using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;
using System.IO;

namespace PACC
{
    public partial class Form1 : Form
    {
        private string attachDir;
        public Form1()
        {
            InitializeComponent();
        }

        private void btnSelectDir_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            if (fbd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                attachDir = fbd.SelectedPath;
                label1.Text = attachDir;
            }
        }

        private void btnDo_Click(object sender, EventArgs e)
        {

            Do(InsertAttachments);

        }

        private void InsertAttachments() {
            //attachDir = @"C:\Users\Administrator\Desktop\平安財產\平安財產";
            if (string.IsNullOrEmpty(attachDir))
            {
                MessageBox.Show("請先選擇附件所在目錄！");
                return;
            }

            string excelFileName = string.Empty;
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "excel檔案(*.xlsx)|*.xlsx";
            if (ofd.ShowDialog() != System.Windows.Forms.DialogResult.OK)
                return;
            else {
                excelFileName = ofd.FileName;
            }

            Excel.Application app = new Excel.Application();
            app.Visible = true;
            Excel.Workbook wb = app.Workbooks.Open(Filename: excelFileName);
            Excel.Worksheet sht = wb.Worksheets[1];

            Excel.OLEObjects objs = sht.OLEObjects();
            for (int i = objs.Count; i >= 1; i--)
                objs.Item(i).Delete();

            FileInfo[] fileInfos = new DirectoryInfo(attachDir).GetFiles("*.xlsx");
            List<string> lFiles = new List<string>();
            List<string> lYjhs = new List<string>();
            foreach (var item in fileInfos)
            {
                lFiles.Add(item.FullName);
                lYjhs.Add(GetYjh(item.Name));
            }


            int startLine = 9, lastLine = 68;
            int yjzhColNo = 3;

            Excel.Range rng = null;
            int count = 0;
            for (int i = startLine; i <= lastLine; i++)
            {
                if (null != sht.Cells[i, yjzhColNo])
                {
                    object o = sht.Cells[i, yjzhColNo].Value;
                    string yjh = o.ToString();

                    if (lYjhs.Contains(yjh))
                    {
                        int index = lYjhs.IndexOf(yjh);
                        rng = sht.Cells[i, 7]; rng.Select();
                        Excel.OLEObject obj = objs.Add(Filename: lFiles[index]
                            , Link: false
                            , DisplayAsIcon: true
                            , IconFileName: "excel.exe"
                            , IconIndex: 0
                            , IconLabel: yjh
                            , Left: rng.Left
                            , Top: rng.Top
                            , Width: rng.Width
                            , Height: rng.Height);
                        obj.Select();
                        rng.Select();
                        count++;
                    }
                }
                if (count == -1)
                    break;
            }

            if (0!=count)
            MessageBox.Show(string.Format("插入附件 {0} 個！",count));
        }

        private string GetYjh(string filename)
        {
            string result = string.Empty;
            string temp1 = filename.Split('_')[1];
            result = temp1.Substring(0, temp1.IndexOf('-'));
            return result;
        }

        private void Do(MyDo myDo) {
            try
            {
                if (null != myDo)
                {
                    myDo();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
        public delegate void MyDo();


    }
}