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app/src/main/java/eu/kanade/mangafeed/data/helpers/NetworkHelper.java

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+package eu.kanade.mangafeed.data.helpers;
+
+
+import com.squareup.okhttp.CacheControl;
+import com.squareup.okhttp.Headers;
+import com.squareup.okhttp.OkHttpClient;
+import com.squareup.okhttp.Request;
+import com.squareup.okhttp.Response;
+
+import java.io.IOException;
+
+import rx.Observable;
+import rx.Subscriber;
+import timber.log.Timber;
+
+public final class NetworkHelper {
+
+    private OkHttpClient mClient;
+
+    public final CacheControl NULL_CACHE_CONTROL = new CacheControl.Builder().noCache().build();
+    public final Headers NULL_HEADERS = new Headers.Builder().build();
+
+    public NetworkHelper() {
+        mClient = new OkHttpClient();
+    }
+
+    public Observable<Response> getResponse(final String url, final CacheControl cacheControl, final Headers headers) {
+        return Observable.create(subscriber -> {
+            try {
+                if (!subscriber.isUnsubscribed()) {
+                    Request request = new Request.Builder()
+                            .url(url)
+                            .cacheControl(cacheControl != null ? cacheControl : NULL_CACHE_CONTROL)
+                            .headers(headers != null ? headers : NULL_HEADERS)
+                            .build();
+                    subscriber.onNext(mClient.newCall(request).execute());
+                }
+                subscriber.onCompleted();
+            } catch (Throwable e) {
+                subscriber.onError(e);
+            }
+        });
+    }
+
+    public Observable<String> mapResponseToString(final Response response) {
+        return Observable.create(subscriber -> {
+            try {
+                subscriber.onNext(response.body().string());
+                subscriber.onCompleted();
+            } catch (Throwable e) {
+                subscriber.onError(e);
+            }
+        });
+    }
+
+    public Observable<String> getStringResponse(final String url, final CacheControl cacheControl, final Headers headers) {
+
+        return getResponse(url, cacheControl, headers)
+                .flatMap(this::mapResponseToString);
+    }
+
+}