using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
using System.Data;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
using WebLib;

namespace Education.Report
{
    public class 扣繳領據明細郵件附件 : ReportBase
    {
        public List<扣繳明細Item> data;
        public DateTime? 起日;
        public DateTime? 迄日;

        private List<ExportColumn> columns = new List<ExportColumn>() {
            new ExportColumn() { Key="計畫代號"     , Title="計畫代號"      , Width=20 , FieldName="計畫代號"   , Align=HorizontalAlignment.Center },
            new ExportColumn() { Key="活動日期"     , Title="活動日期"      , Width=20 , FieldName="活動日期"   , Align=HorizontalAlignment.Center },
            new ExportColumn() { Key="活動名稱事由" , Title="活動名稱/事由" , Width=40 , FieldName="活動名稱事由" },
            new ExportColumn() { Key="扣繳類別"     , Title="扣繳類別"      , Width=20 , FieldName="扣繳類別名稱" },
            new ExportColumn() { Key="扣繳金額"     , Title="扣繳金額"      , Width=15 , FieldName="講師勞務費" , Align=HorizontalAlignment.Right, MoneyFormat=true },
            new ExportColumn() { Key="應扣繳稅額"   , Title="應扣繳稅額"    , Width=15 , FieldName="應扣繳稅額" , Align=HorizontalAlignment.Right, MoneyFormat=true },
            new ExportColumn() { Key="服務費"       , Title="服務費"        , Width=15 , FieldName="服務費"     , Align=HorizontalAlignment.Right, MoneyFormat=true }
        };

        public byte[] DoReport()
        {
            workbook.RemoveSheetAt(0);

            sheet = workbook.CreateSheet("扣繳領據明細");
            SetPaperAndMargin(sheet);
            sheet.RepeatingRows = new CellRangeAddress(0, 2, -1, -1);

            excel.Sheet = sheet;

            // 1. 預先過濾出需要匯出的欄位
            var activeColumns = columns.Where(c => true).ToList();

            // 報表抬頭
            int rowId = 0;
            excel.MergeCell(rowId, 0, rowId, 6, BorderStyle.None);
            excel.SetCellValue(rowId, 0, PublicVariable.CompanyName, headerStyle);
            excel.SetRowHeightInPoints(rowId, 20);
            rowId++;
            
            excel.MergeCell(rowId, 0, rowId, 6, BorderStyle.None);
            if (起日 != null && 迄日 != null)
                excel.SetCellValue(rowId, 0, 
                    string.Format("[日期：{0:yyyy-MM-dd} ~ {1:yyyy-MM-dd}] 扣繳領據明細", 起日, 迄日), headerStyle);
            else if (起日 != null && 迄日 == null)
                excel.SetCellValue(rowId, 0, 
                    string.Format("[日期：{0:yyyy-MM-dd} ~ ] 扣繳領據明細", 起日), headerStyle);
            else if (起日 == null && 迄日 != null)
                excel.SetCellValue(rowId, 0, 
                    string.Format("[日期：~ {0:yyyy-MM-dd}] 扣繳領據明細", 迄日), headerStyle);
            else
                excel.SetCellValue(rowId, 0, "[日期：全部] 扣繳領據明細", headerStyle);
            excel.SetRowHeightInPoints(rowId, 20);
            rowId++;

            excel.MergeCell(rowId, 0, rowId, 6, BorderStyle.None);
            excel.SetCellValue(rowId, 0, 
                string.Format("領款人姓名：{0} 身分證字號：{1}", 
                    data.FirstOrDefault()?.領款人姓名, 
                    data.FirstOrDefault()?.身分證字號), 
                titleStyleLeftNoBorder);
            excel.SetRowHeightInPoints(rowId, 16);
            rowId++;

            // 表頭
            int col = 0;
            foreach (var column in activeColumns)
            {
                excel.SetCellValue(rowId, col, column.Title, bodyStyleCenter);
                excel.SetColumnWidthInChars(col, column.Width);
                col++;
            }
            rowId++;

            // 報表內容
            foreach (var r in data)
            {
                col = 0;
                foreach (var column in activeColumns)
                {
                    var cellStyle = bodyStyleLeft;
                    switch (column.Align)
                    {
                        case HorizontalAlignment.Center:
                            cellStyle = bodyStyleCenter;
                            break;
                        case HorizontalAlignment.Right:
                            cellStyle = bodyStyleRight;
                            break;
                    }
                    var value = r.FieldValue(column.FieldName);
                    SetDataValue(rowId, col, column, value, cellStyle);
                    col++;
                }

                rowId++;
            }

            // 報表尾
            excel.MergeCell(rowId, 0, rowId, 3, BorderStyle.Thin);
            excel.SetCellValue(rowId, 0, "總計", bodyStyleRight);
            excel.SetCellValue(rowId, 4, DAC.GetDouble(data.Sum(p => p.講師勞務費)), bodyNumberStyle2);
            excel.SetCellValue(rowId, 5, DAC.GetDouble(data.Sum(p => p.應扣繳稅額)), bodyNumberStyle2);
            excel.SetCellValue(rowId, 6, DAC.GetDouble(data.Sum(p => p.服務費)), bodyNumberStyle);

            MemoryStream ms = new MemoryStream();
            workbook.Write(ms);
            return ms.ToArray();
        }
    }
}