Viber dummy Bot

README.txt

...So... let me give it to you straight:
   1.  Create a (web form) page ViberDummyBot.aspx with a single line as shown below.
   2.  Copy the content of 'ViberDummyBot.aspx.cs' below (to your own *.cs file).
   3.  Replace the value in 'paAuthenticationToken' with the token of your account.
   4.  Call set web hook (https://chatapi.viber.com/pa/set_webhook) with the token of your account and your URL address of ViberDummyBot.aspx (Must have trusted ssl certificate)


That's it. U got a dummy bot that reply to any text you send it (With empty Keyboard) from Viber application

ViberDummyBot.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ViberDummyBot.aspx.cs" Inherits="ViberDummyBot" %>

ViberDummyBot.aspx.cs

using System;
using System.Collections.Generic;
using System.Net;
using System.Text;



public partial class ViberDummyBot : System.Web.UI.Page
{
    const string paAuthenticationToken = "YOUR_TOKEN_HERE";
    const string viberUrlForSendingMessagesTo = "https://chatapi.viber.com/pa/send_message";


    //---- Input message structure start: ----
    public class SenderJsonNoId
    {//Json mapping :
        public string name;
        public string avatar;
    };
    public class SenderJson
    {//Json mapping :
        public string id;
        public string name;
        public string avatar;
        public string country;
        public string language;
        public string api_version;
    };

    public class locationJson
    {
        public float lat;
        public float lon;
    };
    public class contactJson
    {
        public string name;
        public string phone_number;
    };
    public class receivedMessageJson
    {//Json mapping :
        public string type;
        public string text;
        public string media;
        public locationJson location;
        public string tracking_data;
        public contactJson contact;
    };

    //---- Input message structure end ----


    //---- outgoing message structure start: ----

    public class KeyboardButtonsJson
    {
        public string ActionType;
        public string ActionBody;
        public string BgColor;
        public int Columns;
        public int Rows;
        public string Text;
        public string TextHAlign;
        public string Image;
        public string TextSize;
        public int TextOpacity;

        public KeyboardButtonsJson(string actionType, string actionBody, string backgroundColor, string text, string textAlign, 
            int buttonColumns = 6, int buttonsRows = 1, string ImageUrl = null, bool isLargeTextSize = false, int textOpacity = 100)
        {
            const int maxNumColums = 6;
            const int maxNumRows = 2;
            buttonColumns = ((buttonColumns > 0) && (buttonColumns<maxNumColums)) ? buttonColumns : maxNumColums;
            buttonsRows   = ((buttonsRows > 0)   && (buttonsRows<maxNumColums))   ? buttonsRows : maxNumRows;

            this.Image = ImageUrl;
            this.ActionType = actionType;
            this.ActionBody = actionBody;
            this.BgColor = backgroundColor;
            this.Text = text;
            this.TextHAlign = textAlign;//possible values: "left", "center", "right"
            this.Columns = buttonColumns;
            this.Rows = buttonsRows;
            this.TextSize =  isLargeTextSize ? "large" : "regular";// (can also be "small")
            this.TextOpacity = ( (textOpacity>=0) && (textOpacity<=100) ) ? textOpacity : 100;
        }
    };


    public class KeyboardJson
    {
        public string Type;
        public List<KeyboardButtonsJson> Buttons;

        public KeyboardJson(List<KeyboardButtonsJson> buttons, string queryForMedicalSearch)
        {
            this.Type = "keyboard";
            this.Buttons = buttons;
        }
    };


    public class SentMessageJson
    {
        public string auth_token;
        public string receiver;
        public string tracking_data;
        public KeyboardJson keyboard;
        public string text;
        public string type;
        public string media;
        public SenderJsonNoId sender;

        public SentMessageJson(string paAuthenticationToken, string receiver, string tracking_data, string senderName, string textToSend)
        {
            this.auth_token = paAuthenticationToken;
            this.receiver = receiver;
            this.tracking_data = (null == tracking_data) ? "" : tracking_data;

            this.sender = new SenderJsonNoId();
            this.sender.name = senderName;
            this.sender.avatar = "https://avatars0.githubusercontent.com/u/9072931?v=3&s=40";

            this.media = "";
            this.type = "text";
            this.text = textToSend;
         }
    };

    //---- outgoing message structure end.   ----

    private string getJsonString(System.IO.Stream postedData)
    {
        byte[] readBytes = new byte[postedData.Length];
        postedData.Read(readBytes, 0, (int)postedData.Length);
        string readString = System.Text.Encoding.UTF8.GetString(readBytes).TrimEnd('\0');
        return readString;
    }

    private void replyEmptyResponse()
    {
        Response.Write("{}");
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        string readString = getJsonString(Request.GetBufferlessInputStream());

        var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
        Dictionary<string, object> dict = serializer.Deserialize<Dictionary<string, object>>(readString);
        if(null == dict)
        {
            replyEmptyResponse();
            return;
        }
            
        object eventTypeOject;
        if (!dict.TryGetValue("event", out eventTypeOject))
        {
            replyEmptyResponse();
            return;//ERROR
        }
            
        string eventType = eventTypeOject.ToString().ToLower();
        if (eventType.Equals("message"))
        {
            object senderValue;
            if (!dict.TryGetValue("sender", out senderValue))
            {
                replyEmptyResponse();
                return;//ERROR
            }                
            SenderJson SenderObject = serializer.ConvertToType<SenderJson>(senderValue);
            if (null == SenderObject)
            {
                replyEmptyResponse();
                return;//TODO: ERROR
            }

            object sentMessage;
            if (dict.TryGetValue("message", out sentMessage))
            {//Send reply message to user:
                receivedMessageJson messageObject = serializer.ConvertToType<receivedMessageJson>(sentMessage);

                // Get received message text and send it back to the sender:
                String arrivingText = "Sending you back " + messageObject.text;
                SentMessageJson autoSentReplyToUser = new SentMessageJson(paAuthenticationToken, SenderObject.id, messageObject.tracking_data, SenderObject.name, arrivingText);
                string jsonStr = serializer.Serialize(autoSentReplyToUser);
                var httpWebRequest = (HttpWebRequest)WebRequest.Create(viberUrlForSendingMessagesTo);
                var data = Encoding.UTF8.GetBytes(jsonStr);
                httpWebRequest.Method = "POST";
                httpWebRequest.ContentType = "application/x-www-form-urlencoded";
                httpWebRequest.ContentLength = data.Length;
                using (var stream = httpWebRequest.GetRequestStream())
                {
                    stream.Write(data, 0, data.Length);

                }
            }
        }

        replyEmptyResponse();
    }
}

how can i write like this in mvc app??
i have problem with webhook.....

Perfect example

Easy organization of webcam ngrok.com

Please, explain this , give example
Call set web hook (https://chatapi.viber.com/pa/set_webhook) with the token of your account and your URL address of ViberDummyBot.aspx (Must have trusted ssl certificate)

Do the have decision for desktop application?