [XmlIgnore, ScriptIgnore]
        public Node Node => Extends.Get(nameof(Node), k => Node.FindByID(NodeID));

        /// <summary>节点</summary>
        [Map(__.NodeID)]
        public String NodeName => Node + "";

        /// <summary>省份</summary>
        [XmlIgnore, ScriptIgnore]
        public Area Province => Extends.Get(nameof(Province), k => Area.FindByID(ProvinceID));

        /// <summary>省份名</summary>
        [Map(__.ProvinceID)]
        public String ProvinceName => Province + "";

        /// <summary>城市</summary>
        [XmlIgnore, ScriptIgnore]
        public Area City => Extends.Get(nameof(City), k => Area.FindByID(CityID));

        /// <summary>城市名</summary>
        [Map(__.CityID)]
        public String CityName => City?.Path;
        #endregion

        #region 扩展查询
        /// <summary>根据编号查找</summary>
        /// <param name="id">编号</param>
        /// <returns>实体对象</returns>
        public static NodeHistory FindByID(Int32 id)
        {
            if (id <= 0) return null;

            //// 实体缓存
            //if (Meta.Session.Count < 1000) return Meta.Cache.Find(e => e.ID == id);

            //// 单对象缓存
            //return Meta.SingleCache[id];

            return Find(_.ID == id);
        }
        #endregion

        #region 高级查询
        /// <summary>高级搜索</summary>
        /// <param name="nodeId"></param>
        /// <param name="provinceId">省份</param>
        /// <param name="cityId">城市</param>
        /// <param name="action"></param>
        /// <param name="success"></param>
        /// <param name="start"></param>
        /// <param name="end"></param>
        /// <param name="key"></param>
        /// <param name="page"></param>
        /// <returns></returns>
        public static IList<NodeHistory> Search(Int32 nodeId, Int32 provinceId, Int32 cityId, String action, Boolean? success, DateTime start, DateTime end, String key, PageParameter page)
        {
            var exp = new WhereExpression();

            if (nodeId > 0) exp &= _.NodeID == nodeId;
            if (provinceId >= 0) exp &= _.ProvinceID == provinceId;
            if (cityId >= 0) exp &= _.CityID == cityId;
            if (!action.IsNullOrEmpty()) exp &= _.Action.In(action.Split(","));
            if (success != null) exp &= _.Success == success;

            // 主键带有时间戳
            var flow = Meta.Factory.Snow;
            if (flow != null)
                exp &= _.ID.Between(start, end, flow);
            else
                exp &= _.CreateTime.Between(start, end);

            if (!key.IsNullOrEmpty())
            {
                exp &= (_.Name.Contains(key) | _.Remark.Contains(key) | _.CreateIP.Contains(key));
            }

            return FindAll(exp, page);
        }
        #endregion

        #region 扩展操作
        /// <summary>类别名实体缓存，异步，缓存10分钟</summary>
        static FieldCache<NodeHistory> ActionCache = new FieldCache<NodeHistory>(__.Action);

        /// <summary>获取所有类别名称</summary>
        /// <returns></returns>
        public static IDictionary<String, String> FindAllActionName() => ActionCache.FindAllName();
        #endregion

        #region 业务
        /// <summary>创建日志</summary>
        /// <param name="node"></param>
        /// <param name="action"></param>
        /// <param name="success"></param>
        /// <param name="remark"></param>
        /// <param name="creator"></param>
        /// <param name="ip"></param>
        /// <returns></returns>
        public static NodeHistory Create(Node node, String action, Boolean success, String remark, String creator, String ip)
        {
            if (node == null) node = new Node();

            var history = new NodeHistory
            {
                NodeID = node.ID,
                Name = node.Name,
                Action = action,
                Success = success,

                ProvinceID = node.ProvinceID,
                CityID = node.CityID,

                Version = node.Version,
                CompileTime = node.CompileTime,

                Remark = remark,

                Creator = creator,
                CreateTime = DateTime.Now,
                CreateIP = ip,
            };

            history.SaveAsync();

            return history;
        }

        static Lazy<FieldCache<NodeHistory>> NameCache = new Lazy<FieldCache<NodeHistory>>(() => new FieldCache<NodeHistory>(__.Action));
        /// <summary>获取所有分类名称</summary>
        /// <returns></returns>
        public static IDictionary<String, String> FindAllAction() => NameCache.Value.FindAllName();
        #endregion
    }
}