using System.Text;
using YLErp.DBModels.Consts;
using YLErp.Helpers;
using YLErp.Office;

namespace YLErp.Modules.ApiModule.ExportModule
{
    /// <summary>
    /// 
    /// </summary>
    public class OtcTradeContractDocExportService : YLBaseService
    {
        public OtcTradeContractDocExportService(OptUserInfo userInfo) : base(userInfo)
        {

        }

        /// <summary>
        /// 生成开仓确认书批量导出文件
        /// </summary>
        public byte[] GetZipFileOfOpenDocs(OtcTradeContractOpenDocExportRequest req, out TradeContractDocFileExportInfo[] exportInfos)
        {
            if (req is null)
            {
                throw new ArgumentNullException(nameof(req));
            }

            int[] clientIds = null;

            if (req.ClientNumbers != null && req.ClientNumbers.Any())
            {
                clientIds = DataCacheProvider.GetClientDataSource().AsQueryable()
                        .Where(n => req.ClientNumbers.Contains(n.Number))
                        .Select(n => n.id).ToArray();
            }

            var tdPredicate = PredicateBuilder.Create<trade>(td => td.ValidState != ConsGlobal.InValid && td.TradeDate >= req.OpenDateRangeStart
                    && ("结构化交易" != td.TradeType || td.IsGroup == 1) && td.IsGroup != 2);

            if (req.TradeNumbers != null && req.TradeNumbers.Any())
            {
                tdPredicate = tdPredicate.And(td => req.TradeNumbers.Contains(td.TradeNumber));
            }

            if (req.TradeStatus != null && req.TradeStatus.Any())
            {
                tdPredicate = tdPredicate.And(td => req.TradeStatus.Contains(td.TradeStatus));
            }

            if (clientIds != null)
            {
                tdPredicate = tdPredicate.And(td => clientIds.Contains(td.ClientId));
            }

            if (req.OpenDateRangeEnd.HasValue)
            {
                tdPredicate = tdPredicate.And(td => td.TradeDate <= req.OpenDateRangeEnd.Value);
            }

            var rPredicate = PredicateBuilder.Create<trade_contract_r>(r => r.IsValid && (r.Type == ContractTypeEnum.Trade || r.Type == ContractTypeEnum.AdditionalTrade));

            var query = from td in DbContext.trade.Where(tdPredicate)
                        join r in DbContext.trade_contract_r.Where(rPredicate) on td.id equals r.TradeId into r_t
                        from r in r_t.DefaultIfEmpty()
                        join d in DbContext.trade_contract_document on r.ContractCode equals d.Code into d_t
                        from d in d_t.DefaultIfEmpty()
                        select new TradeContractDocFileExportInfo
                        {
                            TradeNumber = td.TradeNumber,
                            TradeStatus = td.TradeStatus,
                            ValueDate = td.TradeDate,

                            ContractCode = r.ContractCode,

                            FilePath = d.Paths,
                            FileName = d.FileName,
                            StampDocumentFileName = d.StampDocumentFileName
                        };

            //DbContext.SetDebugLog();

            exportInfos = query.ToArray();

            var zipEntryList = new List<MyZipEntry>(exportInfos.Length + 1);

            foreach (var info in exportInfos)
            {
                if (PS.Config.ErpElement.ConfirmBookStampStatus
                    && !string.IsNullOrWhiteSpace(info.StampDocumentFileName))
                {
                    var filePath = TradeContractHelper.GetPhysicalPath(info.StampDocumentFileName);

                    if (File.Exists(filePath))
                    {
                        var entry = MyZipEntry.Create(filePath);

                        zipEntryList.Add(entry);

                        info.FileName = entry.Name;
                    }
                    else
                    {
                        info.ErrorMsg = "已用印交易确认书文件不存在";
                    }
                }
                else
                {
                    var filePath = TradeContractHelper.GetAbsolutePath(info.FilePath, info.FileName);

                    if (File.Exists(filePath))
                    {
                        var entry = MyZipEntry.Create(filePath);

                        zipEntryList.Add(entry);

                        info.FileName = entry.Name;
                    }
                    else
                    {
                        info.ErrorMsg = "交易确认书文件不存在";
                    }
                }
            }

            zipEntryList.Add(new MyZipEntry
            {
                Name = "info.txt",
                Buffer = Encoding.UTF8.GetBytes(JsonBeautify.Serialize(exportInfos))
            });

            return ZipFileHelper.ZipFiles(zipEntryList);
        }

        /// <summary>
        /// 生成了结确认书批量导出文件
        /// </summary>
        public byte[] GetZipFileOfCloseDocs(OtcTradeContractCloseDocExportRequest req, out TradeContractDocFileExportInfo[] exportInfos)
        {
            if (req is null)
            {
                throw new ArgumentNullException(nameof(req));
            }

            int[] clientIds = null;

            if (req.ClientNumbers != null && req.ClientNumbers.Any())
            {
                clientIds = DataCacheProvider.GetClientDataSource().AsQueryable()
                        .Where(n => req.ClientNumbers.Contains(n.Number))
                        .Select(n => n.id).ToArray();
            }

            var tdPredicate = PredicateBuilder.Create<trade>(td => td.ValidState != ConsGlobal.InValid && ("结构化交易" != td.TradeType || td.IsGroup == 1) && td.IsGroup != 2);

            if (req.TradeNumbers != null && req.TradeNumbers.Any())
            {
                tdPredicate = tdPredicate.And(td => req.TradeNumbers.Contains(td.TradeNumber));
            }

            if (clientIds != null)
            {
                tdPredicate = tdPredicate.And(td => clientIds.Contains(td.ClientId));
            }

            var actionList = new string[] { ClientCashInCashOut.系统操作_行权费, ClientCashInCashOut.系统操作_平仓费, ClientCashInCashOut.系统操作_互换, ClientCashInCashOut.系统操作_票息 };
            var tcPredicate = PredicateBuilder.Create<trade_cash>(tc => actionList.Contains(tc.Action) && tc.ValidState != ConsGlobal.InValid && !tc.IsDeleted && tc.ValueDate >= req.CloseDateRangeStart);

            if (req.CloseDateRangeEnd.HasValue)
            {
                tcPredicate = tcPredicate.And(tc => tc.ValueDate <= req.CloseDateRangeEnd.Value);
            }

            var rPredicate = PredicateBuilder.Create<trade_contract_r>(r => r.IsValid && (r.Type == ContractTypeEnum.Clearing || r.Type == ContractTypeEnum.UnWind));

            var query = from tc in DbContext.trade_cash.Where(tcPredicate)
                        join td in DbContext.trade.Where(tdPredicate) on tc.TradeId equals td.id
                        join r in DbContext.trade_contract_r.Where(rPredicate) on new { tc.TradeId, tcId = tc.id } equals new { r.TradeId, tcId = r.TradeCashId.Value } into r_t
                        from r in r_t.DefaultIfEmpty()
                        join doc in DbContext.trade_contract_document on new { Code = r.ContractCode, r.Type } equals new { doc.Code, doc.Type } into doc_t
                        from doc in doc_t.DefaultIfEmpty()
                        select new TradeContractDocFileExportInfo
                        {
                            ValueDate = tc.ValueDate,

                            TradeNumber = td.TradeNumber,
                            TradeStatus = td.TradeStatus,

                            ContractCode = r.ContractCode,

                            FilePath = doc.Paths,
                            FileName = doc.FileName,
                            StampDocumentFileName = null
                        };

            //DbContext.SetDebugLog();

            exportInfos = query.ToArray();

            var zipEntryList = new List<MyZipEntry>(exportInfos.Length + 1);

            foreach (var info in exportInfos)
            {
                var path = info.FilePath;

                if (string.IsNullOrWhiteSpace(path))
                {
                    info.ErrorMsg = "确认书文件不存在";
                }
                else
                {
                    var filePath = GetFileName(path, ".pdf");

                    if (string.IsNullOrEmpty(path))
                    {
                        filePath = GetFileName(path, ".doc");
                    }

                    if (File.Exists(filePath))
                    {
                        var entry = MyZipEntry.Create(filePath);

                        zipEntryList.Add(entry);

                        info.FileName = entry.Name;
                    }
                    else
                    {
                        info.ErrorMsg = "确认书文件不存在";
                    }
                }

            }

            zipEntryList.Add(new MyZipEntry
            {
                Name = "info.txt",
                Buffer = Encoding.UTF8.GetBytes(JsonBeautify.Serialize(exportInfos))
            });

            return ZipFileHelper.ZipFiles(zipEntryList);
        }

        private static string GetFileName(string baseName, string sufferFix)
        {
            var fName = Path.ChangeExtension(baseName, sufferFix);

            if (!string.IsNullOrWhiteSpace(fName) && (fName[0] != '/' || fName[0] != '\\'))
            {
                fName = fName.Insert(0, "/");
            }

            fName = OtcAppContext.MapPath(fName);

            if (!File.Exists(fName))
            {
                fName += "x";  //解决数据库中存的后缀名是doc但实际文件是docx的问题;
            }

            return File.Exists(fName) ? fName : null;
        }
    }

    /// <summary>
    /// 交易确认书文档导出信息
    /// </summary>
    public class TradeContractDocFileExportInfo
    {
        /// <summary>
        /// 交易编号
        /// </summary>
        public string TradeNumber { get; set; }

        /// <summary>
        /// 交易当前状态
        /// </summary>
        public string TradeStatus { get; set; }

        /// <summary>
        /// 开平仓日期
        /// </summary>
        public DateTime? ValueDate { get; set; }

        /// <summary>
        /// 合约编号
        /// </summary>
        public string ContractCode { get; set; }

        /// <summary>
        /// 文件名称
        /// </summary>
        public string FileName { get; set; }

        /// <summary>
        /// 错误信息
        /// </summary>
        public string ErrorMsg { get; set; }

        internal string FilePath { get; set; }

        internal string StampDocumentFileName { get; set; }

        public override string ToString()
        {
            return $"{TradeNumber}-{ErrorMsg}";
        }
    }
}