using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;

namespace CZFW.Core
{
    public class Utility
    {

        public static TType Parse<TType>(object value, TType defaultValue = default(TType))
        {
            if (value == null || value == DBNull.Value || string.IsNullOrWhiteSpace(value.ToString())) return defaultValue;
            Type type = typeof(TType);
            Type underlyingType = Nullable.GetUnderlyingType(type);
            return (TType)Convert.ChangeType(value, underlyingType ?? type);
        }
        public static long GetUnixTimeTick(DateTime? date = null)
        {
            if (date == null)
            {
                date = DateTime.Now;
            }
            var timespan = date.Value.Subtract(new DateTime(1970, 1, 1));
            return timespan.Ticks;
        }

        public static string GetNowStringForSql(DateTime? dateTime = null, string format = "yyyy/MM/dd hh:mm:ss")
        {
            var now = dateTime is null ? DateTime.Now : dateTime.Value;
            var nowStr = now.ToString(format);
            var res = $"'{nowStr}'";
            return res;
        }

        #region Get

        /// <summary>
        /// HTTP GET方式请求数据.
        /// </summary>
        /// <param name="url">URL.</param>
        /// <param name="headht"></param>
        /// <returns></returns>
        public static string HttpGet(string url, Hashtable headht = null)
        {
            HttpWebRequest request;
            //如果是发送HTTPS请求  
            if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
            {
                ServicePointManager.ServerCertificateValidationCallback = CheckValidationResult;
                request = WebRequest.Create(url) as HttpWebRequest;
                request.ProtocolVersion = HttpVersion.Version10;
            }
            else
            {
                request = WebRequest.Create(url) as HttpWebRequest;
            }
            request.Method = "GET";
            //request.ContentType = "application/x-www-form-urlencoded";
            request.Accept = "*/*";
            request.Timeout = 15000;
            request.AllowAutoRedirect = false;
            string responseStr;
            if (headht != null)
            {
                foreach (DictionaryEntry item in headht)
                {
                    request.Headers.Add(item.Key.ToString(), item.Value.ToString());
                }
            }
            var response = request.GetResponse();
            {
                StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                responseStr = reader.ReadToEnd();
                reader.Close();
            }
            return responseStr;
        }

        public static string HttpGet(string url, Encoding encodeing, Hashtable headht = null)
        {
            HttpWebRequest request;
            //如果是发送HTTPS请求  
            if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
            {
                ServicePointManager.ServerCertificateValidationCallback = CheckValidationResult;
                request = WebRequest.Create(url) as HttpWebRequest;
                request.ProtocolVersion = HttpVersion.Version10;
            }
            else
            {
                request = WebRequest.Create(url) as HttpWebRequest;
            }
            request.Method = "GET";
            //request.ContentType = "application/x-www-form-urlencoded";
            request.Accept = "*/*";
            request.Timeout = 15000;
            request.AllowAutoRedirect = false;
            string responseStr;
            if (headht != null)
            {
                foreach (DictionaryEntry item in headht)
                {
                    request.Headers.Add(item.Key.ToString(), item.Value.ToString());
                }
            }
            var response = request.GetResponse();
            {
                StreamReader reader = new StreamReader(response.GetResponseStream(), encodeing);
                responseStr = reader.ReadToEnd();
                reader.Close();
            }
            return responseStr;
        }

        #endregion

        private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
        {
            return true; //总是接受  
        }

        public static bool IsMobile(string userAgent)
        {
            string u = userAgent;
            Regex b = new Regex(@"(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|WindowsWechat", RegexOptions.IgnoreCase | RegexOptions.Multiline);
            Regex v = new Regex(@"1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-", RegexOptions.IgnoreCase | RegexOptions.Multiline);
            var res = b.IsMatch(u) || v.IsMatch(u.Substring(0, 4));
            return res;
        }

        public static bool IsWeChat(string userAgent)
        {
            if (userAgent == null)
                return false;
            return userAgent.ToLower().Contains("micromessenger");
        }

        public static (string fullBroswerName, string browserName, string ver) GetBrowserName(string userAgent)
        {

            string fullBrowserName, browserName, ver;
            browserName = string.Empty;
            ver = string.Empty;
            fullBrowserName = string.Empty;
            // IE
            string regexStr = @"msie (?<ver>[\d.]+)";
            Regex r = new Regex(regexStr, RegexOptions.IgnoreCase);
            Match m = r.Match(userAgent);
            if (m.Success)
            {
                browserName = "IE";
                ver = m.Groups["ver"].Value;
                fullBrowserName = string.Format("{0} {1}", browserName, ver);
                return (fullBrowserName, browserName, ver);
            }
            // Firefox
            regexStr = @"firefox\/([\d.]+)";
            r = new Regex(regexStr, RegexOptions.IgnoreCase);
            m = r.Match(userAgent);
            if (m.Success)
            {
                browserName = "IE";
                ver = m.Groups["ver"].Value;
                fullBrowserName = string.Format("{0} {1}", browserName, ver);
                return (fullBrowserName, browserName, ver);
            }
            // Chrome
            regexStr = @"chrome\/([\d.]+)";
            r = new Regex(regexStr, RegexOptions.IgnoreCase);
            m = r.Match(userAgent);
            if (m.Success)
            {
                browserName = "IE";
                ver = m.Groups["ver"].Value;
                fullBrowserName = string.Format("{0} {1}", browserName, ver);
                return (fullBrowserName, browserName, ver);
            }
            // Opera
            regexStr = @"opera.([\d.]+)";
            r = new Regex(regexStr, RegexOptions.IgnoreCase);
            m = r.Match(userAgent);
            if (m.Success)
            {
                browserName = "IE";
                ver = m.Groups["ver"].Value;
                fullBrowserName = string.Format("{0} {1}", browserName, ver);
                return (fullBrowserName, browserName, ver);
            }
            // Safari
            regexStr = @"version\/([\d.]+).*safari";
            r = new Regex(regexStr, RegexOptions.IgnoreCase);
            m = r.Match(userAgent);
            if (m.Success)
            {
                browserName = "IE";
                ver = m.Groups["ver"].Value;
                fullBrowserName = string.Format("{0} {1}", browserName, ver);
                return (fullBrowserName, browserName, ver);
            }
            return (fullBrowserName, browserName, ver);
        }

        public static string GetOSNameByUserAgent(string userAgent)
        {
            string osVersion = "未知";

            if (userAgent.Contains("NT 10.0"))
            {
                osVersion = "Windows 10";
            }
            else if (userAgent.Contains("NT 6.3"))
            {
                osVersion = "Windows 8.1";
            }
            else if (userAgent.Contains("NT 6.2"))
            {
                osVersion = "Windows 8";
            }
            else if (userAgent.Contains("NT 6.1"))
            {
                osVersion = "Windows 7";
            }
            else if (userAgent.Contains("NT 6.1"))
            {
                osVersion = "Windows 7";
            }
            else if (userAgent.Contains("NT 6.0"))
            {
                osVersion = "Windows Vista/Server 2008";
            }
            else if (userAgent.Contains("NT 5.2"))
            {
                if (userAgent.Contains("64"))
                    osVersion = "Windows XP";
                else
                    osVersion = "Windows Server 2003";
            }
            else if (userAgent.Contains("NT 5.1"))
            {
                osVersion = "Windows XP";
            }
            else if (userAgent.Contains("NT 5"))
            {
                osVersion = "Windows 2000";
            }
            else if (userAgent.Contains("NT 4"))
            {
                osVersion = "Windows NT4";
            }
            else if (userAgent.Contains("Me"))
            {
                osVersion = "Windows Me";
            }
            else if (userAgent.Contains("98"))
            {
                osVersion = "Windows 98";
            }
            else if (userAgent.Contains("95"))
            {
                osVersion = "Windows 95";
            }
            else if (userAgent.Contains("Mac"))
            {
                osVersion = "Mac";
            }
            else if (userAgent.Contains("Unix"))
            {
                osVersion = "UNIX";
            }
            else if (userAgent.Contains("Linux"))
            {
                osVersion = "Linux";
            }
            else if (userAgent.Contains("SunOS"))
            {
                osVersion = "SunOS";
            }
            return osVersion;
        }

        public static Tuple<string, IDictionary<string, string>> UrlToData(string url, string encoding = "UTF-8")
        {
            var res = new Tuple<string, IDictionary<string, string>>(string.Empty, new Dictionary<string, string>());
            if (string.IsNullOrWhiteSpace(url))
            {
                throw new ArgumentNullException($"UrlToData时URL格式错误, URL:{url}");
            }
            url = url.Trim();
            if (url.Contains("%"))
            {
                url = UrlDecode(url, encoding);
            }
            var uri = new Uri(url);
            var split = uri.Query.Split(new[] { '?', '&' }, StringSplitOptions.RemoveEmptyEntries);
            if (split.Length == 1)
                return new Tuple<string, IDictionary<string, string>>(url, new Dictionary<string, string>());
            //获取前面的URL地址
            var host = uri.Host;
            var paras = split.ToList();
            var pairs = new Dictionary<string, string>();
            foreach (var s in paras)
            {
                var idx = s.IndexOf('=');
                if (idx > 0)
                {
                    if (!pairs.ContainsKey(Uri.UnescapeDataString(s.Substring(0, idx))))
                        pairs.Add(Uri.UnescapeDataString(s.Substring(0, idx)), Uri.UnescapeDataString(s.Substring(idx + 1)));
                }
            }
            res = new Tuple<string, IDictionary<string, string>>(host, pairs);
            return res;
        }

        public static string UrlDecode(string str, string encoding = "UTF-8")
        {
            var res = HttpUtility.UrlDecode(str, Encoding.GetEncoding(encoding));
            res = res.Replace("\u0001", "");
            return res;
        }

        public static bool CheckMobileNumber(string phoneNumber)
        {
            if (string.IsNullOrWhiteSpace(phoneNumber))
                return false;
            return System.Text.RegularExpressions.Regex.IsMatch(phoneNumber, @"^[1]+[3,4,5,7,8]+\d{9}");
        }
    }
}