/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 *
 *      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 org.ext.uberfire.social.activities.client.user;

import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Instance;
import javax.inject.Inject;

import com.google.gwt.user.client.ui.Image;
import org.ext.uberfire.social.activities.client.gravatar.GravatarBuilder;
import org.ext.uberfire.social.activities.model.SocialUser;
import org.ext.uberfire.social.activities.service.SocialUserImageRepositoryAPI;
import org.ext.uberfire.social.activities.service.SocialUserImageRepositoryAPI.ImageSize;

@ApplicationScoped
public class SocialUserImageProviderImpl implements SocialUserImageProvider {

    @Inject
    Instance<SocialUserImageRepositoryAPI> imageRepository;

    @Override
    public Image getImageForSocialUser(final SocialUser socialUser,
                                       final ImageSize imageSize) {
        if (imageRepository.isUnsatisfied()) {
            return createDefaultImage(socialUser,
                                      imageSize);
        } else {
            final String url = imageRepository.get().imageUrlForSocialUser(socialUser,
                                                                           imageSize);
            if (url == null) {
                return createDefaultImage(socialUser,
                                          imageSize);
            } else {
                return new Image(url);
            }
        }
    }

    private Image createDefaultImage(final SocialUser socialUser,
                                     final ImageSize imageSize) {
        return GravatarBuilder.generate(socialUser,
                                        imageSize);
    }
}
