fix(login): prompt to retry logging in. Closes #1658 #1591 #1544 1608.

HMCLCore/src/main/java/org/jackhuang/hmcl/auth/Account.java

@@ -64,7 +64,7 @@ public abstract class Account implements Observable {
      * Play offline.
      * @return the specific offline player's info.
      */
-    public abstract Optional<AuthInfo> playOffline() throws AuthenticationException;
+    public abstract AuthInfo playOffline() throws AuthenticationException;
 
     public abstract Map<Object, Object> toStorage();
 

HMCLCore/src/main/java/org/jackhuang/hmcl/auth/NotLoggedInException.java

@@ -0,0 +1,21 @@
+/*
+ * Hello Minecraft! Launcher
+ * Copyright (C) 2020  huangyuhui <huanghongxun2008@126.com> and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.jackhuang.hmcl.auth;
+
+public class NotLoggedInException extends AuthenticationException {
+}

HMCLCore/src/main/java/org/jackhuang/hmcl/auth/authlibinjector/AuthlibInjectorAccount.java

@@ -17,10 +17,7 @@
  */
 package org.jackhuang.hmcl.auth.authlibinjector;
 
-import org.jackhuang.hmcl.auth.AuthInfo;
-import org.jackhuang.hmcl.auth.AuthenticationException;
-import org.jackhuang.hmcl.auth.CharacterSelector;
-import org.jackhuang.hmcl.auth.ServerDisconnectException;
+import org.jackhuang.hmcl.auth.*;
 import org.jackhuang.hmcl.auth.yggdrasil.CompleteGameProfile;
 import org.jackhuang.hmcl.auth.yggdrasil.TextureType;
 import org.jackhuang.hmcl.auth.yggdrasil.YggdrasilAccount;
@@ -66,15 +63,15 @@ public class AuthlibInjectorAccount extends YggdrasilAccount {
     }
 
     @Override
-    public Optional<AuthInfo> playOffline() {
-        Optional<AuthInfo> auth = super.playOffline();
+    public AuthInfo playOffline() throws AuthenticationException {
+        AuthInfo auth = super.playOffline();
         Optional<AuthlibInjectorArtifactInfo> artifact = downloader.getArtifactInfoImmediately();
         Optional<String> prefetchedMeta = server.getMetadataResponse();
 
-        if (auth.isPresent() && artifact.isPresent() && prefetchedMeta.isPresent()) {
-            return Optional.of(new AuthlibInjectorAuthInfo(auth.get(), artifact.get(), server, prefetchedMeta.get()));
+        if (artifact.isPresent() && prefetchedMeta.isPresent()) {
+            return new AuthlibInjectorAuthInfo(auth, artifact.get(), server, prefetchedMeta.get());
         } else {
-            return Optional.empty();
+            throw new NotLoggedInException();
         }
     }
 

HMCLCore/src/main/java/org/jackhuang/hmcl/auth/microsoft/MicrosoftAccount.java

@@ -117,8 +117,8 @@ public class MicrosoftAccount extends OAuthAccount {
     }
 
     @Override
-    public Optional<AuthInfo> playOffline() {
-        return Optional.of(session.toAuthInfo());
+    public AuthInfo playOffline() {
+        return session.toAuthInfo();
     }
 
     @Override

HMCLCore/src/main/java/org/jackhuang/hmcl/auth/offline/OfflineAccount.java

@@ -180,8 +180,8 @@ public class OfflineAccount extends Account {
     }
 
     @Override
-    public Optional<AuthInfo> playOffline() throws AuthenticationException {
-        return Optional.of(logIn());
+    public AuthInfo playOffline() throws AuthenticationException {
+        return logIn();
     }
 
     @Override

HMCLCore/src/main/java/org/jackhuang/hmcl/auth/yggdrasil/YggdrasilAccount.java

@@ -161,8 +161,8 @@ public class YggdrasilAccount extends ClassicAccount {
     }
 
     @Override
-    public Optional<AuthInfo> playOffline() {
-        return Optional.of(session.toAuthInfo());
+    public AuthInfo playOffline() throws AuthenticationException {
+        return session.toAuthInfo();
     }
 
     @Override