using Newtonsoft.Json.Linq;
using qingdaoport;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Web;

namespace DSWeb.MvcShipping.DAL.MsOpSeaeYardDAL
{
    
    /// <summary>
    /// 大亚场站
    /// </summary>
    public class DataMining
    {
        string _TimeTemp = "";
        HttpHelper http = new HttpHelper();
        private string _COOKIES = "";

        public string GetHTMLWithMBLNO(string mblno)
        {
            string str = getVerificationCode();
            string html = GetWHLData(mblno,str);
            return html;
        }

        int trytimes = 0;
        public string GetWHLData(string mblno, string code)
        {
            
            string timeTemp = ConvertDateTimeInt(DateTime.Now).ToString(); ;
            string whlURL = "http://www.yydy.com/dyxt/BasicService/QueryService.aspx?" + timeTemp + "&oper=QueryByBill&param=" + mblno + "&CheckCode=" + code;
            WebRequest request = WebRequest.Create(whlURL);
            request.Method = "GET";
            request.Headers.Add("Cookie", _COOKIES);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            string url = response.ResponseUri.AbsoluteUri;
            StreamReader reader = new StreamReader(response.GetResponseStream());
            string content = reader.ReadToEnd();
            if (content == "OK")
            {
                trytimes = 0;
                return Get2ndRequest(mblno);
            }
            else if (content== "CENABLE")
            {
                if (trytimes>3)
                {
                    return "error try " + trytimes + " times";
                }
                else
                {
                    trytimes++;
                    return GetWHLData(mblno, code);
                }
                
            }
            else
            {
                return "错误:场站请求失败，请稍后重试！";
            }
        }

        public string Get2ndRequest(string mblno)
        {
            string timeTemp = ConvertDateTimeInt(DateTime.Now).ToString(); ;
            string whlURL = "http://www.yydy.com/dyxt/Query/ExportByBill.aspx?s_no=" + mblno;
            WebRequest request = WebRequest.Create(whlURL);
            request.Method = "GET";
            request.Headers.Add("Cookie", _COOKIES);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            string url = response.ResponseUri.AbsoluteUri;
            StreamReader reader = new StreamReader(response.GetResponseStream());
            string content = reader.ReadToEnd();

            return content;
        }

        public string getVerificationCode()
        {
            _TimeTemp = ConvertDateTimeInt(DateTime.Now).ToString();
            HttpItem item = new HttpItem()
            {
                URL = "http://www.yydy.com/dyxt/BasicService/CreateCheckCode.aspx?" + _TimeTemp,
                Method = "get",//URL     可选项 默认为Get   
                ResultType = ResultType.Byte
            };
            HttpResult result = http.GetHtml(item);
            Bitmap bitmap = BytesToBitmap(result.ResultByte);
            bitmap = unNoise(bitmap, 0);

            Bitmap bm2 = new Bitmap(bitmap.Width, bitmap.Height);
            Graphics g = Graphics.FromImage(bm2);
            g.DrawImageUnscaled(bitmap, 0, 0);
            string guid = Guid.NewGuid().ToString();

            string path = HttpRuntime.AppDomainAppPath.ToString() + "qdporttemp\\";
            string filename = path + guid + ".png";
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            bm2.Save(filename);
            //调用百度云文字识别
            OcrDemo ocr = new OcrDemo();
            JToken o = ocr.GeneralBasic(filename);
            File.Delete(filename);
            var errorMsg = o.Value<string>("error_msg");
            var wordsNum = o.Value<int>("words_result_num");
            if (String.IsNullOrEmpty(errorMsg))
            {
                if (wordsNum > 0)
                {
                    var txts = from p in (JArray)o.Root["words_result"] select (string)p["words"];

                    string words = txts.First();
                    _COOKIES = result.Cookie;
                    return words;

                }
                return getVerificationCode();
            }
            return errorMsg;
        }

        #region 图像处理部分
        public static long ConvertDateTimeInt(System.DateTime time)
        {
            //double intResult = 0;
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1, 0, 0, 0, 0));
            //intResult = (time- startTime).TotalMilliseconds;
            long t = (time.Ticks - startTime.Ticks) / 10000; //除10000调整为13位
            return t;
        }

        public static Bitmap BytesToBitmap(byte[] Bytes)
        {
            MemoryStream stream = null;
            try
            {
                stream = new MemoryStream(Bytes);
                return new Bitmap((Image)new Bitmap(stream));
            }
            catch (ArgumentNullException ex)
            {
                throw ex;
            }
            catch (ArgumentException ex)
            {
                throw ex;
            }
            finally
            {
                stream.Close();
            }
        }
        private Bitmap unNoise(Bitmap bmpOut, int type)
        {
            UnCodebase imageNoise = new UnCodebase(bmpOut);
            //灰度处理
            bmpOut = imageNoise.ToGray();
            imageNoise = new UnCodebase(bmpOut);
            //得到阈值
            int grayvalue = imageNoise.GetDgGrayValue();
            //降噪
            if (type == 0)
                bmpOut = imageNoise.ClearNoise(grayvalue);
            else
                bmpOut = imageNoise.ClearNoise(grayvalue, 3);
            imageNoise = new UnCodebase(bmpOut);
            bmpOut = imageNoise.ConvertTo1Bpp1();
            imageNoise = new UnCodebase(bmpOut);
            bmpOut = imageNoise.Sharpen(1);
            return bmpOut;
        }
        #endregion
    }


}