using System;
using System.Configuration;
using System.Data;
using System.IO;
using System.Net;
using System.Text;
using System.Threading;
using System.Windows.Forms;
using DevComponents.DotNetBar;

namespace Cyberpipe
{
    public delegate void ReloadUserDocumentGrid(int pageIndex);
    public partial class FrmDocumentEdit : Office2007Form
    {
        public event ReloadUserDocumentGrid reloadGrid;
        int result;
        string filename;
        string fileNamePath;
        //string fileTitle;
        string fileType;
        public FrmDocumentEdit()
        {
            InitializeComponent();
            progressBar1.Visible = false;
        }

        private void btn_ok_Click(object sender, EventArgs e)
        {
            if (txt_file.Text == "")
            {
                MessageBox.Show("请选择要添加的文档！", "提示");
                return;
            }
            filename = getFileName(txt_file.Text.Trim());
            fileNamePath = txt_file.Text.Trim();
            if (combo_file_type.SelectedItem.ToString() == "")
            {
                MessageBox.Show("请选择文档类型！", "提示");
                return;
            }
            fileType = combo_file_type.SelectedItem.ToString().Trim();
            //if (txt_title.Text.Trim() == "")
            //{
            //    MessageBox.Show("请输入文档标题！", "提示");
            //    return;
            //}
            //else
            //{
            //    fileTitle = txt_title.Text.Trim();
            //}
            result = 0;
            try
            {
                Thread upLoad = new Thread(doUpload);
                upLoad.IsBackground = true;
                upLoad.Start(e);
            }
            catch (Exception ex)
            {
                MessageBox.Show("添加失败:" + ex, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            finally
            {
                progressBar1.Visible = false;
            }
            
        }
        private void doUpload(Object e)
        {
            Invoke((EventHandler)delegate
            {
                progressBar1.Visible = true;            
            });
            
            string[] filesPath = fileNamePath.Split(';');
            string[] filesName = filename.Split(';');
            string errorUploadFiles = "";
            bool flag = true;
            for (int i = 0; i < filesPath.Length-1; i++) { 
              result = Upload_Request2(ConfigurationManager.AppSettings["upurl"], filesPath[i], filesName[i], progressBar1);
              if (result == 1)
              {
                  string newFileTitle = filesName[i].Substring(0,filesName[i].LastIndexOf('.'));
                //string sql = "insert into casic_userdocument (title,filetype,upday,writer,filename,sysname) values ('" + fileTitle + "','" + fileType + "',to_date('" + DateTime.Now.ToShortDateString() + "','yyyy-MM-dd'),'" + Utility.userName + "','" + filesName[i] + "','EMS')";
                  string sql = "insert into casic_userdocument (title,filetype,upday,writer,filename,sysname) values ('" + newFileTitle + "','" + fileType + "',to_date('" + DateTime.Now.ToShortDateString() + "','yyyy-MM-dd'),'" + Utility.userName + "','" + filesName[i] + "','GHFX')";
                OracleUtils.ExecuteNonQuery(OracleUtils.ConnectionString, CommandType.Text, sql);

                //this.Invoke((EventHandler)delegate
                //{
                //    reloadGrid(1);
                //});
                //MessageBox.Show("添加成功！", "结果", MessageBoxButtons.OK, MessageBoxIcon.Information);
                //this.Invoke((EventHandler)delegate
                //{
                //    this.Dispose();
                //    this.Close();
                //});
                 
              }
              else
              {
                errorUploadFiles += filesPath[i]+";";
                flag = false;
                //MessageBox.Show("文件上传失败！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
              }
            }
            if (!flag)
            {
                Invoke((EventHandler)delegate
                {
                    reloadGrid(1);
                });
                MessageBox.Show("文件" + errorUploadFiles + "上传失败！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                Invoke((EventHandler)delegate
                {
                    Dispose();
                    Close();
                });
            }
            else {
                Invoke((EventHandler)delegate
                {
                    reloadGrid(1);
                });
                MessageBox.Show("添加成功！", "结果", MessageBoxButtons.OK, MessageBoxIcon.Information);
                Invoke((EventHandler)delegate
                {
                    Dispose();
                    Close();
                });
            }

        }

        private string getFileName(string path)
        {           
            //return DateTime.Now.ToString("yyyyMMddHHmmss", DateTimeFormatInfo.InvariantInfo) + Path.GetExtension(path);
            string[] paths = path.Split(';');
            string fileName = "";
            for (int i = 0; i < paths.Length - 1; i++) { //之所以-1，是因为最后一个分割是空
                 fileName += Path.GetFileName(paths[i])+";";
            }
            return fileName;
           
        }

        /// <summary> 
        /// 将本地文件上传到指定的服务器(HttpWebRequest方法) 
        /// </summary> 
        /// <param name="address">文件上传到的服务器</param> 
        /// <param name="fileNamePath">要上传的本地文件（全路径）</param> 
        /// <param name="saveName">文件上传后的名称</param> 
        /// <param name="progressBar">上传进度条</param> 
        /// <returns>成功返回1，失败返回0</returns> 
        private int Upload_Request2(string address, string fileNamePath, string saveName, ProgressBar progressBar)
        {
            int returnValue = 0;     // 要上传的文件 
            //FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
            FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read, FileShare.Read, 1024, true);
            BinaryReader r = new BinaryReader(fs);     //时间戳 
            string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");
            byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "\r\n");     //请求头部信息 
            StringBuilder sb = new StringBuilder();
            sb.Append("--");
            sb.Append(strBoundary);
            sb.Append("\r\n");
            sb.Append("Content-Disposition: form-data; name=\"");
            sb.Append("file");
            sb.Append("\"; filename=\"");
            sb.Append(saveName);
            sb.Append("\";");
            sb.Append("\r\n");
            sb.Append("Content-Type: ");
            sb.Append("application/octet-stream");
            sb.Append("\r\n");
            sb.Append("\r\n");
            string strPostHeader = sb.ToString();
            byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader);     // 根据uri创建HttpWebRequest对象 
            HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(address));
            httpReq.Method = "POST";     //对发送的数据不使用缓存 
            httpReq.AllowWriteStreamBuffering = false;     //设置获得响应的超时时间（300秒） 
            httpReq.Timeout = 30000000;
            httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary;
            long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length;
            long fileLength = fs.Length;
            httpReq.ContentLength = length;
            try
            {
                Invoke((EventHandler)delegate
                {
                    progressBar.Maximum = int.MaxValue;
                    progressBar.Minimum = 0;
                    progressBar.Value = 0;
                });
                //每次上传4k
                //int bufferLength = 4096;
                int bufferLength = 40096;
                byte[] buffer = new byte[bufferLength]; //已上传的字节数 
                long offset = 0;         //开始上传时间 
                DateTime startTime = DateTime.Now;
                int size = r.Read(buffer, 0, bufferLength);
                Stream postStream = httpReq.GetRequestStream();         //发送请求头部消息 
                postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
                while (size > 0)
                {
                    postStream.Write(buffer, 0, size);
                    offset += size;
                    Invoke((EventHandler)delegate
                    {
                        progressBar.Value = (int)(offset * (int.MaxValue / length));
                    });
                    //Application.DoEvents();
                    size = r.Read(buffer, 0, bufferLength);
                }
                //添加尾部的时间戳 
                postStream.Write(boundaryBytes, 0, boundaryBytes.Length);
                postStream.Close();         //获取服务器端的响应 
                WebResponse webRespon = httpReq.GetResponse();
                Stream s = webRespon.GetResponseStream();
                //读取服务器端返回的消息
                StreamReader sr = new StreamReader(s);
                String sReturnString = sr.ReadLine();
                s.Close();
                sr.Close();
                if (sReturnString == "Success")
                {
                    returnValue = 1;
                }
                else if (sReturnString == "Error")
                {
                    returnValue = 0;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                fs.Close();
                r.Close();
            } 
            return returnValue;
        }


        // <summary>
        /// 将本地文件上传到指定的服务器(HttpWebRequest方法)
        /// </summary>
        /// <param name="address">文件上传到的服务器</param>
        /// <param name="fileNamePath">要上传的本地文件（全路径）</param>
        /// <param name="saveName">文件上传后的名称</param>
        /// <param name="progressBar">上传进度条</param>
        /// <returns>成功返回1，失败返回0</returns>
        private int Upload_Request(string address, string fileNamePath, string saveName, ProgressBar progressBar)
        {
            int returnValue = 0;
            // 要上传的文件
            FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
            BinaryReader r = new BinaryReader(fs);
            //时间戳
            string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");
            byte[] boundaryBytes = Encoding.ASCII.GetBytes("/r/n--" + strBoundary + "/r/n");
            //请求头部信息
            StringBuilder sb = new StringBuilder();
            sb.Append("--");
            sb.Append(strBoundary);
            sb.Append("\r\n");
            sb.Append("Content-Disposition: form-data; name=\"");
            sb.Append("file");
            sb.Append("\"; filename=\"");
            sb.Append(saveName);
            sb.Append("\"");
            sb.Append("\r\n");
            sb.Append("Content-Type: ");
            sb.Append("application/octet-stream");
            sb.Append("\r\n");
            sb.Append("\r\n");
            string strPostHeader = sb.ToString();
            byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader);
            // 根据uri创建HttpWebRequest对象
            HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(address));
            httpReq.Method = "POST";
            //对发送的数据不使用缓存
            httpReq.AllowWriteStreamBuffering = false;
            //设置获得响应的超时时间（300秒）
            httpReq.Timeout = 300000;
            httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary;
            long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length;
            long fileLength = fs.Length;
            httpReq.ContentLength = length;
            try
            {
                progressBar.Maximum = int.MaxValue;
                progressBar.Minimum = 0;
                progressBar.Value = 0;
                //每次上传4k
                int bufferLength = 4096;
                byte[] buffer = new byte[bufferLength];
                //已上传的字节数
                long offset = 0;
                //开始上传时间
                DateTime startTime = DateTime.Now;
                int size = r.Read(buffer, 0, bufferLength);
                Stream postStream = httpReq.GetRequestStream();
                //发送请求头部消息
                postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
                while (size > 0)
                {
                    postStream.Write(buffer, 0, size);
                    offset += size;
                    progressBar.Value = (int)(offset * (int.MaxValue / length));
                    TimeSpan span = DateTime.Now - startTime;
                    double second = span.TotalSeconds;
                    //lblTime.Text = "已用时：" + second.ToString("F2") + "秒";
                    //if (second > 0.001)
                    //{
                    //    lblSpeed.Text = " 平均速度：" + (offset / 1024 / second).ToString("0.00") + "KB/秒";
                    //}
                    //else
                    //{
                    //    lblSpeed.Text = " 正在连接…";
                    //}
                    //lblState.Text = "已上传：" + (offset * 100.0 / length).ToString("F2") + "%";
                    //lblSize.Text = (offset / 1048576.0).ToString("F2") + "M/" + (fileLength / 1048576.0).ToString("F2") + "M";
                    Application.DoEvents();
                    size = r.Read(buffer, 0, bufferLength);
                }
                //添加尾部的时间戳
                postStream.Write(boundaryBytes, 0, boundaryBytes.Length);
                postStream.Close();
                //获取服务器端的响应
                WebResponse webRespon = httpReq.GetResponse();
                Stream s = webRespon.GetResponseStream();
                StreamReader sr = new StreamReader(s);
                //读取服务器端返回的消息
                String sReturnString = sr.ReadLine();
                s.Close();
                sr.Close();
                if (sReturnString == "Success")
                {
                    returnValue = 1;
                }
                else if (sReturnString == "Error")
                {
                    returnValue = 0;
                }
            }
            catch(Exception ex)
            {
                returnValue = 0;
                string str = ex.ToString();
            }
            finally
            {
                fs.Close();
                r.Close();
            }
            return returnValue;
        }

        private void btn_file_Click(object sender, EventArgs e)
        {
            OpenFileDialog dlg = new OpenFileDialog();
            //dlg.Filter = "上传文档|*.doc;*.docx;*.xls;*.xlsx;*.pdf;*.jpg;*png;*.gif;*.bmp;";
            dlg.Multiselect = true;
            
           
            if (dlg.ShowDialog() == DialogResult.OK)
            {
                txt_file.Text = "";
                for (int i = 0; i < dlg.FileNames.Length; i++)
                {

                if (FileStatus.FileIsOpen(dlg.FileNames[i]) == 1)
                {
                    MessageBox.Show("此文件已经打开，请关闭后在上传！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return;
                }
                FileInfo fileInfo = new FileInfo(dlg.FileNames[i]);
                long size = fileInfo.Length / 1024 / 1024;
                if (size > 500)
                {
                    MessageBox.Show("上传文件不能大于500M！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return;
                }
                txt_file.Text += dlg.FileNames[i] + ";";
             }
            }
        }
    }
}