/*
 * Copyright 2016 The Netty Project
 *
 * The Netty 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 io.netty.testsuite.transport.socket;

import io.netty.bootstrap.Bootstrap;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.testsuite.util.TestUtils;
import io.netty.util.NetUtil;
import io.netty.util.concurrent.ImmediateEventExecutor;
import io.netty.util.concurrent.Promise;
import org.junit.Test;

import java.net.InetSocketAddress;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;

import static org.junit.Assert.*;

public class SocketConnectTest extends AbstractSocketTest {

    @Test(timeout = 30000)
    public void testLocalAddressAfterConnect() throws Throwable {
        run();
    }

    public void testLocalAddressAfterConnect(ServerBootstrap sb, Bootstrap cb) throws Throwable {
        Channel serverChannel = null;
        Channel clientChannel = null;
        try {
            final Promise<InetSocketAddress> localAddressPromise = ImmediateEventExecutor.INSTANCE.newPromise();
            serverChannel = sb.childHandler(new ChannelInboundHandlerAdapter() {
                        @Override
                        public void channelActive(ChannelHandlerContext ctx) throws Exception {
                            localAddressPromise.setSuccess((InetSocketAddress) ctx.channel().localAddress());
                        }
                    }).bind().syncUninterruptibly().channel();

            clientChannel = cb.handler(new ChannelInboundHandlerAdapter()).register().syncUninterruptibly().channel();

            assertNull(clientChannel.localAddress());
            assertNull(clientChannel.remoteAddress());

            clientChannel.connect(serverChannel.localAddress()).syncUninterruptibly().channel();
            assertLocalAddress((InetSocketAddress) clientChannel.localAddress());
            assertNotNull(clientChannel.remoteAddress());

            assertLocalAddress(localAddressPromise.get());
        } finally {
            if (clientChannel != null) {
                clientChannel.close().syncUninterruptibly();
            }
            if (serverChannel != null) {
                serverChannel.close().syncUninterruptibly();
            }
        }
    }

    @Test(timeout = 3000)
    public void testChannelEventsFiredWhenClosedDirectly() throws Throwable {
        run();
    }

    public void testChannelEventsFiredWhenClosedDirectly(ServerBootstrap sb, Bootstrap cb) throws Throwable {
        final BlockingQueue<Integer> events = new LinkedBlockingQueue<Integer>();

        Channel sc = null;
        Channel cc = null;
        try {
            sb.childHandler(new ChannelInboundHandlerAdapter());
            sc = sb.bind().syncUninterruptibly().channel();

            cb.handler(new ChannelInboundHandlerAdapter() {
                @Override
                public void channelActive(ChannelHandlerContext ctx) throws Exception {
                    events.add(0);
                }

                @Override
                public void channelInactive(ChannelHandlerContext ctx) throws Exception {
                    events.add(1);
                }
            });
            // Connect and directly close again.
            cc = cb.connect(sc.localAddress()).addListener(ChannelFutureListener.CLOSE).
                    syncUninterruptibly().channel();
            assertEquals(0, events.take().intValue());
            assertEquals(1, events.take().intValue());
        } finally {
            if (cc != null) {
                cc.close();
            }
            if (sc != null) {
                sc.close();
            }
        }
    }

    private static void assertLocalAddress(InetSocketAddress address) {
        assertTrue(address.getPort() > 0);
        assertFalse(address.getAddress().isAnyLocalAddress());
    }
}
