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ConnectionViewModel.cs
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ConnectionViewModel.cs
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using InSync.eConnect.APPSeCONNECT.API;
using InSync.eConnect.APPSeCONNECT.Helpers;
using InSync.eConnect.APPSeCONNECT.Storage;
using InSync.eConnect.APPSeCONNECT.Utils;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Windows;
using System.Windows.Input;
using System.Xml.Linq;
namespace InSync.eConnect.ZohoDesk
{
/// <summary>
/// Represents the ViewModel class for Credential window for the application
/// </summary>
public class ConnectionViewModel : ObservableObjectGeneric<ConnectionViewModel>, ICredential
{
#region Private Variables
private CredentialModel _credentialInfo;
ReturnMessage<bool> returnResult = new ReturnMessage<bool>();
private ApplicationUtil _applicationUtils;
private ICommand _validateCommand;
private ICommand _saveCommand;
private ICommand _authorizeCommand;
private string _connectionStatus;
private string _foreColor;
private Visibility _progressbarVisibility = Visibility.Collapsed;
private string tempToken;
Process ieProccess = null;
#endregion
#region Public constructors
public ConnectionViewModel()
{
}
#endregion
internal void Initialize(ApplicationUtil applicationUtility)
{
this._applicationUtils = applicationUtility;
var returnDetails = applicationUtility.CredentialStore.GetConnectionDetails();
_credentialInfo = ObjectUtils.JsonDeserialize<CredentialModel>(returnDetails.Value);
if (_credentialInfo == null)
this._credentialInfo = new CredentialModel();
}
#region Public Members
/// <summary>
/// Gets the Authorize command
/// </summary>
/// <value>The Authorize command.</value>
//public ICommand GetTokenCommand
//{
// get
// {
// this._authorizeCommand = _authorizeCommand ?? new RelayCommand(p => GetToken(), null, false);
// return this._authorizeCommand;
// }
//}
/// <summary>
/// Gets the Validate command
/// </summary>
/// <value>The validate command.</value>
public ICommand ValidateCommand
{
get
{
this._validateCommand = _validateCommand ?? new RelayCommand(p => Validate(), null, false);
return _validateCommand;
}
}
/// <summary>
/// Gets the Save command
/// </summary>
/// <value>The save command.</value>
public ICommand SaveCommand
{
get
{
this._saveCommand = _saveCommand ?? new RelayCommand(p => Save(), null, false);
return this._saveCommand;
}
}
public string ConnectionStatus
{
get
{
return _connectionStatus;
}
set
{
this._connectionStatus = value;
this.OnPropertyChanged("ConnectionStatus");
}
}
public Visibility ProgressbarVisibility
{
get
{
return this._progressbarVisibility;
}
set
{
this._progressbarVisibility = value;
this.OnPropertyChanged("ProgressbarVisibility");
}
}
public string ForeColor
{
get { return _foreColor; }
set
{
_foreColor = value;
OnPropertyChanged("ForeColor");
}
}
public string ClientID
{
get
{
return this._credentialInfo.ClientID;
}
set
{
if (this._credentialInfo.ClientID != value)
{
this._credentialInfo.ClientID = value;
OnPropertyChanged("ClientID");
OnPropertyChanged("TButtonEnable");
OnPropertyChanged("ButtonEnable");
OnPropertyChanged("SaveEnable");
}
}
}
public string Scope
{
get
{
return this._credentialInfo.Scope;
}
set
{
this._credentialInfo.Scope = value;
OnPropertyChanged("Scope");
OnPropertyChanged("TButtonEnable");
OnPropertyChanged("ButtonEnable");
OnPropertyChanged("SaveEnable");
}
}
public string ClientSecret
{
get
{
return this._credentialInfo.ClientSecret;
}
set
{
this._credentialInfo.ClientSecret = value;
OnPropertyChanged("ClientSecret");
OnPropertyChanged("TButtonEnable");
OnPropertyChanged("ButtonEnable");
OnPropertyChanged("SaveEnable");
}
}
public string CallBack
{
get
{
return this._credentialInfo.CallBack;
}
set
{
if (this._credentialInfo.CallBack != value)
{
this._credentialInfo.CallBack = value;
OnPropertyChanged("CallBack");
OnPropertyChanged("TButtonEnable");
OnPropertyChanged("ButtonEnable");
OnPropertyChanged("SaveEnable");
}
}
}
public string BaseUrl
{
get
{
return this._credentialInfo.BaseUrl;
}
set
{
this._credentialInfo.BaseUrl = value;
OnPropertyChanged("BaseUrl");
OnPropertyChanged("TButtonEnable");
OnPropertyChanged("ButtonEnable");
OnPropertyChanged("SaveEnable");
}
}
public string AccessToken
{
get { return this._credentialInfo.AccessToken; }
set
{
if (this._credentialInfo.AccessToken != value)
{
this._credentialInfo.AccessToken = value;
OnPropertyChanged("AccessToken");
}
}
}
public string RefreshToken
{
get { return this._credentialInfo.RefreshToken; }
set
{
if (this._credentialInfo.RefreshToken != value)
{
this._credentialInfo.RefreshToken = value;
OnPropertyChanged("RefreshToken");
}
}
}
public string OrganizationId
{
get { return this._credentialInfo.OrganizationId; }
set
{
if (this._credentialInfo.OrganizationId != value)
{
this._credentialInfo.OrganizationId = value;
OnPropertyChanged("OrganizationId");
}
}
}
private void GetToken()
{
System.Windows.Application.Current.Dispatcher.BeginInvoke((Action)delegate ()
{
ConnectionStatus = "";
ForeColor = "";
this.ProgressbarVisibility = Visibility.Visible;
});
try
{
string authorizationUrl = string.Format("https://accounts.zoho.com/oauth/v2/auth?scope={0}&client_id={1}&response_type=code&access_type=offline&redirect_uri={2}", this._credentialInfo.Scope, this._credentialInfo.ClientID, this._credentialInfo.CallBack);
ieProccess = Process.Start("iexplore.exe", authorizationUrl);
this.ConnectionStatus = "Authorization completed, now validate the data";
ForeColor = "Green";
}
catch (Exception ex)
{
this.ConnectionStatus = "Authorization failed " + ex.Message;
ForeColor = "Red";
}
finally
{
System.Windows.Application.Current.Dispatcher.BeginInvoke((Action)delegate ()
{
this.ProgressbarVisibility = Visibility.Collapsed;
});
}
}
private void Validate()
{
//ToDo : Validate the credentials and show message on UI.
System.Windows.Application.Current.Dispatcher.BeginInvoke((Action)delegate ()
{
ConnectionStatus = "";
ForeColor = "";
this.ProgressbarVisibility = Visibility.Visible;
});
bool state = false;
string error = string.Empty;
try
{
this.GetToken();
string tempToken = GetTemporaryToken();
string accessToken = GetAccessToken(tempToken);
if (string.IsNullOrEmpty(_credentialInfo.OrganizationId))
{
string requestUrl = _credentialInfo.BaseUrl + "organizations";
this._credentialInfo.OrganizationId = GetOrganizationId(requestUrl);
this._applicationUtils.CredentialStore.SaveConnectionDetails<CredentialModel>(this._credentialInfo);
}
if (!string.IsNullOrEmpty(accessToken))
state = true;
}
catch (Exception ex)
{
state = false;
error = ex.Message;
}
finally
{
System.Windows.Application.Current.Dispatcher.BeginInvoke((Action)delegate ()
{
if (state)
{
this.ConnectionStatus = "Validation passed, now you can save these details.";
ForeColor = "Green";
}
else
{
this.ConnectionStatus = "Test failed for reason : " + error;
ForeColor = "Red";
}
this.ProgressbarVisibility = Visibility.Collapsed;
});
ieProccess.CloseMainWindow();
}
}
private void Save()
{
System.Windows.Application.Current.Dispatcher.BeginInvoke((Action)delegate ()
{
this.ProgressbarVisibility = Visibility.Visible;
});
var saveResponse = this._applicationUtils.CredentialStore.SaveConnectionDetails<CredentialModel>(this._credentialInfo);
if (saveResponse.Value)
{
ConnectionStatus = "Connection saved successfully";
ForeColor = "Green";
}
else
{
ConnectionStatus = "Connection saving failed.";
ForeColor = "Red";
}
System.Windows.Application.Current.Dispatcher.BeginInvoke((Action)delegate ()
{
this.ProgressbarVisibility = Visibility.Collapsed;
});
}
private string GetTemporaryToken()
{
string filename = string.Empty;
string tempCode = string.Empty;
try
{
SHDocVw.ShellWindows shellWindows = new SHDocVw.ShellWindows();
foreach (SHDocVw.InternetExplorer ie in shellWindows)
{
filename = Path.GetFileNameWithoutExtension(ie.FullName).ToLower();
if (filename.Equals("iexplore") && ie.LocationURL.Contains("code"))
{
var url = ie.LocationURL;
string[] urlParts = (ie.LocationURL.ToString()).Split('&');
foreach (string urlsPart in urlParts)
{
if (urlsPart.Contains("code"))
{
tempCode = urlsPart.Split('=')[1];
}
}
}
}
}
catch (Exception ex)
{
returnResult.SetError("Error to get temporary token " + ex.StackTrace);
}
return tempCode;
}
private string GetAccessToken(string tempToken)
{
string accessToken = string.Empty;
if (!string.IsNullOrEmpty(tempToken))
{
try
{
HttpClient authClient = new HttpClient();
HttpContent content = new FormUrlEncodedContent(new Dictionary<string, string>
{
{"code",tempToken},
{"redirect_uri",_credentialInfo.CallBack},
{"client_id", _credentialInfo.ClientID},
{"client_secret", _credentialInfo.ClientSecret},
{"grant_type","authorization_code"}
}
);
HttpResponseMessage message = authClient.PostAsync("https://accounts.zoho.com/oauth/v2/token", content).Result;
string responseString = message.Content.ReadAsStringAsync().Result;
JObject obj = JObject.Parse(responseString);
accessToken = (string)obj["access_token"];
string refreshToken = (string)obj["refresh_token"];
string domain = (string)obj["api_domain"];
this._credentialInfo.AccessToken = accessToken;
if (!string.IsNullOrEmpty(refreshToken) && (this._credentialInfo.RefreshToken != refreshToken))
{
this._credentialInfo.RefreshToken = refreshToken;
}
this._credentialInfo.Domain = domain;
//this._applicationUtils.CredentialStore.SaveConnectionDetails<CredentialModel>(this._credentialInfo);
}
catch (Exception ex)
{
returnResult.SetError("Error to get access token " + ex.StackTrace);
}
}
return accessToken;
}
private string GetOrganizationId(string requestUrl)
{
string orgId = string.Empty;
try
{
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, requestUrl);
request.Headers.Add("Authorization", "Zoho-oauthtoken " + _credentialInfo.AccessToken.Replace("\"", ""));
HttpClient client = new HttpClient();
HttpResponseMessage response = client.SendAsync(request).Result;
var responseData = response.Content.ReadAsStringAsync().Result;
var jsonData = XElement.Parse(JsonConvert.DeserializeXmlNode(responseData, "root").OuterXml);
orgId = jsonData.Descendants("id").Any() ? jsonData.Descendants("id").FirstOrDefault().Value : string.Empty;
}
catch (Exception ex)
{
returnResult.SetError("Error to get organization id " + ex.StackTrace);
}
return orgId;
}
#endregion
#region ICredential Implementation
/// <summary>
/// Validates credential for configuraion data
/// </summary>
/// <param name="configurationData">Represents Credential model</param>
/// <returns></returns>
public ReturnMessage<bool> Validate(string configurationData)
{
var returnResult = new ReturnMessage<bool>();
try
{
this._credentialInfo = ObjectUtils.JsonDeserialize<CredentialModel>(configurationData);
if (!string.IsNullOrWhiteSpace(_credentialInfo.AccessToken) &&
!string.IsNullOrWhiteSpace(_credentialInfo.RefreshToken))
{
returnResult.SetSuccess("Validation successful");
}
else
{
returnResult.SetError("Validation failed. Access and Refresh token not found");
}
}
catch (Exception e)
{
returnResult.SetError(e.ToString());
}
return returnResult;
}
/// <summary>
/// Generates intermediate resultset for partial data
/// </summary>
/// <param name="resource">A dictionay object for different level of data generation</param>
/// <returns></returns>
public ReturnMessage<IDictionary<string, string>> PartialValidate(IDictionary<string, string> resource)
{
var returnMessage = new ReturnMessage<IDictionary<string, string>>();
//ToDo : Generate intermediate results for processing data / resultset etc.
try
{
if (resource != null)
{
var credentialInfo = resource["ConfigData"];
if (!string.IsNullOrEmpty(credentialInfo))
{
this._credentialInfo = ObjectUtils.JsonDeserialize<CredentialModel>(credentialInfo);
var step = resource["Step"];
int stepValue = 0;
if (!string.IsNullOrWhiteSpace(step))
int.TryParse(step, out stepValue);
if (stepValue == 0)
{
string authorizationUrl = string.Format("https://accounts.zoho.com/oauth/v2/auth?scope={0}&client_id={1}&response_type=code&access_type=offline&redirect_uri={2}", this._credentialInfo.Scope, this._credentialInfo.ClientID, this._credentialInfo.CallBack);
resource["RequestUrl"] = authorizationUrl;
resource["OpenBrowser"] = "true";
resource["Step"] = (++stepValue).ToString();
resource["CallBack"] = this._credentialInfo.CallBack;
resource["ConfigData"] = ObjectUtils.JsonSerializer<CredentialModel>(this._credentialInfo);
returnMessage.SetSuccess("Success", resource);
}
else if (stepValue == 1)
{
var responseUrl = resource["ResponseUrl"];
if (!string.IsNullOrWhiteSpace(responseUrl))
{
string[] urlParts = responseUrl.Split('/');
foreach (string urlsPart in urlParts)
{
if (urlsPart.Contains("code"))
{
this.tempToken = urlsPart.Split('=')[1];
}
}
var validateResult = GetAccessToken(tempToken);
resource["OpenBrowser"] = "false";
resource["ConfigData"] = ObjectUtils.JsonSerializer<CredentialModel>(this._credentialInfo);
if (!string.IsNullOrEmpty(validateResult))
returnMessage.SetSuccess(validateResult, resource);
else
returnMessage.SetError(validateResult, resource);
}
}
}
else
returnMessage.SetError("Empty config data");
}
else
returnMessage.SetError("Resource data dictionary is empty");
}
catch (Exception ex)
{
returnMessage.SetError("Error in Partial Validate " + ex.Message);
}
return returnMessage;
}
#endregion
}
}