/*
 * Licensed to Crate under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.  Crate 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.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial
 * agreement.
 */

package io.crate.protocols.postgres;

import io.crate.test.integration.CrateUnitTest;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.http.BindHttpException;
import org.junit.Test;

import java.net.UnknownHostException;

import static io.crate.protocols.postgres.PostgresNetty.resolvePublishPort;
import static java.net.InetAddress.getByName;
import static java.util.Arrays.asList;
import static org.hamcrest.Matchers.equalTo;

public class PostgresNettyPublishPortTest extends CrateUnitTest {

    @Test
    public void testPSQLPublishPort() throws Exception {
        int boundPort = randomIntBetween(9000, 9100);
        int otherBoundPort = randomIntBetween(9200, 9300);

        int publishPort = resolvePublishPort(asList(address("127.0.0.1", boundPort), address("127.0.0.2", otherBoundPort)), getByName("127.0.0.1"));
        assertThat("Publish port should be derived from matched address", publishPort, equalTo(boundPort));

        publishPort = resolvePublishPort(asList(address("127.0.0.1", boundPort), address("127.0.0.2", boundPort)), getByName("127.0.0.3"));
        assertThat("Publish port should be derived from unique port of bound addresses", publishPort, equalTo(boundPort));

        publishPort = resolvePublishPort(asList(address("0.0.0.0", boundPort), address("127.0.0.2", otherBoundPort)),
            getByName("127.0.0.1"));
        assertThat("Publish port should be derived from matching wildcard address", publishPort, equalTo(boundPort));
    }

    @Test
    public void testNonUniqueBoundAddress() throws Exception {
        int boundPort = randomIntBetween(9000, 9100);
        int otherBoundPort = randomIntBetween(9200, 9300);

        expectedException.expect(BindHttpException.class);
        expectedException.expectMessage("Failed to auto-resolve psql publish port, multiple bound addresses");
        resolvePublishPort(asList(address("127.0.0.1", boundPort), address("127.0.0.2", otherBoundPort)),
            getByName("127.0.0.3"));
    }

    private InetSocketTransportAddress address(String host, int port) throws UnknownHostException {
        return new InetSocketTransportAddress(getByName(host), port);
    }
}