<%@ WebHandler Language="C#"  Class="FileUploadHandler" %>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Configuration;
using System.IO;
using System.Web.Script.Serialization;


    /// <summary>
    /// Descripción breve de FileUploadHandler
    /// </summary>
    public class FileUploadHandler : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            try
            {
                if (context.Request.QueryString["upload"] != null && context.Request.QueryString["solicitud"] != null && context.Request.QueryString["fkrequisito"] != null && context.Request.QueryString["pksolicitud"] != null && context.Request.QueryString["texto"] != null && context.Request.QueryString["origen"] != null)
                {
                    //string pathrefer = context.Request.UrlReferrer.ToString();
                    string Serverpath = ConfigurationManager.AppSettings["DocumentosPDF"].ToString(); // HttpContext.Current.Server.MapPath("DocumentosPDF");
                    Serverpath += "\\" + context.Request.QueryString["solicitud"].ToString() + "\\DocumentosREQ";

                    var postedFile = context.Request.Files[0];
                    string ext = Path.GetExtension(postedFile.FileName);
                    //if (ext == ".pdf" || ext == ".PDF")
                    {
                        string file;

                        //For IE to get file name
                        if (HttpContext.Current.Request.Browser.Browser.ToUpper() == "IE")
                        {
                            string[] files = postedFile.FileName.Split(new char[] { '\\' });
                            file = files[files.Length - 1].Replace(" ","_");
                        }
                        else
                        {
                            file = postedFile.FileName.Replace(" ", "_");
                        }

                        
                            
                        if (!Directory.Exists(Serverpath))
                            Directory.CreateDirectory(Serverpath);

                        string fileDirectory = Serverpath;
                        if (context.Request.QueryString["fileName"] != null)
                        {
                            file = context.Request.QueryString["fileName"].Replace(" ", "_");
                            if (File.Exists(fileDirectory + "\\" + file))
                            {
                                File.Delete(fileDirectory + "\\" + file);
                            }
                        }

                        //string ext = Path.GetExtension(fileDirectory + "\\" + file);
                        //file = Guid.NewGuid() + ext;

                        fileDirectory = Serverpath + "\\" + file;
                        if (context.Request.QueryString["DOCFISICO"] != null)
                            fileDirectory = Serverpath + "\\" + context.Request.QueryString["solicitud"].ToString() + "_DF.pdf";
                        if (File.Exists(fileDirectory) == false)
                        {
                            postedFile.SaveAs(fileDirectory);

                            context.Response.AddHeader("Vary", "Accept");
                            try
                            {
                                if (context.Request["HTTP_ACCEPT"].Contains("application/json"))
                                    context.Response.ContentType = "application/json";
                                else
                                    context.Response.ContentType = "text/plain";
                            }
                            catch
                            {
                                context.Response.ContentType = "text/plain";
                            }
                            
                            int nPKDocumento = 0;
                            
                            if (context.Request.QueryString["origen"] == "requisito")
                            {
                                AyABL.TRA.documentoBL objdocumentoBL = new AyABL.TRA.documentoBL();
                                objdocumentoBL.objdocumentoEL.Descripcion = context.Request.QueryString["texto"];
                                objdocumentoBL.objdocumentoEL.NOMBRE = postedFile.FileName.Replace(" ", "_");
                                objdocumentoBL.objdocumentoEL.FKREQUISITO = int.Parse(context.Request.QueryString["fkrequisito"]);
                                objdocumentoBL.objdocumentoEL.FKSOLICITUD = int.Parse(context.Request.QueryString["pksolicitud"]);

                                nPKDocumento = objdocumentoBL.insertarDocumento();
                            }
                            if (context.Request.QueryString["origen"] == "adjunto")
                            {
                                AyABL.Tran.adjuntoBL objdocumentoBL = new AyABL.Tran.adjuntoBL();
                                objdocumentoBL.objadjuntoEL.NOMBRE = postedFile.FileName;
                                objdocumentoBL.objadjuntoEL.DESCRIPCION = context.Request.QueryString["texto"];
                                
                                objdocumentoBL.objadjuntoEL.FKSOLICITUD = int.Parse(context.Request.QueryString["pksolicitud"]);

                                nPKDocumento = objdocumentoBL.insertarAdjunto();
                            }
                            //if (nPKDocumento != 0)
                            //{
                            //    //context.Response.Write("Success");
                            //    context.Response.ContentType = "text/plain";
                            //    context.Response.Write(file);
                            //}
                            //else
                            //{
                            //    File.Delete(fileDirectory); 
                            //}
                            
                            if(File.Exists(fileDirectory))
                            {
                                context.Response.ContentType = "text/plain";
                                context.Response.Write(file);
                            }
                            else
                            {
                                context.Response.ContentType = "text/plain";
                                context.Response.Write("falloGuardar");
                            }
                            return;
                        }
                        else
                        {
                            context.Response.ContentType = "text/plain";
                            context.Response.Write("falloExiste");
                            return;
                        }
                    }
                    //else
                    //{
                        
                    //    context.Response.Write("errorEXT");
                    //    return;
                    //}
                }
                if (context.Request.QueryString["pkeliminar"] != null && context.Request.QueryString["solicitud"] != null)
                {
                    string Serverpath = HttpContext.Current.Server.MapPath("DocumentosPDF");
                    Serverpath += "\\" + context.Request.QueryString["solicitud"].ToString() + "\\DocumentosREQ";
                    string file = context.Request.QueryString["pkeliminar"];
                    string fileDirectory = Serverpath + "\\" + file;
                    //File.Delete(fileDirectory);
                   
                    var wrapper = new { d = "exitoso" };
                    context.Response.Write(Newtonsoft.Json.JsonConvert.SerializeObject(wrapper));
                    return;
                }
            }
            catch (Exception exp)
            {
                context.Response.Write(exp.Message);
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }