<%@ WebHandler Language="C#" Class="Upload" %>

using System;
using System.Web;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
using CandidateApp.Web;

public class Upload : IHttpHandler
{
    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/plain";
        context.Response.Expires = -1;
        try
        {
            // foreach added for jquery file upload. for uploadify remove forearch loop.
            foreach (string file in context.Request.Files)
            {
                HttpPostedFile postedFile = context.Request.Files[file] as HttpPostedFile; //context.Request.Files["Filedata"];

                bool replaceInvalidChars = true;
                if (context.Request["replaceInvalidChars"] != null && context.Request["replaceInvalidChars"].ToString() != "")
                {
                    bool.TryParse(context.Request["replaceInvalidChars"].ToString(), out replaceInvalidChars);
                }

                bool overwrite = false;
                if (context.Request["overwrite"] != null && context.Request["overwrite"].ToString() != "")
                {
                    bool.TryParse(context.Request["overwrite"].ToString(), out overwrite);
                }

                //check image file section [start]
                bool isImageFile = false;
                bool checkImageFile = false;
                
                if (context.Request["checkImageFile"] != null && context.Request["checkImageFile"].ToString() != "")
                {
                    bool.TryParse(context.Request["checkImageFile"].ToString(), out checkImageFile);
                }

                if (checkImageFile)
                {
                    Stream streamObj = postedFile.InputStream;
                    var i = Image.FromStream(streamObj);

                    streamObj.Seek(0, SeekOrigin.Begin);

                    if (ImageFormat.Jpeg.Equals(i.RawFormat) || ImageFormat.Png.Equals(i.RawFormat) || ImageFormat.Gif.Equals(i.RawFormat))
                    {
                        isImageFile = true;
                    }

                    if (isImageFile)
                    {
                        System.Drawing.Image oImage = System.Drawing.Image.FromStream(streamObj);
                        int height = 0;
                        int width = 0;
                        //int.TryParse(GblConfiSettings.ResizeHeight, out height);
                        //int.TryParse(GblConfiSettings.ResizeWidth, out width);

                        if (oImage.Height > height && oImage.Width > width)
                        {
                            string folderPath = "";
                            if (context.Request["folderpath"] != null && context.Request["folderpath"].ToString() != "")
                            {
                                folderPath = context.Request["folderpath"].ToString();
                            }

                            string savepath = "";
                            if (folderPath == "")
                            {
                                savepath = context.Server.MapPath("~/" + GlobalConfigurationSettings.JQFileUploadFolderPath);
                            }
                            else
                            {
                                savepath = context.Server.MapPath("~/" + folderPath);
                            }

                            string filename = postedFile.FileName.GetPhysicalFileName(savepath, overwrite, replaceInvalidChars);
                            if (!Directory.Exists(savepath))
                                Directory.CreateDirectory(savepath);

                            postedFile.SaveAs(savepath + @"\" + filename);
                            context.Response.Write(filename);       //return physicalfilename
                            context.Response.StatusCode = 200;
                        }
                        else
                        {
                            context.Response.Write("IHWF");    
                        }
                    }
                    else
                    {
                        context.Response.Write("IIF");
                    }
                }//check image file section [end]
                else
                {
                    string folderPath = "";
                    if (context.Request["folderpath"] != null && context.Request["folderpath"].ToString() != "")
                    {
                        folderPath = context.Request["folderpath"].ToString();
                    }

                    string savepath = "";
                    if (folderPath == "")
                    {
                        savepath = context.Server.MapPath("~/" + GlobalConfigurationSettings.JQFileUploadFolderPath);
                    }
                    else
                    {
                        savepath = context.Server.MapPath("~/" + folderPath);
                    }

                    string filename = postedFile.FileName.GetPhysicalFileName(savepath, overwrite, replaceInvalidChars);
                    if (!Directory.Exists(savepath))
                        Directory.CreateDirectory(savepath);

                    postedFile.SaveAs(savepath + @"\" + filename);
                    context.Response.Write(filename);       //return physicalfilename
                    context.Response.StatusCode = 200;
                }
            }
        }
        catch (Exception)
        {
            //context.Response.Write("Error: " + ex.Message);
            context.Response.Write("DBE");
        }
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}