using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.IO;
using System.Collections.Specialized;
using System.Threading;
using System.Collections.Concurrent;
using System.Diagnostics;

using SqlSugar;
using Newtonsoft.Json;
using HXX.Scanner.Database;
using HXX.Scanner.Common;
using HXX.Scanner.Biz.Socket;

namespace HXX.Scanner.Biz
{
    /// <summary>
    /// 文件上传类
    /// </summary>
    public class upf
    {
        /// <summary>
        /// 文件基本信息，来自数据库
        /// </summary>
        public tb_file_info entity { get; set; }
        /// <summary>
        /// 文件当初状态，判断是否允许做上传的动作
        /// </summary>
        public ResponseEntity<response_http_uploadImg2> result { get; set; }
        /// <summary>
        /// seqNumber
        /// </summary>
        //public int seqNumber { get; set; }
        /// <summary>
        /// upload type
        /// </summary>
        public upload_type_enum upload_type { get; set; }
    }

    /// <summary>
    /// 文件上传业务
    /// </summary>
    public class http_manager
    {
        public http_manager()
        {
            ////测试状态禁止上传
            //if (config_environment.scan_type == ScanType.Test_Panel_1_Side || config_environment.scan_type == ScanType.Test_Panel_2_Sides)
            //{
            //    return;
            //}
            //else
            //{
            //    url_upload = config_environment.web_parameter.uploadUrl + config_manager.Get("uploadFileUrl");
            //}

            url_upload = config_environment.web_parameter.uploadUrl;
        }

        /// <summary>
        /// url
        /// </summary>
        private string url_upload;
        /// <summary>
        /// 上传失败的处理方法
        /// </summary>
        public static del_on_net_broken on_net_broken;
        /// <summary>
        /// 上传结果通知
        /// </summary>
        public static del_http_notify on_http_notify;
        /// <summary>
        /// 上传结果通知2
        /// </summary>
        public static del_http_notify2 on_http_notify2;
        /// <summary>
        /// 文件上传队列
        /// </summary>
        private static ConcurrentQueue<upf> queue = new ConcurrentQueue<upf>();

        //public void Upload(tb_file_info _entity, ResponseEntity<response_http_uploadImg> _result)
        //{
        //    var e_q = new upf() { entity = _entity, result = _result, seqNumber = 0 };

        //    queue.Enqueue(e_q);
        //}

        /// <summary>
        /// 检查队列是否为空
        /// </summary>
        /// <returns></returns>
        public static bool check_is_queue_empty()
        {
            //return false;
            return queue.IsEmpty;
        }

        /// <summary>
        /// 进上传队列
        /// </summary>
        /// <param name="e_q"></param>
        public void Upload(upf e_q)
        {
            queue.Enqueue(e_q);
        }

        //public static void start_http_upload()
        //{
        //    Task.Run(() =>
        //    {
        //        while (true)
        //        {
        //            if (!queue.IsEmpty)
        //            {
        //                queue.TryDequeue(out upf eq);

        //                if (eq != null)
        //                {
        //                    new http_manager().Upload_1(eq.entity, eq.result, eq.seqNumber);
        //                }
        //            }
        //            else
        //            {
        //                Thread.Sleep(100);
        //            }
        //        }
        //    });
        //}

        /// <summary>
        /// 队列上传线程
        /// </summary>
        public static void start_http_upload()
        {
            Task.Run(() =>
            {
                while (true)
                {
                    if (!queue.IsEmpty)
                    {
                        //队列不空，取一个待上传实体
                        queue.TryDequeue(out upf eq);

                        if (eq != null)
                        {
                            //真实上传业务
                            //开始计时
                            Stopwatch sw = new Stopwatch();
                            sw.Start();

                            while (true)
                            {
                                //判断图片转换和保存数据库操作是否完成
                                if ((eq.upload_type == upload_type_enum.normal && eq.result != null && eq.result.Status == 1)
                                || eq.upload_type == upload_type_enum.reUpload)
                                {
                                    //告诉网页端开始上传
                                    //if (eq.entity.fi_zipId == 1)
                                    //{
                                    //    var response = new response_uploading() { batchNumber = eq.entity.fi_batchSeq, subjectCode = eq.entity.fi_subjectCode };
                                    //    on_http_notify2(JsonConvert.SerializeObject(response));
                                    //}

                                    //http上传
                                    eq.result = new http_manager().Upload_1(eq);

                                    break;
                                }
                                else
                                {
                                    //数据操作超时
                                    if (sw.ElapsedMilliseconds > 10000)
                                    {
                                        eq.result.Status = 0;
                                        eq.result.Message = "保存图片超时";
                                        sw.Stop();
                                        break;
                                    }
                                    else
                                    {
                                        Thread.Sleep(100);
                                    }
                                }
                            }
                            //真实上传业务

                            //test
                            //if (testflag)
                            //{
                            //    eq.result.Status = 1;
                            //}
                            //else
                            //{
                            //    eq.result.Status = 0;
                            //}

                            //testflag = !testflag;
                            //test

                            AfterUpload(eq);
                        }
                    }
                    else
                    {
                        Thread.Sleep(100);
                    }
                }
            });
        }

        static bool testflag = true;

        private static void AfterUpload(upf eq)
        {
            //Thread.Sleep(1000);

            try
            {
                if (eq.result.Status == 1 || eq.result.Status == 200)
                {
                    entity_server_upload server_response = null;

                    try
                    {
                        server_response = JsonConvert.DeserializeObject<entity_server_upload>(eq.result.Data.data_string);
                    }
                    catch (Exception ee)
                    {
                        LogManager.WriteLog(ee.Message);
                    }

                    var db_list = new biz_db().get_by_sn(eq.entity.fi_SN);                    

                    foreach (var entity in db_list)
                    {
                        var fileName = Path.GetFileName(entity.fi_full_name);
                        var path = Path.GetDirectoryName(entity.fi_full_name);
                        path = path.Replace("ready", "complete");
                        fileName = Path.Combine(path, fileName);

                        try
                        {
                            if (File.Exists(fileName))
                            {
                                File.Delete(fileName);
                            }

                            //把上传成功的文件，从ready移动到complete中                        
                            File.Move(entity.fi_full_name, fileName);
                        }
                        catch (Exception e1)
                        {
                            LogManager.WriteLog(e1.Message);
                            response_error error = new response_error(e1.Message);
                            on_http_notify2(JsonConvert.SerializeObject(error));
                        }

                        var url = get_url_from_server_response(entity, server_response);

                        //上传成功，更新数据库标志
                        new biz_db().update_upload_flag_by_id(entity.fi_id, 1, url);
                        new biz_db().update_file_name(entity.fi_id, fileName);
                    }
                }
                else if (eq.result.Status == -1)
                {
                    return;
                }
                else
                {
                    new biz_db().update_upload_flag_by_SN(eq.entity.fi_SN.Value, -1);
                }

                //socket发送结果
                if (eq.upload_type == upload_type_enum.normal)
                {
                    notify_nomral(eq);
                }
                else
                {
                    notify_reUpload(eq);
                }
            }
            catch (Exception ee)
            {
                LogManager.WriteLog(eq.result.Message);

                response_error error = new response_error(ee.Message);
                on_http_notify2(JsonConvert.SerializeObject(error));
            }
        }

        private static string get_url_from_server_response(tb_file_info db_entity, entity_server_upload server_response)
        {
            string result = string.Empty;

            try
            {
                var data = server_response.data.Where(x => x.Contains("_" + db_entity.fi_zipId + ".")).FirstOrDefault();

                if (!string.IsNullOrEmpty(data))
                {
                    result = data;
                }
            }
            catch (Exception ee)
            {
                LogManager.WriteLog(ee.Message);
            }

            return result;
        }

        private static void notify_nomral(upf eq)
        {
            var entity = eq.entity;
            var qty = new biz_db().get_upload_count_by_batchNumber(eq.entity.fi_batchSeq, eq.entity.fi_subjectCode);
            var response1 = new response_uploadNumber() { number = qty.qty_success, batchNumber = eq.entity.fi_batchSeq };
            //var response2 = new response_fainNumber() { number = qty.qty_fail, batchNumber = eq.entity.fi_batchSeq };
            on_http_notify(eq);
            on_http_notify2(JsonConvert.SerializeObject(response1));
            //on_http_notify2(JsonConvert.SerializeObject(response2));

            //if (queue.IsEmpty)
            //{
            //    var response_finish = new response_uploadFinish() { subjectCode = entity.fi_subjectCode, batchNumber = entity.fi_batchSeq };
            //    var upload_count = new biz_db().get_upload_count_by_batchNumber(entity.fi_batchSeq, entity.fi_subjectCode);

            //    response_finish.scanNumber = new biz_db().get_count_by_batchNumber(entity.fi_batchSeq, entity.fi_subjectCode);
            //    response_finish.uploadNumber = upload_count.qty_success;
            //    response_finish.failedNumber = upload_count.qty_fail;

            //    on_http_notify2(JsonConvert.SerializeObject(response_finish));
            //}
        }

        public static void notify_scan_finish()
        {
            Task.Run(() =>
            {
                if (config_environment.scan_type2 == ScanType.Formal)
                {
                    while (!queue.IsEmpty)
                    {
                        Thread.Sleep(100);
                    }

                    var response_finish = new response_uploadFinish();

                    try
                    {
                        response_finish.subjectCode = config_environment.web_parameter.subjectCode;
                        response_finish.batchNumber = config_environment.web_parameter.batchNumber;

                        var upload_count = new biz_db().get_upload_count_by_batchNumber(config_environment.web_parameter.batchNumber, config_environment.web_parameter.subjectCode);

                        response_finish.scanNumber = new biz_db().get_count_by_batchNumber(config_environment.web_parameter.batchNumber, config_environment.web_parameter.subjectCode);
                        response_finish.uploadNumber = upload_count.qty_success;
                        response_finish.failedNumber = upload_count.qty_fail;

                    }
                    catch (Exception ee)
                    {
                        response_finish.code = 500;
                        response_finish.msg = ee.Message;
                        LogManager.WriteLog(ee.Message);
                    }

                    on_http_notify2(JsonConvert.SerializeObject(response_finish));
                }
            });
        }

        private static void notify_reUpload(upf eq)
        {
            var response1 = new response_reUpload_single_finish();
            response1.fileIndex = get_ids_whenUpload(eq.entity.fi_SN);
            response1.batchNumber = eq.entity.fi_batchSeq;
            response1.subjectCode = eq.entity.fi_subjectCode;

            if (eq.result.Status == 1 || eq.result.Status == -1 || eq.result.Status == 200)
            {
                response1.uploadState = 0;
            }
            else
            {
                response1.uploadState = 1;
            }

            on_http_notify2(JsonConvert.SerializeObject(response1));

            if (queue.IsEmpty)
            {
                var response_finish = new response_reUpload_all_finish() { subjectCode = eq.entity.fi_subjectCode, batchNumber = eq.entity.fi_batchSeq, number = biz_reUpload.current_list.Count(x => x.fi_side == 1) };

                string id_list = string.Empty;

                foreach(var record in biz_reUpload.current_list)
                {
                    id_list += "," + record.fi_id;
                }

                if (id_list.Length > 0)
                {
                    id_list = id_list.Substring(1);
                }

                response_finish.failedNumber = new biz_db().get_not_upload_status(id_list);

                on_http_notify(eq);
                on_http_notify2(JsonConvert.SerializeObject(response_finish));
            }
        }

        /// <summary>
        /// 单任务上传
        /// </summary>
        /// <param name="entity"></param>
        /// <param name="result"></param>
        /// <param name="seqNumber"></param>
        /// <returns></returns>
        //private ResponseEntity<response_http_uploadImg2> Upload_1(tb_file_info entity, ResponseEntity<response_http_uploadImg2> result, int seqNumber)
        private ResponseEntity<response_http_uploadImg2> Upload_1(upf eq)
        {
            if (eq.entity != null)
            {
                if (eq.upload_type == upload_type_enum.normal && eq.result.Status == 1)
                {
                    try
                    {
                        //根据实体获取json
                        var content = get_json(eq.entity);
                        eq.result = content.Item1;

                        if (eq.result.Status == 1)
                        {
                            eq.result = upload_try(eq, eq.result.Message, content.Item2);
                        }
                        else if (eq.result.Status == -1)
                        {
                            //双面的第一面，等待第二面到来再传
                            return eq.result; 
                        }
                    }
                    catch (Exception ee)
                    {
                        eq.result.Status = 0;
                        eq.result.Message = ee.Message;
                    }

                    //biz_scanFinish.Work(eq.entity, eq.result);
                }
                else if (eq.upload_type == upload_type_enum.reUpload)
                {
                    try
                    {
                        //根据实体获取json
                        var content = get_json(eq.entity);
                        eq.result = content.Item1;

                        if (eq.result.Status == 1)
                        {
                            eq.result = upload_try(eq, eq.result.Message, content.Item2);
                        }
                        else if (eq.result.Status == -1)
                        {
                            //双面的第一面，等待第二面到来再传
                            return eq.result;
                        }
                        else
                        {
                            var response3 = new response_reUpload_error()
                            {
                                batchNumber = eq.entity.fi_batchSeq,
                                subjectCode = eq.entity.fi_subjectCode,
                                code = 500,
                                msg = eq.result.Message,
                            };

                            on_http_notify2(JsonConvert.SerializeObject(response3));
                        }
                    }
                    catch (Exception ee)
                    {
                        eq.result.Status = 0;
                        eq.result.Message = ee.Message;
                        LogManager.WriteLog(ee.Message);
                    }
                }
            }

            return eq.result;
        }

        private string get_seqNumbers_whenUpload(long? sn)
        {
            string result = "";

            var list = new biz_db().get_by_sn(sn);

            if (list[0].fi_schema != list.Count)
            {
                throw new Exception("Paper Schema does not match Paper Count");
            }

            foreach(var record in list)
            {
                result += "," + record.fi_zipId;
            }

            if (result.Length > 0)
            {
                result = result.Substring(1);
            }

            return result;
        }

        private static string get_ids_whenUpload(long? sn)
        {
            string result = "";

            var list = new biz_db().get_by_sn(sn);

            foreach (var record in list)
            {
                result += "," + record.fi_id;
            }

            if (result.Length > 0)
            {
                result = result.Substring(1);
            }

            return result;
        }

        /// <summary>
        /// 3次上传尝试
        /// </summary>
        /// <param name="json"></param>
        /// <param name="file_list"></param>
        /// <returns></returns>
        private ResponseEntity<response_http_uploadImg2> upload_try(upf eq, string json, List<string> file_list)
        {
            var result = new ResponseEntity<response_http_uploadImg2>();
            int try_count = 0;

            //////////
            var entity = JsonConvert.DeserializeObject<request_http_uploadImg>(json);
            /////////

            NameValueCollection param_list = new NameValueCollection();

            //new
            param_list.Add("seqNumbers", get_seqNumbers_whenUpload(eq.entity.fi_SN));
            param_list.Add("paperSchema", eq.entity.fi_schema.ToString());
            //new
            //old
            param_list.Add("seqNumber", eq.entity.fi_zipId.ToString());
            param_list.Add("schema", eq.entity.fi_schema.ToString());
            //old
            param_list.Add("jsonParam", config_environment.web_parameter.jsonParam);

            while (try_count < 3)
            {
                try_count++;

                result = upload_try2(param_list, file_list);

                if (result.Status == 1)
                {
                    break;
                }
                else
                {
                    Thread.Sleep(100);
                }
            }

            return result;
        }

        /// <summary>
        /// 具体上传逻辑
        /// </summary>
        /// <param name="param_list"></param>
        /// <param name="file_list"></param>
        /// <returns></returns>
        private ResponseEntity<response_http_uploadImg2> upload_try2(NameValueCollection param_list, List<string> file_list)
        {
            ResponseEntity<response_http_uploadImg2> result = new ResponseEntity<response_http_uploadImg2>();

            try
            {
                var response_string = http_helper.HttpUploadFile2(url_upload, file_list, "files", "multipart/form-data", config_environment.web_parameter.token, param_list);

                try
                {
                    result.Data = JsonConvert.DeserializeObject<response_http_uploadImg2>(response_string);                    
                }
                catch (Exception ee2)
                {
                    if (ee2.Message.StartsWith("Unexpected character"))
                    {
                        result.Data = new response_http_uploadImg2() { code = 200 };
                    }
                    else
                    {
                        throw ee2;
                    }
                }

                result.Data.data_string = response_string;

                if (result.Data.code == 200)
                {
                    result.Status = 1;
                    result.Message = "ok";
                }
                else
                {
                    result.Status = result.Data.code;
                    result.Message = result.Data.msg;

                    LogManager.WriteLog(response_string);
                }
            }
            catch (Exception ee)
            {
                LogManager.WriteLog(ee);

                if (ee.Message.Contains("未能解析此远程名称"))
                {
                    on_net_broken();
                }
                else if (ee.Message.Contains("超时") || ee.Message.Contains("timeout"))
                {
                    result.Status = -2;
                    result.Message = "http上传超时";
                }
                else
                {
                    result.Status = 0;
                    result.Message = "http上传文件失败：" + ee.Message;
                }
            }

            return result;
        }

        /// <summary>
        /// 根据实体获取json
        /// </summary>
        /// <param name="entity"></param>
        /// <param name="seqNumber"></param>
        /// <returns></returns>
        private Tuple<ResponseEntity<response_http_uploadImg2>, List<string>> get_json(tb_file_info entity)
        {
            ResponseEntity<response_http_uploadImg2> result_entity = new ResponseEntity<response_http_uploadImg2>();
            List<string> result_path = new List<string>();

            try
            {
                List<tb_file_info> file_list = new List<tb_file_info>();

                //单面
                if (entity.fi_schema == 1)
                {
                    file_list.Add(entity);
                }
                //双面
                else
                {
                    file_list = new biz_db().get_by_sn(entity.fi_SN);

                    if (file_list.Count < 2)
                    {
                        var ss = entity.fi_side;
                        var ss2 = entity.fi_full_name;
                        result_entity.Status = -1;
                        result_entity.Message = "第1面，等待第2面再传";

                        return new Tuple<ResponseEntity<response_http_uploadImg2>, List<string>>(result_entity, result_path);
                    }

                    if (file_list.Count(x => x.fi_upload_flag == 1) == file_list.Count)
                    {
                        result_entity.Status = -1;
                        result_entity.Message = "已全部上传";

                        return new Tuple<ResponseEntity<response_http_uploadImg2>, List<string>>(result_entity, result_path);
                    }
                }

                if (file_list.Count == 1 || file_list.Count == 2)
                {
                    bool flag = true;

                    foreach (var f in file_list)
                    {
                        if (!File.Exists(f.fi_full_name))
                        {
                            flag = false;
                            break;
                        }
                    }

                    if (flag)
                    {
                        var req = new request_http_uploadImg();

                        req.token = config_environment.web_parameter.token;
                        req.fileCount = file_list.Count;
                        req.isTest = file_list[0].fi_isTest;
                        req.fileMetaInfo = new List<subRequest_http_uploadImg>();

                        req.zipId = file_list[0].fi_zipId;
                        req.examId = file_list[0].fi_examId;
                        req.examPaperId = file_list[0].fi_examPaperId;
                        //req.seqNumber = file_list[0].fi_schema;
                        //req.seqNumber = file_manager.get_seqNumber();
                        //req.seqNumber = seqNumber;
                        req.schoolId = config_environment.web_parameter.schoolId;
                        req.accountId = file_list[0].fi_accountId.ToString();
                        //req.completedAmount = new biz_db().get_count_by_seq(config_environment.web_parameter.batchNumber, req.zipId);
                        req.completedAmount = new biz_db().get_count_by_seq(file_list[0].fi_batchSeq, req.zipId, config_environment.web_parameter.paperSchema);

                        //req.batchNumber = file_list[0].fi_batchNumber;
                        req.batchNumber = entity.fi_batchSeq;
                        req.schema = entity.fi_schema == null ? "1" : entity.fi_schema.ToString();

                        foreach (var f in file_list)
                        {
                            var sub = new subRequest_http_uploadImg();

                            sub.fileName = f.fi_name;

                            req.fileMetaInfo.Add(sub);

                            result_path.Add(f.fi_full_name);
                        }

                        result_entity.Status = 1;
                        result_entity.Message = JsonConvert.SerializeObject(req);
                    }
                    else
                    {
                        result_entity.Status = 0;
                        result_entity.Message = "未能找到用于上传的文件";
                    }
                }
                else
                {
                    result_entity.Status = 0;
                    result_entity.Message = "db错误，未能找到用于上传的文件记录";
                }
            }
            catch (Exception ee)
            {
                LogManager.WriteLog(ee);

                result_entity.Status = 0;
                result_entity.Message = ee.Message;
            }

            return new Tuple<ResponseEntity<response_http_uploadImg2>, List<string>>(result_entity, result_path);
        }
    }
}