using System.Text;
using YLErp.Commons;
using YLErp.Helpers;

namespace YLErp.Modules.SalesModule
{
    public class SalesmenImportService : YLBaseService
    {
        /// <summary>
        /// 销售员信息导入
        /// </summary>
        public SalesmenImportService(OptUserInfo userInfo) : base(userInfo)
        {

        }

        public HandleResult UploadSalesmenCsv(string path)
        {
            var resultList = new List<string>();
            var originaltype = EncodingType.GetType(path, resultList);
            ChangeFileEncoding(path, originaltype);

            string Name;
            string Department;
            string Mail;
            string Telephone;
            string Mobile;
            int Status = 0;
            Salesman salesman;

            int rowNum = 0;
            var salesmen = new List<Salesman>();

            using (var fs = new FileStream(path, FileMode.Open, FileAccess.Read))
            {
                using (var sr = new StreamReader(fs, Encoding.UTF8))
                {
                    while (!sr.EndOfStream)
                    {
                        string line = sr.ReadLine();
                        if (rowNum == 0)
                        {
                            rowNum++;
                            continue;
                        }
                        rowNum++;

                        if (line == "")
                        {
                            continue;
                        }

                        string[] res = line.Split(new char[] { ',' }, StringSplitOptions.None);
                        if (res != null && res.Length > 0)
                        {
                            var isAllEmpty = true;
                            for (int i = 0; i < res.Length; i++)
                            {
                                if (!string.IsNullOrWhiteSpace(res[i]))
                                {
                                    isAllEmpty = false;
                                }
                            }

                            if (isAllEmpty)
                            {
                                continue;
                            }

                            if (res.Length < 19)
                            {
                                return "导入文件列缺失！请检查后再导入！";
                            }
                        }

                        Name = res[0];
                        Department = res[1];
                        Mail = res[2];
                        Telephone = res[3];
                        Mobile = res[4];

                        if (!string.IsNullOrEmpty(res[5]))
                        {
                            if (res[5] == "正常")
                            {
                                Status = 0;
                            }
                            else if (res[5] == "禁用")
                            {
                                Status = 1;
                            }
                            else
                            {
                                return "第" + rowNum + "行状态填写有错，导入失败";
                            }
                        }
                        else
                        {
                            return "第" + rowNum + "行状态未填写，导入失败";
                        }

                        if (string.IsNullOrEmpty(Name) || DbContext.salesmen.Any(a => a.Name.Equals(Name)))
                        {
                            return "第" + rowNum + "行姓名" + Name + "未填写或已存在，导入失败";
                        }

                        if (!string.IsNullOrEmpty(Department))
                        {
                            return "第" + rowNum + "行未填写，导入失败";
                        }

                        salesman = new Salesman
                        {
                            Name = Name,
                            Department = Department,
                            Mail = Mail,
                            Telephone = Telephone,
                            Mobile = Mobile,
                            Status = Status
                        };

                        DbContext.salesmen.Add(salesman);

                        salesmen.Add(salesman);
                    }
                }

                if (salesmen == null || salesmen.Count == 0)
                {
                    return "请确保上传文件数据不为空，导入失败";
                }
                DbContext.SaveChanges();
            }
            return HandleResult.Success;
        }

        private void ChangeFileEncoding(string filename, Encoding encoding)
        {
            var fs = new FileStream(filename, System.IO.FileMode.Open, System.IO.FileAccess.Read);
            byte[] flieByte = new byte[fs.Length];
            fs.Read(flieByte, 0, flieByte.Length);
            fs.Close();

            StreamWriter docWriter;
            var ec = Encoding.GetEncoding("UTF-8");
            docWriter = new StreamWriter(filename, false, ec);
            docWriter.Write(encoding.GetString(flieByte));
            docWriter.Close();
        }

        public HandleResult UploadSalesmenExcel(Stream stream, int userId, string userName)
        {
            var salesPeople = new ExcelHelper().ExcelToDataTable(stream, null, true);
            string Name = "";
            string Department = "";
            string Mail = "";
            string Telephone = "";
            string Mobile = "";
            int Status = 0;

            Salesman saleman;
            List<Salesman> salesmen = new List<Salesman>();

            var rowNum = 0;
            for (int i = 0; i < salesPeople.Rows.Count; i++)
            {
                rowNum = i + 2;
                for (int j = 0; j < salesPeople.Columns.Count; j++)
                {
                    switch (salesPeople.Columns[j].ColumnName)
                    {
                        case "姓名":
                            Name = salesPeople.Rows[i][j].ToString();
                            break;
                        case "部门":
                            Department = salesPeople.Rows[i][j].ToString();
                            break;
                        case "邮箱":
                            Mail = salesPeople.Rows[i][j].ToString();
                            break;
                        case "座机":
                            Telephone = salesPeople.Rows[i][j].ToString();
                            break;
                        case "手机":
                            Mobile = salesPeople.Rows[i][j].ToString();
                            break;
                        case "状态":
                            if (!int.TryParse(salesPeople.Rows[i][j].ToString(), out Status))
                            {
                                if (salesPeople.Rows[i][j].ToString() == "正常")
                                {
                                    Status = 0;
                                }
                                else if (salesPeople.Rows[i][j].ToString() == "禁用")
                                {
                                    Status = 1;
                                }
                                else
                                {
                                    return "第" + rowNum + "行状态未填写或有错，导入失败";
                                }
                            }
                            break;
                        default:
                            break;
                    }
                }

                if (string.IsNullOrWhiteSpace(Name) || DbContext.salesmen.Any(a => a.Name.Equals(Name)))
                {
                    return "第" + rowNum + "行姓名" + Name + "未填写或已存在，导入失败";
                }

                if (string.IsNullOrWhiteSpace(Department))
                {
                    return "第" + rowNum + "行未填写，导入失败";
                }

                saleman = new Salesman
                {
                    Name = Name,
                    Department = Department,
                    Mail = Mail,
                    Telephone = Telephone,
                    Mobile = Mobile,
                    Status = Status
                };

                DbContext.salesmen.Add(saleman);

                salesmen.Add(saleman);

            }

            if (salesmen == null || salesmen.Count == 0)
            {
                return "请确保上传文件数据不为空，导入失败";
            }

            DbContext.SaveChanges();

            return HandleResult.Success;
        }
    }
}