using System;
using System.Data;
using System.IO;
using NPOI.SS.UserModel;

namespace FineUIPro.Web.HSSE.HazardousMG
{
    /// <summary>
    /// 危大、超危工程导入页面
    /// </summary>
    public partial class HazardProjectDataIn : PageBase
    {
        /// <summary>
        /// 上传预设的虚拟路径
        /// </summary>
        private string initPath = BLL.Const.ExcelUrl;

        /// <summary>
        /// 加载页面
        /// </summary>
        protected void Page_Load(object sender, EventArgs e)
        {
        }

        #region 模板下载
        /// <summary>
        /// 下载导入模板
        /// </summary>
        protected void btnTemplate_Click(object sender, EventArgs e)
        {
            string fileName = "危大超危工程导入模板.xls";
            string rootPath = Server.MapPath("~/");
            string fullPath = rootPath + initPath;
            if (!Directory.Exists(fullPath))
            {
                Directory.CreateDirectory(fullPath);
            }
            string filePath = fullPath + fileName;

            BLL.Common.NPOIExcel excel = new BLL.Common.NPOIExcel();
            string[] cols = { "分部分项工程", "施工内容", "风险等级", "开工时间", "结束时间", "现场负责人", "备注" };
            short[] widths = { 30, 40, 16, 16, 16, 16, 30 };

            ////表头样式：白字加粗、蓝底、带边框
            IFont headerFont = excel.CreateFont();
            headerFont.Boldweight = 700;
            headerFont.Color = BLL.Common.NPOIColor.WHITE;
            ICellStyle headerStyle = excel.CreateCellStyle();
            headerStyle.SetFont(headerFont);
            headerStyle.FillForegroundColor = BLL.Common.NPOIColor.ROYAL_BLUE;
            headerStyle.FillPattern = FillPattern.SolidForeground;
            headerStyle.BorderTop = BorderStyle.Thin;
            headerStyle.BorderBottom = BorderStyle.Thin;
            headerStyle.BorderLeft = BorderStyle.Thin;
            headerStyle.BorderRight = BorderStyle.Thin;

            for (int i = 0; i < cols.Length; i++)
            {
                excel.SetValue(0, i, cols[i]);
                excel.SetStyle(0, i, headerStyle);
                excel.SetColumnWidth(i, widths[i]);
            }
            excel.SetRowHeight(0, 22);

            ////开工时间、结束时间列设为日期格式（Excel 中显示为日期）
            short dateFormat = excel.ActiveSheet.Workbook.CreateDataFormat().GetFormat("yyyy-mm-dd");
            ICellStyle dateStyle = excel.CreateCellStyle();
            dateStyle.DataFormat = dateFormat;
            excel.ActiveSheet.SetDefaultColumnStyle(3, dateStyle);
            excel.ActiveSheet.SetDefaultColumnStyle(4, dateStyle);

            ////风险等级下拉（第3列，数据行 1-500）
            excel.SetValueRange(1, 500, 2, 2, new string[] { "危大工程", "超危工程" }, "请选择：危大工程 或 超危工程");

            excel.Save(filePath);

            FileInfo info = new FileInfo(filePath);
            long fileSize = info.Length;
            Response.Clear();
            Response.ContentType = "application/vnd.ms-excel";
            Response.AddHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
            Response.AddHeader("Content-Length", fileSize.ToString());
            Response.TransmitFile(filePath, 0, fileSize);
            Response.Flush();
            Response.End();
        }
        #endregion

        #region 导入
        /// <summary>
        /// 导入
        /// </summary>
        protected void btnImport_Click(object sender, EventArgs e)
        {
            try
            {
                this.txtError.Hidden = true;
                this.txtError.Text = string.Empty;
                if (string.IsNullOrEmpty(this.CurrUser.LoginProjectId))
                {
                    Alert.ShowInTop("请先选择项目！", MessageBoxIcon.Warning);
                    return;
                }
                if (this.FileExcel.HasFile == false)
                {
                    Alert.ShowInTop("请您选择Excel文件!", MessageBoxIcon.Warning);
                    return;
                }
                string ext = Path.GetExtension(FileExcel.FileName).ToLower();
                if (ext != ".xls")
                {
                    Alert.ShowInTop("请选择.xls格式的Excel文件!", MessageBoxIcon.Warning);
                    return;
                }
                string rootPath = Server.MapPath("~/");
                string fullPath = rootPath + initPath;
                if (!Directory.Exists(fullPath))
                {
                    Directory.CreateDirectory(fullPath);
                }
                string filePath = fullPath + BLL.Funs.GetNewFileName() + ext;
                if (FileExcel.PostedFile == null || FileExcel.PostedFile.ContentLength == 0)
                {
                    Alert.ShowInTop("文件上传失败，请重新选择文件！", MessageBoxIcon.Warning);
                    return;
                }
                FileExcel.PostedFile.SaveAs(filePath);

                DataTable dt = BLL.Common.NPOIHelper.ExcelToDataTable1(filePath);
                if (dt == null || dt.Rows.Count == 0)
                {
                    Alert.ShowInTop("导入数据为空！", MessageBoxIcon.Warning);
                    return;
                }
                int success = 0;
                foreach (DataRow row in dt.Rows)
                {
                    string projectName = GetCell(row, 0);
                    if (string.IsNullOrEmpty(projectName))
                    {
                        continue;
                    }
                    Model.HSSE_HazardProject info = new Model.HSSE_HazardProject
                    {
                        HazardProjectId = Guid.NewGuid().ToString(),
                        ProjectId = this.CurrUser.LoginProjectId,
                        ProjectCode = BLL.HazardProjectService.GetNewCode(),
                        ProjectName = projectName,
                        WorkContent = GetCell(row, 1),
                        RiskLevel = GetCell(row, 2),
                        StartDate = ParseDate(GetCell(row, 3)),
                        EndDate = ParseDate(GetCell(row, 4)),
                        ManagerMan = GetCell(row, 5),
                        Remark = GetCell(row, 6)
                    };
                    BLL.HazardProjectService.Add(info);
                    success++;
                }
                ShowNotify("导入成功，共导入 " + success + " 条数据！", MessageBoxIcon.Success);
                PageContext.RegisterStartupScript(ActiveWindow.GetHidePostBackReference());
            }
            catch (Exception ex)
            {
                this.txtError.Hidden = false;
                this.txtError.Text = ex.ToString();
            }
        }

        /// <summary>
        /// 安全获取单元格值
        /// </summary>
        private string GetCell(DataRow row, int index)
        {
            if (row.Table.Columns.Count > index && row[index] != null && row[index] != DBNull.Value)
            {
                return row[index].ToString().Trim();
            }
            return string.Empty;
        }

        /// <summary>
        /// 解析日期（兼容文本日期与Excel数值日期）
        /// </summary>
        private DateTime? ParseDate(string val)
        {
            if (string.IsNullOrEmpty(val))
            {
                return null;
            }
            DateTime dt;
            if (DateTime.TryParse(val, out dt))
            {
                return dt;
            }
            double oa;
            if (double.TryParse(val, out oa) && oa > 0)
            {
                try
                {
                    return DateTime.FromOADate(oa);
                }
                catch (Exception)
                {
                }
            }
            return null;
        }
        #endregion
    }
}