/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds 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.jclouds.ec2.services;

import static org.jclouds.ec2.options.DescribeAvailabilityZonesOptions.Builder.availabilityZones;
import static org.jclouds.ec2.options.DescribeRegionsOptions.Builder.regions;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotNull;

import java.net.URI;
import java.util.Iterator;
import java.util.Properties;
import java.util.Set;
import java.util.SortedMap;
import java.util.Map.Entry;

import org.jclouds.aws.domain.Region;
import org.jclouds.compute.BaseVersionedServiceLiveTest;
import org.jclouds.compute.ComputeServiceContextFactory;
import org.jclouds.ec2.EC2AsyncClient;
import org.jclouds.ec2.EC2Client;
import org.jclouds.ec2.domain.AvailabilityZoneInfo;
import org.jclouds.logging.log4j.config.Log4JLoggingModule;
import org.jclouds.rest.RestContext;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeGroups;
import org.testng.annotations.Test;

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.inject.Module;

/**
 * Tests behavior of {@code AvailabilityZoneAndRegionClient}
 * 
 * @author Adrian Cole
 */
@Test(groups = "live", singleThreaded = true, testName = "AvailabilityZoneAndRegionClientLiveTest")
public class AvailabilityZoneAndRegionClientLiveTest extends BaseVersionedServiceLiveTest {
   public AvailabilityZoneAndRegionClientLiveTest() {
      provider = "ec2";
   }
   
   private AvailabilityZoneAndRegionClient client;
   private RestContext<EC2Client, EC2AsyncClient> context;

   @BeforeGroups(groups = { "live" })
   public void setupClient() {
      setupCredentials();
      Properties overrides = setupProperties();
      context = new ComputeServiceContextFactory().createContext(provider,
            ImmutableSet.<Module> of(new Log4JLoggingModule()), overrides).getProviderSpecificContext();
      client = context.getApi().getAvailabilityZoneAndRegionServices();
   }

   public void testDescribeAvailabilityZones() {
      for (String region : Lists.newArrayList(null, Region.EU_WEST_1, Region.US_EAST_1, Region.US_WEST_1,
            Region.AP_SOUTHEAST_1)) {
         Set<AvailabilityZoneInfo> allResults = client.describeAvailabilityZonesInRegion(region);
         assertNotNull(allResults);
         assert allResults.size() >= 2 : allResults.size();
         Iterator<AvailabilityZoneInfo> iterator = allResults.iterator();
         String id1 = iterator.next().getZone();
         String id2 = iterator.next().getZone();
         Set<AvailabilityZoneInfo> twoResults = client.describeAvailabilityZonesInRegion(region,
               availabilityZones(id1, id2));
         assertNotNull(twoResults);
         assertEquals(twoResults.size(), 2);
         iterator = allResults.iterator();
         assertEquals(iterator.next().getZone(), id1);
         assertEquals(iterator.next().getZone(), id2);
      }
   }

   public void testDescribeRegions() {
      SortedMap<String, URI> allResults = Maps.newTreeMap();
      allResults.putAll(client.describeRegions());
      assertNotNull(allResults);
      assert allResults.size() >= 2 : allResults.size();
      Iterator<Entry<String, URI>> iterator = allResults.entrySet().iterator();
      String r1 = iterator.next().getKey();
      String r2 = iterator.next().getKey();
      SortedMap<String, URI> twoResults = Maps.newTreeMap();
      twoResults.putAll(client.describeRegions(regions(r1, r2)));
      assertNotNull(twoResults);
      assertEquals(twoResults.size(), 2);
      iterator = twoResults.entrySet().iterator();
      assertEquals(iterator.next().getKey(), r1);
      assertEquals(iterator.next().getKey(), r2);
   }

   @AfterTest
   public void shutdown() {
      context.close();
   }
}
