using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.IO;
using System.Collections;
using System.Web.Script.Serialization;
using System.Globalization;

namespace NetWorkHardNew.GlobalAshx
{
    /// <summary>
    /// $codebehindclassname$ 的摘要说明
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    public class KindeditorUpload : IHttpHandler
    {

        //文件保存目录路径
        private String savePath = "attached";
        //定义允许上传的文件扩展名
        private String fileTypes = "gif,jpg,jpeg,png,bmp,swf";
        //最大文件大小
        private int maxSize = 100000000;

        public void ProcessRequest(HttpContext context)
        {
            HttpPostedFile imgFile = context.Request.Files["imgFile"];
            if (imgFile == null)
            {
                showError(context, "请选择文件。");
            }
			string DirectoryName = context.Request.QueryString["DirectoryName"];
			if (string.IsNullOrEmpty(DirectoryName) == true) DirectoryName = "attached";
			savePath = System.AppDomain.CurrentDomain.BaseDirectory + DirectoryName;

			if (Directory.Exists(savePath) == false) Directory.CreateDirectory(savePath);

            String fileName = imgFile.FileName;
            String fileExt = Path.GetExtension(fileName).ToLower();
            ArrayList fileTypeList = ArrayList.Adapter(fileTypes.Split(','));

            if (imgFile.InputStream == null || imgFile.InputStream.Length > maxSize)
            {
                showError(context, "大小超过限制。");
            }

            if (String.IsNullOrEmpty(fileExt) || Array.IndexOf(fileTypes.Split(','), fileExt.Substring(1).ToLower()) == -1)
            {
                showError(context, "上传文件扩展名是不允许的扩展名。");
            }

            String newFileName = DateTime.Now.ToString("yyyyMMddHHmmss_ffff", DateTimeFormatInfo.InvariantInfo) + fileExt;
			String filePath = savePath + "/" + newFileName;

            imgFile.SaveAs(filePath);

			String fileUrl = "../" + DirectoryName + "/" + newFileName;

            Hashtable hash = new Hashtable();
            hash["error"] = 0;
            hash["url"] = fileUrl;
            context.Response.AddHeader("Content-Type", "text/html; charset=UTF-8");
            string jsonString = new JavaScriptSerializer().Serialize(hash);
            context.Response.Write(jsonString);
            context.Response.End();
        }

        private void showError(HttpContext context, string message)
        {
            Hashtable hash = new Hashtable();
            hash["error"] = 1;
            hash["message"] = message;
            context.Response.AddHeader("Content-Type", "text/html; charset=UTF-8");
            string jsonString = new JavaScriptSerializer().Serialize(hash);
            context.Response.Write(jsonString);
            context.Response.End();
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}