using System;
using System.Data;
using System.Globalization;
using System.Text;
using System.Windows.Forms;
using Forks.Utils.Data;
using Microsoft.Office.Interop.Excel;
using Application = Microsoft.Office.Interop.Excel.Application;

namespace B3ButcherWeightClient {
  public partial class QueryForm : Form {
    private int textBoxNum;
    private DataSet mResultDataSet = new DataSet();

    public QueryForm() {
      InitializeComponent();
    }

    private AutoSizeFormClass asc = new AutoSizeFormClass();

    private void QueryForm_Load(object sender, EventArgs e) {
      monthCalendar.Visible = false;
      monthCalendar.LostFocus += (s, e1) => { this.monthCalendar.Visible = false; };
      textBoxBeginTime.Text = DateTime.Today.ToString("yyyy-MM-dd") ;
      textBoxEndTime.Text = DateTime.Today.ToString("yyyy-MM-dd") ;
      asc.ControllInitializeSize(this); 
    }

    private void textBoxBeginTime_DoubleClick(object sender, EventArgs e) {
      textBoxNum = 1;
      monthCalendar.Visible = true;
      monthCalendar.Focus();
    }

    private void textBoxEndTime_DoubleClick(object sender, EventArgs e) {
      textBoxNum = 2;
      monthCalendar.Visible = true;
      monthCalendar.Focus();
    }

    private void monthCalendar_DateSelected(object sender, DateRangeEventArgs e) {
      if (textBoxNum == 1) {
        textBoxBeginTime.Text = this.monthCalendar.SelectionStart.ToString("yyyy-MM-dd",
                                                                           DateTimeFormatInfo.InvariantInfo); 
      }
      if (textBoxNum == 2) {
        string str = this.monthCalendar.SelectionStart.ToString("yyyy-MM-dd", DateTimeFormatInfo.InvariantInfo); 
        textBoxEndTime.Text = str;
      }
      monthCalendar.Visible = false;
    }

    private void QueryForm_SizeChanged(object sender, EventArgs e) {
      asc.controlAutoSize(this);
    }

    private void button1_Click(object sender, EventArgs e)
    {
      NumberColumn.Visible = false;
      IDColumn.Visible = true;
      SeqColumn.Visible = true;
      DateColumn.Visible = true;
    var querySql =
      "select [ID],[Sequence],[PhaseCode],[DateTime],[Livestock_Name],[Weight],[SubWeight],[Weight]+ISNULL([SubWeight],0) as [AllWeight] from [WeightTable] ";
    DoSelect(querySql, "", " order by [DateTime]");
    }

    //汇总查询
    private void button2_Click(object sender, EventArgs e) {   
     //阶段号、级别、头数、重量、扣重、净重
      NumberColumn.Visible = true;
      IDColumn.Visible = false;
      SeqColumn.Visible = false;
      DateColumn.Visible = false;
      string querySql =
        "select [PhaseCode],[Livestock_Name],SUM(1) AS [Number],SUM([Weight]) AS [Weight],SUM([SubWeight]) AS [SubWeight],SUM([Weight]+ISNULL([SubWeight],0)) as [AllWeight] from [WeightTable]  ";
      DoSelect(querySql, " group by [PhaseCode],[Livestock_Name]", "order by [PhaseCode]");
    } 

    private void button3_Click(object sender, EventArgs e) {
      //级别、头数、重量、扣重、净重 
      NumberColumn.Visible = true;
      IDColumn.Visible = false;
      SeqColumn.Visible = false;
      DateColumn.Visible = false;
      string querySql =
        "select [Livestock_Name],SUM(1) AS [Number],SUM([Weight]) AS [Weight],SUM([SubWeight]) AS [SubWeight],SUM([Weight]+ISNULL([SubWeight],0)) as [AllWeight] from [WeightTable]  ";
      DoSelect(querySql, " group by [Livestock_Name]", "order by [Livestock_Name]");
    }

 
    private void DoSelect(string querySql, string groupBy,string orderBy) {
      var sql = new StringBuilder();
      sql.Append(querySql);

      var isAddBegin = !string.IsNullOrEmpty(this.textBoxBeginTime.Text);
      var isAddEnd = !string.IsNullOrEmpty(this.textBoxEndTime.Text);

      var condition = new StringBuilder();

      //if(isAddBegin||isAddEnd||isAddLevel) 
      sql.Append("where 1=1 ");
      if (isAddBegin)
        condition.Append(string.Format("and [DateTime] >= '{0}' ", this.textBoxBeginTime.Text));
      else {
        condition.Append(string.Format("and [DateTime] >= '{0}' ", DateTime.Today.AddDays(-1).ToShortDateString()));
      }

      if (!string.IsNullOrWhiteSpace(txtShunXuHao.Text))
      {
        condition.Append(string.Format("and [Sequence] = '{0}' ", txtShunXuHao.Text));
      }

      if (isAddEnd)
        condition.Append(string.Format("and [DateTime] <= '{0} 23:59:59' ", this.textBoxEndTime.Text));
      condition.Append(groupBy);
      condition.Append(orderBy);
      if (condition.Length > 0)
        sql.Append(condition.ToString());

      using (ISqlUtil sqlUtil = new SqlUtil(ConfigUtil.ConnectionStr)) {
        try {
          lock (EncodeString.RwLocker) {
            this.mResultDataSet = sqlUtil.ExecuteSql(sql.ToString());
            dataGridView1.DataSource = mResultDataSet.Tables[0];
          }
          sqlUtil.Close();
        } catch (Exception ex) {
          MessageBox.Show(ex.Message);
        }
      }

    }

    private void button4_Click(object sender, EventArgs e) {
      if (OutToExcelFromDataGridView("称重数据", dataGridView1, true)) {
        MessageBox.Show("导出数据成功！");
      }
    }

    public bool OutToExcelFromDataGridView(string title, DataGridView dgv, bool isShowExcel) {
      var titleColumnSpan = 0; //标题的跨列数
      var fileName = ""; //保存的excel文件名
      int columnIndex; //列索引
      if (dgv.Rows.Count == 0)
        return false;
      /*保存对话框*/
      var sfd = new SaveFileDialog();
      sfd.Filter = "导出Excel(*.xlsx)|*.xlsx";
      sfd.FileName = title + DateTime.Now.ToString("yyyyMMddhhmmss");
      if (sfd.ShowDialog() == DialogResult.OK) {
        label2.Text = "数据导出中.....";
        fileName = sfd.FileName;
        /*建立Excel对象*/
        var excel = new Application();

        excel.Application.Workbooks.Add(true);
        excel.Visible = isShowExcel;
        /*分析标题的跨列数*/
        foreach (DataGridViewColumn column in dgv.Columns) {
          if (column.Visible == true)
            titleColumnSpan++;
        }
        /*合并标题单元格*/
        Worksheet worksheet = (Worksheet)excel.ActiveSheet;
        worksheet.get_Range(worksheet.Cells[1, 1] as Range, worksheet.Cells[1, titleColumnSpan] as Range).Merge();
        /*生成标题*/
        excel.Cells[1, 1] = title;
        SetAlign(excel.Cells[1, 1], XlHAlign.xlHAlignCenter);
        //生成字段名称
        columnIndex = 1;
        for (int i = 0; i < dgv.ColumnCount; i++) {
          if (dgv.Columns[i].Visible == true) {
            excel.Cells[2, columnIndex] = dgv.Columns[i].HeaderText;
            switch (dgv.Columns[i].HeaderText) {
              case "时间":
                ((Range)excel.Cells[2, columnIndex]).ColumnWidth = 20;
                break;
              case "级别":
                ((Range)excel.Cells[2, columnIndex]).ColumnWidth = 15;
                break;
            }
            SetAlign(excel.Cells[2, columnIndex], XlHAlign.xlHAlignCenter);
            columnIndex++;
          }
        }
        //填充数据              
        for (int i = 0; i < dgv.RowCount; i++) {
          columnIndex = 1;
          for (int j = 0; j < dgv.ColumnCount; j++) {
            if (dgv.Columns[j].Visible == true) {
              if (dgv[j, i].ValueType == typeof(string)) {
                excel.Cells[i + 3, columnIndex] = "'" + dgv[j, i].Value;
              } else {
                excel.Cells[i + 3, columnIndex] = dgv[j, i].Value;
              }
              SetAlign(excel.Cells[i + 3, columnIndex], XlHAlign.xlHAlignLeft);
              columnIndex++;
            }
          }
        }
        worksheet.SaveAs(fileName, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
                         Type.Missing, Type.Missing, Type.Missing);

        excel.Quit();
        GC.Collect();
        return true;
      }
      return false;
    }

    private static void SetAlign(Range range, XlHAlign a) {
      range.HorizontalAlignment = a;
    }

    private void textBoxBeginTime_TextChanged(object sender, EventArgs e) {

    }

  }
}