Suggest and auto fill title and description based on image location

app/src/main/java/fr/free/nrw/commons/nearby/NearbyPlaces.java

@@ -91,7 +91,7 @@ List<Place> radiusExpander(LatLng curLatLng, String lang, boolean returnClosestR
      * @return list of places obtained
      * @throws IOException if query fails
      */
-    private List<Place> getFromWikidataQuery(LatLng cur, String lang, double radius) throws IOException {
+    public List<Place> getFromWikidataQuery(LatLng cur, String lang, double radius) throws IOException {
         return okHttpJsonApiClient.getNearbyPlaces(cur, lang, radius).blockingSingle();
     }
 }

app/src/main/java/fr/free/nrw/commons/repository/UploadRemoteDataSource.java

@@ -1,7 +1,9 @@
 package fr.free.nrw.commons.repository;
 
+import java.io.IOException;
 import java.util.Comparator;
 import java.util.List;
+import java.util.Locale;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
@@ -10,6 +12,8 @@
 import fr.free.nrw.commons.category.CategoryItem;
 import fr.free.nrw.commons.contributions.Contribution;
 import fr.free.nrw.commons.filepicker.UploadableFile;
+import fr.free.nrw.commons.location.LatLng;
+import fr.free.nrw.commons.nearby.NearbyPlaces;
 import fr.free.nrw.commons.nearby.Place;
 import fr.free.nrw.commons.upload.SimilarImageInterface;
 import fr.free.nrw.commons.upload.UploadController;
@@ -24,16 +28,21 @@
 @Singleton
 public class UploadRemoteDataSource {
 
+    private static final double NEARBY_RADIUS_IN_KILO_METERS = 0.1; //100 meters
+
     private UploadModel uploadModel;
     private UploadController uploadController;
     private CategoriesModel categoriesModel;
+    private NearbyPlaces nearbyPlaces;
 
     @Inject
     public UploadRemoteDataSource(UploadModel uploadModel, UploadController uploadController,
-                                  CategoriesModel categoriesModel) {
+                                  CategoriesModel categoriesModel,
+                                  NearbyPlaces nearbyPlaces) {
         this.uploadModel = uploadModel;
         this.uploadController = uploadController;
         this.categoriesModel = categoriesModel;
+        this.nearbyPlaces = nearbyPlaces;
     }
 
     /**
@@ -176,4 +185,22 @@ public Observable<UploadItem> preProcessImage(UploadableFile uploadableFile, Pla
     public Single<Integer> getImageQuality(UploadItem uploadItem, boolean shouldValidateTitle) {
         return uploadModel.getImageQuality(uploadItem, shouldValidateTitle);
     }
+
+    /**
+     * gets nearby places matching with upload item's GPS location
+     *
+     * @param latitude
+     * @param longitude
+     * @return
+     */
+    public Place getNearbyPlaces(double latitude, double longitude) {
+        try {
+            List<Place> fromWikidataQuery = nearbyPlaces.getFromWikidataQuery(new LatLng(latitude, longitude, 0.0f),
+                    Locale.getDefault().getLanguage(),
+                    NEARBY_RADIUS_IN_KILO_METERS);
+            return fromWikidataQuery.size() > 0 ? fromWikidataQuery.get(0) : null;
+        } catch (IOException e) {
+            return null;
+        }
+    }
 }

app/src/main/java/fr/free/nrw/commons/repository/UploadRepository.java

@@ -262,4 +262,14 @@ public String getValue(String key, String value) {
     public void setSelectedLicense(String licenseName) {
         localDataSource.setSelectedLicense(licenseName);
     }
+
+    /**
+     * Returns nearest place matching the passed latitude and longitude
+     * @param decLatitude
+     * @param decLongitude
+     * @return
+     */
+    public Place checkNearbyPlaces(double decLatitude, double decLongitude) {
+        return remoteDataSource.getNearbyPlaces(decLatitude, decLongitude);
+    }
 }

app/src/main/java/fr/free/nrw/commons/upload/mediaDetails/UploadMediaDetailFragment.java

@@ -1,5 +1,6 @@
 package fr.free.nrw.commons.upload.mediaDetails;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.os.Bundle;
 import android.text.TextUtils;
@@ -25,6 +26,7 @@
 import org.apache.commons.lang3.StringUtils;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Locale;
 
@@ -297,6 +299,32 @@ public void onImageProcessed(UploadItem uploadItem, Place place) {
         setDescriptionsInAdapter(descriptions);
     }
 
+    /**
+     * Shows popup if any nearby location needing pictures matches uploadable picture's GPS location
+     * @param uploadItem
+     * @param place
+     */
+    @SuppressLint("StringFormatInvalid")
+    @Override
+    public void onNearbyPlaceFound(UploadItem uploadItem, Place place) {
+        DialogUtil.showAlertDialog(getActivity(),
+                getString(R.string.upload_nearby_place_found_title),
+                String.format(Locale.getDefault(),
+                        getString(R.string.upload_nearby_place_found_description),
+                        place.getName()),
+                () -> {
+
+                },
+                () -> {
+                    etTitle.setText(place.getName());
+                    Description description = new Description();
+                    description.setLanguageCode("en");
+                    description.setDescriptionText(place.getLongDescription());
+                    descriptions = Arrays.asList(description);
+                    setDescriptionsInAdapter(descriptions);
+                });
+    }
+
     @Override
     public void showProgress(boolean shouldShow) {
         callback.showProgress(shouldShow);

app/src/main/java/fr/free/nrw/commons/upload/mediaDetails/UploadMediaDetailsContract.java

@@ -19,6 +19,8 @@ interface View extends SimilarImageInterface {
 
         void onImageProcessed(UploadItem uploadItem, Place place);
 
+        void onNearbyPlaceFound(UploadItem uploadItem, Place place);
+
         void showProgress(boolean shouldShow);
 
         void onImageValidationSuccess();

app/src/main/java/fr/free/nrw/commons/upload/mediaDetails/UploadMediaPresenter.java

@@ -14,6 +14,7 @@
 import fr.free.nrw.commons.upload.UploadModel.UploadItem;
 import fr.free.nrw.commons.upload.mediaDetails.UploadMediaDetailsContract.UserActionListener;
 import fr.free.nrw.commons.upload.mediaDetails.UploadMediaDetailsContract.View;
+import io.reactivex.Observable;
 import io.reactivex.Scheduler;
 import io.reactivex.disposables.CompositeDisposable;
 import io.reactivex.disposables.Disposable;
@@ -81,13 +82,31 @@ public void receiveImage(UploadableFile uploadableFile, String source, Place pla
                         {
                             view.onImageProcessed(uploadItem, place);
                             GPSExtractor gpsCoords = uploadItem.getGpsCoords();
-                            view.showMapWithImageCoordinates((gpsCoords != null && gpsCoords.imageCoordsExists) ? true : false);
+                            view.showMapWithImageCoordinates(gpsCoords != null && gpsCoords.imageCoordsExists);
                             view.showProgress(false);
+                            if (gpsCoords != null && gpsCoords.imageCoordsExists) {
+                                checkNearbyPlaces(uploadItem);
+                            }
                         },
                         throwable -> Timber.e(throwable, "Error occurred in processing images"));
         compositeDisposable.add(uploadItemDisposable);
     }
 
+    /**
+     * This method checks for the nearest location that needs images and suggests it to the user.
+     * @param uploadItem
+     */
+    private void checkNearbyPlaces(UploadItem uploadItem) {
+        Disposable checkNearbyPlaces = Observable.fromCallable(() -> repository
+                .checkNearbyPlaces(uploadItem.getGpsCoords().getDecLatitude(),
+                        uploadItem.getGpsCoords().getDecLongitude()))
+                .subscribeOn(ioScheduler)
+                .observeOn(mainThreadScheduler)
+                .subscribe(place -> view.onNearbyPlaceFound(uploadItem, place),
+                        throwable -> Timber.e(throwable, "Error occurred in processing images"));
+        compositeDisposable.add(checkNearbyPlaces);
+    }
+
     /**
      * asks the repository to verify image quality
      *

app/src/main/res/values/strings.xml

@@ -588,4 +588,7 @@ Upload your first media by tapping on the add button.</string>
   <string name="place_type">Place type:</string>
   <string name="nearby_search_hint">Bridge, museum, hotel etc.</string>
   <string name="you_must_reset_your_passsword">Something went wrong with login, you must reset your password !!</string>
+
+  <string name="upload_nearby_place_found_title">Nearby Place Found</string>
+  <string name="upload_nearby_place_found_description">Is this a photo of Place %1$s?</string>
 </resources>