From 50a357267985b14894e275ef515778f33b3023af Mon Sep 17 00:00:00 2001
From: Alex Ning <chineseperson5@gmail.com>
Date: Thu, 16 Sep 2021 23:26:56 +0800
Subject: No need to pass a HashSet to hide read posts.

---
 .../infinityforreddit/fragments/PostFragment.java  |  4 +++-
 .../infinityforreddit/post/PostViewModel.java      | 23 +++++++++++-----------
 2 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
index 768d3672..307bbd52 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
@@ -49,6 +49,7 @@ import androidx.transition.TransitionManager;
 
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.RequestManager;
+import com.google.common.collect.Lists;
 
 import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
@@ -871,6 +872,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                                         postFilter.allowNSFW = !mSharedPreferences.getBoolean(SharedPreferencesUtils.DISABLE_NSFW_FOREVER, false) && mNsfwAndSpoilerSharedPreferences.getBoolean(accountName + SharedPreferencesUtils.NSFW_BASE, false);
                                     }
                                     this.readPosts = readPostList;
+                                    currentlyReadPostIds.addAll(Lists.transform(readPosts, ReadPost::getId));
                                     initializeAndBindPostViewModel(accessToken);
                                 }
                             });
@@ -1494,7 +1496,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             mAdapter.prepareToHideReadPosts();
             refreshAdapter();
         }*/
-        mPostViewModel.setCurrentlyReadPostIds(currentlyReadPostIds);
+        mPostViewModel.hideReadPosts();
     }
 
     @Override
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostViewModel.java b/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostViewModel.java
index 09cfc0f5..4f9a3890 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostViewModel.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/post/PostViewModel.java
@@ -17,7 +17,6 @@ import androidx.paging.PagingData;
 import androidx.paging.PagingDataTransforms;
 import androidx.paging.PagingLiveData;
 
-import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 import java.util.concurrent.Executor;
@@ -42,7 +41,7 @@ public class PostViewModel extends ViewModel {
     private PostFilter postFilter;
     private String userWhere;
     private List<ReadPost> readPostList;
-    private MutableLiveData<Set<String>> currentlyReadPostIdsLiveData = new MutableLiveData<>();
+    private MutableLiveData<Boolean> currentlyReadPostIdsLiveData = new MutableLiveData<>();
 
     private LiveData<PagingData<Post>> posts;
     private LiveData<PagingData<Post>> postsWithReadPostsHidden;
@@ -85,9 +84,9 @@ public class PostViewModel extends ViewModel {
                         posts,
                         postPagingData -> PagingDataTransforms.filter(
                                 postPagingData, executor,
-                                post -> !currentlyReadPostIds.contains(post.getId())))), ViewModelKt.getViewModelScope(this));
+                                post -> !post.isRead() || !currentlyReadPostIdsLiveData.getValue()))), ViewModelKt.getViewModelScope(this));
 
-        currentlyReadPostIdsLiveData.setValue(new HashSet<>());
+        currentlyReadPostIdsLiveData.setValue(false);
     }
 
     public PostViewModel(Executor executor, Retrofit retrofit, String accessToken, String accountName,
@@ -126,9 +125,9 @@ public class PostViewModel extends ViewModel {
                         posts,
                         postPagingData -> PagingDataTransforms.filter(
                                 postPagingData, executor,
-                                post -> !currentlyReadPostIds.contains(post.getId())))), ViewModelKt.getViewModelScope(this));
+                                post -> !post.isRead() || !currentlyReadPostIdsLiveData.getValue()))), ViewModelKt.getViewModelScope(this));
 
-        currentlyReadPostIdsLiveData.setValue(new HashSet<>());
+        currentlyReadPostIdsLiveData.setValue(false);
     }
 
     public PostViewModel(Executor executor, Retrofit retrofit, String accessToken, String accountName,
@@ -169,9 +168,9 @@ public class PostViewModel extends ViewModel {
                         posts,
                         postPagingData -> PagingDataTransforms.filter(
                                 postPagingData, executor,
-                                post -> !currentlyReadPostIds.contains(post.getId())))), ViewModelKt.getViewModelScope(this));
+                                post -> !post.isRead() || !currentlyReadPostIdsLiveData.getValue()))), ViewModelKt.getViewModelScope(this));
 
-        currentlyReadPostIdsLiveData.setValue(new HashSet<>());
+        currentlyReadPostIdsLiveData.setValue(false);
     }
 
     public PostViewModel(Executor executor, Retrofit retrofit, String accessToken, String accountName,
@@ -212,17 +211,17 @@ public class PostViewModel extends ViewModel {
                         posts,
                         postPagingData -> PagingDataTransforms.filter(
                                 postPagingData, executor,
-                                post -> !currentlyReadPostIds.contains(post.getId())))), ViewModelKt.getViewModelScope(this));
+                                post -> !post.isRead() || !currentlyReadPostIdsLiveData.getValue()))), ViewModelKt.getViewModelScope(this));
 
-        currentlyReadPostIdsLiveData.setValue(new HashSet<>());
+        currentlyReadPostIdsLiveData.setValue(false);
     }
 
     public LiveData<PagingData<Post>> getPosts() {
         return postsWithReadPostsHidden;
     }
 
-    public void setCurrentlyReadPostIds(Set<String> currentlyReadPostIds) {
-        currentlyReadPostIdsLiveData.setValue(currentlyReadPostIds);
+    public void hideReadPosts() {
+        currentlyReadPostIdsLiveData.setValue(true);
     }
 
     public PostPagingSource returnPagingSoruce() {
-- 
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