using System;
using System.Collections.Generic;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Text;
using System.Text.RegularExpressions;
using System.Net;
using System.Reflection;
using System.ComponentModel;
using System.Web.UI.WebControls;

namespace MyWeb
{
    public class function : System.Web.UI.Page
    {        
        public function()
        {
            //
            // TODO: 在這裡新增建構函式邏輯
            //
        }

        public string randCode(int count)
        {
            //產生驗證碼		
            Random rnd = new Random(Guid.NewGuid().GetHashCode());
            string[] code = {
			"1",
			"2",
			"3",
			"4",
			"5",
			"6",
			"7",
			"8",
			"9",
			"a",
			"b",
			"c",
			"d",
			"e",
			"f",
			"g",
			"h",
			"i",
			"j",
			"k",
			"m",
			"n",
			"p",
			"q",
			"r",
			"s",
			"t",
			"u",
			"v",
			"w",
			"x",
			"y",
			"z"
		};
            string rnd_code = null;
            //產生10碼
            for (int i = 1; i <= count; i++)
            {
                rnd_code += "" + code[rnd.Next(0, code.Length - 1)];
            }
            return rnd_code;
        }

        public string randKey(int count)
        {
            //產生驗證碼		
            Random rnd = new Random(Guid.NewGuid().GetHashCode());
            string[] code = {
             "0","1","2","3","4","5","6","7","8","9",
            "a","b","c","d","e","f","g","h","i", "j","k","l","m", "n", "o","p","q","r","s","t","u","v","w","x","y","z",
            "A","B","B","D","E","F","G","H","I", "J","K","L","M", "N", "O","P","Q","R","S","T","U","V","W","X","Y","Z",
            "+","/"
        };
            string rnd_code = null;
            //產生10碼
            for (int i = 1; i <= count; i++)
            {
                rnd_code += "" + code[rnd.Next(0, code.Length - 1)];
            }
            return rnd_code;
        }

        public bool IsNumeric(object Expression)
        {
            bool isNum;
            double retNum;
            isNum = Double.TryParse(Convert.ToString(Expression), System.Globalization.NumberStyles.Any, System.Globalization.NumberFormatInfo.InvariantInfo, out retNum);
            return isNum;
        }

        public bool isDate(object chkString)
        {
            DateTime dt;
            return DateTime.TryParse(Convert.ToString(chkString), out dt);
        }

        public DateTime ValDate(object Expression)
        {
            DateTime _DateTime = Convert.ToDateTime(Expression);
            return _DateTime;
        }


        public int Val(object Expression)
        {
            int _Int = 0;
            if (IsNumeric(Expression))
            {
                _Int = Convert.ToInt32(Expression.ToString().Replace(",", ""));
            }
            return _Int;
        }

        public float ValFloat(object Expression)
        {
            float _Int = 0;
            if (!isStrNull(Expression))
            {
                _Int = Convert.ToSingle(ValString(Expression).Replace(",", ""));
            }
            return _Int;
        }

        public string ValMoney(object Expression, int DecimalLength = 2)   //千分位，預設最多到小數點第2位
        {
            string format = "N0";
            string[] m = ValString(Expression).Replace(",", "").Split('.');
            if (ValString(Expression).IndexOf(".") > -1)
            {
                int ML = (m[m.Length - 1].Length > DecimalLength ? DecimalLength : m[m.Length - 1].Length);
                if (!isStrNull(m[m.Length - 1])) { format = "N" + ML.ToString(); }
            }
            return ValFloat(Expression).ToString(format);
        }

        public string ValString(object Expression)
        {
            string _String = "";
            _String = Convert.ToString(Expression);
            return _String;
        }

        public string ValMoneyCh(object Expression)
        {
            string price = Expression.ToString().Split('.')[0];  //去除小數點
            string i = price.Replace(",", "");  //去除千分位

            string[] numc_arr = ("零,壹,貳,參,肆,伍,陸,柒,捌,玖").Split(',');
            string[] unic_arr = (",拾,佰,仟").Split(',');
            string[] unic1_arr = ("元整,萬,億,兆,京").Split(',');

            int c0 = 0;
            List<string> str = new List<string>();
            do
            {
                int aa = 0;
                int c1 = 0;
                string s = "";
                //取最右邊四位數跑迴圈,不足四位就全取
                int lan = (i.Length >= 4 ? 4 : i.Length);
                int j = Convert.ToInt32(i.Substring(i.Length - lan, lan));
                while (j > 0)
                {
                    int k = j % 10; //餘數
                    if (k > 0) { aa = 1; s = numc_arr[k] + unic_arr[c1] + s; }
                    else if (k == 0 && aa == 1) { s = "0" + s; }
                    j = j / 10;   //商
                    c1++;
                }
                //轉成中文後丟入陣列,全部為零不加單位
                str.Add((s == "" ? "" : s + unic1_arr[c0]));
                //計算剩餘字串長度
                int count_len = i.Length - 4;
                i = (count_len > 0 ? i.Substring(0, count_len) : "");
                c0++;
            } while (!string.IsNullOrEmpty(i));

            string chstring = "";
            while (str.Count > 0) { chstring += str[str.Count - 1]; str.Remove(str[str.Count - 1]); }

            string pattern = "0+";
            string replacement = "零";
            Regex rgx = new Regex(pattern);
            string result = rgx.Replace(chstring, replacement);

            return result;

        }

        public string Left(object Expression, int Length)
        {
            string str = "";
            str = ValString(Expression);
            if (Length > str.Length) { Length = str.Length; }
            str = str.Substring(0, Length);
            return str;
        }

        public string Right(object Expression, int Length)
        {
            string str = "";
            str = ValString(Expression);
            int startIndex = str.Length - Length;
            if (startIndex < 0)
            {
                startIndex = 0;
                Length = str.Length;
            }
            str = str.Substring(startIndex, Length);
            return str;
        }

        public bool isStrNull(object value)
        {
            return (value == null || value == DBNull.Value || Convert.ToString(value) == "" ? true : false);
        }

        //截字
        public string cut_str(string str, int limit)
        {
            return str;   //不截字，避免顏文字之類的圖在viewstate會出錯
            MatchCollection findCount;
            string Based = "[\u0080-\uFFFF]";
            //中日韓3byte以上的字符
            string tmp = null;
            int j = 0;
            for (int i = 0; i < str.Length; i++)
            {
                findCount = Regex.Matches(str.Substring(i, 1), Based, RegexOptions.Compiled);
                //找str裡面是否有Based指定的字 
                if (findCount.Count == 0)
                {
                    j += 1;
                }
                else
                {
                    j += 2;
                    //一個中文字占兩個
                }
                if (j <= limit)
                {
                    tmp = tmp + str.Substring(i, 1);
                }
                else
                {
                    i -= 1;
                    if (i < str.Length)
                    {
                        if (!isStrNull(str.Substring(i, 1).Trim()))
                        {
                            //捨棄不完整的英文單字或數字
                            int n = 0;
                            for (int t = tmp.Length - 1; t >= 0; t--)
                            {
                                n++;
                                if (Regex.Matches(tmp.Substring(t, 1), Based, RegexOptions.Compiled).Count > 0)  //中文字
                                {
                                    tmp = Left(tmp, tmp.Length - n + 1);
                                    break;
                                }
                                else if (isStrNull(tmp.Substring(t, 1).Trim()))
                                {
                                    tmp = Left(tmp, tmp.Length - n);
                                    break;
                                }
                            }
                        }
                        tmp = tmp + "...";
                    }
                    break;
                }
            }
            return tmp;
        }

        public enum msgIcon : int
        {
            none = 0,
            success = 1,
            error = 2,
            warning = 3,
            info = 4,
            question = 5
        }

        public void ScriptMsg(string txt, string url="", msgIcon icon= msgIcon.none)
        {
            ScriptManager.RegisterClientScriptBlock((Page)HttpContext.Current.Handler, typeof(string), "js", "msgbox('" + txt + "','" + (icon != msgIcon.none ? icon.ToString() : "") + "','" + url + "');", true);
        }

        public void ScriptMsgTop(string txt, msgIcon icon)
        {
            ScriptManager.RegisterClientScriptBlock((Page)HttpContext.Current.Handler, typeof(string), "js", "msgtop('" + txt + "','" + (icon != msgIcon.none ? icon.ToString() : "") + "');", true);
        }


        public void ScriptJS(string script)
        {
            ScriptManager.RegisterClientScriptBlock((Page)HttpContext.Current.Handler, typeof(string), "js", script, true);
        }

        public void ScriptMsg2(string txt, string url = "", msgIcon icon = msgIcon.none)
        {
            ScriptManager.RegisterStartupScript(Page, Page.GetType(), "init", "msgbox('" + txt + "','" + (icon != msgIcon.none ? icon.ToString() : "") + "','" + url + "');", true);
        }

        public void ScriptMsgTop2(string txt, msgIcon icon)
        {
            ScriptManager.RegisterStartupScript(Page, Page.GetType(), "init", "msgtop('" + txt + "','" + (icon != msgIcon.none ? icon.ToString() : "") + "');", true);
        }

        public void ScriptJS2(string script)
        {
            ScriptManager.RegisterStartupScript(Page, Page.GetType(), "init", script, true);
        }

        public string br(string str)
        {
            return str.Replace(Convert.ToString((char)10), "<br>").Replace(Convert.ToString((char)13), "");
        }


        //日期格式
        public string datetype(string dtmp)
        {
            if (dtmp != null)
            {
                System.DateTime d = ValDate(dtmp);
                return d.ToString("yyyy-MM-dd");
            }
            else
            {
                return null;
            }
        }

        public string datetype(string dtmp, string format)
        {
            if (dtmp != null)
            {
                System.DateTime d = ValDate(dtmp);
                return d.ToString(format);
            }
            else
            {
                return null;
            }
        }

        string allowReqAtt = System.Configuration.ConfigurationManager.AppSettings["allowReqAtt"].ToString();
        public bool AllowReq(string name)
        {
            if (!isStrNull(allowReqAtt))
            {
                string[] qns = allowReqAtt.Split(',');
                foreach (string qn in qns)
                    if (qn.ToLower() == name.ToLower())
                        return true;
                return false;
            }
            return true;
        }

        //傳回GET值並拿掉不要的，回傳格式為?xxxx=xxxx&yyyy=yyyy
        public string rtnQueryString(string noUseQuery)
        {
            string new_query = "";
            if (HttpContext.Current.Request.Url.AbsoluteUri.Split('?').Length == 2)
            {
                string[] query = HttpContext.Current.Request.Url.AbsoluteUri.Split('?')[1].Split('&');
                for (int i = 0; i < query.Length; i++)
                {
                    string[] qs = query[i].Split('=');
                    if (qs.Length == 2 && qs[0].ToLower() != noUseQuery.ToLower())
                    {
                        if (AllowReq(qs[0]))
                            new_query += (new_query == "" ? "?" : "&") + qs[0] + "=" + Server.UrlEncode(Server.UrlDecode(qs[1]));
                    }
                }
            }
            return new_query;
        }

        public string rtnQueryString(Array noUseQuery)
        {
            string new_query = "";
            if (HttpContext.Current.Request.Url.AbsoluteUri.Split('?').Length == 2)
            {
                string[] query = HttpContext.Current.Request.Url.AbsoluteUri.Split('?')[1].Split('&');
                for (int i = 0; i < query.Length; i++)
                {
                    string[] qs = query[i].Split('=');
                    if (qs.Length == 2)
                    {
                        bool setAdd = true;
                        foreach (string nq in noUseQuery)
                        {
                            if (qs[0].ToLower() == nq.ToLower())
                            {
                                setAdd = false;
                                break;
                            }
                        }

                        if (setAdd)
                        {
                            if (AllowReq(qs[0]))
                                new_query += (new_query == "" ? "?" : "&") + qs[0] + "=" + Server.UrlEncode(Server.UrlDecode(qs[1]));
                        }
                    }

                }
            }
            return new_query;
        }

        public string UrlHost()
        {
            string url = (IsHttps() ? "https://" : "http://") 
                //+ HttpContext.Current.Request.Url.Host 
                + Request.ServerVariables["HTTP_HOST"]
                + VirtualPathUtility.ToAbsolute("~/");
            return url;
        }

        public string UrlAddr()
        {
            string url = (IsHttps() ? "https://" : "http://") + HttpContext.Current.Request.Url.Host + HttpContext.Current.Request.Url.AbsolutePath;
            return url;
        }

        public static bool IsHttps()
        {
            return HttpContext.Current.Request.IsSecureConnection;
        }

        #region 列舉

        public string GetEnumsDescription(Enum value)
        {
            FieldInfo fi = value.GetType().GetField(value.ToString());
            DescriptionAttribute[] attributes = (DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);
            return attributes.Length > 0 ? attributes[0].Description : value.ToString();
        }

        public void InitEnumsOptions<T>(Control obj)
        {
            foreach (object value in Enum.GetValues(typeof(T)))
                if (obj is DropDownList)
                    ((DropDownList)obj).Items.Add(new ListItem(GetEnumsDescription((Enum)value), ((int)value).ToString()));
                else if (obj is RadioButtonList)
                    ((RadioButtonList)obj).Items.Add(new ListItem(GetEnumsDescription((Enum)value), ((int)value).ToString()));
                else if (obj is CheckBoxList)
                    ((CheckBoxList)obj).Items.Add(new ListItem(GetEnumsDescription((Enum)value), ((int)value).ToString()));
        }

        #endregion


        public class WreqInfo
        {
            public string log = "";
            public string data = "";
        }

        public enum Method { POST, GET, PUT, DELETE }
        
        public WreqInfo WRequest(string URL, Method method, string POSTdata, string Referer = "", string UserAgent = "")
        {
            WreqInfo responseData = new WreqInfo();

            try
            {
           
                HttpWebRequest hwrequest = (HttpWebRequest)WebRequest.Create(URL);
                hwrequest.Accept = "*/*";
                hwrequest.AllowAutoRedirect = true;
                hwrequest.Timeout = 5000;
                hwrequest.Method = method.ToString();

                if (!isStrNull(UserAgent))
                    hwrequest.UserAgent = UserAgent;
                else
                    hwrequest.UserAgent = "http_requester/0.1";

                if (!isStrNull(Referer))
                    hwrequest.Referer = Referer;

                if (URL.ToLower().IndexOf("https://") > -1)
                {
                    ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
                    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
                    hwrequest.ClientCertificates.Add(new System.Security.Cryptography.X509Certificates.X509Certificate());
                }
              

                if (hwrequest.Method == "POST")
                {
                    hwrequest.ContentType = "application/x-www-form-urlencoded";
                    //ASCIIEncoding encoding = new ASCIIEncoding();
                    UTF8Encoding encoding = new UTF8Encoding();
                    byte[] postByteArray = encoding.GetBytes(POSTdata);
                    hwrequest.ContentLength = postByteArray.Length;
                    Stream postStream = hwrequest.GetRequestStream();
                    postStream.Write(postByteArray, 0, postByteArray.Length);
                    postStream.Close();
                }
                HttpWebResponse hwresponse = (HttpWebResponse)hwrequest.GetResponse();
                if (hwresponse.StatusCode == HttpStatusCode.OK)
                {
                    StreamReader responseStream = new StreamReader(hwresponse.GetResponseStream());
                    responseData.data = responseStream.ReadToEnd();
                }
                hwresponse.Close();
            }
            catch (Exception ex)
            {
                responseData.log = ex.Message;
            }

            return responseData;
        }

        #region 繁簡轉換

        public static class ChineseConverter
        {
            internal const int LOCALE_SYSTEM_DEFAULT = 0x0800;
            internal const int LCMAP_SIMPLIFIED_CHINESE = 0x02000000;
            internal const int LCMAP_TRADITIONAL_CHINESE = 0x04000000;

            [System.Runtime.InteropServices.DllImport("kernel32", CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)]
            internal static extern int LCMapString(int Locale, int dwMapFlags, string lpSrcStr, int cchSrc, [System.Runtime.InteropServices.Out] string lpDestStr, int cchDest);

            public static string ToSimplified(string pSource)
            {
                String tTarget = new String(' ', pSource.Length);
                int tReturn = LCMapString(LOCALE_SYSTEM_DEFAULT, LCMAP_SIMPLIFIED_CHINESE, pSource, pSource.Length, tTarget, pSource.Length);
                return tTarget;
            }

            public static string ToTraditional(string pSource)
            {
                String tTarget = new String(' ', pSource.Length);
                int tReturn = LCMapString(LOCALE_SYSTEM_DEFAULT, LCMAP_TRADITIONAL_CHINESE, pSource, pSource.Length, tTarget, pSource.Length);
                return tTarget;
            }
        }

        #endregion

        #region 讀檔

        public string ReadFileContent(string path)
        {
            string text = "";
            try
            {
                if (path.IndexOf("~/") > -1) { path = Server.MapPath(path); }

                Stream stream = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read);
                StreamReader objReader = new StreamReader(stream);
                text = objReader.ReadToEnd();
                objReader.Close();
                objReader.Dispose();
                stream.Close();
                stream.Dispose();
            }
            catch (Exception)
            {
                //throw;
            }
            return text;
        }

        #endregion

    }
}