using System;
using System.IO;

namespace Ant.Service.Utilities
{
    /// <summary>
    /// UpLoadFiles 的摘要说明
    /// </summary>
    public class UpLoadFiles : System.Web.UI.Page
    {
        public UpLoadFiles()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }

        public string UploadFile(string filePath, int maxSize, string[] fileType, System.Web.UI.HtmlControls.HtmlInputFile TargetFile)
        {
            string Result = "UnDefine";
            bool typeFlag = false;
            string FilePath = filePath;
            int MaxSize = maxSize;
            string strFileName, strNewName, strFilePath;
            if (TargetFile.PostedFile.FileName == "")
            {
                return "FILE_ERR";
            }
            strFileName = TargetFile.PostedFile.FileName;
            TargetFile.Accept = "*/*";
            strFilePath = FilePath;
            if (Directory.Exists(strFilePath) == false)
            {
                Directory.CreateDirectory(strFilePath);
            }
            FileInfo myInfo = new FileInfo(strFileName);
            string strOldName = myInfo.Name;
            strNewName = strOldName.Substring(strOldName.LastIndexOf("."));
            strNewName = strNewName.ToLower();
            if (TargetFile.PostedFile.ContentLength <= MaxSize)
            {
                for (int i = 0; i <= fileType.GetUpperBound(0); i++)
                {
                    if (strNewName.ToLower() == fileType[i].ToString()) { typeFlag = true; break; }
                }
                if (typeFlag)
                {
                    string strFileNameTemp = GetUploadFileName();
                    string strFilePathTemp = strFilePath;
                    float strFileSize = TargetFile.PostedFile.ContentLength;
                    strOldName = strFileNameTemp + strNewName;
                    strFilePath = strFilePath + "\\" + strOldName;
                    TargetFile.PostedFile.SaveAs(strFilePath);
                    Result = strOldName + "|" + strFileSize;
                    TargetFile.Dispose();
                }
                else
                {
                    return "TYPE_ERR";
                }
            }
            else
            {
                return "SIZE_ERR";
            }
            return (Result);
        }

        /// <summary>
        /// 上传文件
        /// </summary>
        /// <param name="filePath">保存文件地址</param>
        /// <param name="maxSize">文件最大大小</param>
        /// <param name="fileType">文件后缀类型</param>
        /// <param name="TargetFile">控件名</param>
        /// <param name="saveFileName">保存后的文件名和地址</param>
        /// <param name="fileSize">文件大小</param>
        /// <returns></returns>
        public string UploadFile(string filePath, int maxSize, string[] fileType, System.Web.UI.HtmlControls.HtmlInputFile TargetFile, out string saveFileName, out int fileSize)
        {
            saveFileName = "";
            fileSize = 0;

            string Result = "";
            bool typeFlag = false;
            string FilePath = filePath;
            int MaxSize = maxSize;
            string strFileName, strNewName, strFilePath;
            if (TargetFile.PostedFile.FileName == "")
            {
                return "请选择上传的文件";
            }
            strFileName = TargetFile.PostedFile.FileName;
            TargetFile.Accept = "*/*";
            strFilePath = FilePath;
            if (Directory.Exists(strFilePath) == false)
            {
                Directory.CreateDirectory(strFilePath);
            }
            FileInfo myInfo = new FileInfo(strFileName);
            string strOldName = myInfo.Name;
            strNewName = strOldName.Substring(strOldName.LastIndexOf("."));
            strNewName = strNewName.ToLower();
            if (TargetFile.PostedFile.ContentLength <= MaxSize)
            {
                string strFileNameTemp = GetUploadFileName();
                string strFilePathTemp = strFilePath;
                strOldName = strFileNameTemp + strNewName;
                strFilePath = strFilePath + "\\" + strOldName;

                fileSize = TargetFile.PostedFile.ContentLength / 1024;
                saveFileName = strFilePath.Substring(strFilePath.IndexOf("FileUpload\\"));
                TargetFile.PostedFile.SaveAs(strFilePath);
                TargetFile.Dispose();
            }
            else
            {
                return "上传文件超出指定的大小";
            }
            return (Result);
        }

        public string UploadFile(string filePath, int maxSize, string[] fileType, string filename, System.Web.UI.HtmlControls.HtmlInputFile TargetFile)
        {
            string Result = "UnDefine";
            bool typeFlag = false;
            string FilePath = filePath;
            int MaxSize = maxSize;
            string strFileName, strNewName, strFilePath;
            if (TargetFile.PostedFile.FileName == "")
            {
                return "FILE_ERR";
            }
            strFileName = TargetFile.PostedFile.FileName;
            TargetFile.Accept = "*/*";
            strFilePath = FilePath;
            if (Directory.Exists(strFilePath) == false)
            {
                Directory.CreateDirectory(strFilePath);
            }
            FileInfo myInfo = new FileInfo(strFileName);
            string strOldName = myInfo.Name;
            strNewName = strOldName.Substring(strOldName.Length - 3, 3);
            strNewName = strNewName.ToLower();
            if (TargetFile.PostedFile.ContentLength <= MaxSize)
            {
                for (int i = 0; i <= fileType.GetUpperBound(0); i++)
                {
                    if (strNewName.ToLower() == fileType[i].ToString()) { typeFlag = true; break; }
                }
                if (typeFlag)
                {
                    string strFileNameTemp = filename;
                    string strFilePathTemp = strFilePath;
                    strOldName = strFileNameTemp + "." + strNewName;
                    strFilePath = strFilePath + "\\" + strOldName;
                    TargetFile.PostedFile.SaveAs(strFilePath);
                    Result = strOldName;
                    TargetFile.Dispose();
                }
                else
                {
                    return "TYPE_ERR";
                }
            }
            else
            {
                return "SIZE_ERR";
            }
            return (Result);
        }

        public string GetUploadFileName()
        {
            string Result = "";
            DateTime time = DateTime.Now;
            Result += time.Year.ToString() + FormatNum(time.Month.ToString(), 2) + FormatNum(time.Day.ToString(), 2) + FormatNum(time.Hour.ToString(), 2) + FormatNum(time.Minute.ToString(), 2) + FormatNum(time.Second.ToString(), 2) + FormatNum(time.Millisecond.ToString(), 3);
            return (Result);
        }

        public string FormatNum(string Num, int Bit)
        {
            int L;
            L = Num.Length;
            for (int i = L; i < Bit; i++)
            {
                Num = "0" + Num;
            }
            return (Num);
        }

    }
}