/*
 * Copyright 2014-2017 Groupon, Inc
 * Copyright 2014-2017 The Billing Project, LLC
 *
 * The Billing Project licenses this file to you 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 org.killbill.billing.util.cache;

// import java.util.List;

// import javax.inject.Inject;
// import javax.inject.Singleton;

// import org.killbill.billing.callcontext.InternalTenantContext;
// import org.killbill.billing.catalog.api.Catalog;
// import org.killbill.billing.catalog.api.CatalogApiException;
// import org.killbill.billing.tenant.api.TenantInternalApi;
// import org.killbill.billing.util.cache.Cachable.CacheType;
// import org.slf4j.Logger;
// import org.slf4j.LoggerFactory;

// @Singleton
// public class TenantCatalogCacheLoader extends BaseCacheLoader<Long, Catalog> {

//     private final Logger log = LoggerFactory.getLogger(TenantCatalogCacheLoader.class);

//     private final TenantInternalApi tenantApi;

//     @Inject
//     public TenantCatalogCacheLoader(final TenantInternalApi tenantApi) {
//         super();
//         this.tenantApi = tenantApi;
//     }

//     @Override
//     public CacheType getCacheType() {
//         return CacheType.TENANT_CATALOG;
//     }

//     @Override
//     public Catalog compute(final Long key, final CacheLoaderArgument cacheLoaderArgument) {
//         final Long tenantRecordId = key;
//         final InternalTenantContext internalTenantContext = new InternalTenantContext(tenantRecordId);

//         if (cacheLoaderArgument.getArgs() == null || !(cacheLoaderArgument.getArgs()[0] instanceof LoaderCallback)) {
//             throw new IllegalArgumentException("Missing LoaderCallback from the arguments ");
//         }

//         final LoaderCallback callback = (LoaderCallback) cacheLoaderArgument.getArgs()[0];
//         final List<String> catalogXMLs = tenantApi.getTenantCatalogs(internalTenantContext);
//         if (catalogXMLs.isEmpty()) {
//             return null;
//         }
//         try {
//             log.info("Loading catalog cache for tenantRecordId='{}'", internalTenantContext.getTenantRecordId());
//             return callback.loadCatalog(catalogXMLs, tenantRecordId);
//         } catch (final CatalogApiException e) {
//             throw new IllegalStateException(String.format("Failed to de-serialize catalog for tenantRecordId='%s'", internalTenantContext.getTenantRecordId()), e);
//         }
//     }

//     public interface LoaderCallback {

//         public Catalog loadCatalog(final List<String> catalogXMLs, final Long tenantRecordId) throws CatalogApiException;
//     }
// }
