using Common;
using Common.system;

using Newtonsoft.Json.Linq;

using System;
using System.Collections.Specialized;
using System.Threading;

using XHWK.Model;

namespace XHWK.WKTool.DAL
{
    using system;

    /// <summary>
    ///     上传相关方法 创建人：赵耀 创建时间：2020年9月4日
    /// </summary>
    public class DalUpload
    {
        private readonly string _fileRequestAddress = App.uploadUrl;

        //private string schoolfileRequestAddress = APP.showImageUrl;
        /// <summary>
        ///     文件是否允许上传
        /// </summary>
        /// <param name="md5">
        ///     MD5
        /// </param>
        /// <param name="message">
        ///     错误消息
        /// </param>
        /// <returns>
        /// </returns>
        public bool IsAllowUploaded(string md5, out string message)
        {
            Exception ex = null;
            message = ""; //请求重试5次 共5秒
            for (int num = 0; num < 5; num++)
            {
                try
                {
                    string url = new Uri(new Uri(_fileRequestAddress), @"/chunkdb/isexist").AbsoluteUri;
                    ResultVo<ModelResourceAddTwo> resultObj = ZHttpUtil.PostSignle<ResultVo<ModelResourceAddTwo>>(
                        url,
                        @"md5=" + md5,
                        false,
                        contentType: @"application/x-www-form-urlencoded"
                    );
                    if (resultObj != null)
                    {
                        if (resultObj.code == 0)
                        {
                            App.ResourceAddTwo = resultObj.obj;
                            //已存在 不允许上传
                            return false;
                        }
                    }
                    return true;
                }
                catch (Exception e)
                {
                    message = "上传失败，无法访问到服务器：" + e.Message;
                    ex = e;
                    Thread.Sleep(1000);
                }
            }
            string errMessage = "【文件是否存在】(IsUploaded):请求失败。" + message;
            LogHelper.Logerror.Error(errMessage, ex);
            return false;
        }

        /// <summary>
        ///     上报文件合并指令
        /// </summary>
        /// <param name="savefolder">
        ///     保存文件位置 学校id/resource
        /// </param>
        /// <param name="fileCode">
        ///     文件唯一编号 Guid
        /// </param>
        /// <param name="message">
        ///     错误信息
        /// </param>
        /// <returns>
        /// </returns>
        public bool ReportFileMerge
        (
            string savefolder,
            string fileCode,
            out string message
        )
        {
            Exception ex = null;
            message = ""; //请求重试5次 共5秒
            for (int num = 0; num < 5; num++)
            {
                try
                {
                    string url = new Uri(new Uri(_fileRequestAddress), @"/chunkdb/mergechunk").AbsoluteUri;
                    ResultVo<ModelResourceAddTwo> resultObj = ZHttpUtil.PostSignle<ResultVo<ModelResourceAddTwo>>(
                        url,
                        @"savefolder=" + savefolder + "&identifier=" + fileCode,
                        false,
                        contentType: @"application/x-www-form-urlencoded"
                    );
                    if (resultObj != null)
                    {
                        if (resultObj.code == 0)
                        {
                            App.ResourceAddTwo = resultObj.obj;
                            return true;
                        }
                        message = resultObj.msg;
                    }
                    message = "请求失败，请重试！";
                    return false;
                }
                catch (Exception e)
                {
                    message = e.Message;
                    ex = e;
                    Thread.Sleep(1000);
                }
            }
            string errMessage = "【上报合并文件】(ReportFileMerge):请求失败。" + message;
            LogHelper.Logerror.Error(errMessage, ex);
            return false;
        }

        /// <summary>
        ///     上传视频
        /// </summary>
        /// <returns>
        /// </returns>
        public bool UploadVideo(string videoGuid, out string errMessage)
        {
            errMessage = "";
            try
            {
                ModelVideo videoInfo = null;
                foreach (ModelWkData vdata in App.WKDataList)
                {
                    if (vdata.VideoList == null)
                    {
                        continue;
                    }
                    foreach (ModelVideo videoinfo in vdata.VideoList)
                    {
                        if (videoinfo.FileGuid == videoGuid)
                        {
                            videoInfo = videoinfo;
                            break;
                        }
                    }
                    if (videoInfo != null)
                    {
                        break;
                    }
                }
                if (videoInfo == null)
                {
                    errMessage = "未找到课程！";
                    return false;
                }
                if (videoInfo.IsUpload)
                {
                    errMessage = "视频已上传";
                    return false;
                }
                return true;
            }
            catch (Exception ex)
            {
                LogHelper.Logerror.Error("【视频上传】（UploadVideo）视频上传失败：" + ex.Message, ex);
            }
            return false;
        }

        /// <summary>
        ///     上传视频
        /// </summary>
        /// <returns>
        /// </returns>
        public bool UploadVideoTwo(string videoGuid, out string errMessage)
        {
            errMessage = "";
            try
            {
                ModelVideo videoInfo = null;
                foreach (ModelWkData vdata in App.WKDataList)
                {
                    if (vdata.VideoList == null)
                    {
                        continue;
                    }
                    foreach (ModelVideo videoinfo in vdata.VideoList)
                    {
                        if (videoinfo.FileGuid == videoGuid)
                        {
                            videoInfo = videoinfo;
                            break;
                        }
                    }
                    if (videoInfo != null)
                    {
                        break;
                    }
                }
                if (videoInfo == null)
                {
                    errMessage = "未找到课程！";
                    return false;
                }
                string uploadUrl = new Uri(new Uri(_fileRequestAddress), "/chunkdb/upchunk").AbsoluteUri;
                if (videoInfo.IsUpload)
                {
                    errMessage = "视频已上传";
                    return false;
                }
                if (string.IsNullOrWhiteSpace(videoInfo.FileMD5))
                {
                    videoInfo.FileMD5 = AesHelper.AesEncrypt(FileToolsCommon.ReadBigFileStr(videoInfo.VideoPath, 1024));
                }

                //视频长度
                long filelen = FileToolsCommon.GetFileSize(videoInfo.VideoPath);
                //每片的长度
                double uploadSliceLenMb = double.Parse(FileToolsCommon.GetConfigValue("UploadSliceLen"));
                string fileName = FileToolsCommon.GetFileName(videoInfo.VideoPath);
                //是否续传
                //分块数为0时 从未上传过
                if (videoInfo.Block > 0)
                {
                    //是否已上传所有分块
                    if (videoInfo.Block > videoInfo.Uploaded)
                    {
                        //已上传，未上传完
                    }
                    else
                    {
                        //上传完,未合并

                        #region 合并文件

                        //合并文件
                        bool isres = ReportFileMerge(
                            App.UserInfo.cloudcode + "/" + App.UserInfo.Schoolid.ToString() + "/resource",
                            videoInfo.FileGuid,
                            out errMessage
                        );
                        if (isres)
                        {
                            return true;
                        }
                        return false;

                        #endregion 合并文件
                    }
                }
                else
                {
                    //是否允许上传
                    if (IsAllowUploaded(videoInfo.FileMD5, out errMessage))
                    {
                        if (videoInfo.SliceLen == 0)
                        {
                            videoInfo.SliceLen = (long)(uploadSliceLenMb * 1024 * 1024);
                            videoInfo.Block = (int)(filelen / videoInfo.SliceLen + (filelen % videoInfo.SliceLen > 0 ? 1 : 0));
                        }
                    }
                    else
                    {
                        //文件在服务器上已存在  空间是否存在未知 若增加空间是否存在判断在此处添加
                        videoInfo.Block = 1;
                        videoInfo.Uploaded = 1;
                        return true;
                    }
                }

                ////临时修改 没有断点续传，每次上传都重新上传。
                //VideoInfo.Uploaded = 0;
                {
                    //已上传长度
                    long len;

                    //分块
                    do
                    {
                        len = videoInfo.Uploaded * videoInfo.SliceLen;
                        //取指定长度的流
                        byte[] byteArray = FileToolsCommon.ReadBigFileSpecifyLength(
                            videoInfo.VideoPath,
                            len,
                            (int)videoInfo.SliceLen
                        );
                        //参数
                        NameValueCollection formFields = new NameValueCollection
                        {
                            { "identifier", videoInfo.FileGuid },
                            { "chunkNumber", (videoInfo.Uploaded + 1).ToString() },
                            { "filename", fileName },
                            { "totalchunk", videoInfo.Block.ToString() },
                            { "md5", videoInfo.FileMD5 }
                        };
                        JObject jo = ZHttpUtil.UploadFile(
                            uploadUrl,
                            byteArray,
                            fileName,
                            formFields
                        );
                        //0成功，1失败
                        if (jo["code"]?.ToString() != "0")
                        {
                            errMessage = jo["msg"]?.ToString();
                            return false;
                        }
                        videoInfo.Uploaded++;
                    }
                    while (len + videoInfo.SliceLen < filelen);

                    #region 合并文件

                    //合并文件
                    bool isres = ReportFileMerge(
                        App.UserInfo.cloudcode + "/" + App.UserInfo.Schoolid + "/resource",
                        videoInfo.FileGuid,
                        out errMessage
                    );
                    if (isres)
                    {
                        return true;
                    }
                    return false;

                    #endregion 合并文件
                }
            }
            catch (Exception ex)
            {
                LogHelper.Logerror.Error("【视频上传】（UploadVideo）视频上传失败：" + ex.Message, ex);
            }
            return false;
        }
    }
}