Add a feature: Searching for posts.

app/src/main/java/ml/docilealligator/infinityforreddit/FetchComment.java

@@ -1,12 +1,12 @@
 package ml.docilealligator.infinityforreddit;
 
-import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
 
+import androidx.annotation.NonNull;
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;

app/src/main/java/ml/docilealligator/infinityforreddit/PostDataSource.java

@@ -1,13 +1,13 @@
 package ml.docilealligator.infinityforreddit;
 
-import androidx.lifecycle.MutableLiveData;
-import androidx.paging.PageKeyedDataSource;
-import androidx.annotation.NonNull;
 import android.util.Log;
 
 import java.util.ArrayList;
 import java.util.Locale;
 
+import androidx.annotation.NonNull;
+import androidx.lifecycle.MutableLiveData;
+import androidx.paging.PageKeyedDataSource;
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Retrofit;
@@ -21,6 +21,7 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
     static final int TYPE_FRONT_PAGE = 0;
     static final int TYPE_SUBREDDIT = 1;
     static final int TYPE_USER = 2;
+    static final int TYPE_SEARCH = 3;
 
     private Retrofit retrofit;
     private String accessToken;
@@ -47,11 +48,11 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
         this.onPostFetchedCallback = onPostFetchedCallback;
     }
 
-    PostDataSource(Retrofit retrofit, String accessToken, Locale locale, String name, int postType, OnPostFetchedCallback onPostFetchedCallback) {
+    PostDataSource(Retrofit retrofit, String accessToken, Locale locale, String subredditName, int postType, OnPostFetchedCallback onPostFetchedCallback) {
         this.retrofit = retrofit;
         this.accessToken = accessToken;
         this.locale = locale;
-        this.name = name;
+        this.name = subredditName;
         paginationNetworkStateLiveData = new MutableLiveData();
         initialLoadStateLiveData = new MutableLiveData();
         this.postType = postType;
@@ -83,6 +84,9 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
             case TYPE_USER:
                 loadUserPostsInitial(callback, null);
                 break;
+            case TYPE_SEARCH:
+                loadSearchPostsInitial(callback);
+                break;
         }
     }
 
@@ -111,6 +115,8 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
                 break;
             case TYPE_USER:
                 loadUserPostsAfter(params, callback);
+            case TYPE_SEARCH:
+                loadSearchPostsAfter(params, callback);
         }
     }
 
@@ -344,6 +350,81 @@ class PostDataSource extends PageKeyedDataSource<String, Post> {
         });
     }
 
+    private void loadSearchPostsInitial(@NonNull final LoadInitialCallback<String, Post> callback) {
+        RedditAPI api = retrofit.create(RedditAPI.class);
+        Call<String> getPost = api.searchPosts(name, null, RedditUtils.getOAuthHeader(accessToken));
+        getPost.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, retrofit2.Response<String> response) {
+                if(response.isSuccessful()) {
+                    ParsePost.parsePost(response.body(), locale,
+                            new ParsePost.ParsePostListener() {
+                                @Override
+                                public void onParsePostSuccess(ArrayList<Post> newPosts, String lastItem) {
+                                    if(newPosts.size() == 0) {
+                                        onPostFetchedCallback.noPost();
+                                    } else {
+                                        onPostFetchedCallback.hasPost();
+                                    }
+
+                                    callback.onResult(newPosts, null, lastItem);
+                                    initialLoadStateLiveData.postValue(NetworkState.LOADED);
+                                }
+
+                                @Override
+                                public void onParsePostFail() {
+                                    Log.i("Post fetch error", "Error parsing data");
+                                    initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, "Error parsing data"));
+                                }
+                            });
+                } else {
+                    Log.i("Post fetch error", response.message());
+                    initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, response.message()));
+                }
+            }
+
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                String errorMessage = t == null ? "unknown error" : t.getMessage();
+                initialLoadStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, errorMessage));
+            }
+        });
+    }
+
+    private void loadSearchPostsAfter(@NonNull LoadParams<String> params, @NonNull final LoadCallback<String, Post> callback) {
+        RedditAPI api = retrofit.create(RedditAPI.class);
+        Call<String> getPost = api.searchPosts(name, params.key, RedditUtils.getOAuthHeader(accessToken));
+        getPost.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(Call<String> call, retrofit2.Response<String> response) {
+                if(response.isSuccessful()) {
+                    ParsePost.parsePost(response.body(), locale, new ParsePost.ParsePostListener() {
+                        @Override
+                        public void onParsePostSuccess(ArrayList<Post> newPosts, String lastItem) {
+                            callback.onResult(newPosts, lastItem);
+                            paginationNetworkStateLiveData.postValue(NetworkState.LOADED);
+                        }
+
+                        @Override
+                        public void onParsePostFail() {
+                            Log.i("Best post", "Error parsing data");
+                            paginationNetworkStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, "Error parsing data"));
+                        }
+                    });
+                } else {
+                    Log.i("Best post", response.message());
+                    paginationNetworkStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, response.message()));
+                }
+            }
+
+            @Override
+            public void onFailure(Call<String> call, Throwable t) {
+                String errorMessage = t == null ? "unknown error" : t.getMessage();
+                paginationNetworkStateLiveData.postValue(new NetworkState(NetworkState.Status.FAILED, errorMessage));
+            }
+        });
+    }
+
     void retry() {
         loadInitial(initialParams, initialCallback);
     }

app/src/main/java/ml/docilealligator/infinityforreddit/RedditAPI.java

@@ -58,14 +58,18 @@ public interface RedditAPI {
     Call<String> getInfo(@Path("subredditNamePrefixed") String subredditNamePrefixed, @Query("id") String id);
 
     @GET("subreddits/search.json?raw_json=1&include_over_18=on")
-    Call<String> searchSubreddits(@Query("q") String subredditName, @Query("after") String after);
+    Call<String> searchSubreddits(@Query("q") String subredditName, @Query("after") String after,
+                                  @HeaderMap Map<String, String> headers);
 
-    @GET("/profiles/search.json?raw_json=1")
+    @GET("profiles/search.json?raw_json=1")
-    Call<String> searchProfiles(@Query("q") String profileName, @Query("after") String after);
+    Call<String> searchProfiles(@Query("q") String profileName, @Query("after") String after,
+                                @HeaderMap Map<String, String> headers);
 
-    @GET("/search.json?raw_json=1")
+    @GET("search.json?raw_json=1&type=link")
-    Call<String> searchPosts(@Query("q") String query, @Query("after") String after);
+    Call<String> searchPosts(@Query("q") String query, @Query("after") String after,
+                             @HeaderMap Map<String, String> headers);
 
-    @GET("/r/{subredditName}/search.json?raw_json=1&restrict_sr=true")
+    @GET("r/{subredditName}/search.json?raw_json=1&type=link&restrict_sr=true")
-    Call<String> searchPostsInSpecificSubreddit(@Query("q") String query, @Query("after") String after);
+    Call<String> searchPostsInSpecificSubreddit(@Query("q") String query, @Query("after") String after,
+                                                @HeaderMap Map<String, String> headers);
 }

app/src/main/java/ml/docilealligator/infinityforreddit/SearchActivity.java

@@ -17,6 +17,7 @@ import androidx.viewpager.widget.ViewPager;
 public class SearchActivity extends AppCompatActivity {
     static final String QUERY_KEY = "QK";
 
+    private String mQuery;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -36,6 +37,7 @@ public class SearchActivity extends AppCompatActivity {
         Intent intent = getIntent();
         String query = intent.getExtras().getString(QUERY_KEY);
         if(query != null) {
+            mQuery = query;
             setTitle(query);
         }
     }
@@ -58,13 +60,33 @@ public class SearchActivity extends AppCompatActivity {
 
         @Override
         public Fragment getItem(int position) {
-            // getItem is called to instantiate the fragment for the given page.
+            switch (position) {
-            // Return a PlaceholderFragment (defined as a static inner class below).
+                case 0: {
-            PostFragment mFragment = new PostFragment();
+                    PostFragment mFragment = new PostFragment();
-            Bundle bundle = new Bundle();
+                    Bundle bundle = new Bundle();
-            bundle.putInt(PostFragment.POST_TYPE_KEY, PostDataSource.TYPE_FRONT_PAGE);
+                    bundle.putInt(PostFragment.POST_TYPE_KEY, PostDataSource.TYPE_SEARCH);
-            mFragment.setArguments(bundle);
+                    bundle.putString(PostFragment.NAME_KEY, mQuery);
-            return mFragment;
+                    mFragment.setArguments(bundle);
+                    return mFragment;
+                }
+                case 1: {
+                    PostFragment mFragment = new PostFragment();
+                    Bundle bundle = new Bundle();
+                    bundle.putInt(PostFragment.POST_TYPE_KEY, PostDataSource.TYPE_FRONT_PAGE);
+                    bundle.putString(PostFragment.NAME_KEY, mQuery);
+                    mFragment.setArguments(bundle);
+                    return mFragment;
+                }
+                default:
+                {
+                    PostFragment mFragment = new PostFragment();
+                    Bundle bundle = new Bundle();
+                    bundle.putInt(PostFragment.POST_TYPE_KEY, PostDataSource.TYPE_FRONT_PAGE);
+                    bundle.putString(PostFragment.NAME_KEY, mQuery);
+                    mFragment.setArguments(bundle);
+                    return mFragment;
+                }
+            }
         }
 
         @Override

app/src/main/java/ml/docilealligator/infinityforreddit/ViewPostDetailActivity.java

@@ -7,16 +7,6 @@ import android.graphics.PorterDuff;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
-import androidx.annotation.Nullable;
-import androidx.browser.customtabs.CustomTabsIntent;
-import com.google.android.material.chip.Chip;
-import androidx.coordinatorlayout.widget.CoordinatorLayout;
-import com.google.android.material.snackbar.Snackbar;
-import androidx.core.content.ContextCompat;
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.cardview.widget.CardView;
-import androidx.recyclerview.widget.DividerItemDecoration;
-import androidx.recyclerview.widget.LinearLayoutManager;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.ImageView;
@@ -34,6 +24,8 @@ import com.bumptech.glide.load.engine.GlideException;
 import com.bumptech.glide.request.RequestListener;
 import com.bumptech.glide.request.RequestOptions;
 import com.bumptech.glide.request.target.Target;
+import com.google.android.material.chip.Chip;
+import com.google.android.material.snackbar.Snackbar;
 import com.lsjwzh.widget.materialloadingprogressbar.CircleProgressBar;
 import com.multilevelview.MultiLevelRecyclerView;
 import com.santalu.aspectratioimageview.AspectRatioImageView;
@@ -46,6 +38,14 @@ import javax.inject.Named;
 
 import CustomView.AspectRatioGifImageView;
 import SubredditDatabase.SubredditRoomDatabase;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.browser.customtabs.CustomTabsIntent;
+import androidx.cardview.widget.CardView;
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.DividerItemDecoration;
+import androidx.recyclerview.widget.LinearLayoutManager;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 import jp.wasabeef.glide.transformations.BlurTransformation;