using DAL.Redis;
using System;
using System.Configuration;
using System.IO;
using System.Web;
using WX.CRM.Common;
using WX.CRM.DAL.Redis;
using WX.CRM.Model.DTO;

namespace WxService
{
    /// <summary>
    /// WxFileUpload 的摘要说明
    /// </summary>
    public class WxFileUpload : IHttpHandler
    {
        private static string _shareName;
        private static string _isShare;
        private readonly PubSub _sub = new PubSub();
        static WxFileUpload()
        {
            //用户名勿比指定共享服务器的IP或名称，否则会引起1312错误
            _isShare = Utility.GetSettingByKey("IsShare");
            if (!string.IsNullOrEmpty(_isShare))
            {
                _shareName = Utility.GetSettingByKey("NetUseShareName") ?? @"\\192.168.1.171\weixin";
                string user = Utility.GetSettingByKey("NetUseUser") ?? @"192.168.1.171\admin";
                string pwd = Utility.GetSettingByKey("NetUsePwd") ?? "read,./1";
                NetUseHelper.Build(_shareName, user, pwd, string.Empty);//不指定盘符，避免引起盘符被占用的错误
            }
        }
        public void ProcessRequest(HttpContext context)
        {
            //HttpContext.Current.Response.Write(Utility.ObjectToJson(new { result = true, message = "接收成功", url = "sys.png" }));
            //return;
            string msgSvrId = string.Empty;
            try
            {
                //LogHelper.Info("===调用成功====");
                context.Response.ContentType = "text/html";
                string fileName = context.Request.Params["fileName"];
                if (fileName.IndexOf("null.") > -1)
                {
                    HttpContext.Current.Response.Write(Utility.ObjectToJson(new { result = true, message = "文件为空", url = fileName }));
                }
                if (string.IsNullOrEmpty(fileName))
                    throw new Exception("fileName不能为空!");
                msgSvrId = context.Request.Params["msgSvrId"];
                if (string.IsNullOrEmpty(msgSvrId))
                    throw new Exception("msgSvrId不能为空!");
                //LogHelper.Info("fileName：" + fileName + ";msgSvrId:" + msgSvrId + ";context.Request.Files:" + context.Request.Files.Count);
                HttpPostedFile file = context.Request.Files[0];
                var yearMonth = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString();
                //string uploadFolder = (ConfigurationManager.AppSettings["uploadfile"] ?? "uploadfile") + "/" + yearMonth;
                var uploadFolder = string.Empty;
                if (string.IsNullOrEmpty(_isShare))
                {
                    uploadFolder = (ConfigurationManager.AppSettings["uploadfile"] ?? "uploadfile") + "/" + yearMonth;
                }
                else
                {
                    uploadFolder = _shareName + @"\WXFILE\uploadfile\" + yearMonth;
                }
                if (!Directory.Exists(uploadFolder))
                {
                    Directory.CreateDirectory(uploadFolder);
                }
                string filePath = Path.Combine(uploadFolder, fileName);
                file.SaveAs(filePath);
                PushRedis(msgSvrId, fileName);
                //HttpContext.Current.Response.Clear();
                HttpContext.Current.Response.Write(Utility.ObjectToJson(new { result = true, message = "接收成功", url = fileName }));
            }
            catch (Exception ex)
            {
                LogHelper.Error("msgSvrId:" + msgSvrId + ";错误：" + ex.ToString());
                //HttpContext.Current.Response.Clear();
                HttpContext.Current.Response.Write(Utility.ObjectToJson(new { result = false, message = "接收失败：" + ex.Message }));
            }
        }
        private void PushRedis(string msgSvrId, string fileName)
        {
            PushRedisAsync(msgSvrId, fileName);
        }
        private void PushRedisAsync(string msgSvrId, string fileName)
        {
            var redisKey = "wx:" + msgSvrId;
            var fileWebUrl = "/uploadfile/" + DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + "/" + fileName;

            var model = new wxfilepath
            {
                MsgSvrId = long.Parse(msgSvrId),
                FileName = redisKey,
                FileUrl = fileWebUrl,
                CTime = DateTime.Now
            };
            RedisString<string> rdb = new RedisString<string>(redisKey);
            TimeSpan span = new TimeSpan(30 * 6, 0, 0, 0, 0);//保留180天
            rdb.Set(fileWebUrl, span);

            PushRedisAndPublish(model, "filepath");
        }
        private void PushRedisAndPublish<T>(T model, string key)
        {
            //写入队列
            var result = new RedisList<T>().LeftPush(key, model);
            if (result > 0)
            {
                //发送订阅通知
                _sub.Publish("sub:" + key, "");
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}