Show inbox count on navigation drawer

app/src/main/java/eu/toldi/infinityforlemmy/activities/MainActivity.java

@@ -1076,16 +1076,25 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
 
     private void loadUserData() {
         if (!mFetchUserInfoSuccess) {
+            FetchUserData.fetchUnreadCount(mRetrofit.getRetrofit(), mAccessToken, new FetchUserData.FetchUserUnreadCountListener() {
+                @Override
+                public void onFetchUserUnreadCountSuccess(int inboxCount) {
+                    MainActivity.this.inboxCount = inboxCount;
+                    if (adapter != null) {
+                        adapter.setInboxCount(inboxCount);
+                    }
+                }
+
+                @Override
+                public void onFetchUserUnreadCountFailed() {
+                }
+            });
             FetchUserData.fetchUserData(mRedditDataRoomDatabase, mRetrofit.getRetrofit(), mAccessToken,
                     mAccountName, new FetchUserData.FetchUserDataListener() {
                         @Override
                         public void onFetchUserDataSuccess(UserData userData, int inboxCount) {
-                    MainActivity.this.inboxCount = inboxCount;
                             mAccountName = userData.getName();
                             mFetchUserInfoSuccess = true;
-                    if (adapter != null) {
-                        adapter.setInboxCount(inboxCount);
-                    }
                         }
 
                         @Override

app/src/main/java/eu/toldi/infinityforlemmy/apis/LemmyAPI.java

@@ -1,5 +1,7 @@
 package eu.toldi.infinityforlemmy.apis;
 
+import androidx.annotation.NonNull;
+
 import com.google.common.util.concurrent.ListenableFuture;
 
 import eu.toldi.infinityforlemmy.dto.AccountLoginDTO;
@@ -15,6 +17,7 @@ import eu.toldi.infinityforlemmy.dto.ReadPostDTO;
 import eu.toldi.infinityforlemmy.dto.SaveCommentDTO;
 import eu.toldi.infinityforlemmy.dto.SavePostDTO;
 import eu.toldi.infinityforlemmy.dto.SubmitPostDTO;
+import eu.toldi.infinityforlemmy.message.MessageCount;
 import okhttp3.MultipartBody;
 import retrofit2.Call;
 import retrofit2.Response;
@@ -45,6 +48,9 @@ public interface LemmyAPI {
     @GET("api/v3/private_message/list")
     Call<String> privateMessageList(@Query("page") Integer page, @Query("limit") Integer limit, @Query("unread_only") boolean unread_only, @Query("auth") String access_token);
 
+    @GET("api/v3/user/unread_count")
+    Call<MessageCount> userUnreadCount(@NonNull @Query("auth") String access_token);
+
     @GET("api/v3/community")
     Call<String> communityInfo(@Query("name") String name, @Query("auth") String access_token);
 

app/src/main/java/eu/toldi/infinityforlemmy/message/MessageCount.java

@@ -0,0 +1,38 @@
+package eu.toldi.infinityforlemmy.message;
+
+public class MessageCount {
+
+    /*
+    Example:
+    {
+  "replies": 1,
+  "mentions": 0,
+  "private_messages": 0
+}
+     */
+    public int replies;
+    public int mentions;
+    public int private_messages;
+
+    public MessageCount(int replies, int mentions, int private_messages) {
+        this.replies = replies;
+        this.mentions = mentions;
+        this.private_messages = private_messages;
+    }
+
+    public int getReplies() {
+        return replies;
+    }
+
+    public int getMentions() {
+        return mentions;
+    }
+
+    public int getPrivate_messages() {
+        return private_messages;
+    }
+
+    public int getSum() {
+        return replies + mentions + private_messages;
+    }
+}

app/src/main/java/eu/toldi/infinityforlemmy/user/FetchUserData.java

@@ -7,6 +7,7 @@ import java.util.ArrayList;
 import eu.toldi.infinityforlemmy.RedditDataRoomDatabase;
 import eu.toldi.infinityforlemmy.SortType;
 import eu.toldi.infinityforlemmy.apis.LemmyAPI;
+import eu.toldi.infinityforlemmy.message.MessageCount;
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Retrofit;
@@ -85,6 +86,33 @@ public class FetchUserData {
         });
     }
 
+    public static void fetchUnreadCount(Retrofit retrofit, String accessToken, FetchUserUnreadCountListener fetchUserUnreadCountListener) {
+        LemmyAPI api = retrofit.create(LemmyAPI.class);
+
+        Call<MessageCount> userUnreadCount = api.userUnreadCount(accessToken);
+        userUnreadCount.enqueue(new Callback<>() {
+            @Override
+            public void onResponse(@NonNull Call<MessageCount> call, @NonNull retrofit2.Response<MessageCount> response) {
+                if (response.isSuccessful() && response.body() != null) {
+                    fetchUserUnreadCountListener.onFetchUserUnreadCountSuccess(response.body().getSum());
+                } else {
+                    fetchUserUnreadCountListener.onFetchUserUnreadCountFailed();
+                }
+            }
+
+            @Override
+            public void onFailure(@NonNull Call<MessageCount> call, @NonNull Throwable t) {
+                fetchUserUnreadCountListener.onFetchUserUnreadCountFailed();
+            }
+        });
+    }
+
+    public interface FetchUserUnreadCountListener {
+        void onFetchUserUnreadCountSuccess(int unreadCount);
+
+        void onFetchUserUnreadCountFailed();
+    }
+
     public interface FetchUserDataListener {
         void onFetchUserDataSuccess(UserData userData, int inboxCount);