Merge pull request #234 from RocketChat/fix/unrealm-app-the-app-2

Unrealm app the app 2

app/src/main/java/chat/rocket/android/api/MethodCallHelper.java

@@ -166,6 +166,21 @@ public class MethodCallHelper {
         .onSuccessTask(this::saveToken);
   }
 
+  public Task<Void> loginWithLdap(final String username, final String password) {
+    return call("login", TIMEOUT_MS, () -> {
+      JSONObject param = new JSONObject();
+
+      param.put("ldap", true);
+      param.put("username", username);
+      param.put("ldapPass", password);
+      param.put("ldapOptions", new JSONObject());
+
+      return new JSONArray().put(param);
+    }).onSuccessTask(CONVERT_TO_JSON_OBJECT)
+        .onSuccessTask(task -> Task.forResult(task.getResult().getString("token")))
+        .onSuccessTask(this::saveToken);
+  }
+
   /**
    * Login with OAuth.
    */

app/src/main/java/chat/rocket/android/fragment/AbstractWebViewFragment.java

@@ -16,6 +16,7 @@ import hugo.weaving.DebugLog;
 
 public abstract class AbstractWebViewFragment extends AbstractFragment
     implements OnBackPressListener {
+  private boolean isSet = false;
   private WebView webview;
   private WebViewClient webviewClient = new WebViewClient() {
     private boolean error;
@@ -66,6 +67,10 @@ public abstract class AbstractWebViewFragment extends AbstractFragment
   }
 
   private void setupWebView() {
+    if (isSet) {
+      return;
+    }
+
     WebSettings settings = webview.getSettings();
     if (settings != null) {
       settings.setJavaScriptEnabled(true);
@@ -80,6 +85,8 @@ public abstract class AbstractWebViewFragment extends AbstractFragment
       //refs: https://code.google.com/p/android/issues/detail?id=35288
       webview.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
     }
+
+    isSet = true;
   }
 
   @Override
@@ -92,6 +99,15 @@ public abstract class AbstractWebViewFragment extends AbstractFragment
     }
   }
 
+  protected WebView getWebview() {
+    if (webview == null) {
+      return null;
+    }
+
+    setupWebView();
+    return webview;
+  }
+
   protected abstract void navigateToInitialPage(WebView webview);
 
   protected void onPageLoaded(WebView webview, String url) {

app/src/main/java/chat/rocket/android/fragment/oauth/AbstractOAuthFragment.java

@@ -12,20 +12,22 @@ import org.json.JSONObject;
 import java.nio.charset.Charset;
 import chat.rocket.android.api.MethodCallHelper;
 import chat.rocket.android.fragment.AbstractWebViewFragment;
-import chat.rocket.android.helper.LogIfError;
-import chat.rocket.android.log.RCLog;
-import chat.rocket.persistence.realm.models.ddp.RealmMeteorLoginServiceConfiguration;
-import chat.rocket.persistence.realm.RealmStore;
+import chat.rocket.core.models.LoginServiceConfiguration;
+import chat.rocket.persistence.realm.repositories.RealmLoginServiceConfigurationRepository;
 
-public abstract class AbstractOAuthFragment extends AbstractWebViewFragment {
+public abstract class AbstractOAuthFragment extends AbstractWebViewFragment
+    implements OAuthContract.View {
+
+  private OAuthContract.Presenter presenter;
+
+  protected abstract String getOAuthServiceName();
 
   protected String hostname;
   private String url;
-  private boolean resultOK;
 
-  protected abstract String getOAuthServiceName();
+  private boolean resultOK;
 
-  protected abstract String generateURL(RealmMeteorLoginServiceConfiguration oauthConfig);
+  protected abstract String generateURL(LoginServiceConfiguration oauthConfig);
 
   private boolean hasValidArgs(Bundle args) {
     return args != null
@@ -54,47 +56,28 @@ public abstract class AbstractOAuthFragment extends AbstractWebViewFragment {
     }
 
     hostname = args.getString("hostname");
-    RealmMeteorLoginServiceConfiguration oauthConfig =
-        RealmStore.get(hostname).executeTransactionForRead(realm ->
-            realm.where(RealmMeteorLoginServiceConfiguration.class)
-                .equalTo(RealmMeteorLoginServiceConfiguration.SERVICE, getOAuthServiceName())
-                .findFirst());
-    if (oauthConfig == null) {
-      throw new IllegalArgumentException(
-          "Invalid hostname given,");
-    }
-    url = generateURL(oauthConfig);
+
+    presenter = new OAuthPresenter(
+        new RealmLoginServiceConfigurationRepository(hostname),
+        new MethodCallHelper(getContext(), hostname)
+    );
   }
 
   @Override
-  protected void navigateToInitialPage(WebView webview) {
-    if (TextUtils.isEmpty(url)) {
-      finish();
-      return;
-    }
-
-    resultOK = false;
-    webview.loadUrl(url);
-    webview.addJavascriptInterface(new JSInterface(result -> {
-      // onPageFinish is called twice... Should ignore latter one.
-      if (resultOK) {
-        return;
-      }
-
-      if (result != null && result.optBoolean("setCredentialToken", false)) {
-        try {
-          final String credentialToken = result.getString("credentialToken");
-          final String credentialSecret = result.getString("credentialSecret");
+  public void onResume() {
+    super.onResume();
+    presenter.bindView(this);
+    presenter.loadService(getOAuthServiceName());
+  }
 
-          handleOAuthCallback(credentialToken, credentialSecret);
-          resultOK = true;
-        } catch (JSONException exception) {
-          RCLog.e(exception, "failed to parse OAuth result.");
-        }
-      }
+  @Override
+  public void onPause() {
+    presenter.release();
+    super.onPause();
+  }
 
-      onOAuthCompleted();
-    }), "_rocketchet_hook");
+  @Override
+  protected void navigateToInitialPage(WebView webview) {
   }
 
   @Override
@@ -108,18 +91,58 @@ public abstract class AbstractOAuthFragment extends AbstractWebViewFragment {
     }
   }
 
-  private void handleOAuthCallback(final String credentialToken, final String credentialSecret) {
-    new MethodCallHelper(getContext(), hostname)
-        .loginWithOAuth(credentialToken, credentialSecret)
-        .continueWith(new LogIfError());
+  @Override
+  public void showService(LoginServiceConfiguration oauthConfig) {
+    url = generateURL(oauthConfig);
+
+    showWebView();
+  }
+
+  @Override
+  public void close() {
+    finish();
   }
 
-  protected void onOAuthCompleted() {
+  @Override
+  public void showLoginDone() {
+    resultOK = true;
+    onOAuthCompleted();
+  }
+
+  @Override
+  public void showLoginError() {
+    onOAuthCompleted();
+  }
+
+  private void showWebView() {
+    if (TextUtils.isEmpty(url)) {
+      finish();
+      return;
+    }
+
+    final WebView webView = getWebview();
+    if (webView == null) {
+      finish();
+      return;
+    }
 
+    resultOK = false;
+    webView.loadUrl(url);
+    webView.addJavascriptInterface(new JSInterface(result -> {
+      // onPageFinish is called twice... Should ignore latter one.
+      if (resultOK) {
+        return;
+      }
+
+      presenter.login(result);
+    }), "_rocketchet_hook");
+  }
+
+  protected void onOAuthCompleted() {
   }
 
   private interface JSInterfaceCallback {
-    void hanldeResult(@Nullable JSONObject result);
+    void handleResult(@Nullable JSONObject result);
   }
 
   private static final class JSInterface {
@@ -132,9 +155,9 @@ public abstract class AbstractOAuthFragment extends AbstractWebViewFragment {
     @JavascriptInterface
     public void handleConfig(String config) {
       try {
-        jsInterfaceCallback.hanldeResult(new JSONObject(config));
+        jsInterfaceCallback.handleResult(new JSONObject(config));
       } catch (Exception exception) {
-        jsInterfaceCallback.hanldeResult(null);
+        jsInterfaceCallback.handleResult(null);
       }
     }
   }

app/src/main/java/chat/rocket/android/fragment/oauth/FacebookOAuthFragment.java

 package chat.rocket.android.fragment.oauth;
 
-import chat.rocket.persistence.realm.models.ddp.RealmMeteorLoginServiceConfiguration;
+import chat.rocket.core.models.LoginServiceConfiguration;
 import okhttp3.HttpUrl;
 
 public class FacebookOAuthFragment extends AbstractOAuthFragment {
@@ -11,13 +11,13 @@ public class FacebookOAuthFragment extends AbstractOAuthFragment {
   }
 
   @Override
-  protected String generateURL(RealmMeteorLoginServiceConfiguration oauthConfig) {
+  protected String generateURL(LoginServiceConfiguration oauthConfig) {
     return new HttpUrl.Builder().scheme("https")
         .host("www.facebook.com")
         .addPathSegment("v2.2")
         .addPathSegment("dialog")
         .addPathSegment("oauth")
-        .addQueryParameter("client_id", oauthConfig.getAppId())
+        .addQueryParameter("client_id", oauthConfig.getKey())
         .addQueryParameter("redirect_uri", "https://" + hostname + "/_oauth/facebook?close")
         .addQueryParameter("display", "popup")
         .addQueryParameter("scope", "email")

app/src/main/java/chat/rocket/android/fragment/oauth/GitHubOAuthFragment.java

 package chat.rocket.android.fragment.oauth;
 
-import chat.rocket.persistence.realm.models.ddp.RealmMeteorLoginServiceConfiguration;
+import chat.rocket.core.models.LoginServiceConfiguration;
 import okhttp3.HttpUrl;
 
 public class GitHubOAuthFragment extends AbstractOAuthFragment {
@@ -11,13 +11,13 @@ public class GitHubOAuthFragment extends AbstractOAuthFragment {
   }
 
   @Override
-  protected String generateURL(RealmMeteorLoginServiceConfiguration oauthConfig) {
+  protected String generateURL(LoginServiceConfiguration oauthConfig) {
     return new HttpUrl.Builder().scheme("https")
         .host("github.com")
         .addPathSegment("login")
         .addPathSegment("oauth")
         .addPathSegment("authorize")
-        .addQueryParameter("client_id", oauthConfig.getClientId())
+        .addQueryParameter("client_id", oauthConfig.getKey())
         .addQueryParameter("scope", "user:email")
         .addQueryParameter("state", getStateString())
         .build()

app/src/main/java/chat/rocket/android/fragment/oauth/GoogleOAuthFragment.java

 package chat.rocket.android.fragment.oauth;
 
-import chat.rocket.persistence.realm.models.ddp.RealmMeteorLoginServiceConfiguration;
+import chat.rocket.core.models.LoginServiceConfiguration;
 import okhttp3.HttpUrl;
 
 public class GoogleOAuthFragment extends AbstractOAuthFragment {
@@ -11,14 +11,14 @@ public class GoogleOAuthFragment extends AbstractOAuthFragment {
   }
 
   @Override
-  protected String generateURL(RealmMeteorLoginServiceConfiguration oauthConfig) {
+  protected String generateURL(LoginServiceConfiguration oauthConfig) {
     return new HttpUrl.Builder().scheme("https")
         .host("accounts.google.com")
         .addPathSegment("o")
         .addPathSegment("oauth2")
         .addPathSegment("auth")
         .addQueryParameter("response_type", "code")
-        .addQueryParameter("client_id", oauthConfig.getClientId())
+        .addQueryParameter("client_id", oauthConfig.getKey())
         .addQueryParameter("scope", "profile email")
         .addQueryParameter("redirect_uri", "https://" + hostname + "/_oauth/google?close")
         .addQueryParameter("state", getStateString())

app/src/main/java/chat/rocket/android/fragment/oauth/OAuthContract.java

+package chat.rocket.android.fragment.oauth;
+
+import org.json.JSONObject;
+
+import chat.rocket.android.shared.BaseContract;
+import chat.rocket.core.models.LoginServiceConfiguration;
+
+public interface OAuthContract {
+
+  interface View extends BaseContract.View {
+
+    void showService(LoginServiceConfiguration oauthConfig);
+
+    void close();
+
+    void showLoginDone();
+
+    void showLoginError();
+  }
+
+  interface Presenter extends BaseContract.Presenter<View> {
+
+    void loadService(String serviceName);
+
+    void login(JSONObject credentialJsonObject);
+  }
+}

app/src/main/java/chat/rocket/android/fragment/oauth/OAuthPresenter.java

+package chat.rocket.android.fragment.oauth;
+
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import org.json.JSONObject;
+
+import chat.rocket.android.BackgroundLooper;
+import chat.rocket.android.api.MethodCallHelper;
+import chat.rocket.android.helper.LogIfError;
+import chat.rocket.android.helper.TextUtils;
+import chat.rocket.android.shared.BasePresenter;
+import chat.rocket.core.repositories.LoginServiceConfigurationRepository;
+
+public class OAuthPresenter extends BasePresenter<OAuthContract.View>
+    implements OAuthContract.Presenter {
+
+  private final LoginServiceConfigurationRepository loginServiceConfigurationRepository;
+  private final MethodCallHelper methodCallHelper;
+
+  public OAuthPresenter(LoginServiceConfigurationRepository loginServiceConfigurationRepository,
+                        MethodCallHelper methodCallHelper) {
+    this.loginServiceConfigurationRepository = loginServiceConfigurationRepository;
+    this.methodCallHelper = methodCallHelper;
+  }
+
+  @Override
+  public void loadService(String serviceName) {
+    addSubscription(
+        loginServiceConfigurationRepository.getByName(serviceName)
+            .subscribeOn(AndroidSchedulers.from(BackgroundLooper.get()))
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe(optional -> {
+              if (optional.isPresent()) {
+                view.showService(optional.get());
+              } else {
+                view.close();
+              }
+            })
+    );
+  }
+
+  @Override
+  public void login(JSONObject credentialJsonObject) {
+    if (credentialJsonObject == null || !credentialJsonObject.optBoolean("setCredentialToken")) {
+      view.showLoginError();
+      return;
+    }
+
+    final String credentialToken = credentialJsonObject.optString("credentialToken");
+    final String credentialSecret = credentialJsonObject.optString("credentialSecret");
+
+    if (TextUtils.isEmpty(credentialToken) || TextUtils.isEmpty(credentialSecret)) {
+      view.showLoginError();
+      return;
+    }
+
+    view.showLoginDone();
+
+    methodCallHelper.loginWithOAuth(credentialToken, credentialSecret)
+        .continueWith(new LogIfError());
+  }
+}

app/src/main/java/chat/rocket/android/fragment/oauth/TwitterOAuthFragment.java

 package chat.rocket.android.fragment.oauth;
 
-import chat.rocket.persistence.realm.models.ddp.RealmMeteorLoginServiceConfiguration;
+import chat.rocket.core.models.LoginServiceConfiguration;
 
 public class TwitterOAuthFragment extends AbstractOAuthFragment {
 
@@ -10,7 +10,7 @@ public class TwitterOAuthFragment extends AbstractOAuthFragment {
   }
 
   @Override
-  protected String generateURL(RealmMeteorLoginServiceConfiguration oauthConfig) {
+  protected String generateURL(LoginServiceConfiguration oauthConfig) {
     return "https://" + hostname + "/_oauth/twitter/"
         + "?requestTokenAndRedirect=true&state=" + getStateString();
   }

app/src/main/java/chat/rocket/android/fragment/server_config/AbstractServerConfigFragment.java

@@ -25,7 +25,6 @@ abstract class AbstractServerConfigFragment extends AbstractFragment {
     hostname = args.getString(LoginActivity.KEY_HOSTNAME);
     if (TextUtils.isEmpty(hostname)) {
       finish();
-      return;
     }
   }
 

app/src/main/java/chat/rocket/android/fragment/server_config/LoginContract.java

+package chat.rocket.android.fragment.server_config;
+
+import java.util.List;
+import chat.rocket.android.shared.BaseContract;
+import chat.rocket.core.models.LoginServiceConfiguration;
+
+public interface LoginContract {
+
+  interface View extends BaseContract.View {
+
+    void showLoader();
+
+    void hideLoader();
+
+    void showError(String message);
+
+    void showLoginServices(List<LoginServiceConfiguration> loginServiceList);
+  }
+
+  interface Presenter extends BaseContract.Presenter<View> {
+
+    void login(String username, String password);
+  }
+}

app/src/main/java/chat/rocket/android/fragment/server_config/LoginFragment.java

@@ -11,18 +11,21 @@ import java.util.HashMap;
 import java.util.List;
 import chat.rocket.android.R;
 import chat.rocket.android.api.MethodCallHelper;
-import chat.rocket.android.helper.TextUtils;
 import chat.rocket.android.layouthelper.oauth.OAuthProviderInfo;
 import chat.rocket.android.log.RCLog;
-import chat.rocket.persistence.realm.models.ddp.RealmMeteorLoginServiceConfiguration;
-import chat.rocket.persistence.realm.RealmListObserver;
-import chat.rocket.persistence.realm.RealmStore;
+import chat.rocket.core.models.LoginServiceConfiguration;
+import chat.rocket.persistence.realm.repositories.RealmLoginServiceConfigurationRepository;
+import chat.rocket.persistence.realm.repositories.RealmPublicSettingRepository;
 
 /**
  * Login screen.
  */
-public class LoginFragment extends AbstractServerConfigFragment {
-  private RealmListObserver<RealmMeteorLoginServiceConfiguration> authProvidersObserver;
+public class LoginFragment extends AbstractServerConfigFragment implements LoginContract.View {
+
+  private LoginContract.Presenter presenter;
+
+  private View btnEmail;
+  private View waitingView;
 
   @Override
   protected int getLayout() {
@@ -32,37 +35,22 @@ public class LoginFragment extends AbstractServerConfigFragment {
   @Override
   public void onCreate(@Nullable Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
-    authProvidersObserver = RealmStore.get(hostname)
-        .createListObserver(realm -> realm.where(RealmMeteorLoginServiceConfiguration.class).findAll())
-        .setOnUpdateListener(this::onRenderAuthProviders);
+
+    presenter = new LoginPresenter(
+        new RealmLoginServiceConfigurationRepository(hostname),
+        new RealmPublicSettingRepository(hostname),
+        new MethodCallHelper(getContext(), hostname)
+    );
   }
 
   @Override
   protected void onSetupView() {
-    final View btnEmail = rootView.findViewById(R.id.btn_login_with_email);
+    btnEmail = rootView.findViewById(R.id.btn_login_with_email);
     final TextView txtUsername = (TextView) rootView.findViewById(R.id.editor_username);
     final TextView txtPasswd = (TextView) rootView.findViewById(R.id.editor_passwd);
-    final View waitingView = rootView.findViewById(R.id.waiting);
-    btnEmail.setOnClickListener(view -> {
-      final CharSequence username = txtUsername.getText();
-      final CharSequence passwd = txtPasswd.getText();
-      if (TextUtils.isEmpty(username) || TextUtils.isEmpty(passwd)) {
-        return;
-      }
-      view.setEnabled(false);
-      waitingView.setVisibility(View.VISIBLE);
-
-      new MethodCallHelper(getContext(), hostname)
-          .loginWithEmail(username.toString(), passwd.toString())
-          .continueWith(task -> {
-            if (task.isFaulted()) {
-              showError(task.getError().getMessage());
-              view.setEnabled(true);
-              waitingView.setVisibility(View.GONE);
-            }
-            return null;
-          });
-    });
+    waitingView = rootView.findViewById(R.id.waiting);
+    btnEmail.setOnClickListener(
+        view -> presenter.login(txtUsername.getText().toString(), txtPasswd.getText().toString()));
 
     final View btnUserRegistration = rootView.findViewById(R.id.btn_user_registration);
     btnUserRegistration.setOnClickListener(view -> UserRegistrationDialogFragment.create(hostname,
@@ -70,11 +58,25 @@ public class LoginFragment extends AbstractServerConfigFragment {
         .show(getFragmentManager(), UserRegistrationDialogFragment.class.getSimpleName()));
   }
 
-  private void showError(String errString) {
-    Snackbar.make(rootView, errString, Snackbar.LENGTH_SHORT).show();
+  @Override
+  public void showLoader() {
+    btnEmail.setEnabled(false);
+    waitingView.setVisibility(View.VISIBLE);
+  }
+
+  @Override
+  public void hideLoader() {
+    btnEmail.setEnabled(true);
+    waitingView.setVisibility(View.GONE);
   }
 
-  private void onRenderAuthProviders(List<RealmMeteorLoginServiceConfiguration> authProviders) {
+  @Override
+  public void showError(String message) {
+    Snackbar.make(rootView, message, Snackbar.LENGTH_SHORT).show();
+  }
+
+  @Override
+  public void showLoginServices(List<LoginServiceConfiguration> loginServiceList) {
     HashMap<String, View> viewMap = new HashMap<>();
     HashMap<String, Boolean> supportedMap = new HashMap<>();
     for (OAuthProviderInfo info : OAuthProviderInfo.LIST) {
@@ -82,7 +84,7 @@ public class LoginFragment extends AbstractServerConfigFragment {
       supportedMap.put(info.serviceName, false);
     }
 
-    for (RealmMeteorLoginServiceConfiguration authProvider : authProviders) {
+    for (LoginServiceConfiguration authProvider : loginServiceList) {
       for (OAuthProviderInfo info : OAuthProviderInfo.LIST) {
         if (!supportedMap.get(info.serviceName)
             && info.serviceName.equals(authProvider.getService())) {
@@ -116,12 +118,12 @@ public class LoginFragment extends AbstractServerConfigFragment {
   @Override
   public void onResume() {
     super.onResume();
-    authProvidersObserver.sub();
+    presenter.bindView(this);
   }
 
   @Override
   public void onPause() {
-    authProvidersObserver.unsub();
+    presenter.release();
     super.onPause();
   }
 }

app/src/main/java/chat/rocket/android/fragment/server_config/LoginPresenter.java

+package chat.rocket.android.fragment.server_config;
+
+import android.support.annotation.NonNull;
+
+import com.fernandocejas.arrow.optional.Optional;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+
+import bolts.Task;
+import chat.rocket.android.BackgroundLooper;
+import chat.rocket.android.api.MethodCallHelper;
+import chat.rocket.android.helper.TextUtils;
+import chat.rocket.android.shared.BasePresenter;
+import chat.rocket.core.PublicSettingsConstants;
+import chat.rocket.core.models.PublicSetting;
+import chat.rocket.core.repositories.LoginServiceConfigurationRepository;
+import chat.rocket.core.repositories.PublicSettingRepository;
+
+public class LoginPresenter extends BasePresenter<LoginContract.View>
+    implements LoginContract.Presenter {
+
+  private final LoginServiceConfigurationRepository loginServiceConfigurationRepository;
+  private final PublicSettingRepository publicSettingRepository;
+  private final MethodCallHelper methodCallHelper;
+
+  public LoginPresenter(LoginServiceConfigurationRepository loginServiceConfigurationRepository,
+                        PublicSettingRepository publicSettingRepository,
+                        MethodCallHelper methodCallHelper) {
+    this.loginServiceConfigurationRepository = loginServiceConfigurationRepository;
+    this.publicSettingRepository = publicSettingRepository;
+    this.methodCallHelper = methodCallHelper;
+  }
+
+  @Override
+  public void bindView(@NonNull LoginContract.View view) {
+    super.bindView(view);
+
+    getLoginServices();
+  }
+
+  @Override
+  public void login(String username, String password) {
+    if (TextUtils.isEmpty(username) || TextUtils.isEmpty(password)) {
+      return;
+    }
+
+    view.showLoader();
+
+    addSubscription(
+        publicSettingRepository.getById(PublicSettingsConstants.LDAP.ENABLE)
+            .subscribeOn(AndroidSchedulers.from(BackgroundLooper.get()))
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe(publicSettingOptional -> doLogin(username, password, publicSettingOptional))
+    );
+  }
+
+  private void getLoginServices() {
+    addSubscription(
+        loginServiceConfigurationRepository.getAll()
+            .subscribeOn(AndroidSchedulers.from(BackgroundLooper.get()))
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe(
+                loginServiceConfigurations -> view.showLoginServices(loginServiceConfigurations))
+    );
+  }
+
+  private void doLogin(String username, String password, Optional<PublicSetting> optional) {
+    call(username, password, optional)
+        .continueWith(task -> {
+          if (task.isFaulted()) {
+            view.hideLoader();
+            view.showError(task.getError().getMessage());
+          }
+          return null;
+        });
+  }
+
+  private Task<Void> call(String username, String password, Optional<PublicSetting> optional) {
+    if (optional.isPresent() && optional.get().getValueAsBoolean()) {
+      return methodCallHelper.loginWithLdap(username, password);
+    }
+
+    return methodCallHelper.loginWithEmail(username, password);
+  }
+}

app/src/main/java/chat/rocket/android/fragment/server_config/RetryLoginContract.java

+package chat.rocket.android.fragment.server_config;
+
+import chat.rocket.android.shared.BaseContract;
+
+public interface RetryLoginContract {
+
+  interface View extends BaseContract.View {
+
+    void showRetry(String token);
+
+    void showError(String message);
+
+    void showLoader();
+
+    void hideLoader();
+  }
+
+  interface Presenter extends BaseContract.Presenter<View> {
+
+    void onLogin(String token);
+  }
+}

app/src/main/java/chat/rocket/android/fragment/server_config/RetryLoginFragment.java

@@ -7,16 +7,20 @@ import android.widget.TextView;
 
 import chat.rocket.android.R;
 import chat.rocket.android.api.MethodCallHelper;
-import chat.rocket.android.helper.TextUtils;
-import chat.rocket.persistence.realm.models.internal.RealmSession;
-import chat.rocket.persistence.realm.RealmObjectObserver;
-import chat.rocket.persistence.realm.RealmStore;
+import chat.rocket.core.interactors.SessionInteractor;
+import chat.rocket.persistence.realm.repositories.RealmSessionRepository;
 
 /**
  * Login screen.
  */
-public class RetryLoginFragment extends AbstractServerConfigFragment {
-  private RealmObjectObserver<RealmSession> sessionObserver;
+public class RetryLoginFragment extends AbstractServerConfigFragment
+    implements RetryLoginContract.View {
+
+  private RetryLoginContract.Presenter presenter;
+
+  private View btnRetry;
+  private View waitingView;
+  private TextView txtError;
 
   @Override
   protected int getLayout() {
@@ -26,56 +30,52 @@ public class RetryLoginFragment extends AbstractServerConfigFragment {
   @Override
   public void onCreate(@Nullable Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
-    sessionObserver = RealmStore.get(hostname)
-        .createObjectObserver(RealmSession::queryDefaultSession)
-        .setOnUpdateListener(this::onRenderServerConfigSession);
+
+    presenter = new RetryLoginPresenter(
+        new SessionInteractor(new RealmSessionRepository(hostname)),
+        new MethodCallHelper(getContext(), hostname)
+    );
   }
 
   @Override
-  protected void onSetupView() {
+  public void onResume() {
+    super.onResume();
+    presenter.bindView(this);
   }
 
-  private void onRenderServerConfigSession(RealmSession session) {
-    if (session == null) {
-      return;
-    }
+  @Override
+  public void onPause() {
+    presenter.release();
+    super.onPause();
+  }
 
-    final String token = session.getToken();
-    if (!TextUtils.isEmpty(token)) {
-      final View btnRetry = rootView.findViewById(R.id.btn_retry_login);
-      final View waitingView = rootView.findViewById(R.id.waiting);
-      waitingView.setVisibility(View.GONE);
-      btnRetry.setOnClickListener(view -> {
-        view.setEnabled(false);
-        waitingView.setVisibility(View.VISIBLE);
+  @Override
+  protected void onSetupView() {
+    btnRetry = rootView.findViewById(R.id.btn_retry_login);
+    waitingView = rootView.findViewById(R.id.waiting);
+    txtError = (TextView) rootView.findViewById(R.id.txt_error_description);
+  }
 
-        new MethodCallHelper(getContext(), hostname).loginWithToken(token)
-            .continueWith(task -> {
-              if (task.isFaulted()) {
-                view.setEnabled(true);
-                waitingView.setVisibility(View.GONE);
-              }
-              return null;
-            });
-      });
-    }
+  @Override
+  public void showRetry(String token) {
+    waitingView.setVisibility(View.GONE);
+    btnRetry.setOnClickListener(view -> presenter.onLogin(token));
+  }
 
-    final String error = session.getError();
-    final TextView txtError = (TextView) rootView.findViewById(R.id.txt_error_description);
-    if (!TextUtils.isEmpty(error)) {
-      txtError.setText(error);
-    }
+  @Override
+  public void showError(String message) {
+    txtError.setText(message);
   }
 
   @Override
-  public void onResume() {
-    super.onResume();
-    sessionObserver.sub();
+  public void showLoader() {
+    btnRetry.setEnabled(false);
+    waitingView.setVisibility(View.VISIBLE);
   }
 
   @Override
-  public void onPause() {
-    sessionObserver.unsub();
-    super.onPause();
+  public void hideLoader() {
+    btnRetry.setEnabled(true);
+    waitingView.setVisibility(View.GONE);
   }
 }

app/src/main/java/chat/rocket/android/fragment/server_config/RetryLoginPresenter.java

+package chat.rocket.android.fragment.server_config;
+
+import android.support.annotation.NonNull;
+
+import com.fernandocejas.arrow.optional.Optional;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+
+import chat.rocket.android.BackgroundLooper;
+import chat.rocket.android.api.MethodCallHelper;
+import chat.rocket.android.helper.TextUtils;
+import chat.rocket.android.shared.BasePresenter;
+import chat.rocket.core.interactors.SessionInteractor;
+import chat.rocket.core.models.Session;
+
+public class RetryLoginPresenter extends BasePresenter<RetryLoginContract.View>
+    implements RetryLoginContract.Presenter {
+
+  private final SessionInteractor sessionInteractor;
+  private final MethodCallHelper methodCallHelper;
+
+  public RetryLoginPresenter(SessionInteractor sessionInteractor,
+                             MethodCallHelper methodCallHelper) {
+    this.sessionInteractor = sessionInteractor;
+    this.methodCallHelper = methodCallHelper;
+  }
+
+  @Override
+  public void bindView(@NonNull RetryLoginContract.View view) {
+    super.bindView(view);
+
+    subscribeToDefaultSession();
+  }
+
+  @Override
+  public void onLogin(String token) {
+    view.showLoader();
+
+    methodCallHelper.loginWithToken(token)
+        .continueWith(task -> {
+          if (task.isFaulted()) {
+            view.hideLoader();
+          }
+          return null;
+        });
+  }
+
+  private void subscribeToDefaultSession() {
+    addSubscription(
+        sessionInteractor.getDefault()
+            .subscribeOn(AndroidSchedulers.from(BackgroundLooper.get()))
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe(this::onSession)
+    );
+  }
+
+  private void onSession(Optional<Session> sessionOptional) {
+    if (!sessionOptional.isPresent()) {
+      return;
+    }
+
+    final Session session = sessionOptional.get();
+
+    final String token = session.getToken();
+    if (!TextUtils.isEmpty(token)) {
+      view.showRetry(token);
+    }
+
+    final String errorMessage = session.getError();
+    if (!TextUtils.isEmpty(errorMessage)) {
+      view.showError(errorMessage);
+    }
+  }
+}

app/src/main/java/chat/rocket/android/helper/GcmPushSettingHelper.java

@@ -15,13 +15,11 @@ public class GcmPushSettingHelper {
   public static RealmResults<RealmPublicSetting> queryForGcmPushEnabled(Realm realm) {
     return realm.where(RealmPublicSetting.class)
         .equalTo(RealmPublicSetting.ID, PublicSettingsConstants.Push.ENABLE)
-        .or()
-        .equalTo(RealmPublicSetting.ID, PublicSettingsConstants.Push.GCM_PROJECT_NUMBER)
         .findAll();
   }
 
   public static boolean isGcmPushEnabled(List<RealmPublicSetting> results) {
-    return isPushEnabled(results) && hasValidGcmConfig(results);
+    return isPushEnabled(results);
   }
 
   private static boolean isPushEnabled(List<RealmPublicSetting> results) {
@@ -32,13 +30,4 @@ public class GcmPushSettingHelper {
     }
     return false;
   }
-
-  private static boolean hasValidGcmConfig(List<RealmPublicSetting> results) {
-    for (RealmPublicSetting setting : results) {
-      if (PublicSettingsConstants.Push.GCM_PROJECT_NUMBER.equals(setting.getId())) {
-        return !TextUtils.isEmpty(setting.getValue());
-      }
-    }
-    return false;
-  }
 }

app/src/main/java/chat/rocket/android/service/observer/GcmPushRegistrationObserver.java

@@ -10,6 +10,7 @@ import io.realm.RealmResults;
 import java.io.IOException;
 import java.util.List;
 import bolts.Task;
+import chat.rocket.android.R;
 import chat.rocket.android.RocketChatCache;
 import chat.rocket.android.api.RaixPushHelper;
 import chat.rocket.android.helper.LogIfError;
@@ -66,10 +67,7 @@ public class GcmPushRegistrationObserver extends AbstractModelObserver<GcmPushRe
   }
 
   private Task<Void> registerGcmTokenForServer() throws IOException {
-    final String senderId = RealmPublicSetting
-        .getString(realmHelper, PublicSettingsConstants.Push.GCM_PROJECT_NUMBER, "").trim();
-
-    final String gcmToken = getGcmToken(senderId);
+    final String gcmToken = getGcmToken(getSenderId());
     final RealmUser currentUser = realmHelper.executeTransactionForRead(realm ->
         RealmUser.queryCurrentUser(realm).findFirst());
     final String userId = currentUser != null ? currentUser.getId() : null;
@@ -84,4 +82,15 @@ public class GcmPushRegistrationObserver extends AbstractModelObserver<GcmPushRe
         .getToken(senderId, GoogleCloudMessaging.INSTANCE_ID_SCOPE, null);
   }
 
+  private String getSenderId() {
+    final String senderId = RealmPublicSetting
+        .getString(realmHelper, PublicSettingsConstants.Push.GCM_PROJECT_NUMBER, "").trim();
+
+    if (senderId.length() != 0) {
+      return senderId;
+    }
+
+    return context.getString(R.string.gcm_sender_id);
+  }
+
 }

app/src/main/res/values/apis_keys.xml

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="gcm_sender_id">YOUR-SENDER-ID</string>
+</resources>
\ No newline at end of file

persistence-realm/src/main/java/chat/rocket/persistence/realm/models/ddp/RealmMeteorLoginServiceConfiguration.java

@@ -3,6 +3,8 @@ package chat.rocket.persistence.realm.models.ddp;
 import io.realm.RealmObject;
 import io.realm.annotations.PrimaryKey;
 
+import chat.rocket.core.models.LoginServiceConfiguration;
+
 /**
  * subscription model for "meteor_accounts_loginServiceConfiguration".
  */
@@ -19,9 +21,9 @@ public class RealmMeteorLoginServiceConfiguration
 
   @PrimaryKey private String _id;
   private String service;
-  private String consumerKey; //for Twitter
-  private String appId; //for Facebook
-  private String clientId; //for other auth providers
+  private String consumerKey; // for Twitter
+  private String appId; // for Facebook
+  private String clientId; // for other auth providers
 
   public String getId() {
     return _id;
@@ -62,4 +64,24 @@ public class RealmMeteorLoginServiceConfiguration
   public void setClientId(String clientId) {
     this.clientId = clientId;
   }
+
+  public LoginServiceConfiguration asLoginServiceConfiguration() {
+    return LoginServiceConfiguration.builder()
+        .setId(_id)
+        .setService(service)
+        .setKey(getServiceKey())
+        .build();
+  }
+
+  private String getServiceKey() {
+    if (consumerKey != null) {
+      return consumerKey;
+    }
+
+    if (appId != null) {
+      return appId;
+    }
+
+    return clientId;
+  }
 }

persistence-realm/src/main/java/chat/rocket/persistence/realm/models/ddp/RealmPublicSetting.java

@@ -7,6 +7,7 @@ import org.json.JSONException;
 import org.json.JSONObject;
 
 import chat.rocket.core.JsonConstants;
+import chat.rocket.core.models.PublicSetting;
 import chat.rocket.persistence.realm.RealmHelper;
 
 /**
@@ -113,4 +114,14 @@ public class RealmPublicSetting extends RealmObject {
   public void setMeta(String meta) {
     this.meta = meta;
   }
+
+  public PublicSetting asPublicSetting() {
+    return PublicSetting.builder()
+        .setId(_id)
+        .setGroup(group)
+        .setType(type)
+        .setValue(value)
+        .setUpdatedAt(_updatedAt)
+        .build();
+  }
 }

persistence-realm/src/main/java/chat/rocket/persistence/realm/repositories/RealmLoginServiceConfigurationRepository.java

+package chat.rocket.persistence.realm.repositories;
+
+import android.os.Looper;
+import android.support.v4.util.Pair;
+import com.fernandocejas.arrow.optional.Optional;
+import io.reactivex.Flowable;
+import io.reactivex.Single;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.realm.RealmResults;
+
+import java.util.ArrayList;
+import java.util.List;
+import chat.rocket.core.models.LoginServiceConfiguration;
+import chat.rocket.core.repositories.LoginServiceConfigurationRepository;
+import chat.rocket.persistence.realm.RealmStore;
+import chat.rocket.persistence.realm.models.ddp.RealmMeteorLoginServiceConfiguration;
+import hu.akarnokd.rxjava.interop.RxJavaInterop;
+
+public class RealmLoginServiceConfigurationRepository extends RealmRepository
+    implements LoginServiceConfigurationRepository {
+
+  private final String hostname;
+
+  public RealmLoginServiceConfigurationRepository(String hostname) {
+    this.hostname = hostname;
+  }
+
+  @Override
+  public Single<Optional<LoginServiceConfiguration>> getByName(String serviceName) {
+    return Single.defer(() -> Flowable.using(
+        () -> new Pair<>(RealmStore.getRealm(hostname), Looper.myLooper()),
+        pair -> RxJavaInterop.toV2Flowable(
+            pair.first.where(RealmMeteorLoginServiceConfiguration.class)
+                .equalTo(RealmMeteorLoginServiceConfiguration.SERVICE, serviceName)
+                .findAll()
+                .<RealmResults<RealmMeteorLoginServiceConfiguration>>asObservable()),
+        pair -> close(pair.first, pair.second)
+    )
+        .unsubscribeOn(AndroidSchedulers.from(Looper.myLooper()))
+        .filter(it -> it.isLoaded() && it.isValid() && it.size() > 0)
+        .map(it -> Optional.of(it.get(0).asLoginServiceConfiguration()))
+        .first(Optional.absent()));
+  }
+
+  @Override
+  public Flowable<List<LoginServiceConfiguration>> getAll() {
+    return Flowable.defer(() -> Flowable.using(
+        () -> new Pair<>(RealmStore.getRealm(hostname), Looper.myLooper()),
+        pair -> RxJavaInterop
+            .toV2Flowable(pair.first.where(RealmMeteorLoginServiceConfiguration.class)
+                .findAll()
+                .asObservable()),
+        pair -> close(pair.first, pair.second)
+    )
+        .unsubscribeOn(AndroidSchedulers.from(Looper.myLooper()))
+        .filter(it -> it.isLoaded() && it.isValid())
+        .map(this::toList));
+  }
+
+  private List<LoginServiceConfiguration> toList(
+      RealmResults<RealmMeteorLoginServiceConfiguration> realmConfigurations) {
+    final int total = realmConfigurations.size();
+    final List<LoginServiceConfiguration> serviceConfigurations = new ArrayList<>(total);
+
+    for (int i = 0; i < total; i++) {
+      serviceConfigurations.add(realmConfigurations.get(i).asLoginServiceConfiguration());
+    }
+
+    return serviceConfigurations;
+  }
+}

persistence-realm/src/main/java/chat/rocket/persistence/realm/repositories/RealmPublicSettingRepository.java

+package chat.rocket.persistence.realm.repositories;
+
+import android.os.Looper;
+import android.support.v4.util.Pair;
+import com.fernandocejas.arrow.optional.Optional;
+import io.reactivex.Flowable;
+import io.reactivex.Single;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.realm.RealmResults;
+
+import chat.rocket.core.models.PublicSetting;
+import chat.rocket.core.repositories.PublicSettingRepository;
+import chat.rocket.persistence.realm.RealmStore;
+import chat.rocket.persistence.realm.models.ddp.RealmPublicSetting;
+import hu.akarnokd.rxjava.interop.RxJavaInterop;
+
+public class RealmPublicSettingRepository extends RealmRepository
+    implements PublicSettingRepository {
+
+  private final String hostname;
+
+  public RealmPublicSettingRepository(String hostname) {
+    this.hostname = hostname;
+  }
+
+  @Override
+  public Single<Optional<PublicSetting>> getById(String id) {
+    return Single.defer(() -> Flowable.using(
+        () -> new Pair<>(RealmStore.getRealm(hostname), Looper.myLooper()),
+        pair -> RxJavaInterop.toV2Flowable(
+            pair.first.where(RealmPublicSetting.class)
+                .equalTo(RealmPublicSetting.ID, id)
+                .findAll()
+                .<RealmResults<RealmPublicSetting>>asObservable()),
+        pair -> close(pair.first, pair.second)
+    )
+        .unsubscribeOn(AndroidSchedulers.from(Looper.myLooper()))
+        .filter(it -> it.isLoaded() && it.isValid() && it.size() > 0)
+        .map(it -> Optional.of(it.get(0).asPublicSetting()))
+        .first(Optional.absent()));
+  }
+}

rocket-chat-core/src/main/java/chat/rocket/core/models/LoginServiceConfiguration.java

+package chat.rocket.core.models;
+
+import com.google.auto.value.AutoValue;
+
+@AutoValue
+public abstract class LoginServiceConfiguration {
+
+  public abstract String getId();
+
+  public abstract String getService();
+
+  public abstract String getKey();
+
+  public static Builder builder() {
+    return new AutoValue_LoginServiceConfiguration.Builder();
+  }
+
+  @AutoValue.Builder
+  public abstract static class Builder {
+
+    public abstract Builder setId(String id);
+
+    public abstract Builder setService(String service);
+
+    public abstract Builder setKey(String key);
+
+    public abstract LoginServiceConfiguration build();
+  }
+}

rocket-chat-core/src/main/java/chat/rocket/core/models/PublicSetting.java

+package chat.rocket.core.models;
+
+import com.google.auto.value.AutoValue;
+
+import javax.annotation.Nullable;
+
+@AutoValue
+public abstract class PublicSetting {
+
+  public abstract String getId();
+
+  @Nullable
+  public abstract String getGroup();
+
+  @Nullable
+  public abstract String getType();
+
+  public abstract String getValue();
+
+  public abstract long getUpdatedAt();
+
+  public boolean getValueAsBoolean() {
+    return Boolean.parseBoolean(getValue());
+  }
+
+  public static Builder builder() {
+    return new AutoValue_PublicSetting.Builder();
+  }
+
+  @AutoValue.Builder
+  public abstract static class Builder {
+
+    public abstract Builder setId(String id);
+
+    public abstract Builder setGroup(String group);
+
+    public abstract Builder setType(String type);
+
+    public abstract Builder setValue(String value);
+
+    public abstract Builder setUpdatedAt(long updatedAt);
+
+    public abstract PublicSetting build();
+  }
+}

rocket-chat-core/src/main/java/chat/rocket/core/repositories/LoginServiceConfigurationRepository.java

+package chat.rocket.core.repositories;
+
+import com.fernandocejas.arrow.optional.Optional;
+import io.reactivex.Flowable;
+import io.reactivex.Single;
+
+import java.util.List;
+import chat.rocket.core.models.LoginServiceConfiguration;
+
+public interface LoginServiceConfigurationRepository {
+
+  Single<Optional<LoginServiceConfiguration>> getByName(String serviceName);
+
+  Flowable<List<LoginServiceConfiguration>> getAll();
+}

rocket-chat-core/src/main/java/chat/rocket/core/repositories/PublicSettingRepository.java

+package chat.rocket.core.repositories;
+
+import com.fernandocejas.arrow.optional.Optional;
+import io.reactivex.Single;
+
+import chat.rocket.core.models.PublicSetting;
+
+public interface PublicSettingRepository {
+
+  Single<Optional<PublicSetting>> getById(String id);
+}