using System;

using System.IO;

using System.Net;

using System.Text;

using System.Security.Cryptography;

public class Program

{

    public static string baseurl = "https://trippublic.dcsplus.net/dynapack/clients/bitusi/public/index.php";

    public static string appid = "developer";

    public static string skey = "developer321";

    public static void Main()

    {   

        string token = Token();

        string requestData = @"{

              'serviceType': 'hotel',

              'amount': '73.55',

              'currency': 'EUR',

              'hotelId': '7813',

              'adultsNr': '1',

              'childrenNr': '0',

              'checkin': '2019-03-23',

              'checkout': '2019-03-24',

              'resultCode': 'HOTEL-WS-CSBT-9947dedb798279ce4e7b59ec761ceb30',

              'packageCode': '7813:0:6:dbe24bea1df9cb442da34fd3c25366f6',

              'comment': '',

              'room': [

                {

                  'adults': [

                    {

                      'title': 'Mr',

                      'firstname': 'John',

                      'lastname': 'Doe',

                      'email': 'john.doe@gmall.com',

                      'phone': '0756912347'

                    }

                  ],

                  'code': '6',

                  'price': '',

                  'currency': '',

                  'name': 'Basic+Quadruple+Room,+Shared+Bathroom',

                  'board': '',

                  'packageCode': '0',

                  'status': 'OK'

                }

              ]

            }";

        // request data sorted first level only used for generating hash

        string sortedRequestData = @"{

               'adultsNr': '1',

               'amount': '73.55',

               'checkin': '2019-03-23',

               'checkout': '2019-03-24',

               'childrenNr': '0',

               'comment': '',

               'currency': 'EUR',

               'hotelId': '7813',

               'packageCode': '7813:0:6:dbe24bea1df9cb442da34fd3c25366f6',

               'resultCode': 'HOTEL-WS-CSBT-9947dedb798279ce4e7b59ec761ceb30',

               'room': [

                   {

                       'adults': [

                           {

                               'title': 'Mr',

                               'firstname': 'John',

                               'lastname': 'Doe',

                               'email': 'john.doe@gmall.com',

                               'phone': '0756912347'

                           }

                       ],

                       'code': '6',

                       'price': '',

                       'currency': '',

                       'name': 'Basic+Quadruple+Room,+Shared+Bathroom',

                       'board': '',

                       'packageCode': '0',

                       'status': 'OK'

                   }

               ],

               'serviceType': 'hotel'

            }";

        string sortedRequestDataHTTPQuery = "adultsNr=1&amount=73.55&checkin=2019-03-23&checkout=2019-03-24&childrenNr=0&comment=&currency=EUR&hotelId=7813&packageCode=7813:0:6:dbe24bea1df9cb442da34fd3c25366f6&resultCode=HOTEL-WS-CSBT-9947dedb798279ce4e7b59ec761ceb30&room[0][adults][0][title]=Mr&room[0][adults][0][firstname]=John&room[0][adults][0][lastname]=Doe&room[0][adults][0][email]=john.doe@gmall.com&room[0][adults][0][phone]=0756912347&room[0][code]=6&room[0][price]=&room[0][currency]=&room[0][name]=Basic+Quadruple+Room,+Shared+Bathroom&room[0][board]=&room[0][packageCode]=0&room[0][status]=OK&serviceType=hotel";

        string orderUrl = baseurl + "/orders/1226/services?timestamp=" + DateTimeOffset.UtcNow.ToUnixTimeSeconds() + "&applicationId=" + appid;

        string orderHash = Hash(orderUrl + "&" + sortedRequestDataHTTPQuery);

        token = "9ab66f3b125a6df55a1fba01ded852808bfcaccf";

        requestData = "{\"serviceType\":\"hotel\",\"amount\":\"73.55\",\"currency\":\"EUR\",\"hotelId\":\"7813\",\"adultsNr\":\"1\",\"childrenNr\":\"0\",\"checkin\":\"2019-03-23\",\"checkout\":\"2019-03-24\",\"resultCode\":\"HOTEL-WS-CSBT-9947dedb798279ce4e7b59ec761ceb30\",\"packageCode\":\"7813:0:6:dbe24bea1df9cb442da34fd3c25366f6\",\"comment\":\"\",\"room\":[{\"adults\":[{\"title\":\"Mr\",\"firstname\":\"John\",\"lastname\":\"Doe\",\"email\":\"john.doe@gmall.com\",\"phone\":\"0756912347\"}],\"code\":\"6\",\"price\":\"\",\"currency\":\"\",\"name\":\"Basic+Quadruple+Room,+Shared+Bathroom\",\"board\":\"\",\"packageCode\":\"0\",\"status\":\"OK\"}]}";

        string orderResponse = Post(orderUrl, orderHash, token, requestData);

        Console.WriteLine("url: " + orderUrl);

        Console.WriteLine("hash url: " + orderUrl + sortedRequestDataHTTPQuery);

        Console.WriteLine("token: " + token);

        Console.WriteLine("hash: " + orderHash);

        Console.WriteLine("response: " + orderResponse);

        Console.WriteLine("Hello World" + DateTimeOffset.UtcNow.ToUnixTimeSeconds());

    }

    public static string Hash(string rurl)

    {

        //https://trippublic.dcsplus.net/dynapack-documentation/php/authentication.php?applicationId=developer&secretKey=developer321&endpoint=/en/authentication/token/generate

        string hash = "";

        SHA1 sha = new SHA1CryptoServiceProvider(); 

        // This is one implementation of the abstract class SHA1.

        Encoding encode = System.Text.Encoding.GetEncoding("utf-8");

        byte[] buffer = encode.GetBytes(rurl + skey);

        byte[] result = sha.ComputeHash(buffer);

        hash = HexStringFromBytes(result);

        return hash;

    }

    public static string Token()

    {

        string url = baseurl + "/en/authentication/token/generate?timestamp=" + DateTimeOffset.UtcNow.ToUnixTimeSeconds() + "&applicationId=" + appid;

        string token = "";

        string hash = Hash(url);

        token = Get(url, hash);

        return token;

    }

    public static string Get(string url, string hash)

    {

        // Creates an HttpWebRequest with the specified URL. 

        HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url); 

        myHttpWebRequest.Headers["x-hash"] = hash;

        // Sends the HttpWebRequest and waits for the response.         

        HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse(); 

        // Gets the stream associated with the response.

        Stream receiveStream = myHttpWebResponse.GetResponseStream();

        Encoding encode = System.Text.Encoding.GetEncoding("utf-8");

        // Pipes the stream to a higher level stream reader with the required encoding format. 

        StreamReader readStream = new StreamReader( receiveStream, encode );

        return readStream.ReadToEnd();

    }

    public static string Post(string url, string hash, string token, string jsonData)

    {

        try

        {

            // Creates an HttpWebRequest with the specified URL. 

            HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url); 

            myHttpWebRequest.Headers["x-hash"] = hash;

            myHttpWebRequest.Headers["Authorization"] = token;

            myHttpWebRequest.ContentType = "application/json";

            myHttpWebRequest.Method = "POST";

            using (var streamWriter = new StreamWriter(myHttpWebRequest.GetRequestStream()))

            {

                streamWriter.Write(jsonData);

                streamWriter.Flush();

                streamWriter.Close();

            }

            // Sends the HttpWebRequest and waits for the response.         

            HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse(); 

            // Gets the stream associated with the response.

            Stream receiveStream = myHttpWebResponse.GetResponseStream();

            Encoding encode = System.Text.Encoding.GetEncoding("utf-8");

            // Pipes the stream to a higher level stream reader with the required encoding format. 

            StreamReader readStream = new StreamReader( receiveStream, encode );

​

            return readStream.ReadToEnd();

        }

        catch (WebException e)

        {

            string text = "";

            using (WebResponse response = e.Response)

            {

                HttpWebResponse httpResponse = (HttpWebResponse) response;

                Console.WriteLine("Error code: {0}", httpResponse.StatusCode);

                using (Stream data = response.GetResponseStream())

                using (var reader = new StreamReader(data))

                {

                    text = reader.ReadToEnd();

                    //Console.WriteLine(text);

                }

            }

            return text;

        }

    }

    public static string HexStringFromBytes(byte[] bytes)

    {

        var sb = new StringBuilder();

        foreach (byte b in bytes)

        {

            var hex = b.ToString("x2");

            sb.Append(hex);

        }

        return sb.ToString();

    }

    public static string Postaa(string uri, string data, string contentType, string method = "POST")

    {

        byte[] dataBytes = Encoding.UTF8.GetBytes(data);

​

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);

        request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;

        request.ContentLength = dataBytes.Length;

        request.ContentType = contentType;

        request.Method = method;

​

        using(Stream requestBody = request.GetRequestStream())

        {

            requestBody.Write(dataBytes, 0, dataBytes.Length);

        }

​

        using(HttpWebResponse response = (HttpWebResponse)request.GetResponse())

        using(Stream stream = response.GetResponseStream())

        using(StreamReader reader = new StreamReader(stream))

        {

            return reader.ReadToEnd();

        }

    }

}

​

​