using System;
using System.Collections.Generic;
using System.Data;
using System.Windows.Forms;
using Word = Microsoft.Office.Interop.Word;
using System.IO;
 
namespace Headfree.DefUI
{
  public class WordUtility
  {
    private object tempFile = null;
    private object saveFile = null;
    private static Word._Document wDoc = null; //word文檔
    private static Word._Application wApp = null; //word進(jìn)程
    private object missing = System.Reflection.Missing.Value;
 
    public WordUtility(string tempFile, string saveFile)
    {
      this.tempFile = Path.Combine(Application.StartupPath, @tempFile);
      this.saveFile = Path.Combine(Application.StartupPath, @saveFile);
    }
 
    /// <summary>
    /// 模版包含頭部信息和表格，表格重復(fù)使用
    /// </summary>
    /// <param name="dt">重復(fù)表格的數(shù)據(jù)</param>
    /// <param name="expPairColumn">word中要替換的表達(dá)式和表格字段的對(duì)應(yīng)關(guān)系</param>
    /// <param name="simpleExpPairValue">簡單的非重復(fù)型數(shù)據(jù)</param>
    public bool GenerateWord(DataTable dt, Dictionary<string, string> expPairColumn, Dictionary<string, string> simpleExpPairValue)
    {
      if (!File.Exists(tempFile.ToString()))
      {
        MessageBox.Show(string.Format("{0}模版文件不存在，請(qǐng)先設(shè)置模版文件。", tempFile.ToString()));
        return false;
      }
      try
      {
        wApp = new Word.Application();
 
        wApp.Visible = false;
 
        wDoc = wApp.Documents.Add(ref tempFile, ref missing, ref missing, ref missing);
 
        wDoc.Activate();// 當(dāng)前文檔置前
 
        bool isGenerate = false;
 
        if (simpleExpPairValue != null && simpleExpPairValue.Count > 0)
          isGenerate = ReplaceAllRang(simpleExpPairValue);
 
        // 表格有重復(fù)
        if (dt != null && dt.Rows.Count > 0 && expPairColumn != null && expPairColumn.Count > 0)
          isGenerate = GenerateTable(dt, expPairColumn);
 
        if (isGenerate)
          wDoc.SaveAs(ref saveFile, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing,
            ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing);
 
        DisposeWord();
 
        return true;
      }
      catch (Exception ex)
      {
        MessageBox.Show("生成失敗" + ex.Message);
        return false;
      }
    }
 
    /// <summary>
    /// 單個(gè)替換 模版沒有重復(fù)使用的表格
    /// </summary>
    /// <param name="dc">要替換的</param>
    public bool GenerateWord(Dictionary<string, string> dc)
    {
      return GenerateWord(null, null, dc);
    }
 
 
    private bool GenerateTable(DataTable dt, Dictionary<string, string> expPairColumn)
    {
      try
      {
        int tableNums = dt.Rows.Count;
 
        Word.Table tb = wDoc.Tables[1];
 
        tb.Range.Copy();
 
        Dictionary<string, object> dc = new Dictionary<string, object>();
        for (int i = 0; i < tableNums; i++)
        {
          dc.Clear();
 
          if (i == 0)
          {
            foreach (string key in expPairColumn.Keys)
            {
              string column = expPairColumn[key];
              object value = null;
              value = dt.Rows[i][column];
              dc.Add(key, value);
            }
 
            ReplaceTableRang(wDoc.Tables[1], dc);
            continue;
          }
 
          wDoc.Paragraphs.Last.Range.Paste();
 
          foreach (string key in expPairColumn.Keys)
          {
            string column = expPairColumn[key];
            object value = null;
            value = dt.Rows[i][column];
            dc.Add(key, value);
          }
 
          ReplaceTableRang(wDoc.Tables[1], dc);
        }
 
 
        return true;
      }
      catch (Exception ex)
      {
        DisposeWord();
        MessageBox.Show("生成模版里的表格失敗。" + ex.Message);
        return false;
      }
    }
 
    private bool ReplaceTableRang(Word.Table table, Dictionary<string, object> dc)
    {
      try
      {
        object replaceArea = Word.WdReplace.wdReplaceAll;
 
        foreach (string item in dc.Keys)
        {
          object replaceKey = item;
          object replaceValue = dc[item];
          table.Range.Find.Execute(ref replaceKey, ref missing, ref missing, ref missing,
           ref missing, ref missing, ref missing, ref missing, ref missing,
           ref replaceValue, ref replaceArea, ref missing, ref missing, ref missing,
           ref missing);
        }
        return true;
      }
      catch (Exception ex)
      {
        DisposeWord();
        MessageBox.Show(string.Format("{0}模版中沒有找到指定的要替換的表達(dá)式。{1}", tempFile, ex.Message));
        return false;
      }
    }
 
    private bool ReplaceAllRang(Dictionary<string, string> dc)
    {
      try
      {
        object replaceArea = Word.WdReplace.wdReplaceAll;
 
        foreach (string item in dc.Keys)
        {
          object replaceKey = item;
          object replaceValue = dc[item];
          wApp.Selection.Find.Execute(ref replaceKey, ref missing, ref missing, ref missing,
           ref missing, ref missing, ref missing, ref missing, ref missing,
           ref replaceValue, ref replaceArea, ref missing, ref missing, ref missing,
           ref missing);
        }
        return true;
      }
      catch (Exception ex)
      {
        MessageBox.Show(string.Format("{0}模版中沒有找到指定的要替換的表達(dá)式。{1}", tempFile, ex.Message));
        return false;
      }
    }
 
    private void DisposeWord()
    {
      object saveOption = Word.WdSaveOptions.wdSaveChanges;
 
      wDoc.Close(ref saveOption, ref missing, ref missing);
 
      saveOption = Word.WdSaveOptions.wdDoNotSaveChanges;
 
      wApp.Quit(ref saveOption, ref missing, ref missing); //關(guān)閉Word進(jìn)程
    }
  }
}