/*
 * Copyright (C) 2013 Square, Inc.
 * Copyright (C) 2016 Simon Vig Therkildsen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.simonvt.cathode.images;

import android.net.Uri;
import com.squareup.picasso.NetworkPolicy;
import java.io.IOException;
import okhttp3.CacheControl;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class ImageDownloader {

  private final OkHttpClient client;

  public ImageDownloader(OkHttpClient client) {
    this.client = client;
  }

  public Response load(Uri uri, int networkPolicy) throws IOException {
    CacheControl cacheControl = null;
    if (networkPolicy != 0) {
      if (NetworkPolicy.isOfflineOnly(networkPolicy)) {
        cacheControl = CacheControl.FORCE_CACHE;
      } else {
        CacheControl.Builder builder = new CacheControl.Builder();
        if (!NetworkPolicy.shouldReadFromDiskCache(networkPolicy)) {
          builder.noCache();
        }
        if (!NetworkPolicy.shouldWriteToDiskCache(networkPolicy)) {
          builder.noStore();
        }
        cacheControl = builder.build();
      }
    }

    Request.Builder builder = new Request.Builder().url(uri.toString());
    if (cacheControl != null) {
      builder.cacheControl(cacheControl);
    }

    return client.newCall(builder.build()).execute();
  }
}