Add previews to RedGIFs posts

- Setup Glide with OkHttp in the custom application
- Add PostEnricher framework, that allows to add more data to fetched Posts. This was used to fetch the RedGIFs preview from their API.

app/build.gradle

@@ -196,6 +196,7 @@ dependencies {
     def glideVersion = "4.12.0"
     implementation "com.github.bumptech.glide:glide:$glideVersion"
     annotationProcessor "com.github.bumptech.glide:compiler:$glideVersion"
+    implementation "com.github.bumptech.glide:okhttp-integration:$glideVersion"
     implementation 'jp.wasabeef:glide-transformations:4.3.0'
     implementation 'com.github.santalu:aspect-ratio-imageview:1.0.9'
     implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.23'

app/src/main/java/eu/toldi/infinityforlemmy/AppComponent.java

@@ -113,7 +113,7 @@ import eu.toldi.infinityforlemmy.settings.TranslationFragment;
 import eu.toldi.infinityforlemmy.settings.VideoPreferenceFragment;
 
 @Singleton
-@Component(modules = {AppModule.class, NetworkModule.class})
+@Component(modules = {AppModule.class, NetworkModule.class, PostEnricherModule.class})
 public interface AppComponent {
     void inject(MainActivity mainActivity);
 

app/src/main/java/eu/toldi/infinityforlemmy/Infinity.java

@@ -11,6 +11,16 @@ import android.os.Bundle;
 import android.view.WindowManager;
 import android.widget.Toast;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.lifecycle.Lifecycle;
+import androidx.lifecycle.LifecycleObserver;
+import androidx.lifecycle.OnLifecycleEvent;
+import androidx.lifecycle.ProcessLifecycleOwner;
+
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.integration.okhttp3.OkHttpUrlLoader;
+import com.bumptech.glide.load.model.GlideUrl;
 import com.evernote.android.state.StateSaver;
 import com.livefront.bridge.Bridge;
 import com.livefront.bridge.SavedStateHandler;
@@ -18,15 +28,11 @@ import com.livefront.bridge.SavedStateHandler;
 import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
 
+import java.io.InputStream;
+
 import javax.inject.Inject;
 import javax.inject.Named;
 
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.lifecycle.Lifecycle;
-import androidx.lifecycle.LifecycleObserver;
-import androidx.lifecycle.OnLifecycleEvent;
-import androidx.lifecycle.ProcessLifecycleOwner;
 import eu.toldi.infinityforlemmy.activities.LockScreenActivity;
 import eu.toldi.infinityforlemmy.broadcastreceivers.NetworkWifiStatusReceiver;
 import eu.toldi.infinityforlemmy.broadcastreceivers.WallpaperChangeReceiver;
@@ -38,6 +44,8 @@ import eu.toldi.infinityforlemmy.font.FontFamily;
 import eu.toldi.infinityforlemmy.font.TitleFontFamily;
 import eu.toldi.infinityforlemmy.utils.SharedPreferencesUtils;
 import eu.toldi.infinityforlemmy.utils.Utils;
+import okhttp3.Call;
+import okhttp3.OkHttpClient;
 
 public class Infinity extends Application implements LifecycleObserver {
     public Typeface typeface;
@@ -55,6 +63,9 @@ public class Infinity extends Application implements LifecycleObserver {
     @Inject
     @Named("security")
     SharedPreferences mSecuritySharedPreferences;
+    @Inject
+    @Named("glide")
+    OkHttpClient glideOkHttpClient;
 
     @Override
     public void onCreate() {
@@ -159,6 +170,9 @@ public class Infinity extends Application implements LifecycleObserver {
         registerReceiver(mNetworkWifiStatusReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
 
         registerReceiver(new WallpaperChangeReceiver(mSharedPreferences), new IntentFilter(Intent.ACTION_WALLPAPER_CHANGED));
+
+        OkHttpUrlLoader.Factory factory = new OkHttpUrlLoader.Factory((Call.Factory) glideOkHttpClient);
+        Glide.get(this).getRegistry().replace(GlideUrl.class, InputStream.class, factory);
     }
 
     @OnLifecycleEvent(Lifecycle.Event.ON_START)

app/src/main/java/eu/toldi/infinityforlemmy/PostEnricherModule.java

@@ -0,0 +1,26 @@
+package eu.toldi.infinityforlemmy;
+
+import java.util.Set;
+
+import dagger.Module;
+import dagger.Provides;
+import dagger.multibindings.IntoSet;
+import eu.toldi.infinityforlemmy.apis.RedgifsAPI;
+import eu.toldi.infinityforlemmy.post.enrich.CompositePostEnricher;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
+import eu.toldi.infinityforlemmy.post.enrich.RedGifsPostEnricher;
+
+@Module
+abstract class PostEnricherModule {
+
+    @Provides
+    @IntoSet
+    static PostEnricher provideRedGifsPostEnricher(RedgifsAPI redgifsAPI) {
+        return new RedGifsPostEnricher(redgifsAPI);
+    }
+
+    @Provides
+    static PostEnricher providePostEnricher(Set<PostEnricher> postEnrichers) {
+        return new CompositePostEnricher(postEnrichers);
+    }
+}

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

@@ -36,6 +36,7 @@ import eu.toldi.infinityforlemmy.customtheme.CustomThemeWrapper;
 import eu.toldi.infinityforlemmy.post.FetchPost;
 import eu.toldi.infinityforlemmy.post.ObjectResolver;
 import eu.toldi.infinityforlemmy.post.Post;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.utils.LemmyUtils;
 import eu.toldi.infinityforlemmy.utils.SharedPreferencesUtils;
 
@@ -83,6 +84,9 @@ public class LinkResolverActivity extends AppCompatActivity {
     @Inject
     Executor mExecutor;
 
+    @Inject
+    PostEnricher postEnricher;
+
     private String mAccessToken;
 
     private Uri getRedditUriByPath(String path) {
@@ -214,7 +218,7 @@ public class LinkResolverActivity extends AppCompatActivity {
                                     URL baseURL = new URL(mRetrofit.getBaseURL());
                                     if (baseURL.getHost().equalsIgnoreCase(uri.getHost())) {
                                         local = true;
-                                        FetchPost.fetchPost(mExecutor, new Handler(), mRetrofit.getRetrofit(), segments.get(segments.size() - 1), mAccessToken, new FetchPost.FetchPostListener() {
+                                        FetchPost.fetchPost(mExecutor, new Handler(), mRetrofit.getRetrofit(), segments.get(segments.size() - 1), mAccessToken, postEnricher, new FetchPost.FetchPostListener() {
                                             @Override
                                             public void fetchPostSuccess(Post post) {
 

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

@@ -81,6 +81,7 @@ import eu.toldi.infinityforlemmy.post.HistoryPostPagingSource;
 import eu.toldi.infinityforlemmy.post.ParsePost;
 import eu.toldi.infinityforlemmy.post.Post;
 import eu.toldi.infinityforlemmy.post.PostPagingSource;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.postfilter.PostFilter;
 import eu.toldi.infinityforlemmy.readpost.ReadPost;
 import eu.toldi.infinityforlemmy.utils.APIUtils;
@@ -151,6 +152,8 @@ public class ViewPostDetailActivity extends BaseActivity implements SortTypeSele
     @Inject
     @Named("glide")
     OkHttpClient okHttpClient;
+    @Inject
+    PostEnricher postEnricher;
     @State
     ArrayList<Post> posts;
     @State
@@ -592,7 +595,7 @@ public class ViewPostDetailActivity extends BaseActivity implements SortTypeSele
                     Response<String> response = call.execute();
                     if (response.isSuccessful()) {
                         String responseString = response.body();
-                        LinkedHashSet<Post> newPosts = ParsePost.parsePostsSync(responseString, -1, postFilter, readPostList);
+                        LinkedHashSet<Post> newPosts = ParsePost.parsePostsSync(responseString, -1, postFilter, readPostList, postEnricher);
                         if (newPosts == null) {
                             handler.post(() -> {
                                 loadingMorePostsStatus = LoadingMorePostsStatus.NO_MORE_POSTS;
@@ -674,7 +677,7 @@ public class ViewPostDetailActivity extends BaseActivity implements SortTypeSele
                     Response<String> response = historyPosts.execute();
                     if (response.isSuccessful()) {
                         String responseString = response.body();
-                        LinkedHashSet<Post> newPosts = ParsePost.parsePostsSync(responseString, -1, postFilter, null);
+                        LinkedHashSet<Post> newPosts = ParsePost.parsePostsSync(responseString, -1, postFilter, null, postEnricher);
                         if (newPosts == null || newPosts.isEmpty()) {
                             handler.post(() -> {
                                 loadingMorePostsStatus = LoadingMorePostsStatus.NO_MORE_POSTS;

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

@@ -108,6 +108,7 @@ import eu.toldi.infinityforlemmy.font.TitleFontFamily;
 import eu.toldi.infinityforlemmy.font.TitleFontStyle;
 import eu.toldi.infinityforlemmy.post.FetchPost;
 import eu.toldi.infinityforlemmy.post.Post;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.services.DownloadMediaService;
 import eu.toldi.infinityforlemmy.services.DownloadRedditVideoService;
 import eu.toldi.infinityforlemmy.utils.APIUtils;
@@ -231,6 +232,9 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
     @Inject
     SimpleCache mSimpleCache;
 
+    @Inject
+    PostEnricher postEnricher;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -787,7 +791,7 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
                     int commentsIndex = segments.lastIndexOf("comments");
                     String postId = segments.get(commentsIndex + 1);
                     FetchPost.fetchPost(mExecutor, new Handler(), retrofit.getRetrofit(), postId, null,
-                            new FetchPost.FetchPostListener() {
+                            postEnricher, new FetchPost.FetchPostListener() {
                                 @Override
                                 public void fetchPostSuccess(Post post) {
                                     if (post.isGfycat()) {

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

@@ -8,11 +8,15 @@ import retrofit2.http.FormUrlEncoded;
 import retrofit2.http.GET;
 import retrofit2.http.POST;
 import retrofit2.http.Path;
+import retrofit2.http.Query;
 
 public interface RedgifsAPI {
     @GET("/v2/gifs/{id}")
     Call<String> getRedgifsData(@Path("id") String id);
 
+    @GET("/v2/gifs")
+    Call<String> getRedgifsMultipleData(@Query("ids") String ids);
+
     @FormUrlEncoded
     @POST("/v2/oauth/client")
     Call<String> getRedgifsAccessToken(@FieldMap Map<String, String> params);

app/src/main/java/eu/toldi/infinityforlemmy/fragments/HistoryPostFragment.java

@@ -124,6 +124,7 @@ import eu.toldi.infinityforlemmy.events.ShowThumbnailOnTheRightInCompactLayoutEv
 import eu.toldi.infinityforlemmy.post.HistoryPostPagingSource;
 import eu.toldi.infinityforlemmy.post.HistoryPostViewModel;
 import eu.toldi.infinityforlemmy.post.Post;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.postfilter.PostFilter;
 import eu.toldi.infinityforlemmy.postfilter.PostFilterUsage;
 import eu.toldi.infinityforlemmy.utils.SharedPreferencesUtils;
@@ -195,6 +196,8 @@ public class HistoryPostFragment extends Fragment implements FragmentCommunicato
     ExoCreator mExoCreator;
     @Inject
     Executor mExecutor;
+    @Inject
+    PostEnricher postEnricher;
     private RequestManager mGlide;
     private BaseActivity activity;
     private LinearLayoutManagerBugFixed mLinearLayoutManager;
@@ -651,15 +654,10 @@ public class HistoryPostFragment extends Fragment implements FragmentCommunicato
     }
 
     private void initializeAndBindPostViewModel(String accessToken) {
-        if (postType == HistoryPostPagingSource.TYPE_READ_POSTS) {
+        mHistoryPostViewModel = new ViewModelProvider(HistoryPostFragment.this, new HistoryPostViewModel.Factory(mExecutor,
-            mHistoryPostViewModel = new ViewModelProvider(HistoryPostFragment.this, new HistoryPostViewModel.Factory(mExecutor,
+                accessToken == null ? mRetrofit.getRetrofit() : mOauthRetrofit, mRedditDataRoomDatabase, accessToken,
-                    accessToken == null ? mRetrofit.getRetrofit() : mOauthRetrofit, mRedditDataRoomDatabase, accessToken,
+                accountName, mSharedPreferences, HistoryPostPagingSource.TYPE_READ_POSTS, postFilter, postEnricher))
-                    accountName, mSharedPreferences, HistoryPostPagingSource.TYPE_READ_POSTS, postFilter)).get(HistoryPostViewModel.class);
+                .get(HistoryPostViewModel.class);
-        } else {
-            mHistoryPostViewModel = new ViewModelProvider(HistoryPostFragment.this, new HistoryPostViewModel.Factory(mExecutor,
-                    accessToken == null ? mRetrofit.getRetrofit() : mOauthRetrofit, mRedditDataRoomDatabase, accessToken,
-                    accountName, mSharedPreferences, HistoryPostPagingSource.TYPE_READ_POSTS, postFilter)).get(HistoryPostViewModel.class);
-        }
 
         bindPostViewModel();
     }
@@ -1444,4 +1442,4 @@ public class HistoryPostFragment extends Fragment implements FragmentCommunicato
     public interface LoadIconListener {
         void loadIconSuccess(String subredditOrUserName, String iconUrl);
     }
-}
+}

app/src/main/java/eu/toldi/infinityforlemmy/fragments/PostFragment.java

@@ -135,6 +135,7 @@ import eu.toldi.infinityforlemmy.events.ShowThumbnailOnTheRightInCompactLayoutEv
 import eu.toldi.infinityforlemmy.post.Post;
 import eu.toldi.infinityforlemmy.post.PostPagingSource;
 import eu.toldi.infinityforlemmy.post.PostViewModel;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.postfilter.PostFilter;
 import eu.toldi.infinityforlemmy.postfilter.PostFilterUsage;
 import eu.toldi.infinityforlemmy.utils.SharedPreferencesUtils;
@@ -222,6 +223,8 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
     ExoCreator mExoCreator;
     @Inject
     Executor mExecutor;
+    @Inject
+    PostEnricher postEnricher;
     private RequestManager mGlide;
     private BaseActivity activity;
     private LinearLayoutManagerBugFixed mLinearLayoutManager;
@@ -1221,30 +1224,36 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                     mRetrofit, accessToken,
                     accountName, mSharedPreferences,
                     mPostFeedScrolledPositionSharedPreferences, mPostHistorySharedPreferences, subredditName,
-                    query, trendingSource, postType, sortType, postFilter, readPosts)).get(PostViewModel.class);
+                    query, trendingSource, postType, sortType, postFilter, readPosts, postEnricher))
+                    .get(PostViewModel.class);
         } else if (postType == PostPagingSource.TYPE_SUBREDDIT) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(mExecutor,
                     mRetrofit, accessToken,
                     accountName, mSharedPreferences, mPostFeedScrolledPositionSharedPreferences,
-                    mPostHistorySharedPreferences, subredditName, postType, sortType, postFilter, readPosts))
+                    mPostHistorySharedPreferences, subredditName, postType, sortType, postFilter, readPosts,
+                    postEnricher))
                     .get(PostViewModel.class);
         } else if (postType == PostPagingSource.TYPE_MULTI_REDDIT) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(mExecutor,
                     mRetrofit, accessToken,
                     accountName, mSharedPreferences, mPostFeedScrolledPositionSharedPreferences,
-                    mPostHistorySharedPreferences, multiRedditPath, postType, sortType, postFilter, readPosts))
+                    mPostHistorySharedPreferences, multiRedditPath, postType, sortType, postFilter, readPosts,
+                    postEnricher))
                     .get(PostViewModel.class);
         } else if (postType == PostPagingSource.TYPE_USER) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(mExecutor,
                     mRetrofit, accessToken,
                     accountName, mSharedPreferences, mPostFeedScrolledPositionSharedPreferences,
-                    mPostHistorySharedPreferences, username, postType, sortType, postFilter, where, readPosts))
+                    mPostHistorySharedPreferences, username, postType, sortType, postFilter, where, readPosts,
+                    postEnricher))
                     .get(PostViewModel.class);
         } else {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(mExecutor,
                     mRetrofit, accessToken,
                     accountName, mSharedPreferences, mPostFeedScrolledPositionSharedPreferences,
-                    mPostHistorySharedPreferences, postType, sortType, postFilter, readPosts, subredditName)).get(PostViewModel.class);
+                    mPostHistorySharedPreferences, postType, sortType, postFilter, readPosts, subredditName,
+                    postEnricher))
+                    .get(PostViewModel.class);
         }
 
         bindPostViewModel();
@@ -1256,26 +1265,27 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(mExecutor,
                     mRetrofit, null, accountName, mSharedPreferences,
                     mPostFeedScrolledPositionSharedPreferences, null, subredditName, query, trendingSource,
-                    postType, sortType, postFilter, readPosts)).get(PostViewModel.class);
+                    postType, sortType, postFilter, readPosts, postEnricher)).get(PostViewModel.class);
         } else if (postType == PostPagingSource.TYPE_SUBREDDIT) {
             mPostViewModel = new ViewModelProvider(this, new PostViewModel.Factory(mExecutor,
                     mRetrofit, null, accountName, mSharedPreferences,
                     mPostFeedScrolledPositionSharedPreferences, null, subredditName, postType, sortType,
-                    postFilter, readPosts)).get(PostViewModel.class);
+                    postFilter, readPosts, postEnricher)).get(PostViewModel.class);
         } else if (postType == PostPagingSource.TYPE_MULTI_REDDIT) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(mExecutor,
                     mRetrofit, null, accountName, mSharedPreferences,
                     mPostFeedScrolledPositionSharedPreferences, null, multiRedditPath,
-                    postType, sortType, postFilter, readPosts)).get(PostViewModel.class);
+                    postType, sortType, postFilter, readPosts, postEnricher)).get(PostViewModel.class);
         } else if (postType == PostPagingSource.TYPE_USER) {
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(mExecutor,
                     mRetrofit, null, accountName, mSharedPreferences,
                     mPostFeedScrolledPositionSharedPreferences, null, username, postType, sortType, postFilter,
-                    where, readPosts)).get(PostViewModel.class);
+                    where, readPosts, postEnricher)).get(PostViewModel.class);
         } else {
             //Anonymous Front Page
             mPostViewModel = new ViewModelProvider(PostFragment.this, new PostViewModel.Factory(mExecutor,
-                    mRetrofit, mSharedPreferences, concatenatedSubredditNames, postType, sortType, postFilter, subredditName))
+                    mRetrofit, mSharedPreferences, concatenatedSubredditNames, postType, sortType, postFilter, subredditName,
+                    postEnricher))
                     .get(PostViewModel.class);
         }
 

app/src/main/java/eu/toldi/infinityforlemmy/fragments/ViewPostDetailFragment.java

@@ -112,6 +112,7 @@ import eu.toldi.infinityforlemmy.post.HidePost;
 import eu.toldi.infinityforlemmy.post.LemmyPostAPI;
 import eu.toldi.infinityforlemmy.post.MarkPostAsRead;
 import eu.toldi.infinityforlemmy.post.Post;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.readpost.InsertReadPost;
 import eu.toldi.infinityforlemmy.subreddit.FetchSubredditData;
 import eu.toldi.infinityforlemmy.subreddit.SubredditData;
@@ -200,6 +201,8 @@ public class ViewPostDetailFragment extends Fragment implements FragmentCommunic
     MarkPostAsRead markPostAsRead;
     @Inject
     LemmyPostAPI mLemmyPostAPI;
+    @Inject
+    PostEnricher postEnricher;
     @State
     Post mPost;
     @State
@@ -1329,7 +1332,7 @@ public class ViewPostDetailFragment extends Fragment implements FragmentCommunic
         mSwipeRefreshLayout.setRefreshing(true);
         mGlide.clear(mFetchPostInfoImageView);
         FetchPost.fetchPost(mExecutor, new Handler(), mRetrofit.getRetrofit(), String.valueOf(subredditId), mAccessToken,
-                new FetchPost.FetchPostListener() {
+                postEnricher, new FetchPost.FetchPostListener() {
                     @Override
                     public void fetchPostSuccess(Post post) {
                         if (!isAdded()) {
@@ -1588,7 +1591,7 @@ public class ViewPostDetailFragment extends Fragment implements FragmentCommunic
                 Retrofit retrofit = mRetrofit.getRetrofit();
 
                 FetchPost.fetchPost(mExecutor, new Handler(), retrofit, String.valueOf(mPost.getId()), mAccessToken,
-                        new FetchPost.FetchPostListener() {
+                        postEnricher, new FetchPost.FetchPostListener() {
                             @Override
                             public void fetchPostSuccess(Post post) {
                                 if (isAdded()) {

app/src/main/java/eu/toldi/infinityforlemmy/post/FetchPost.java

@@ -8,6 +8,7 @@ import java.util.concurrent.Executor;
 
 import eu.toldi.infinityforlemmy.apis.LemmyAPI;
 import eu.toldi.infinityforlemmy.apis.RedditAPI;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
@@ -15,7 +16,7 @@ import retrofit2.Retrofit;
 
 public class FetchPost {
     public static void fetchPost(Executor executor, Handler handler, Retrofit retrofit, String id, String accessToken,
-                                 FetchPostListener fetchPostListener) {
+                                 PostEnricher postEnricher, FetchPostListener fetchPostListener) {
         Call<String> postCall;
         // Use LemmyAPI.postInfo() instead of RedditAPI.getPost()
         postCall = retrofit.create(LemmyAPI.class).postInfo(Integer.parseInt(id), null, accessToken);
@@ -24,7 +25,7 @@ public class FetchPost {
             @Override
             public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
                 if (response.isSuccessful()) {
-                    ParsePost.parsePost(executor, handler, response.body(), new ParsePost.ParsePostListener() {
+                    ParsePost.parsePost(executor, handler, postEnricher, response.body(), new ParsePost.ParsePostListener() {
                         @Override
                         public void onParsePostSuccess(Post post) {
                             fetchPostListener.fetchPostSuccess(post);

app/src/main/java/eu/toldi/infinityforlemmy/post/HistoryPostPagingSource.java

@@ -19,6 +19,7 @@ import java.util.concurrent.Executor;
 
 import eu.toldi.infinityforlemmy.RedditDataRoomDatabase;
 import eu.toldi.infinityforlemmy.apis.RedditAPI;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.postfilter.PostFilter;
 import eu.toldi.infinityforlemmy.readpost.ReadPost;
 import eu.toldi.infinityforlemmy.utils.APIUtils;
@@ -39,10 +40,11 @@ public class HistoryPostPagingSource extends ListenableFuturePagingSource<String
     private String username;
     private int postType;
     private PostFilter postFilter;
+    private PostEnricher postEnricher;
 
     public HistoryPostPagingSource(Retrofit retrofit, Executor executor, RedditDataRoomDatabase redditDataRoomDatabase,
                                    String accessToken, String accountName, SharedPreferences sharedPreferences,
-                                   String username, int postType, PostFilter postFilter) {
+                                   String username, int postType, PostFilter postFilter, PostEnricher postEnricher) {
         this.retrofit = retrofit;
         this.executor = executor;
         this.redditDataRoomDatabase = redditDataRoomDatabase;
@@ -52,6 +54,7 @@ public class HistoryPostPagingSource extends ListenableFuturePagingSource<String
         this.username = username;
         this.postType = postType;
         this.postFilter = postFilter;
+        this.postEnricher = postEnricher;
     }
 
     @Nullable
@@ -92,7 +95,7 @@ public class HistoryPostPagingSource extends ListenableFuturePagingSource<String
             Response<String> response = historyPosts.execute();
             if (response.isSuccessful()) {
                 String responseString = response.body();
-                LinkedHashSet<Post> newPosts = ParsePost.parsePostsSync(responseString, -1, postFilter, null);
+                LinkedHashSet<Post> newPosts = ParsePost.parsePostsSync(responseString, -1, postFilter, null, postEnricher);
                 if (newPosts == null) {
                     return new LoadResult.Error<>(new Exception("Error parsing posts"));
                 } else {

app/src/main/java/eu/toldi/infinityforlemmy/post/HistoryPostViewModel.java

@@ -17,6 +17,7 @@ import androidx.paging.PagingLiveData;
 import java.util.concurrent.Executor;
 
 import eu.toldi.infinityforlemmy.RedditDataRoomDatabase;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.postfilter.PostFilter;
 import retrofit2.Retrofit;
 
@@ -29,6 +30,7 @@ public class HistoryPostViewModel extends ViewModel {
     private SharedPreferences sharedPreferences;
     private int postType;
     private PostFilter postFilter;
+    private PostEnricher postEnricher;
 
     private LiveData<PagingData<Post>> posts;
 
@@ -36,7 +38,7 @@ public class HistoryPostViewModel extends ViewModel {
 
     public HistoryPostViewModel(Executor executor, Retrofit retrofit, RedditDataRoomDatabase redditDataRoomDatabase,
                                 String accessToken, String accountName, SharedPreferences sharedPreferences,
-                                int postType, PostFilter postFilter) {
+                                int postType, PostFilter postFilter, PostEnricher postEnricher) {
         this.executor = executor;
         this.retrofit = retrofit;
         this.redditDataRoomDatabase = redditDataRoomDatabase;
@@ -45,11 +47,12 @@ public class HistoryPostViewModel extends ViewModel {
         this.sharedPreferences = sharedPreferences;
         this.postType = postType;
         this.postFilter = postFilter;
+        this.postEnricher = postEnricher;
 
         postFilterLiveData = new MutableLiveData<>();
         postFilterLiveData.postValue(postFilter);
 
-        Pager<String, Post> pager = new Pager<>(new PagingConfig(25, 25, false), this::returnPagingSoruce);
+        Pager<String, Post> pager = new Pager<>(new PagingConfig(25, 25, false), this::returnPagingSource);
 
         posts = Transformations.switchMap(postFilterLiveData, postFilterValue -> PagingLiveData.cachedIn(PagingLiveData.getLiveData(pager), ViewModelKt.getViewModelScope(this)));
     }
@@ -58,19 +61,9 @@ public class HistoryPostViewModel extends ViewModel {
         return posts;
     }
 
-    public HistoryPostPagingSource returnPagingSoruce() {
+    public HistoryPostPagingSource returnPagingSource() {
-        HistoryPostPagingSource paging3PagingSource;
+        return new HistoryPostPagingSource(retrofit, executor, redditDataRoomDatabase, accessToken, accountName,
-        switch (postType) {
+                sharedPreferences, accountName, postType, postFilter, postEnricher);
-            case HistoryPostPagingSource.TYPE_READ_POSTS:
-                paging3PagingSource = new HistoryPostPagingSource(retrofit, executor, redditDataRoomDatabase, accessToken, accountName,
-                        sharedPreferences, accountName, postType, postFilter);
-                break;
-            default:
-                paging3PagingSource = new HistoryPostPagingSource(retrofit, executor, redditDataRoomDatabase, accessToken, accountName,
-                        sharedPreferences, accountName, postType, postFilter);
-                break;
-        }
-        return paging3PagingSource;
     }
 
     public void changePostFilter(PostFilter postFilter) {
@@ -86,10 +79,11 @@ public class HistoryPostViewModel extends ViewModel {
         private SharedPreferences sharedPreferences;
         private int postType;
         private PostFilter postFilter;
+        private PostEnricher postEnricher;
 
         public Factory(Executor executor, Retrofit retrofit, RedditDataRoomDatabase redditDataRoomDatabase,
                        String accessToken, String accountName, SharedPreferences sharedPreferences, int postType,
-                       PostFilter postFilter) {
+                       PostFilter postFilter, PostEnricher postEnricher) {
             this.executor = executor;
             this.retrofit = retrofit;
             this.redditDataRoomDatabase = redditDataRoomDatabase;
@@ -98,18 +92,14 @@ public class HistoryPostViewModel extends ViewModel {
             this.sharedPreferences = sharedPreferences;
             this.postType = postType;
             this.postFilter = postFilter;
+            this.postEnricher = postEnricher;
         }
 
         @NonNull
         @Override
         public <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
-            if (postType == HistoryPostPagingSource.TYPE_READ_POSTS) {
+            return (T) new HistoryPostViewModel(executor, retrofit, redditDataRoomDatabase, accessToken, accountName, sharedPreferences,
-                return (T) new HistoryPostViewModel(executor, retrofit, redditDataRoomDatabase, accessToken, accountName, sharedPreferences,
+                        postType, postFilter, postEnricher);
-                        postType, postFilter);
-            } else {
-                return (T) new HistoryPostViewModel(executor, retrofit, redditDataRoomDatabase, accessToken, accountName, sharedPreferences,
-                        postType, postFilter);
-            }
         }
     }
 }

app/src/main/java/eu/toldi/infinityforlemmy/post/ParsePost.java

@@ -34,6 +34,7 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import eu.toldi.infinityforlemmy.community.BasicCommunityInfo;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.postfilter.PostFilter;
 import eu.toldi.infinityforlemmy.user.BasicUserInfo;
 import eu.toldi.infinityforlemmy.utils.JSONUtils;
@@ -45,7 +46,8 @@ import eu.toldi.infinityforlemmy.utils.Utils;
  */
 
 public class ParsePost {
-    public static LinkedHashSet<Post> parsePostsSync(String response, int nPosts, PostFilter postFilter, List<String> readPostList) {
+    public static LinkedHashSet<Post> parsePostsSync(String response, int nPosts, PostFilter postFilter,
+                                                     List<String> readPostList, PostEnricher postEnricher) {
         LinkedHashSet<Post> newPosts = new LinkedHashSet<>();
         try {
             JSONObject jsonResponse = new JSONObject(response);
@@ -80,6 +82,8 @@ public class ParsePost {
                 }
             }
 
+            postEnricher.enrich(newPosts);
+
             return newPosts;
         } catch (JSONException e) {
             e.printStackTrace();
@@ -87,21 +91,9 @@ public class ParsePost {
         }
     }
 
-    public static String getLastItem(String response) {
-        try {
-            JSONObject object = new JSONObject(response).getJSONObject(JSONUtils.DATA_KEY);
-            return object.isNull(JSONUtils.AFTER_KEY) ? null : object.getString(JSONUtils.AFTER_KEY);
-        } catch (JSONException e) {
-            e.printStackTrace();
-            return null;
-        }
-    }
-
-
-    public static void parsePost(Executor executor, Handler handler, String response, ParsePostListener parsePostListener) {
-        PostFilter postFilter = new PostFilter();
-        postFilter.allowNSFW = true;
 
+    public static void parsePost(Executor executor, Handler handler, PostEnricher postEnricher,
+                                 String response, ParsePostListener parsePostListener) {
         executor.execute(() -> {
             try {
                 JSONObject allData = new JSONObject(response).getJSONObject("post_view");
@@ -111,6 +103,7 @@ public class ParsePost {
                 }
 
                 Post post = parseBasicData(allData);
+                postEnricher.enrich(List.of(post));
                 handler.post(() -> parsePostListener.onParsePostSuccess(post));
             } catch (JSONException e) {
                 e.printStackTrace();

app/src/main/java/eu/toldi/infinityforlemmy/post/PostPagingSource.java

@@ -21,6 +21,7 @@ import java.util.concurrent.Executor;
 import eu.toldi.infinityforlemmy.RetrofitHolder;
 import eu.toldi.infinityforlemmy.SortType;
 import eu.toldi.infinityforlemmy.apis.LemmyAPI;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.postfilter.PostFilter;
 import eu.toldi.infinityforlemmy.utils.SharedPreferencesUtils;
 import retrofit2.HttpException;
@@ -57,6 +58,7 @@ public class PostPagingSource extends ListenableFuturePagingSource<Integer, Post
     private List<String> readPostList;
     private String userWhere;
     private String multiRedditPath;
+    private final PostEnricher postEnricher;
     private LinkedHashSet<Post> postLinkedHashSet;
 
     private int page = 1;
@@ -64,7 +66,8 @@ public class PostPagingSource extends ListenableFuturePagingSource<Integer, Post
     PostPagingSource(Executor executor, RetrofitHolder retrofit, String accessToken, String accountName,
                      SharedPreferences sharedPreferences,
                      SharedPreferences postFeedScrolledPositionSharedPreferences, int postType,
-                     SortType sortType, PostFilter postFilter, List<String> readPostList, String option) {
+                     SortType sortType, PostFilter postFilter, List<String> readPostList, String option,
+                     PostEnricher postEnricher) {
         this.executor = executor;
         this.retrofit = retrofit;
         this.accessToken = accessToken;
@@ -76,13 +79,14 @@ public class PostPagingSource extends ListenableFuturePagingSource<Integer, Post
         this.sortType = sortType == null ? new SortType(SortType.Type.ACTIVE) : sortType;
         this.postFilter = postFilter;
         this.readPostList = readPostList;
+        this.postEnricher = postEnricher;
         postLinkedHashSet = new LinkedHashSet<>();
     }
 
     PostPagingSource(Executor executor, RetrofitHolder retrofit, String accessToken, String accountName,
                      SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                      String path, int postType, SortType sortType, PostFilter postFilter,
-                     List<String> readPostList) {
+                     List<String> readPostList, PostEnricher postEnricher) {
         this.executor = executor;
         this.retrofit = retrofit;
         this.accessToken = accessToken;
@@ -114,13 +118,14 @@ public class PostPagingSource extends ListenableFuturePagingSource<Integer, Post
         }
         this.postFilter = postFilter;
         this.readPostList = readPostList;
+        this.postEnricher = postEnricher;
         postLinkedHashSet = new LinkedHashSet<>();
     }
 
     PostPagingSource(Executor executor, RetrofitHolder retrofit, String accessToken, String accountName,
                      SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                      String subredditOrUserName, int postType, SortType sortType, PostFilter postFilter,
-                     String where, List<String> readPostList) {
+                     String where, List<String> readPostList, PostEnricher postEnricher) {
         this.executor = executor;
         this.retrofit = retrofit;
         this.accessToken = accessToken;
@@ -133,13 +138,14 @@ public class PostPagingSource extends ListenableFuturePagingSource<Integer, Post
         this.postFilter = postFilter;
         userWhere = where;
         this.readPostList = readPostList;
+        this.postEnricher = postEnricher;
         postLinkedHashSet = new LinkedHashSet<>();
     }
 
     PostPagingSource(Executor executor, RetrofitHolder retrofit, String accessToken, String accountName,
                      SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                      String subredditOrUserName, String query, String trendingSource, int postType,
-                     SortType sortType, PostFilter postFilter, List<String> readPostList) {
+                     SortType sortType, PostFilter postFilter, List<String> readPostList, PostEnricher postEnricher) {
         this.executor = executor;
         this.retrofit = retrofit;
         this.accessToken = accessToken;
@@ -152,8 +158,9 @@ public class PostPagingSource extends ListenableFuturePagingSource<Integer, Post
         this.postType = postType;
         this.sortType = sortType == null ? new SortType(SortType.Type.TOP) : sortType;
         this.postFilter = postFilter;
-        postLinkedHashSet = new LinkedHashSet<>();
         this.readPostList = readPostList;
+        this.postEnricher = postEnricher;
+        postLinkedHashSet = new LinkedHashSet<>();
     }
 
     @Nullable
@@ -190,7 +197,7 @@ public class PostPagingSource extends ListenableFuturePagingSource<Integer, Post
     public LoadResult<Integer, Post> transformData(Response<String> response) {
         if (response.isSuccessful()) {
             String responseString = response.body();
-            LinkedHashSet<Post> newPosts = ParsePost.parsePostsSync(responseString, -1, postFilter, readPostList);
+            LinkedHashSet<Post> newPosts = ParsePost.parsePostsSync(responseString, -1, postFilter, readPostList, postEnricher);
 
             if (newPosts == null) {
                 return new LoadResult.Error<>(new Exception("Error parsing posts"));

app/src/main/java/eu/toldi/infinityforlemmy/post/PostViewModel.java

@@ -23,6 +23,7 @@ import java.util.concurrent.Executor;
 
 import eu.toldi.infinityforlemmy.RetrofitHolder;
 import eu.toldi.infinityforlemmy.SortType;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.postfilter.PostFilter;
 import eu.toldi.infinityforlemmy.utils.SharedPreferencesUtils;
 
@@ -41,6 +42,7 @@ public class PostViewModel extends ViewModel {
     private PostFilter postFilter;
     private String userWhere;
     private List<String> readPostList;
+    private PostEnricher postEnricher;
     private MutableLiveData<Boolean> currentlyReadPostIdsLiveData = new MutableLiveData<>();
 
     private LiveData<PagingData<Post>> posts;
@@ -53,7 +55,7 @@ public class PostViewModel extends ViewModel {
     public PostViewModel(Executor executor, RetrofitHolder retrofit, String accessToken, String accountName,
                          SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                          @Nullable SharedPreferences postHistorySharedPreferences, int postType,
-                         SortType sortType, PostFilter postFilter, List<String> readPostList, String option) {
+                         SortType sortType, PostFilter postFilter, List<String> readPostList, String option, PostEnricher postEnricher) {
         this.executor = executor;
         this.retrofit = retrofit;
         this.accessToken = accessToken;
@@ -65,6 +67,7 @@ public class PostViewModel extends ViewModel {
         this.postFilter = postFilter;
         this.readPostList = readPostList;
         this.name = option;
+        this.postEnricher = postEnricher;
 
         sortTypeLiveData = new MutableLiveData<>();
         sortTypeLiveData.postValue(sortType);
@@ -95,7 +98,7 @@ public class PostViewModel extends ViewModel {
     public PostViewModel(Executor executor, RetrofitHolder retrofit, String accessToken, String accountName,
                          SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                          @Nullable SharedPreferences postHistorySharedPreferences, String subredditName, int postType,
-                         SortType sortType, PostFilter postFilter, List<String> readPostList) {
+                         SortType sortType, PostFilter postFilter, List<String> readPostList, PostEnricher postEnricher) {
         this.executor = executor;
         this.retrofit = retrofit;
         this.accessToken = accessToken;
@@ -107,6 +110,7 @@ public class PostViewModel extends ViewModel {
         this.postFilter = postFilter;
         this.readPostList = readPostList;
         this.name = subredditName;
+        this.postEnricher = postEnricher;
 
         sortTypeLiveData = new MutableLiveData<>();
         sortTypeLiveData.postValue(sortType);
@@ -139,7 +143,7 @@ public class PostViewModel extends ViewModel {
                          SharedPreferences postFeedScrolledPositionSharedPreferences,
                          @Nullable SharedPreferences postHistorySharedPreferences, String username,
                          int postType, SortType sortType, PostFilter postFilter, String userWhere,
-                         List<String> readPostList) {
+                         List<String> readPostList, PostEnricher postEnricher) {
         this.executor = executor;
         this.retrofit = retrofit;
         this.accessToken = accessToken;
@@ -152,6 +156,7 @@ public class PostViewModel extends ViewModel {
         this.readPostList = readPostList;
         this.name = username;
         this.userWhere = userWhere;
+        this.postEnricher = postEnricher;
 
         sortTypeLiveData = new MutableLiveData<>();
         sortTypeLiveData.postValue(sortType);
@@ -183,7 +188,7 @@ public class PostViewModel extends ViewModel {
                          SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                          @Nullable SharedPreferences postHistorySharedPreferences, String subredditName, String query,
                          String trendingSource, int postType, SortType sortType, PostFilter postFilter,
-                         List<String> readPostList) {
+                         List<String> readPostList, PostEnricher postEnricher) {
         this.executor = executor;
         this.retrofit = retrofit;
         this.accessToken = accessToken;
@@ -197,6 +202,7 @@ public class PostViewModel extends ViewModel {
         this.name = subredditName;
         this.query = query;
         this.trendingSource = trendingSource;
+        this.postEnricher = postEnricher;
 
         sortTypeLiveData = new MutableLiveData<>();
         sortTypeLiveData.postValue(sortType);
@@ -238,25 +244,25 @@ public class PostViewModel extends ViewModel {
             case PostPagingSource.TYPE_FRONT_PAGE:
                 paging3PagingSource = new PostPagingSource(executor, retrofit, accessToken, accountName,
                         sharedPreferences, postFeedScrolledPositionSharedPreferences, postType, sortType,
-                        postFilter, readPostList,name);
+                        postFilter, readPostList, name, postEnricher);
                 break;
             case PostPagingSource.TYPE_SUBREDDIT:
             case PostPagingSource.TYPE_MULTI_REDDIT:
             case PostPagingSource.TYPE_ANONYMOUS_FRONT_PAGE:
                 paging3PagingSource = new PostPagingSource(executor, retrofit, accessToken, accountName,
                         sharedPreferences, postFeedScrolledPositionSharedPreferences, name, postType,
-                        sortType, postFilter, readPostList);
+                        sortType, postFilter, readPostList, postEnricher);
                 break;
             case PostPagingSource.TYPE_SEARCH:
                 paging3PagingSource = new PostPagingSource(executor, retrofit, accessToken, accountName,
                         sharedPreferences, postFeedScrolledPositionSharedPreferences, name, query, trendingSource,
-                        postType, sortType, postFilter, readPostList);
+                        postType, sortType, postFilter, readPostList, postEnricher);
                 break;
             default:
                 //User
                 paging3PagingSource = new PostPagingSource(executor, retrofit, accessToken, accountName,
                         sharedPreferences, postFeedScrolledPositionSharedPreferences, name, postType,
-                        sortType, postFilter, userWhere, readPostList);
+                        sortType, postFilter, userWhere, readPostList, postEnricher);
                 break;
         }
         return paging3PagingSource;
@@ -291,11 +297,12 @@ public class PostViewModel extends ViewModel {
         private PostFilter postFilter;
         private String userWhere;
         private List<String> readPostList;
+        private PostEnricher postEnricher;
 
         public Factory(Executor executor, RetrofitHolder retrofit, String accessToken, String accountName,
                        SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                        SharedPreferences postHistorySharedPreferences, int postType, SortType sortType,
-                       PostFilter postFilter, List<String> readPostList, String option) {
+                       PostFilter postFilter, List<String> readPostList, String option, PostEnricher postEnricher) {
             this.executor = executor;
             this.retrofit = retrofit;
             this.accessToken = accessToken;
@@ -308,12 +315,13 @@ public class PostViewModel extends ViewModel {
             this.postFilter = postFilter;
             this.readPostList = readPostList;
             this.name = option;
+            this.postEnricher = postEnricher;
         }
 
         public Factory(Executor executor, RetrofitHolder retrofit, String accessToken, String accountName,
                        SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                        SharedPreferences postHistorySharedPreferences, String name, int postType, SortType sortType,
-                       PostFilter postFilter, List<String> readPostList) {
+                       PostFilter postFilter, List<String> readPostList, PostEnricher postEnricher) {
             this.executor = executor;
             this.retrofit = retrofit;
             this.accessToken = accessToken;
@@ -326,13 +334,15 @@ public class PostViewModel extends ViewModel {
             this.sortType = sortType;
             this.postFilter = postFilter;
             this.readPostList = readPostList;
+            this.postEnricher = postEnricher;
         }
 
         //User posts
         public Factory(Executor executor, RetrofitHolder retrofit, String accessToken, String accountName,
                        SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                        SharedPreferences postHistorySharedPreferences, String username, int postType,
-                       SortType sortType, PostFilter postFilter, String where, List<String> readPostList) {
+                       SortType sortType, PostFilter postFilter, String where, List<String> readPostList,
+                       PostEnricher postEnricher) {
             this.executor = executor;
             this.retrofit = retrofit;
             this.accessToken = accessToken;
@@ -346,12 +356,14 @@ public class PostViewModel extends ViewModel {
             this.postFilter = postFilter;
             userWhere = where;
             this.readPostList = readPostList;
+            this.postEnricher = postEnricher;
         }
 
         public Factory(Executor executor, RetrofitHolder retrofit, String accessToken, String accountName,
                        SharedPreferences sharedPreferences, SharedPreferences postFeedScrolledPositionSharedPreferences,
                        SharedPreferences postHistorySharedPreferences, String name, String query, String trendingSource,
-                       int postType, SortType sortType, PostFilter postFilter, List<String> readPostList) {
+                       int postType, SortType sortType, PostFilter postFilter, List<String> readPostList,
+                       PostEnricher postEnricher) {
             this.executor = executor;
             this.retrofit = retrofit;
             this.accessToken = accessToken;
@@ -366,19 +378,23 @@ public class PostViewModel extends ViewModel {
             this.sortType = sortType;
             this.postFilter = postFilter;
             this.readPostList = readPostList;
+            this.postEnricher = postEnricher;
         }
 
         //Anonymous Front Page
         public Factory(Executor executor, RetrofitHolder retrofit, SharedPreferences sharedPreferences,
-                       String concatenatedSubredditNames, int postType, SortType sortType, PostFilter postFilter, String opt) {
+                       String concatenatedSubredditNames, int postType, SortType sortType, PostFilter postFilter,
+                       String opt, PostEnricher postEnricher) {
             this.executor = executor;
             this.retrofit = retrofit;
             this.sharedPreferences = sharedPreferences;
+            // TODO is this used? because it is getting overwritten with opt
             this.name = concatenatedSubredditNames;
             this.postType = postType;
             this.sortType = sortType;
             this.postFilter = postFilter;
             this.name = opt;
+            this.postEnricher = postEnricher;
         }
 
         @NonNull
@@ -387,23 +403,23 @@ public class PostViewModel extends ViewModel {
             if (postType == PostPagingSource.TYPE_FRONT_PAGE) {
                 return (T) new PostViewModel(executor, retrofit, accessToken, accountName, sharedPreferences,
                         postFeedScrolledPositionSharedPreferences, postHistorySharedPreferences, postType,
-                        sortType, postFilter, readPostList,name);
+                        sortType, postFilter, readPostList,name, postEnricher);
             } else if (postType == PostPagingSource.TYPE_SEARCH) {
                 return (T) new PostViewModel(executor, retrofit, accessToken, accountName, sharedPreferences,
                         postFeedScrolledPositionSharedPreferences, postHistorySharedPreferences, name, query,
-                        trendingSource, postType, sortType, postFilter, readPostList);
+                        trendingSource, postType, sortType, postFilter, readPostList, postEnricher);
             } else if (postType == PostPagingSource.TYPE_SUBREDDIT || postType == PostPagingSource.TYPE_MULTI_REDDIT) {
                 return (T) new PostViewModel(executor, retrofit, accessToken, accountName, sharedPreferences,
                         postFeedScrolledPositionSharedPreferences, postHistorySharedPreferences, name,
-                        postType, sortType, postFilter, readPostList);
+                        postType, sortType, postFilter, readPostList, postEnricher);
             } else if (postType == PostPagingSource.TYPE_ANONYMOUS_FRONT_PAGE) {
                 return (T) new PostViewModel(executor, retrofit, null, null, sharedPreferences,
                         null, null, name, postType, sortType,
-                        postFilter, null);
+                        postFilter, null, postEnricher);
             } else {
                 return (T) new PostViewModel(executor, retrofit, accessToken, accountName, sharedPreferences,
                         postFeedScrolledPositionSharedPreferences, postHistorySharedPreferences, name,
-                        postType, sortType, postFilter, userWhere, readPostList);
+                        postType, sortType, postFilter, userWhere, readPostList, postEnricher);
             }
         }
     }

app/src/main/java/eu/toldi/infinityforlemmy/post/SubmitPost.java

@@ -15,6 +15,7 @@ import eu.toldi.infinityforlemmy.Flair;
 import eu.toldi.infinityforlemmy.RetrofitHolder;
 import eu.toldi.infinityforlemmy.apis.LemmyAPI;
 import eu.toldi.infinityforlemmy.dto.SubmitPostDTO;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.utils.APIUtils;
 import eu.toldi.infinityforlemmy.utils.UploadImageUtils;
 import retrofit2.Call;
@@ -25,22 +26,24 @@ public class SubmitPost {
     public static void submitTextOrLinkPost(Executor executor, Handler handler, Retrofit oauthRetrofit, String accessToken,
                                             int communityId, String title, String body, String url,
                                             Flair flair, boolean isSpoiler, boolean isNSFW,
-                                            boolean receivePostReplyNotifications, String kind,
+                                            boolean receivePostReplyNotifications, String kind, PostEnricher postEnricher,
                                             SubmitPostListener submitPostListener) {
         submitPost(executor, handler, oauthRetrofit, accessToken, communityId, title, body,
-                isNSFW, receivePostReplyNotifications, kind, url, submitPostListener);
+                isNSFW, receivePostReplyNotifications, kind, url, postEnricher, submitPostListener);
     }
 
     public static void submitImagePost(Executor executor, Handler handler, RetrofitHolder mRetrofit,
                                        String accessToken, int communityId, String title, String body, Bitmap image,
                                        Flair flair, boolean isSpoiler, boolean isNSFW,
-                                       boolean receivePostReplyNotifications, SubmitPostListener submitPostListener) {
+                                       boolean receivePostReplyNotifications, PostEnricher postEnricher,
+                                       SubmitPostListener submitPostListener) {
         try {
             String imageUrlOrError = UploadImageUtils.uploadImage(mRetrofit, accessToken, image);
             if (imageUrlOrError != null && !imageUrlOrError.startsWith("Error: ")) {
                 submitPost(executor, handler, mRetrofit.getRetrofit(), accessToken,
                         communityId, title, body, isNSFW,
-                        receivePostReplyNotifications, APIUtils.KIND_IMAGE, imageUrlOrError, submitPostListener);
+                        receivePostReplyNotifications, APIUtils.KIND_IMAGE, imageUrlOrError,
+                        postEnricher, submitPostListener);
             } else {
                 submitPostListener.submitFailed(imageUrlOrError);
             }
@@ -53,17 +56,18 @@ public class SubmitPost {
     public static void submitCrosspost(Executor executor, Handler handler, Retrofit oauthRetrofit, String accessToken,
                                        int communityId, String title, String crosspostFullname,
                                        Flair flair, boolean isSpoiler, boolean isNSFW,
-                                       boolean receivePostReplyNotifications, String kind,
+                                       boolean receivePostReplyNotifications, String kind, PostEnricher postEnricher,
                                        SubmitPostListener submitPostListener) {
         submitPost(executor, handler, oauthRetrofit, accessToken, communityId, title, crosspostFullname,
-                isNSFW, receivePostReplyNotifications, kind, null, submitPostListener);
+                isNSFW, receivePostReplyNotifications, kind, null, postEnricher, submitPostListener);
     }
 
     private static void submitPost(Executor executor, Handler handler, Retrofit oauthRetrofit, String accessToken,
                                    int communityId, String title, String content,
                                    boolean isNSFW,
                                    boolean receivePostReplyNotifications, String kind,
-                                   @Nullable String posterUrl, SubmitPostListener submitPostListener) {
+                                   @Nullable String posterUrl, PostEnricher postEnricher,
+                                   SubmitPostListener submitPostListener) {
         LemmyAPI api = oauthRetrofit.create(LemmyAPI.class);
 
 
@@ -73,7 +77,7 @@ public class SubmitPost {
             Response<String> response = submitPostCall.execute();
             if (response.isSuccessful()) {
                 getSubmittedPost(executor, handler, response.body(), kind, oauthRetrofit, accessToken,
-                        submitPostListener);
+                        postEnricher, submitPostListener);
             } else {
                 submitPostListener.submitFailed(response.message());
             }
@@ -84,10 +88,10 @@ public class SubmitPost {
     }
 
     private static void getSubmittedPost(Executor executor, Handler handler, String response, String kind,
-                                         Retrofit oauthRetrofit, String accessToken,
+                                         Retrofit oauthRetrofit, String accessToken, PostEnricher postEnricher,
                                          SubmitPostListener submitPostListener) throws JSONException, IOException {
 
-        ParsePost.parsePost(executor, handler, response, new ParsePost.ParsePostListener() {
+        ParsePost.parsePost(executor, handler, postEnricher, response, new ParsePost.ParsePostListener() {
             @Override
             public void onParsePostSuccess(Post post) {
                 submitPostListener.submitSuccessful(post);

app/src/main/java/eu/toldi/infinityforlemmy/services/SubmitPostService.java

@@ -54,6 +54,7 @@ import eu.toldi.infinityforlemmy.events.SubmitPollPostEvent;
 import eu.toldi.infinityforlemmy.events.SubmitTextOrLinkPostEvent;
 import eu.toldi.infinityforlemmy.post.Post;
 import eu.toldi.infinityforlemmy.post.SubmitPost;
+import eu.toldi.infinityforlemmy.post.enrich.PostEnricher;
 import eu.toldi.infinityforlemmy.utils.APIUtils;
 import eu.toldi.infinityforlemmy.utils.JSONUtils;
 import eu.toldi.infinityforlemmy.utils.NotificationUtils;
@@ -102,6 +103,8 @@ public class SubmitPostService extends Service {
     CustomThemeWrapper mCustomThemeWrapper;
     @Inject
     Executor mExecutor;
+    @Inject
+    PostEnricher postEnricher;
     private Handler handler;
     private ServiceHandler serviceHandler;
 
@@ -221,7 +224,7 @@ public class SubmitPostService extends Service {
                                       String kind) {
         SubmitPost.submitTextOrLinkPost(mExecutor, handler, newAuthenticatorOauthRetrofit, selectedAccount.getAccessToken(),
                 communityId, title, body, url, flair, isSpoiler,
-                isNSFW, receivePostReplyNotifications, kind, new SubmitPost.SubmitPostListener() {
+                isNSFW, receivePostReplyNotifications, kind, postEnricher, new SubmitPost.SubmitPostListener() {
                     @Override
                     public void submitSuccessful(Post post) {
                         handler.post(() -> EventBus.getDefault().post(new SubmitTextOrLinkPostEvent(true, post, null)));
@@ -243,7 +246,7 @@ public class SubmitPostService extends Service {
                                  String title, String content, Flair flair, boolean isSpoiler, boolean isNSFW,
                                  boolean receivePostReplyNotifications) {
         SubmitPost.submitCrosspost(executor, handler, newAuthenticatorOauthRetrofit, selectedAccount.getAccessToken(), communityId, title,
-                content, flair, isSpoiler, isNSFW, receivePostReplyNotifications, APIUtils.KIND_CROSSPOST,
+                content, flair, isSpoiler, isNSFW, receivePostReplyNotifications, APIUtils.KIND_CROSSPOST, postEnricher,
                 new SubmitPost.SubmitPostListener() {
                     @Override
                     public void submitSuccessful(Post post) {
@@ -266,7 +269,8 @@ public class SubmitPostService extends Service {
         try {
             Bitmap resource = Glide.with(this).asBitmap().load(mediaUri).submit().get();
             SubmitPost.submitImagePost(mExecutor, handler, newAuthenticatorOauthRetrofit,
-                    selectedAccount.getAccessToken(), communityId, title, body, resource, flair, isSpoiler, isNSFW, receivePostReplyNotifications,
+                    selectedAccount.getAccessToken(), communityId, title, body, resource, flair, isSpoiler,
+                    isNSFW, receivePostReplyNotifications, postEnricher,
                     new SubmitPost.SubmitPostListener() {
                         @Override
                         public void submitSuccessful(Post post) {

app/src/main/java/eu/toldi/infinityforlemmy/utils/JSONUtils.java

@@ -126,6 +126,7 @@ public class JSONUtils {
     public static final String Y_KEY = "y";
     public static final String DEST_KEY = "dest";
     public static final String GIF_KEY = "gif";
+    public static final String GIFS_KEY = "gifs";
     public static final String MAX_EMOJIS_KEY = "max_emojis";
     public static final String RICHTEXT_KEY = "richtext";
     public static final String SUGGESTED_COMMENT_SORT_KEY = "suggested_comment_sort";

app/src/main/kotlin/eu/toldi/infinityforlemmy/post/enrich/CompositePostEnricher.kt

@@ -0,0 +1,11 @@
+package eu.toldi.infinityforlemmy.post.enrich
+
+import eu.toldi.infinityforlemmy.post.Post
+
+class CompositePostEnricher(private val enrichers: Set<PostEnricher>) : PostEnricher {
+    override fun enrich(posts: Collection<Post>) {
+        for (enricher in enrichers) {
+            enricher.enrich(posts)
+        }
+    }
+}

app/src/main/kotlin/eu/toldi/infinityforlemmy/post/enrich/PostEnricher.kt

@@ -0,0 +1,7 @@
+package eu.toldi.infinityforlemmy.post.enrich
+
+import eu.toldi.infinityforlemmy.post.Post
+
+interface PostEnricher {
+    fun enrich(posts: Collection<Post>)
+}

app/src/main/kotlin/eu/toldi/infinityforlemmy/post/enrich/RedGifsPostEnricher.kt

@@ -0,0 +1,56 @@
+package eu.toldi.infinityforlemmy.post.enrich
+
+import android.util.Log
+import eu.toldi.infinityforlemmy.apis.RedgifsAPI
+import eu.toldi.infinityforlemmy.post.Post
+import eu.toldi.infinityforlemmy.post.Post.Preview
+import eu.toldi.infinityforlemmy.utils.JSONUtils
+import org.json.JSONException
+import org.json.JSONObject
+import java.io.IOException
+
+class RedGifsPostEnricher(private val redgifsAPI: RedgifsAPI) : PostEnricher {
+    override fun enrich(posts: Collection<Post>) {
+        val redGifsPosts = posts.filter { it.isRedgifs && it.previews.isEmpty() }
+            .groupBy { it.gfycatId }
+
+        if (redGifsPosts.isEmpty()) {
+            return
+        }
+
+        try {
+            val response = redgifsAPI.getRedgifsMultipleData(redGifsPosts.keys.joinToString(",")).execute()
+            val body = response.body()
+            if (response.isSuccessful && body != null) {
+                try {
+                    val gifsJson = JSONObject(body).getJSONArray(JSONUtils.GIFS_KEY)
+                    for (i in 0 until gifsJson.length()) {
+                        val gifJson = gifsJson.getJSONObject(i)
+                        val id = gifJson.getString(JSONUtils.ID_KEY)
+                        val width = gifJson.getInt(JSONUtils.WIDTH_KEY)
+                        val height = gifJson.getInt(JSONUtils.HEIGHT_KEY)
+                        val thumbnail = gifJson.getJSONObject(JSONUtils.URLS_KEY)
+                            .getString(JSONUtils.THUMBNAIL_KEY)
+
+                        val previews = ArrayList(listOf(Preview(thumbnail, width, height, null, null)))
+
+                        redGifsPosts[id]?.forEach {
+                            it.previews = previews
+                        }
+                    }
+
+                } catch (e: JSONException) {
+                    Log.w(TAG, "Failed to parse JSON", e)
+                }
+            } else {
+                Log.w(TAG, "Failed fetch data. Status code ${response.code()}")
+            }
+        } catch (e: IOException) {
+            Log.w(TAG, "Failed fetch data", e)
+        }
+    }
+
+    companion object {
+        private const val TAG = "RedGifsPostEnricher"
+    }
+}