#region Apache License Version 2.0
/*----------------------------------------------------------------

Copyright 2019 Jeffrey Su & Suzhou Senparc Network Technology Co.,Ltd.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the
License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
either express or implied. See the License for the specific language governing permissions
and limitations under the License.

Detail: https://github.com/JeffreySu/WeiXinMPSDK/blob/master/license.md

----------------------------------------------------------------*/
#endregion Apache License Version 2.0

/*----------------------------------------------------------------
    Copyright (C) 2019 Senparc

    文件名：JsApiTicketContainer.cs
    文件功能描述：通用接口JsApiTicket容器，用于自动管理JsApiTicket，如果过期会重新获取


    创建标识：Senparc - 20150313

    修改标识：Senparc - 20150313
    修改描述：整理接口

    修改标识：Senparc - 20160312
    修改描述：升级Container，继承自BaseContainer<JsApiTicketBag>

    修改标识：Senparc - 20160318
    修改描述：v3.3.4 使用FlushCache.CreateInstance使注册过程立即生效

    修改标识：Senparc - 20160717
    修改描述：v3.3.8 添加注册过程中的Name参数
    
    修改标识：Senparc - 20160803
    修改描述：v4.1.2 使用ApiUtility.GetExpireTime()方法处理过期
 
    修改标识：Senparc - 20160804
    修改描述：v4.1.3 增加TryGetTicketAsync，GetTicketAsync，GetTicketResultAsync的异步方法
    
    修改标识：Senparc - 20160813
    修改描述：v4.1.5 添加TryReRegister()方法，处理分布式缓存重启（丢失）的情况

    修改标识：Senparc - 20160813
    修改描述：v4.1.6 完善GetToken()方法
    
    修改标识：Senparc - 20160813
    修改描述：v4.1.8 修改命名空间为Senparc.Weixin.Work.Containers

    修改标识：Senparc - 20161003
    修改描述：v4.1.11 修复GetTicketResult()方法中的CheckRegistered()参数错误（少了appSecret）

    修改标识：Senparc - 20180614
    修改描述：CO2NET v0.1.0 ContainerBag 取消属性变动通知机制，使用手动更新缓存

    修改标识：Senparc - 20180707
    修改描述：v2.0.9  1、Container 的 Register() 的微信参数自动添加到 Config.SenparcWeixinSetting.Items 下
                      2、AccessTokenBag 的 AppId 和 Secret 属性名称改为 CorpId 和 CorpSecret

    修改标识：Senparc - 20181226
    修改描述：v3.3.2 修改 DateTime 为 DateTimeOffset

    修改标识：Senparc - 20190320
    修改描述：v3.3.10 修改 Copr 错别字，修正为 Corp
    
    修改标识：Senparc - 20190422
    修改描述：v3.4.0 支持异步 Container
    
    修改标识：Senparc - 20190504
    修改描述：v3.5.2 完善 Container 注册委托的储存类型，解决多账户下的注册冲突问题
        
    修改标识：Senparc - 20190504
    修改描述：v3.5.2 完善 Container 注册委托的储存类型，解决多账户下的注册冲突问题

----------------------------------------------------------------*/

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Senparc.CO2NET.CacheUtility;
using Senparc.Weixin.Containers;
using Senparc.Weixin.Exceptions;
using Senparc.Weixin.Work.CommonAPIs;
using Senparc.Weixin.Work.Entities;
using Senparc.Weixin.Work.Exceptions;
using Senparc.Weixin.Utilities.WeixinUtility;
using Senparc.CO2NET.Extensions;

namespace Senparc.Weixin.Work.Containers
{
    /// <summary>
    /// JsApiTicketBag
    /// </summary>
    [Serializable]
    public class JsApiTicketBag : BaseContainerBag
    {
        /// <summary>
        /// CorpId
        /// </summary>
        public string CorpId { get; set; }

        [Obsolete("请使用 CorpId 属性")]
        public string CoprId { get { return CorpId; } set { CorpId = value; } }
        //        {
        //            get { return _appId; }
        //#if NET35 || NET40
        //            set { this.SetContainerProperty(ref _appId, value, "AppId"); }
        //#else
        //            set { this.SetContainerProperty(ref _appId, value); }
        //#endif
        //        }

        public string CorpSecret { get; set; }
        //        {
        //            get { return _appSecret; }
        //#if NET35 || NET40
        //            set { this.SetContainerProperty(ref _appSecret, value, "AppSecret"); }
        //#else
        //            set { this.SetContainerProperty(ref _appSecret, value); }
        //#endif
        //        }

        public JsApiTicketResult JsApiTicketResult { get; set; }
        //        {
        //            get { return _jsApiTicketResult; }
        //#if NET35 || NET40
        //            set { this.SetContainerProperty(ref _jsApiTicketResult, value, "JsApiTicketResult"); }
        //#else
        //            set { this.SetContainerProperty(ref _jsApiTicketResult, value); }
        //#endif
        //        }

        public DateTimeOffset ExpireTime { get; set; }
        //        {
        //            get { return _expireTime; }
        //#if NET35 || NET40
        //            set { this.SetContainerProperty(ref _expireTime, value, "ExpireTime"); }
        //#else
        //            set { this.SetContainerProperty(ref _expireTime, value); }
        //#endif
        //        }

        /// <summary>
        /// 只针对这个AppId的锁
        /// </summary>
        internal object Lock = new object();

        //private DateTime _expireTime;
        //private JsApiTicketResult _jsApiTicketResult;
        //private string _appSecret;
        //private string _appId;
    }

    /// <summary>
    /// 通用接口JsApiTicket容器，用于自动管理JsApiTicket，如果过期会重新获取
    /// </summary>
    public class JsApiTicketContainer : BaseContainer<JsApiTicketBag>
    {
        private const string UN_REGISTER_ALERT = "此AppId尚未注册，JsApiTicketContainer.Register完成注册（全局执行一次即可）！";

        /// <summary>
        /// 注册应用凭证信息，此操作只是注册，不会马上获取Ticket，并将清空之前的Ticket，
        /// </summary>
        /// <param name="appId"></param>
        /// <param name="appSecret"></param>
        /// <param name="name">标记JsApiTicket名称（如微信公众号名称），帮助管理员识别。当 name 不为 null 和 空值时，本次注册内容将会被记录到 Senparc.Weixin.Config.SenparcWeixinSetting.Items[name] 中，方便取用。</param>
        /// 此接口无异步方法
        private static string BuildingKey(string corpId, string corpSecret)
        {
            return corpId + corpSecret;
        }

        #region 同步方法

        /// <summary>
        /// 注册应用凭证信息，此操作只是注册，不会马上获取Token，并将清空之前的Token，
        /// </summary>
        /// <param name="corpId"></param>
        /// <param name="corpSecret"></param>
        /// <param name="name">标记AccessToken名称（如微信公众号名称），帮助管理员识别。当 name 不为 null 和 空值时，本次注册内容将会被记录到 Senparc.Weixin.Config.SenparcWeixinSetting.Items[name] 中，方便取用。</param>

        [Obsolete("请使用 RegisterAsync() 方法")]
        public static void Register(string corpId, string corpSecret, string name = null)
        {
            RegisterAsync(corpId, corpSecret, name).Wait();
        }

        /// <summary>
        /// 使用完整的应用凭证获取Ticket，如果不存在将自动注册
        /// </summary>
        /// <param name="appId"></param>
        /// <param name="appSecret"></param>
        /// <param name="getNewTicket"></param>
        /// <returns></returns>
        public static string TryGetTicket(string appId, string appSecret, bool getNewTicket = false)
        {
            if (!CheckRegistered(BuildingKey(appId, appSecret)) || getNewTicket)
            {
                Register(appId, appSecret);
            }
            return GetTicket(appId, appSecret, getNewTicket);
        }

        /// <summary>
        /// 获取可用Ticket
        /// </summary>
        /// <param name="appId"></param>
        /// <param name="getNewTicket">是否强制重新获取新的Ticket</param>
        /// <returns></returns>
        public static string GetTicket(string appId, string appSecret, bool getNewTicket = false)
        {
            return GetTicketResult(appId, appSecret, getNewTicket).ticket;
        }

        /// <summary>
        /// 获取可用Ticket
        /// </summary>
        /// <param name="appId"></param>
        /// <param name="getNewTicket">是否强制重新获取新的Ticket</param>
        /// <returns></returns>
        public static JsApiTicketResult GetTicketResult(string appId, string appSecret, bool getNewTicket = false)
        {
            if (!CheckRegistered(BuildingKey(appId, appSecret)))
            {
                throw new WeixinWorkException(UN_REGISTER_ALERT);
            }

            var jsApiTicketBag = TryGetItem(BuildingKey(appId, appSecret));
            lock (jsApiTicketBag.Lock)
            {
                if (getNewTicket || jsApiTicketBag.ExpireTime <= SystemTime.Now)
                {
                    //已过期，重新获取
                    jsApiTicketBag.JsApiTicketResult = CommonApi.GetTicket(jsApiTicketBag.CorpId, jsApiTicketBag.CorpSecret);
                    jsApiTicketBag.ExpireTime = ApiUtility.GetExpireTime(jsApiTicketBag.JsApiTicketResult.expires_in);
                    Update(jsApiTicketBag, null);//更新到缓存
                }
            }
            return jsApiTicketBag.JsApiTicketResult;
        }

        ///// <summary>
        ///// 检查是否已经注册
        ///// </summary>
        ///// <param name="appId"></param>
        ///// <returns></returns>
        ///// 此接口无异步方法
        //public new static bool CheckRegistered(string appId)
        //{
        //    return Cache.CheckExisted(appId);
        //}

        #endregion


        #region 异步方法

        /// <summary>
        /// 【异步方法】注册应用凭证信息，此操作只是注册，不会马上获取Ticket，并将清空之前的Ticket
        /// </summary>
        /// <param name="corpId"></param>
        /// <param name="corpSecret"></param>
        /// <param name="name"></param>
        /// <returns></returns>
        public static async Task RegisterAsync(string corpId, string corpSecret, string name = null)
        {
            //记录注册信息，RegisterFunc委托内的过程会在缓存丢失之后自动重试
            var shortKey = BuildingKey(corpId, corpSecret);
            RegisterFuncCollection[shortKey] = async () =>
            {
                //using (FlushCache.CreateInstance())
                //{
                var bag = new JsApiTicketBag()
                {
                    Name = name,
                    CorpId = corpId,
                    CorpSecret = corpSecret,
                    ExpireTime = DateTimeOffset.MinValue,
                    JsApiTicketResult = new JsApiTicketResult()
                };
                await UpdateAsync(BuildingKey(corpId, corpSecret), bag, null).ConfigureAwait(false);
                return bag;
                //}
            };
            await RegisterFuncCollection[shortKey]().ConfigureAwait(false);

            if (!name.IsNullOrEmpty())
            {
                Senparc.Weixin.Config.SenparcWeixinSetting.Items[name].WeixinCorpId = corpId;
                Senparc.Weixin.Config.SenparcWeixinSetting.Items[name].WeixinCorpSecret = corpSecret;
            }
        }

        /// <summary>
        /// 【异步方法】使用完整的应用凭证获取Ticket，如果不存在将自动注册
        /// </summary>
        /// <param name="appId"></param>
        /// <param name="appSecret"></param>
        /// <param name="getNewTicket"></param>
        /// <returns></returns>
        public static async Task<string> TryGetTicketAsync(string appId, string appSecret, bool getNewTicket = false)
        {
            if (!await CheckRegisteredAsync(BuildingKey(appId, appSecret)).ConfigureAwait(false) || getNewTicket)
            {
                await RegisterAsync(appId, appSecret).ConfigureAwait(false);
            }
            return await GetTicketAsync(appId, appSecret, getNewTicket).ConfigureAwait(false);
        }

        /// <summary>
        /// 【异步方法】获取可用Ticket
        /// </summary>
        /// <param name="appId"></param>
        /// <param name="getNewTicket">是否强制重新获取新的Ticket</param>
        /// <returns></returns>
        public static async Task<string> GetTicketAsync(string appId, string appSecret, bool getNewTicket = false)
        {
            var result = await GetTicketResultAsync(appId, appSecret, getNewTicket).ConfigureAwait(false);
            return result.ticket;
        }

        /// <summary>
        /// 【异步方法】获取可用Ticket
        /// </summary>
        /// <param name="appId"></param>
        /// <param name="getNewTicket">是否强制重新获取新的Ticket</param>
        /// <returns></returns>
        public static async Task<JsApiTicketResult> GetTicketResultAsync(string appId, string appSecret, bool getNewTicket = false)
        {
            if (!await CheckRegisteredAsync(BuildingKey(appId, appSecret)).ConfigureAwait(false))
            {
                throw new WeixinWorkException(UN_REGISTER_ALERT);
            }

            var jsApiTicketBag = await TryGetItemAsync(BuildingKey(appId, appSecret)).ConfigureAwait(false);
            //lock (jsApiTicketBag.Lock)
            {
                if (getNewTicket || jsApiTicketBag.ExpireTime <= SystemTime.Now)
                {
                    //已过期，重新获取
                    var jsApiTicketResult = await CommonApi.GetTicketAsync(jsApiTicketBag.CorpId, jsApiTicketBag.CorpSecret).ConfigureAwait(false);
                    jsApiTicketBag.JsApiTicketResult = jsApiTicketResult;
                    //jsApiTicketBag.JsApiTicketResult = CommonApi.GetTicket(jsApiTicketBag.AppId, jsApiTicketBag.AppSecret);
                    jsApiTicketBag.ExpireTime = ApiUtility.GetExpireTime(jsApiTicketBag.JsApiTicketResult.expires_in);
                    await UpdateAsync(jsApiTicketBag, null).ConfigureAwait(false);//更新到缓存
                }
            }
            return jsApiTicketBag.JsApiTicketResult;
        }
        #endregion
    }
}
