using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Web.Script.Serialization;
using System.Xml.Serialization;
using NewLife;
using NewLife.Data;
using Stardust.Monitors;
using XCode;
using XCode.Cache;
using XCode.Membership;

namespace Stardust.Data
{
    /// <summary>应用系统。服务提供者和消费者</summary>
    [ModelCheckMode(ModelCheckModes.CheckTableWhenFirstUse)]
    public partial class App : Entity<App>
    {
        #region 对象操作
        static App()
        {
            // 累加字段
            //var df = Meta.Factory.AdditionalFields;
            //df.Add(__.Services);

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

            // 单对象缓存
            var sc = Meta.SingleCache;
            sc.FindSlaveKeyMethod = k => Find(__.Name, k);
            sc.GetSlaveKeyMethod = e => e.Name;
        }

        /// <summary>验证数据，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;

            // 这里验证参数范围，建议抛出参数异常，指定参数名，前端用户界面可以捕获参数异常并聚焦到对应的参数输入框
            if (Name.IsNullOrEmpty()) throw new ArgumentNullException(nameof(Name), "名称不能为空！");

            if (isNew && !Dirtys[__.AutoActive]) AutoActive = true;
        }
        #endregion

        #region 扩展属性
        /// <summary>服务提供者</summary>
        [XmlIgnore, ScriptIgnore, IgnoreDataMember]
        public IList<AppService> Providers => Extends.Get(nameof(Providers), k => AppService.FindAllByAppId(Id));

        /// <summary>服务消费者</summary>
        [XmlIgnore, ScriptIgnore, IgnoreDataMember]
        public IList<AppConsume> Consumers => Extends.Get(nameof(Consumers), k => AppConsume.FindAllByAppId(Id));
        #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 App 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>根据名称查找</summary>
        /// <param name="name">名称</param>
        /// <returns>实体对象</returns>
        public static App FindByName(String name)
        {
            if (name.IsNullOrEmpty()) return null;

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

            // 单对象缓存
            //return Meta.SingleCache.GetItemWithSlaveKey(name) as App;

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

        #region 高级查询
        /// <summary>高级搜索</summary>
        /// <param name="category"></param>
        /// <param name="start"></param>
        /// <param name="enable"></param>
        /// <param name="end"></param>
        /// <param name="key"></param>
        /// <param name="page"></param>
        /// <returns></returns>
        public static IList<App> Search(String category, Boolean? enable, DateTime start, DateTime end, String key, PageParameter page)
        {
            var exp = new WhereExpression();

            if (!category.IsNullOrEmpty()) exp &= _.Category == category;
            if (enable != null) exp &= _.Enable == enable;
            exp &= _.UpdateTime.Between(start, end);
            if (!key.IsNullOrEmpty()) exp &= _.Name.Contains(key) | _.DisplayName.Contains(key);

            return FindAll(exp, page);
        }

        /// <summary>类别名实体缓存，异步，缓存10分钟</summary>
        private static readonly Lazy<FieldCache<App>> CategoryCache = new(() => new FieldCache<App>(__.Category)
        {
            Where = _.UpdateTime > DateTime.Today.AddDays(-30) & Expression.Empty,
            MaxRows = 50
        });

        /// <summary>获取所有类别名称</summary>
        /// <returns></returns>
        public static IDictionary<String, String> FindAllCategory() => CategoryCache.Value.FindAllName().OrderByDescending(e => e.Key).ToDictionary(e => e.Key, e => e.Value);
        #endregion

        #region 业务操作
        /// <summary>更新信息</summary>
        /// <param name="model"></param>
        /// <param name="ip"></param>
        public static void UpdateInfo(TraceModel model, String ip)
        {
            // 修复数据
            var app = FindByName(model.AppId);
            if (app == null) app = new App { Name = model.AppId, DisplayName = model.AppName, Enable = true };
            if (app.DisplayName.IsNullOrEmpty()) app.DisplayName = model.AppName;
            app.Save();

            // 更新应用信息
            if (app != null && model.Info != null)
            {
                //// 严格来说，应该采用公网IP+内外IP+进程ID才能够保证比较高的唯一性，这里为了简单，直接使用公网IP
                //// 同时，还可能存在多层NAT网络的情况，很难保证绝对唯一
                //var clientId = ip;
                //var ss = model.ClientId.Split('@');
                //if (ss.Length >= 2) clientId = $"{ip}@{ss[1]}";

                //var online = Data.AppOnline.GetOrAddClient(clientId);
                //online.Category = app.Category;
                //online.PingCount++;
                //online.Version = model.Version;
                //if (online.CreateIP.IsNullOrEmpty()) online.CreateIP = ip;
                //online.UpdateInfo(app, model.Info);

                // 优先使用clientId内部的内网本机IP作为跟踪数据客户端实例
                if (!model.ClientId.IsNullOrEmpty() && model.ClientId.Contains("@")) ip = model.ClientId.Substring(null, "@");
                AppMeter.WriteData(app, model.Info, ip);
            }
        }

        /// <summary>写应用历史</summary>
        /// <param name="action"></param>
        /// <param name="success"></param>
        /// <param name="remark"></param>
        /// <param name="ip"></param>
        public void WriteHistory(String action, Boolean success, String remark, String ip)
        {
            var history = AppHistory.Create(this, action, success, remark, Environment.MachineName, ip);

            history.SaveAsync();
        }
        #endregion
    }
}