Support viewing gfycat videos in app.

11 files changed, 262 insertions, 72 deletions

diff --git a/app/build.gradle b/app/build.gradle
index 3f99cdd2..f81be110 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -42,6 +42,7 @@ dependencies {
 
     implementation 'com.google.android.exoplayer:exoplayer-core:2.10.4'
     implementation 'com.google.android.exoplayer:exoplayer-hls:2.10.4'
+    implementation 'com.google.android.exoplayer:exoplayer-dash:2.10.4'
     implementation 'com.google.android.exoplayer:exoplayer-ui:2.10.4'
     implementation 'com.alexvasilkov:gesture-views:2.6.0'
     implementation 'com.github.bumptech.glide:glide:4.10.0'
@@ -64,7 +65,7 @@ dependencies {
     implementation 'io.noties.markwon:simple-ext:4.3.1'
     implementation 'io.noties.markwon:recycler-table:4.3.1'
     implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.19'
-    implementation 'com.github.Ferfalk:SimpleSearchView:0.1.5'
+    implementation 'com.github.Ferfalk:SimpleSearchView:0.1.4'
     implementation 'org.greenrobot:eventbus:3.2.0'
     implementation 'com.libRG:customtextview:2.4'
     implementation 'com.github.Deishelon:RoundedBottomSheet:1.0.1'
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 08f83a69..98d07788 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -21,10 +21,11 @@
         android:theme="@style/AppTheme"
         android:usesCleartextTraffic="true"
         tools:replace="android:label">
-        <activity android:name=".Activity.ReportActivity"
+        <activity
+            android:name=".Activity.ReportActivity"
             android:label="@string/report_activity_label"
             android:parentActivityName=".Activity.MainActivity"
-            android:theme="@style/AppTheme.NoActionBar"/>
+            android:theme="@style/AppTheme.NoActionBar" />
         <activity
             android:name=".Activity.SelectedSubredditsActivity"
             android:label="@string/selected_subeddits_activity_label"
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/LinkResolverActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/LinkResolverActivity.java
index 6719fe54..52c6ddc3 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/LinkResolverActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/LinkResolverActivity.java
@@ -38,6 +38,7 @@ public class LinkResolverActivity extends AppCompatActivity {
     private static final String MULTIREDDIT_PATTERN = "/user/\\w+/m/\\w+/?";
     private static final String MULTIREDDIT_PATTERN_2 = "/[rR]/(\\w+\\+?)+/?";
     private static final String REDD_IT_POST_PATTERN = "/\\w+/?";
+    private static final String GFYCAT_PATTERN = "/[\\w-]+$";
 
     @Inject
     @Named("default")
@@ -78,78 +79,89 @@ public class LinkResolverActivity extends AppCompatActivity {
                 String authority = uri.getAuthority();
                 List<String> segments = uri.getPathSegments();
 
-                if (authority != null && (authority.contains("reddit.com") || authority.contains("redd.it") || authority.contains("reddit.app"))) {
-                    if (authority.equals("reddit.app.link") && path.isEmpty()) {
-                        String redirect = uri.getQueryParameter("$og_redirect");
-                        handleUri(Uri.parse(redirect));
-                    } else if (path.isEmpty()) {
-                        Intent intent = new Intent(this, MainActivity.class);
-                        startActivity(intent);
-                    } else if (path.matches(POST_PATTERN)) {
-                        int commentsIndex = segments.lastIndexOf("comments");
-                        if (commentsIndex >= 0 && commentsIndex < segments.size() - 1) {
-                            Intent intent = new Intent(this, ViewPostDetailActivity.class);
-                            intent.putExtra(ViewPostDetailActivity.EXTRA_POST_ID, segments.get(commentsIndex + 1));
-                            intent.putExtra(ViewPostDetailActivity.EXTRA_MESSAGE_FULLNAME, messageFullname);
-                            intent.putExtra(ViewPostDetailActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
+                if (authority != null) {
+                    if (authority.contains("reddit.com") || authority.contains("redd.it") || authority.contains("reddit.app")) {
+                        if (authority.equals("reddit.app.link") && path.isEmpty()) {
+                            String redirect = uri.getQueryParameter("$og_redirect");
+                            handleUri(Uri.parse(redirect));
+                        } else if (path.isEmpty()) {
+                            Intent intent = new Intent(this, MainActivity.class);
                             startActivity(intent);
-                        } else {
-                            deepLinkError(uri);
-                        }
-                    } else if (path.matches(COMMENT_PATTERN)) {
-                        int commentsIndex = segments.lastIndexOf("comments");
-                        if (commentsIndex >= 0 && commentsIndex < segments.size() - 1) {
+                        } else if (path.matches(POST_PATTERN)) {
+                            int commentsIndex = segments.lastIndexOf("comments");
+                            if (commentsIndex >= 0 && commentsIndex < segments.size() - 1) {
+                                Intent intent = new Intent(this, ViewPostDetailActivity.class);
+                                intent.putExtra(ViewPostDetailActivity.EXTRA_POST_ID, segments.get(commentsIndex + 1));
+                                intent.putExtra(ViewPostDetailActivity.EXTRA_MESSAGE_FULLNAME, messageFullname);
+                                intent.putExtra(ViewPostDetailActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
+                                startActivity(intent);
+                            } else {
+                                deepLinkError(uri);
+                            }
+                        } else if (path.matches(COMMENT_PATTERN)) {
+                            int commentsIndex = segments.lastIndexOf("comments");
+                            if (commentsIndex >= 0 && commentsIndex < segments.size() - 1) {
+                                Intent intent = new Intent(this, ViewPostDetailActivity.class);
+                                intent.putExtra(ViewPostDetailActivity.EXTRA_POST_ID, segments.get(commentsIndex + 1));
+                                intent.putExtra(ViewPostDetailActivity.EXTRA_SINGLE_COMMENT_ID, segments.get(segments.size() - 1));
+                                intent.putExtra(ViewPostDetailActivity.EXTRA_MESSAGE_FULLNAME, messageFullname);
+                                intent.putExtra(ViewPostDetailActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
+                                startActivity(intent);
+                            } else {
+                                deepLinkError(uri);
+                            }
+                        } else if (path.matches(SUBREDDIT_PATTERN)) {
+                            String subredditName = path.substring(3);
+                            if (subredditName.equals("popular") || subredditName.equals("all")) {
+                                Intent intent = new Intent(this, MainActivity.class);
+                                intent.putExtra(MainActivity.EXTRA_POST_TYPE, subredditName);
+                                intent.putExtra(MainActivity.EXTRA_MESSSAGE_FULLNAME, messageFullname);
+                                intent.putExtra(MainActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
+                                startActivity(intent);
+                            } else {
+                                Intent intent = new Intent(this, ViewSubredditDetailActivity.class);
+                                intent.putExtra(ViewSubredditDetailActivity.EXTRA_SUBREDDIT_NAME_KEY, path.substring(3));
+                                intent.putExtra(ViewSubredditDetailActivity.EXTRA_MESSAGE_FULLNAME, messageFullname);
+                                intent.putExtra(ViewSubredditDetailActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
+                                startActivity(intent);
+                            }
+                        } else if (path.matches(USER_PATTERN)) {
+                            Intent intent = new Intent(this, ViewUserDetailActivity.class);
+                            intent.putExtra(ViewUserDetailActivity.EXTRA_USER_NAME_KEY, segments.get(1));
+                            intent.putExtra(ViewUserDetailActivity.EXTRA_MESSAGE_FULLNAME, messageFullname);
+                            intent.putExtra(ViewUserDetailActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
+                            startActivity(intent);
+                        } else if (path.matches(SIDEBAR_PATTERN)) {
+                            Intent intent = new Intent(this, ViewSidebarActivity.class);
+                            intent.putExtra(ViewSidebarActivity.EXTRA_SUBREDDIT_NAME, path.substring(3, path.length() - 14));
+                            startActivity(intent);
+                        } else if (path.matches(MULTIREDDIT_PATTERN)) {
+                            Intent intent = new Intent(this, ViewMultiRedditDetailActivity.class);
+                            intent.putExtra(ViewMultiRedditDetailActivity.EXTRA_MULTIREDDIT_PATH, path);
+                            startActivity(intent);
+                        } else if (path.matches(MULTIREDDIT_PATTERN_2)) {
+                            String subredditName = path.substring(3);
+                            Intent intent = new Intent(this, ViewSubredditDetailActivity.class);
+                            intent.putExtra(ViewSubredditDetailActivity.EXTRA_SUBREDDIT_NAME_KEY, subredditName);
+                            intent.putExtra(ViewSubredditDetailActivity.EXTRA_MESSAGE_FULLNAME, messageFullname);
+                            intent.putExtra(ViewSubredditDetailActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
+                            startActivity(intent);
+                        } else if (authority.equals("redd.it") && path.matches(REDD_IT_POST_PATTERN)) {
                             Intent intent = new Intent(this, ViewPostDetailActivity.class);
-                            intent.putExtra(ViewPostDetailActivity.EXTRA_POST_ID, segments.get(commentsIndex + 1));
-                            intent.putExtra(ViewPostDetailActivity.EXTRA_SINGLE_COMMENT_ID, segments.get(segments.size() - 1));
-                            intent.putExtra(ViewPostDetailActivity.EXTRA_MESSAGE_FULLNAME, messageFullname);
-                            intent.putExtra(ViewPostDetailActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
+                            intent.putExtra(ViewPostDetailActivity.EXTRA_POST_ID, path.substring(1));
                             startActivity(intent);
                         } else {
                             deepLinkError(uri);
                         }
-                    } else if (path.matches(SUBREDDIT_PATTERN)) {
-                        String subredditName = path.substring(3);
-                        if (subredditName.equals("popular") || subredditName.equals("all")) {
-                            Intent intent = new Intent(this, MainActivity.class);
-                            intent.putExtra(MainActivity.EXTRA_POST_TYPE, subredditName);
-                            intent.putExtra(MainActivity.EXTRA_MESSSAGE_FULLNAME, messageFullname);
-                            intent.putExtra(MainActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
+                    } else if (authority.contains("gfycat.com")) {
+                        if (path.matches(GFYCAT_PATTERN)) {
+                            Intent intent = new Intent(this, ViewVideoActivity.class);
+                            intent.putExtra(ViewVideoActivity.EXTRA_GFYCAT_ID, path.substring(1));
+                            intent.putExtra(ViewVideoActivity.EXTRA_VIDEO_TYPE, ViewVideoActivity.VIDEO_TYPE_GFYCAT);
                             startActivity(intent);
                         } else {
-                            Intent intent = new Intent(this, ViewSubredditDetailActivity.class);
-                            intent.putExtra(ViewSubredditDetailActivity.EXTRA_SUBREDDIT_NAME_KEY, path.substring(3));
-                            intent.putExtra(ViewSubredditDetailActivity.EXTRA_MESSAGE_FULLNAME, messageFullname);
-                            intent.putExtra(ViewSubredditDetailActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
-                            startActivity(intent);
+                            deepLinkError(uri);
                         }
-                    } else if (path.matches(USER_PATTERN)) {
-                        Intent intent = new Intent(this, ViewUserDetailActivity.class);
-                        intent.putExtra(ViewUserDetailActivity.EXTRA_USER_NAME_KEY, segments.get(1));
-                        intent.putExtra(ViewUserDetailActivity.EXTRA_MESSAGE_FULLNAME, messageFullname);
-                        intent.putExtra(ViewUserDetailActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
-                        startActivity(intent);
-                    } else if (path.matches(SIDEBAR_PATTERN)) {
-                        Intent intent = new Intent(this, ViewSidebarActivity.class);
-                        intent.putExtra(ViewSidebarActivity.EXTRA_SUBREDDIT_NAME, path.substring(3, path.length() - 14));
-                        startActivity(intent);
-                    } else if (path.matches(MULTIREDDIT_PATTERN)) {
-                        Intent intent = new Intent(this, ViewMultiRedditDetailActivity.class);
-                        intent.putExtra(ViewMultiRedditDetailActivity.EXTRA_MULTIREDDIT_PATH, path);
-                        startActivity(intent);
-                    } else if (path.matches(MULTIREDDIT_PATTERN_2)) {
-                        String subredditName = path.substring(3);
-                        Intent intent = new Intent(this, ViewSubredditDetailActivity.class);
-                        intent.putExtra(ViewSubredditDetailActivity.EXTRA_SUBREDDIT_NAME_KEY, subredditName);
-                        intent.putExtra(ViewSubredditDetailActivity.EXTRA_MESSAGE_FULLNAME, messageFullname);
-                        intent.putExtra(ViewSubredditDetailActivity.EXTRA_NEW_ACCOUNT_NAME, newAccountName);
-                        startActivity(intent);
-                    } else if (authority.equals("redd.it") && path.matches(REDD_IT_POST_PATTERN)) {
-                        Intent intent = new Intent(this, ViewPostDetailActivity.class);
-                        intent.putExtra(ViewPostDetailActivity.EXTRA_POST_ID, path.substring(1));
-                        startActivity(intent);
-                    } else {
-                        deepLinkError(uri);
                     }
                 } else {
                     deepLinkError(uri);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewVideoActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewVideoActivity.java
index 00f9e848..324acbfb 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewVideoActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewVideoActivity.java
@@ -40,7 +40,9 @@ import com.github.pwittchen.swipe.library.rx2.Swipe;
 import com.google.android.exoplayer2.ExoPlayerFactory;
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.source.ProgressiveMediaSource;
 import com.google.android.exoplayer2.source.TrackGroupArray;
+import com.google.android.exoplayer2.source.dash.DashMediaSource;
 import com.google.android.exoplayer2.source.hls.HlsMediaSource;
 import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
@@ -49,6 +51,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.trackselection.TrackSelector;
 import com.google.android.exoplayer2.ui.PlayerView;
 import com.google.android.exoplayer2.upstream.DataSource;
+import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
 import com.google.android.exoplayer2.upstream.DefaultHttpDataSourceFactory;
 import com.google.android.exoplayer2.util.Util;
 
@@ -59,9 +62,11 @@ import javax.inject.Named;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
+import ml.docilealligator.infinityforreddit.FetchGfycatVideoLinks;
 import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
+import retrofit2.Retrofit;
 
 public class ViewVideoActivity extends AppCompatActivity {
 
@@ -70,8 +75,14 @@ public class ViewVideoActivity extends AppCompatActivity {
     public static final String EXTRA_ID = "EI";
     public static final String EXTRA_POST_TITLE = "EPT";
     public static final String EXTRA_PROGRESS_SECONDS = "EPS";
+    public static final String EXTRA_VIDEO_TYPE = "EVT";
+    public static final String EXTRA_GFYCAT_ID = "EGI";
+    public static final int VIDEO_TYPE_GFYCAT = 1;
+    private static final int VIDEO_TYPE_NORMAL = 0;
     private static final int PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE = 0;
     private static final String IS_MUTE_STATE = "IMS";
+    private static final String VIDEO_DOWNLOAD_URL_STATE = "VDUS";
+    private static final String VIDEO_URI_STATE = "VUS";
     @BindView(R.id.relative_layout_view_video_activity)
     RelativeLayout relativeLayout;
     @BindView(R.id.player_view_view_video_activity)
@@ -97,6 +108,10 @@ public class ViewVideoActivity extends AppCompatActivity {
     private long resumePosition = -1;
 
     @Inject
+    @Named("gfycat")
+    Retrofit gfycatRetrofit;
+
+    @Inject
     @Named("default")
     SharedPreferences mSharedPreferences;
 
@@ -133,8 +148,6 @@ public class ViewVideoActivity extends AppCompatActivity {
 
         Intent intent = getIntent();
         mVideoUri = intent.getData();
-        videoDownloadUrl = intent.getStringExtra(EXTRA_VIDEO_DOWNLOAD_URL);
-        videoFileName = intent.getStringExtra(EXTRA_SUBREDDIT) + "-" + intent.getStringExtra(EXTRA_ID) + ".mp4";
         postTitle = intent.getStringExtra(EXTRA_POST_TITLE);
         if (savedInstanceState == null) {
             resumePosition = intent.getLongExtra(EXTRA_PROGRESS_SECONDS, -1);
@@ -319,11 +332,57 @@ public class ViewVideoActivity extends AppCompatActivity {
         TrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
         player = ExoPlayerFactory.newSimpleInstance(this, trackSelector);
         videoPlayerView.setPlayer(player);
-        // Produces DataSource instances through which media data is loaded.
-        dataSourceFactory = new DefaultHttpDataSourceFactory(Util.getUserAgent(this, "Infinity"));
-        // Prepare the player with the source.
-        player.prepare(new HlsMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+        if (getIntent().getIntExtra(EXTRA_VIDEO_TYPE, VIDEO_TYPE_NORMAL) == VIDEO_TYPE_GFYCAT) {
+            if (savedInstanceState != null) {
+                String videoUrl = savedInstanceState.getString(VIDEO_URI_STATE);
+                if (videoUrl != null) {
+                    mVideoUri = Uri.parse(videoUrl);
+                    videoDownloadUrl = savedInstanceState.getString(VIDEO_DOWNLOAD_URL_STATE);
+                }
+            }
 
+            if (mVideoUri == null) {
+                String gfycatId = intent.getStringExtra(EXTRA_GFYCAT_ID);
+                if (gfycatId != null && gfycatId.contains("-")) {
+                    gfycatId = gfycatId.substring(0, gfycatId.indexOf('-'));
+                }
+                videoFileName = "Gfycat-" + gfycatId + ".mp4";
+                FetchGfycatVideoLinks.fetchGfycatVideoLinks(gfycatRetrofit, gfycatId,
+                        new FetchGfycatVideoLinks.FetchGfycatVideoLinksListener() {
+                            @Override
+                            public void success(String webm, String mp4) {
+                                mVideoUri = Uri.parse(webm);
+                                videoDownloadUrl = mp4;
+                                dataSourceFactory = new DefaultDataSourceFactory(ViewVideoActivity.this,
+                                        Util.getUserAgent(ViewVideoActivity.this, "Infinity"));
+                                player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+                                preparePlayer(savedInstanceState);
+                            }
+
+                            @Override
+                            public void failed() {
+                                Toast.makeText(ViewVideoActivity.this, R.string.fetch_gfycat_video_failed, Toast.LENGTH_SHORT).show();
+                            }
+                        });
+            } else {
+                dataSourceFactory = new DefaultDataSourceFactory(ViewVideoActivity.this,
+                        Util.getUserAgent(ViewVideoActivity.this, "Infinity"));
+                player.prepare(new DashMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+                preparePlayer(savedInstanceState);
+            }
+        } else {
+            videoDownloadUrl = intent.getStringExtra(EXTRA_VIDEO_DOWNLOAD_URL);
+            videoFileName = intent.getStringExtra(EXTRA_SUBREDDIT) + "-" + intent.getStringExtra(EXTRA_ID) + ".mp4";
+            // Produces DataSource instances through which media data is loaded.
+            dataSourceFactory = new DefaultHttpDataSourceFactory(Util.getUserAgent(this, "Infinity"));
+            // Prepare the player with the source.
+            player.prepare(new HlsMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+        }
+
+        preparePlayer(savedInstanceState);
+    }
+
+    private void preparePlayer(Bundle savedInstanceState) {
         player.setRepeatMode(Player.REPEAT_MODE_ALL);
         if (resumePosition > 0) {
             player.seekTo(resumePosition);
@@ -405,6 +464,11 @@ public class ViewVideoActivity extends AppCompatActivity {
                 finish();
                 return true;
             case R.id.action_download_view_video_activity:
+                if (videoDownloadUrl == null) {
+                    Toast.makeText(this, R.string.fetching_video_info_please_wait, Toast.LENGTH_SHORT).show();
+                    return true;
+                }
+
                 isDownloading = true;
                 if (Build.VERSION.SDK_INT >= 23) {
                     if (ContextCompat.checkSelfPermission(this,
@@ -512,5 +576,9 @@ public class ViewVideoActivity extends AppCompatActivity {
     protected void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putBoolean(IS_MUTE_STATE, isMute);
+        if (mVideoUri != null) {
+            outState.putString(VIDEO_URI_STATE, mVideoUri.toString());
+            outState.putString(VIDEO_DOWNLOAD_URL_STATE, videoDownloadUrl);
+        }
     }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/AppModule.java b/app/src/main/java/ml/docilealligator/infinityforreddit/AppModule.java
index a15c01ab..e65d435e 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/AppModule.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/AppModule.java
@@ -91,6 +91,16 @@ class AppModule {
     }
 
     @Provides
+    @Named("gfycat")
+    @Singleton
+    Retrofit provideGfycatRetrofit() {
+        return new Retrofit.Builder()
+                .baseUrl(RedditUtils.GFYCAT_API_BASE_URI)
+                .addConverterFactory(ScalarsConverterFactory.create())
+                .build();
+    }
+
+    @Provides
     @Singleton
     OkHttpClient provideOkHttpClient(@Named("no_oauth") Retrofit retrofit, RedditDataRoomDatabase accountRoomDatabase) {
         OkHttpClient.Builder okHttpClientBuilder = new OkHttpClient.Builder();
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/FetchGfycatVideoLinks.java b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchGfycatVideoLinks.java
new file mode 100644
index 00000000..49f823f9
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/FetchGfycatVideoLinks.java
@@ -0,0 +1,78 @@
+package ml.docilealligator.infinityforreddit;
+
+import android.os.AsyncTask;
+
+import androidx.annotation.NonNull;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import ml.docilealligator.infinityforreddit.Utils.JSONUtils;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import retrofit2.Retrofit;
+
+public class FetchGfycatVideoLinks {
+    public interface FetchGfycatVideoLinksListener {
+        void success(String webm, String mp4);
+        void failed();
+    }
+
+    public static void fetchGfycatVideoLinks(Retrofit gfycatRetrofit, String gfycatId,
+                                             FetchGfycatVideoLinksListener fetchGfycatVideoLinksListener) {
+        gfycatRetrofit.create(GfycatAPI.class).getSubredditData(gfycatId).enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
+                if (response.isSuccessful()) {
+                    new ParseGfycatVideoLinksAsyncTask(response.body(), fetchGfycatVideoLinksListener).execute();
+                } else {
+                    fetchGfycatVideoLinksListener.failed();
+                }
+            }
+
+            @Override
+            public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
+                fetchGfycatVideoLinksListener.failed();
+            }
+        });
+    }
+
+    private static class ParseGfycatVideoLinksAsyncTask extends AsyncTask<Void, Void, Void> {
+
+        private String response;
+        private String webm;
+        private String mp4;
+        private boolean parseFailed = false;
+        private FetchGfycatVideoLinksListener fetchGfycatVideoLinksListener;
+
+        ParseGfycatVideoLinksAsyncTask(String response, FetchGfycatVideoLinksListener fetchGfycatVideoLinksListener) {
+            this.response = response;
+            this.fetchGfycatVideoLinksListener = fetchGfycatVideoLinksListener;
+        }
+
+        @Override
+        protected Void doInBackground(Void... voids) {
+            try {
+                JSONObject jsonObject = new JSONObject(response);
+                webm = jsonObject.getJSONObject(JSONUtils.GFY_ITEM_KEY).getString(JSONUtils.WEBM_URL_KEY);
+                mp4 = jsonObject.getJSONObject(JSONUtils.GFY_ITEM_KEY).getString(JSONUtils.MP4_URL_KEY);
+            } catch (JSONException e) {
+                e.printStackTrace();
+                parseFailed = true;
+            }
+
+            return null;
+        }
+
+        @Override
+        protected void onPostExecute(Void aVoid) {
+            super.onPostExecute(aVoid);
+            if (parseFailed) {
+                fetchGfycatVideoLinksListener.failed();
+            } else {
+                fetchGfycatVideoLinksListener.success(webm, mp4);
+            }
+        }
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/GfycatAPI.java b/app/src/main/java/ml/docilealligator/infinityforreddit/GfycatAPI.java
new file mode 100644
index 00000000..0ea675e3
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/GfycatAPI.java
@@ -0,0 +1,10 @@
+package ml.docilealligator.infinityforreddit;
+
+import retrofit2.Call;
+import retrofit2.http.GET;
+import retrofit2.http.Path;
+
+public interface GfycatAPI {
+    @GET("{gfyid}")
+    Call<String> getSubredditData(@Path("gfyid") String gfyId);
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Utils/JSONUtils.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Utils/JSONUtils.java
index ab3081b9..57064f39 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Utils/JSONUtils.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Utils/JSONUtils.java
@@ -106,4 +106,7 @@ public class JSONUtils {
     public static final String PATH_KEY = "path";
     public static final String ALL_AWARDINGS_KEY = "all_awardings";
     public static final String RESIZED_ICONS_KEY = "resized_icons";
+    public static final String GFY_ITEM_KEY = "gfyItem";
+    public static final String MP4_URL_KEY = "mp4Url";
+    public static final String WEBM_URL_KEY = "webmUrl";
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Utils/RedditUtils.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Utils/RedditUtils.java
index b42cbff1..5d901277 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Utils/RedditUtils.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Utils/RedditUtils.java
@@ -18,6 +18,7 @@ public class RedditUtils {
     public static final String API_BASE_URI = "https://www.reddit.com";
     public static final String API_UPLOAD_MEDIA_URI = "https://reddit-uploaded-media.s3-accelerate.amazonaws.com";
     public static final String API_UPLOAD_VIDEO_URI = "https://reddit-uploaded-video.s3-accelerate.amazonaws.com";
+    public static final String GFYCAT_API_BASE_URI = "https://api.gfycat.com/v1/gfycats/";
 
     public static final String CLIENT_ID_KEY = "client_id";
     public static final String CLIENT_ID = "";
diff --git a/app/src/main/res/values/attr.xml b/app/src/main/res/values/attr.xml
index 59df6280..f9b5058b 100644
--- a/app/src/main/res/values/attr.xml
+++ b/app/src/main/res/values/attr.xml
@@ -37,4 +37,7 @@
         <attr name="backgroundColor" format="color"/>
         <attr name="cardViewBackgroundColor" format="color"/>
     </declare-styleable>
+
+    <attr name="backIconAlpha"/>
+    <attr name="iconsAlpha"/>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b44a5157..8a695ffd 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -731,4 +731,7 @@
     <string name="home">Home</string>
     <string name="popular">Popular</string>
 
+    <string name="fetch_gfycat_video_failed">Fetch Gfycat video failed</string>
+    <string name="fetching_video_info_please_wait">Fetching video info. Please wait.</string>
+
 </resources>