Added retrofit and fetching photos by ref using retrofit (without

tests).

googleutils/build.gradle

@@ -32,4 +32,6 @@ dependencies {
 
     compile 'com.googlecode.android-query:android-query:0.25.9'
     compile project(path: ':urbanexplorerutils')
+    compile 'com.squareup.retrofit2:retrofit:2.1.0'
+    compile 'com.squareup.retrofit2:converter-gson:2.1.0'
 }

googleutils/proguard-rules.pro

@@ -15,3 +15,16 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
+
+# Proguard rules for retrofit
+
+# Platform calls Class.forName on types which do not exist on Android to determine platform.
+-dontnote retrofit2.Platform
+# Platform used when running on RoboVM on iOS. Will not be used at runtime.
+-dontnote retrofit2.Platform$IOS$MainThreadExecutor
+# Platform used when running on Java 8 VMs. Will not be used at runtime.
+-dontwarn retrofit2.Platform$Java8
+# Retain generic type information for use by reflection by converters and adapters.
+-keepattributes Signature
+# Retain declared checked exceptions for use by a Proxy instance.
+-keepattributes Exceptions

googleutils/src/main/java/pl/tpolgrabia/googleutils/GooglePlacesService.java

@@ -0,0 +1,22 @@
+package pl.tpolgrabia.googleutils;
+
+import pl.tpolgrabia.googleutils.dto.GooglePlacePhotoRefResult;
+import pl.tpolgrabia.googleutils.dto.GooglePlaceResult;
+import retrofit2.Call;
+import retrofit2.http.GET;
+import retrofit2.http.Path;
+
+import java.util.List;
+
+/**
+ * Created by tpolgrabia on 02.10.16.
+ */
+public interface GooglePlacesService {
+    @GET("photo?maxwidth={maxWidth}" +
+        "&photoreference={photoRef}" +
+        "&key={apiKey}")
+    Call<List<GooglePlacePhotoRefResult>> fetchPhotosByRef(
+        @Path("maxWidth") Long maxWidth,
+        @Path("photoRef") String photoRef,
+        @Path("apiKey") String apiKey);
+}

googleutils/src/main/java/pl/tpolgrabia/googleutils/callback/GooglePlacesPhotosCallback.java

@@ -0,0 +1,14 @@
+package pl.tpolgrabia.googleutils.callback;
+
+import pl.tpolgrabia.googleutils.dto.GooglePlacePhotoRefResult;
+import pl.tpolgrabia.googleutils.dto.GooglePlaceResult;
+
+import java.util.List;
+
+/**
+ * Created by tpolgrabia on 02.10.16.
+ */
+public interface GooglePlacesPhotosCallback {
+    void onResponse(int code, String message, List<GooglePlacePhotoRefResult> body);
+    void onFailure(Throwable t);
+}

googleutils/src/main/java/pl/tpolgrabia/googleutils/constants/GooglePlacesConstants.java

@@ -0,0 +1,9 @@
+package pl.tpolgrabia.googleutils.constants;
+
+/**
+ * Created by tpolgrabia on 02.10.16.
+ */
+public class GooglePlacesConstants {
+    public static final String GOOGLE_PLACES_BASEURL = "https://maps.googleapis.com/maps/api/place";
+    public static final Long PHOTO_MAX_WIDTH = 512L;
+}

googleutils/src/main/java/pl/tpolgrabia/googleutils/dto/GooglePlacePhotoRefResult.java

@@ -0,0 +1,59 @@
+package pl.tpolgrabia.googleutils.dto;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.util.List;
+
+/**
+ * Created by tpolgrabia on 02.10.16.
+ */
+public class GooglePlacePhotoRefResult {
+    @SerializedName("htmlAttributions")
+    private List<String> htmlAttributions;
+    private Long width;
+    private Long height;
+    @SerializedName("photoReference")
+    private String photoReference;
+
+    public List<String> getHtmlAttributions() {
+        return htmlAttributions;
+    }
+
+    public void setHtmlAttributions(List<String> htmlAttributions) {
+        this.htmlAttributions = htmlAttributions;
+    }
+
+    public Long getWidth() {
+        return width;
+    }
+
+    public void setWidth(Long width) {
+        this.width = width;
+    }
+
+    public Long getHeight() {
+        return height;
+    }
+
+    public void setHeight(Long height) {
+        this.height = height;
+    }
+
+    public String getPhotoReference() {
+        return photoReference;
+    }
+
+    public void setPhotoReference(String photoReference) {
+        this.photoReference = photoReference;
+    }
+
+    @Override
+    public String toString() {
+        return "GooglePlacePhotoRefResult{" +
+            "htmlAttributions=" + htmlAttributions +
+            ", width=" + width +
+            ", height=" + height +
+            ", photoReference='" + photoReference + '\'' +
+            '}';
+    }
+}

googleutils/src/main/java/pl/tpolgrabia/googleutils/utils/PlacesUtils.java

@@ -4,15 +4,26 @@ import android.content.Context;
 import com.androidquery.AQuery;
 import com.androidquery.callback.AjaxCallback;
 import com.androidquery.callback.AjaxStatus;
-import com.google.gson.JsonObject;
+import org.apache.http.HttpStatus;
 import org.json.JSONObject;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import pl.tpolgrabia.googleutils.GooglePlacesService;
+import pl.tpolgrabia.googleutils.callback.GooglePlacesPhotosCallback;
 import pl.tpolgrabia.googleutils.callback.PlacesCallback;
+import pl.tpolgrabia.googleutils.constants.GooglePlacesConstants;
 import pl.tpolgrabia.googleutils.converter.GooglePlaceConverter;
+import pl.tpolgrabia.googleutils.dto.GooglePlacePhoto;
+import pl.tpolgrabia.googleutils.dto.GooglePlacePhotoRefResult;
 import pl.tpolgrabia.googleutils.dto.GooglePlaceResult;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import retrofit2.Retrofit;
+import retrofit2.converter.gson.GsonConverterFactory;
 
-import java.util.List;
+import java.io.IOException;
+import java.util.*;
 
 /**
  * Created by tpolgrabia on 27.09.16.
@@ -97,4 +108,44 @@ public class PlacesUtils {
                 }
             });
     }
+
+    public List<GooglePlacePhotoRefResult> fetchPhotosByRefSync(String photosRef) throws IOException {
+        Response<List<GooglePlacePhotoRefResult>> results = fetchPhotosByRefInvocation(photosRef).execute();
+        return results.code() == HttpStatus.SC_OK ? results.body() : null;
+    }
+
+    public void fetchPhotosByRefAsync(String photosRef, final GooglePlacesPhotosCallback clbk) {
+        fetchPhotosByRefInvocation(photosRef).enqueue(new Callback<List<GooglePlacePhotoRefResult>>() {
+            @Override
+            public void onResponse(Call<List<GooglePlacePhotoRefResult>> call, Response<List<GooglePlacePhotoRefResult>> response) {
+                clbk.onResponse(response.code(), response.message(), response.body());
+            }
+
+            @Override
+            public void onFailure(Call<List<GooglePlacePhotoRefResult>> call, Throwable t) {
+                clbk.onFailure(t);
+            }
+        });
+    }
+
+    private Call<List<GooglePlacePhotoRefResult>> fetchPhotosByRefInvocation(String photosRef) {
+        Retrofit retrofit = new Retrofit.Builder()
+            .baseUrl(GooglePlacesConstants.GOOGLE_PLACES_BASEURL)
+            .addConverterFactory(GsonConverterFactory.create())
+            .build();
+        GooglePlacesService service = retrofit.create(GooglePlacesService.class);
+        return service.fetchPhotosByRef(
+            GooglePlacesConstants.PHOTO_MAX_WIDTH,
+            photosRef,
+            apiKey);
+    }
+
+    public Map<String, List<GooglePlacePhotoRefResult>> fetchPhotosSync(Set<String> photoRefs) throws IOException {
+        HashMap<String, List<GooglePlacePhotoRefResult>> result = new HashMap<String, List<GooglePlacePhotoRefResult>>();
+        for (String photoRef : photoRefs) {
+            result.put(photoRef, fetchPhotosByRefSync(photoRef));
+        }
+
+        return result;
+    }
 }