Add null check and change some formatting

src/main/java/org/asamk/signal/ReceiveMessageHandler.java

@@ -449,7 +449,7 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {
             System.out.println("Quote: (" + quote.getId() + ")");
             System.out.println(" Author: " + m.resolveSignalServiceAddress(quote.getAuthor()).getLegacyIdentifier());
             System.out.println(" Text: " + quote.getText());
-            if (quote.getMentions().size() > 0) {
+            if (quote.getMentions() != null && quote.getMentions().size() > 0) {
                 System.out.println(" Mentions: ");
                 for (SignalServiceDataMessage.Mention mention : quote.getMentions()) {
                     printMention(mention, m);
@@ -488,15 +488,8 @@ public class ReceiveMessageHandler implements Manager.ReceiveMessageHandler {
     }
 
     private void printMention(SignalServiceDataMessage.Mention mention, Manager m) {
-        System.out.println("- "
+        System.out.println("- " + m.resolveSignalServiceAddress(new SignalServiceAddress(mention.getUuid(), null))
-                + m.resolveSignalServiceAddress(
+                .getLegacyIdentifier() + ": " + mention.getStart() + " (length: " + mention.getLength() + ")");
-                        new SignalServiceAddress(mention.getUuid(), null)
-                ).getLegacyIdentifier()
-                + ": "
-                + mention.getStart()
-                + " (length: "
-                + mention.getLength()
-                + ")");
     }
 
     private void printAttachment(SignalServiceAttachment attachment) {

src/main/java/org/asamk/signal/json/JsonDataMessage.java

@@ -2,12 +2,10 @@ package org.asamk.signal.json;
 
 import org.asamk.Signal;
 import org.asamk.signal.manager.Manager;
-import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
 
-import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -45,20 +43,22 @@ class JsonDataMessage {
             this.quote = new JsonQuote(dataMessage.getQuote().get(), m);
         }
         if (dataMessage.getMentions().isPresent()) {
-            this.mentions = new ArrayList<>(dataMessage.getMentions().get().size());
+            this.mentions = dataMessage.getMentions()
-            for (SignalServiceDataMessage.Mention mention : dataMessage.getMentions().get()) {
+                    .get()
-                this.mentions.add(new JsonMention(mention, m));
+                    .stream()
-            }
+                    .map(mention -> new JsonMention(mention, m))
+                    .collect(Collectors.toList());
         } else {
-            this.mentions = new ArrayList<>();
+            this.mentions = List.of();
         }
         if (dataMessage.getAttachments().isPresent()) {
-            this.attachments = new ArrayList<>(dataMessage.getAttachments().get().size());
+            this.attachments = dataMessage.getAttachments()
-            for (SignalServiceAttachment attachment : dataMessage.getAttachments().get()) {
+                    .get()
-                this.attachments.add(new JsonAttachment(attachment));
+                    .stream()
-            }
+                    .map(JsonAttachment::new)
+                    .collect(Collectors.toList());
         } else {
-            this.attachments = new ArrayList<>();
+            this.attachments = List.of();
         }
     }
 

src/main/java/org/asamk/signal/json/JsonMention.java

@@ -11,12 +11,9 @@ public class JsonMention {
     int length;
 
     JsonMention(SignalServiceDataMessage.Mention mention, Manager m) {
-        this.name = m.resolveSignalServiceAddress(
+        this.name = m.resolveSignalServiceAddress(new SignalServiceAddress(mention.getUuid(), null))
-                new SignalServiceAddress(mention.getUuid(), null)
+                .getLegacyIdentifier();
-        ).getLegacyIdentifier();
         this.start = mention.getStart();
         this.length = mention.getLength();
-
     }
-
 }

src/main/java/org/asamk/signal/json/JsonQuote.java

@@ -5,6 +5,7 @@ import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 public class JsonQuote {
 
@@ -20,23 +21,20 @@ public class JsonQuote {
         this.author = m.resolveSignalServiceAddress(quote.getAuthor()).getLegacyIdentifier();
         this.text = quote.getText();
 
-        if (quote.getMentions().size() > 0) {
+        if (quote.getMentions() != null && quote.getMentions().size() > 0) {
-            this.mentions = new ArrayList<>(quote.getMentions().size());
+            this.mentions = quote.getMentions()
-
+                    .stream()
-            for (SignalServiceDataMessage.Mention quotedMention: quote.getMentions()){
+                    .map(quotedMention -> new JsonMention(quotedMention, m))
-                this.mentions.add(new JsonMention(quotedMention, m));
+                    .collect(Collectors.toList());
-            }
         }
 
         if (quote.getAttachments().size() > 0) {
-            this.attachments = new ArrayList<>(quote.getAttachments().size());
+            this.attachments = quote.getAttachments()
-
+                    .stream()
-            for (SignalServiceDataMessage.Quote.QuotedAttachment quotedAttachment : quote.getAttachments()) {
+                    .map(JsonQuotedAttachment::new)
-                this.attachments.add(new JsonQuotedAttachment(quotedAttachment));
+                    .collect(Collectors.toList());
-            }
         } else {
             this.attachments = new ArrayList<>();
         }
     }
-
 }

src/main/java/org/asamk/signal/json/JsonQuotedAttachment.java

@@ -13,8 +13,7 @@ public class JsonQuotedAttachment {
         filename = quotedAttachment.getFileName();
         if (quotedAttachment.getThumbnail() != null) {
             thumbnail = new JsonAttachment(quotedAttachment.getThumbnail());
-        }
+        } else {
-        else {
             thumbnail = null;
         }
     }