/// <summary>
 /// Clears the authentication objects and cache data.
 /// </summary>
 public static void SignOut()
 {
     SoftmakeAll.SDK.Fluent.GeneralCacheHelper.Clear();
     SoftmakeAll.SDK.Fluent.SDKContext.ClientWebSocket.DisposeAsync().ConfigureAwait(false);
     SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials     = null;
     SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult    = null;
     SoftmakeAll.SDK.Fluent.SDKContext.PublicClientApplication = null;
 }
 /// <summary>
 /// Creates a PublicClientApplication with redirect URI.
 /// </summary>
 /// <param name="ContextIdentifier">Your Public Application Client ID.</param>
 /// <param name="PolicyName">The Azure AD B2C policy name.</param>
 /// <param name="RedirectURI">URI to redirect after login succeeded.</param>
 /// <returns>A PublicClientApplication.</returns>
 private static Microsoft.Identity.Client.IPublicClientApplication CreatePublicClientApplication(System.Guid ContextIdentifier, System.String PolicyName, System.String RedirectURI)
 {
     Microsoft.Identity.Client.IPublicClientApplication PublicClientApplication = Microsoft.Identity.Client.PublicClientApplicationBuilder
                                                                                  .Create(ContextIdentifier.ToString())
                                                                                  .WithB2CAuthority($"https://softmakeb2c.b2clogin.com/tfp/softmakeb2c.onmicrosoft.com/B2C_1{PolicyName}")
                                                                                  .WithRedirectUri(RedirectURI)
                                                                                  .Build();
     SoftmakeAll.SDK.Fluent.TokenCacheHelper.EnableSerialization(PublicClientApplication.UserTokenCache);
     return(PublicClientApplication);
 }
        /// <summary>
        /// Authenticate user/application using Credentials.
        /// </summary>
        /// <param name="Credentials">Credentials to use during authentication process.</param>
        public static async System.Threading.Tasks.Task AuthenticateAsync(SoftmakeAll.SDK.Fluent.Authentication.ICredentials Credentials)
        {
            if (Credentials != null)
            {
                SoftmakeAll.SDK.Fluent.SDKContext.SignOut();
                SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials = Credentials;

                // From AccessKey
                if (Credentials.AuthenticationType == SoftmakeAll.SDK.Fluent.Authentication.AuthenticationTypes.Application)
                {
                    SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.Authorization = $"Basic {System.Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes($"{Credentials.ClientID}@{Credentials.ContextIdentifier.ToString().ToLower()}:{Credentials.ClientSecret}"))}";
                    SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.Store();
                    await SoftmakeAll.SDK.Fluent.SDKContext.ClientWebSocket.ConfigureAsync(SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.Authorization);

                    return;
                }
            }
            else if (SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials == null)
            {
                try
                {
                    System.Text.Json.JsonElement CacheData = SoftmakeAll.SDK.Fluent.GeneralCacheHelper.ReadString().ToJsonElement();
                    if (!(CacheData.IsValid()))
                    {
                        throw new System.Exception();
                    }

                    // From AccessKey
                    if (CacheData.GetInt32("AuthType") == (int)SoftmakeAll.SDK.Fluent.Authentication.AuthenticationTypes.Application)
                    {
                        SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials = new SoftmakeAll.SDK.Fluent.Authentication.Credentials(CacheData.GetGuid("ContextIdentifier"), CacheData.GetString("ClientID"), null, (SoftmakeAll.SDK.Fluent.Authentication.AuthenticationTypes)CacheData.GetInt32("AuthType"));
                        SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.Authorization = CacheData.GetString("Authorization");
                        if (System.String.IsNullOrWhiteSpace(SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.Authorization))
                        {
                            throw new System.Exception();
                        }

                        await SoftmakeAll.SDK.Fluent.SDKContext.ClientWebSocket.ConfigureAsync(SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.Authorization);

                        return;
                    }
                    else
                    {
                        SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials = new SoftmakeAll.SDK.Fluent.Authentication.Credentials(CacheData.GetJsonElement("AppMetadata").EnumerateObject().First().Value.GetGuid("client_id"));
                        SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.AuthenticationType = SoftmakeAll.SDK.Fluent.Authentication.AuthenticationTypes.Interactive;
                    }
                }
                catch { }
            }

            if (SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials == null)
            {
                SoftmakeAll.SDK.Fluent.SDKContext.SignOut();
                throw new System.Exception("Invalid Credentials from cache.");
            }


            // From AccessKey
            if (SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.AuthenticationType == SoftmakeAll.SDK.Fluent.Authentication.AuthenticationTypes.Application)
            {
                return;
            }


            // From Public Client Application
            if ((SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult == null) || (SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult.ExpiresOn.Subtract(System.DateTimeOffset.UtcNow).TotalMinutes <= 5.0D))
            {
                System.String[] Scopes = new System.String[] { "openid", "https://softmakeb2c.onmicrosoft.com/48512da7-b030-4e62-be61-9e19b2c52d8a/user_impersonation" };
                if (SoftmakeAll.SDK.Fluent.SDKContext.PublicClientApplication == null)
                {
                    if (SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.AuthenticationType == SoftmakeAll.SDK.Fluent.Authentication.AuthenticationTypes.Interactive) // From Interactive
                    {
                        SoftmakeAll.SDK.Fluent.SDKContext.PublicClientApplication = SoftmakeAll.SDK.Fluent.SDKContext.CreatePublicClientApplication(SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.ContextIdentifier, "A_signup_signin", "http://localhost:1435");
                    }
                    else if (SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.AuthenticationType == SoftmakeAll.SDK.Fluent.Authentication.AuthenticationTypes.Credentials) // From Username and Password
                    {
                        SoftmakeAll.SDK.Fluent.SDKContext.PublicClientApplication = SoftmakeAll.SDK.Fluent.SDKContext.CreatePublicClientApplication(SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.ContextIdentifier, "_ROPC");
                    }
                    else
                    {
                        throw new System.Exception("Invalid authentication type.");
                    }
                }

                // Getting existing Account in cache
                try
                {
                    System.Collections.Generic.IEnumerable <Microsoft.Identity.Client.IAccount> Accounts = await SoftmakeAll.SDK.Fluent.SDKContext.PublicClientApplication.GetAccountsAsync();

                    if (Accounts.Any())
                    {
                        SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult = await SoftmakeAll.SDK.Fluent.SDKContext.PublicClientApplication.AcquireTokenSilent(Scopes, Accounts.FirstOrDefault()).ExecuteAsync();

                        if (SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult != null)
                        {
                            SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.Authorization = $"Bearer {SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult.AccessToken}";
                            await SoftmakeAll.SDK.Fluent.SDKContext.ClientWebSocket.ConfigureAsync(SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult.AccessToken);

                            return;
                        }
                    }
                }
                catch
                {
                    SoftmakeAll.SDK.Fluent.GeneralCacheHelper.Clear();
                }


                if (SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.AuthenticationType == SoftmakeAll.SDK.Fluent.Authentication.AuthenticationTypes.Interactive) // From Interactive
                {
                    try
                    {
                        SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult = await SoftmakeAll.SDK.Fluent.SDKContext.PublicClientApplication.AcquireTokenInteractive(Scopes).WithPrompt(Microsoft.Identity.Client.Prompt.ForceLogin).ExecuteAsync();
                    }
                    catch { }
                }
                else if (SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.AuthenticationType == SoftmakeAll.SDK.Fluent.Authentication.AuthenticationTypes.Credentials) // From Username and Password
                {
                    if (System.String.IsNullOrWhiteSpace(SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.ClientSecret))
                    {
                        SoftmakeAll.SDK.Fluent.SDKContext.SignOut();
                        throw new System.Exception("Authentication aborted. Please, re-enter credentials.");
                    }

                    System.Security.SecureString Password = new System.Security.SecureString();
                    foreach (System.Char Char in SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.ClientSecret)
                    {
                        Password.AppendChar(Char);
                    }
                    Password.MakeReadOnly();

                    try
                    {
                        SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult = await SoftmakeAll.SDK.Fluent.SDKContext.PublicClientApplication.AcquireTokenByUsernamePassword(Scopes, SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.ClientID, Password).ExecuteAsync();

                        Password.Dispose();
                    }
                    catch
                    {
                        Password.Dispose();
                        SoftmakeAll.SDK.Fluent.SDKContext.SignOut();
                        throw new System.Exception("Invalid username or password.");
                    }
                }

                if (SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult == null)
                {
                    SoftmakeAll.SDK.Fluent.SDKContext.SignOut();
                    throw new System.Exception("Authentication aborted.");
                }


                SoftmakeAll.SDK.Fluent.SDKContext.InMemoryCredentials.Authorization = $"Bearer {SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult.AccessToken}";
                await SoftmakeAll.SDK.Fluent.SDKContext.ClientWebSocket.ConfigureAsync(SoftmakeAll.SDK.Fluent.SDKContext.AuthenticationResult.AccessToken);

                return;
            }
        }