FindVideosNextFetchCallback

FindVideosNextFetchCallback.java

private Callback<VideosCollection> findVideosNextFetchCallback = new Callback<VideosCollection>() {
    @Override
    public void onResponse(Call<VideosCollection> call, Response<VideosCollection> response) {
        videosAdapter.removeFooter();
        isLoading = false;

        if (!response.isSuccessful()) {
            int responseCode = response.code();
            switch (responseCode){
                case 504: // 504 Unsatisfiable Request (only-if-cached)
                    break;
                case 400:
                    isLastPage = true;
                    break;
            }
            return;
        }

        VideosCollection videosCollection = response.body();
        if (videosCollection != null) {
            List<Video> videos = videosCollection.getVideos();
            if (videos != null) {
                videosAdapter.addAll(videos);

                if(videos.size() >= PAGE_SIZE){
                    videosAdapter.addFooter();
                } else {
                    isLastPage = true;
                }
            }
        }
    }

    @Override
    public void onFailure(Call<VideosCollection> call, Throwable t) {
        NetworkLogUtility.logFailure(call, t);

        if (!call.isCanceled()){
            if(t instanceof ConnectException || t instanceof UnknownHostException){
                videosAdapter.updateFooter(VideosAdapter.FooterType.ERROR);
            }
        }
    }
};