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

namespace Stardust.Data.Monitors
{
    /// <summary>跟踪项。应用下的多个埋点</summary>
    public partial class TraceItem : Entity<TraceItem>
    {
        #region 对象操作
        static TraceItem()
        {
            // 累加字段，生成 Update xx Set Count=Count+1234 Where xxx
            //var df = Meta.Factory.AdditionalFields;
            //df.Add(nameof(AppId));

            // 过滤器 UserModule、TimeModule、IPModule
            Meta.Modules.Add<UserModule>();
            Meta.Modules.Add<TimeModule>();
            Meta.Modules.Add<IPModule>();
        }

        /// <summary>验证并修补数据，通过抛出异常的方式提示验证失败。</summary>
        /// <param name="isNew">是否插入</param>
        public override void Valid(Boolean isNew)
        {
            // 如果没有脏数据，则不需要进行任何处理
            if (!HasDirty) return;

            // 建议先调用基类方法，基类方法会做一些统一处理
            base.Valid(isNew);

            if (Kind == null) Kind = GetKind(Name);
        }

        /// <summary>
        /// 已重载。
        /// </summary>
        /// <returns></returns>
        public override String ToString() => Name;
        #endregion

        #region 扩展属性
        /// <summary>应用</summary>
        [XmlIgnore, IgnoreDataMember]
        public AppTracer App => Extends.Get(nameof(App), k => AppTracer.FindByID(AppId));

        /// <summary>应用</summary>
        [Map(nameof(AppId))]
        public String AppName => App + "";
        #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 TraceItem 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);
        }

        /// <summary>
        /// 根据应用查找
        /// </summary>
        /// <param name="appId"></param>
        /// <returns></returns>
        public static IList<TraceItem> FindAllByApp(Int32 appId)
        {
            if (appId <= 0) return new List<TraceItem>();

            // 实体缓存
            if (Meta.Session.Count < 1000) return Meta.Cache.FindAll(e => e.AppId == appId);

            return FindAll(_.AppId == appId);
        }

        /// <summary>根据应用、操作名查找</summary>
        /// <param name="appId">应用</param>
        /// <param name="name">操作名</param>
        /// <returns>实体对象</returns>
        public static TraceItem FindByAppIdAndName(Int32 appId, String name)
        {
            // 实体缓存
            if (Meta.Session.Count < 1000) return Meta.Cache.Find(e => e.AppId == appId && e.Name.EqualIgnoreCase(name));

            return Find(_.AppId == appId & _.Name == name);
        }
        #endregion

        #region 高级查询
        /// <summary>高级查询</summary>
        /// <param name="appId">应用</param>
        /// <param name="name">操作名。接口名或埋点名</param>
        /// <param name="kind">应用</param>
        /// <param name="enable">启用</param>
        /// <param name="start">更新时间开始</param>
        /// <param name="end">更新时间结束</param>
        /// <param name="key">关键字</param>
        /// <param name="page">分页参数信息。可携带统计和数据权限扩展查询等信息</param>
        /// <returns>实体列表</returns>
        public static IList<TraceItem> Search(Int32 appId, String name, String kind, Boolean? enable, DateTime start, DateTime end, String key, PageParameter page)
        {
            var exp = new WhereExpression();

            if (appId >= 0) exp &= _.AppId == appId;
            if (!name.IsNullOrEmpty()) exp &= _.Name == name;
            if (!kind.IsNullOrEmpty()) exp &= _.Kind == kind;
            if (enable != null) exp &= _.Enable == enable;
            exp &= _.UpdateTime.Between(start, end);
            if (!key.IsNullOrEmpty()) exp &= _.Name.Contains(key) | _.Rules.Contains(key) | _.CreateIP.Contains(key) | _.UpdateUser.Contains(key) | _.UpdateIP.Contains(key) | _.Remark.Contains(key);

            return FindAll(exp, page);
        }

        // Select Count(Id) as Id,Kind From TraceItem Where CreateTime>'2020-01-24 00:00:00' Group By Kind Order By Id Desc limit 20
        static readonly FieldCache<TraceItem> _KindCache = new FieldCache<TraceItem>(nameof(Kind))
        {
            Where = _.CreateTime > DateTime.Today.AddDays(-30) & Expression.Empty
        };

        /// <summary>获取类别列表，字段缓存10分钟，分组统计数据最多的前20种，用于魔方前台下拉选择</summary>
        /// <returns></returns>
        public static IDictionary<String, String> GetKinds() => _KindCache.FindAllName();
        #endregion

        #region 业务操作
        /// <summary>
        /// 获取种类
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public static String GetKind(String name)
        {
            if (name.IsNullOrEmpty()) return null;

            if (name.StartsWithIgnoreCase("/")) return "api";
            if (name.StartsWithIgnoreCase("http://", "https://")) return "http";

            var p = name.IndexOf(':');
            if (p > 0) return name[..p];

            return null;
        }
        #endregion
    }
}