/*
 * Copyright (c) 2006-2017 DMDirc Developers
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.dmdirc.addons.channelwho;

import com.dmdirc.config.ConfigBinder;
import com.dmdirc.events.ChannelUserAwayEvent;
import com.dmdirc.events.DisplayProperty;
import com.dmdirc.events.ServerNumericEvent;
import com.dmdirc.interfaces.Connection;
import com.dmdirc.interfaces.ConnectionManager;
import com.dmdirc.events.eventbus.EventBus;
import com.dmdirc.interfaces.GroupChat;
import com.dmdirc.interfaces.GroupChatManager;
import com.dmdirc.interfaces.GroupChatUser;
import com.dmdirc.interfaces.User;
import com.dmdirc.interfaces.WindowModel;
import com.dmdirc.interfaces.config.AggregateConfigProvider;

import com.google.common.collect.Lists;

import java.util.Optional;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentCaptor;
import org.mockito.Captor;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;

import static org.junit.Assert.assertEquals;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyLong;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

@RunWith(MockitoJUnitRunner.class)
public class ConnectionHandlerTest {

    @Mock private AggregateConfigProvider config;
    @Mock private ConfigBinder configBinder;
    @Mock private WindowModel windowModel;
    @Mock private EventBus eventBus;
    @Mock private ScheduledExecutorService scheduledExecutorService;
    @Mock private ScheduledFuture<?> scheduledFuture;
    @Mock private ConnectionManager connectionManager;
    @Mock private Connection connection;
    @Mock private GroupChat groupChat;
    @Mock private GroupChatUser groupChatUser;
    @Mock private User user;
    @Mock private GroupChatManager groupChatManager;
    @Mock private ServerNumericEvent serverNumericEvent;
    @Mock private ChannelUserAwayEvent channelUserAwayEvent;
    @Captor private ArgumentCaptor<ChannelUserAwayEvent> eventArgumentCaptor;
    private ConnectionHandler instance;

    @Before
    public void setUp() throws Exception {
        doReturn(scheduledFuture).when(scheduledExecutorService)
                .scheduleAtFixedRate(any(Runnable.class), anyLong(), anyLong(), any());
        when(windowModel.getEventBus()).thenReturn(eventBus);
        when(connection.getWindowModel()).thenReturn(windowModel);
        when(config.getBinder()).thenReturn(configBinder);
        when(connectionManager.getConnections()).thenReturn(Lists.newArrayList(connection));
        when(connection.getGroupChatManager()).thenReturn(groupChatManager);
        when(groupChatManager.getChannels()).thenReturn(Lists.newArrayList(groupChat));
        when(groupChat.getWindowModel()).thenReturn(windowModel);
        when(groupChat.getConnection()).thenReturn(Optional.of(connection));
        when(configBinder.withDefaultDomain("domain")).thenReturn(configBinder);
        when(windowModel.getConfigManager()).thenReturn(config);
        when(groupChatUser.getNickname()).thenReturn("nickname");
        when(channelUserAwayEvent.getUser()).thenReturn(groupChatUser);
        when(channelUserAwayEvent.getChannel()).thenReturn(groupChat);
        when(groupChatUser.getUser()).thenReturn(user);
        instance = new ConnectionHandler(config, scheduledExecutorService, eventBus,
            "domain", connection);
        instance.handleWhoInterval(5);

        when(serverNumericEvent.getConnection()).thenReturn(connection);
        when(channelUserAwayEvent.getChannel()).thenReturn(groupChat);
    }

    @Test
    public void testLoad() throws Exception {
        instance.load();
        verify(configBinder).bind(instance, ConnectionHandler.class);
        verify(eventBus).subscribe(instance);
        verify(scheduledExecutorService).scheduleAtFixedRate(any(Runnable.class), eq(5L), eq(5L),
                eq(TimeUnit.MILLISECONDS));
    }

    @Test
    public void testUnload() throws Exception {
        instance.unload();
        verify(configBinder).unbind(instance);
        verify(scheduledExecutorService).shutdown();
        verify(eventBus).unsubscribe(instance);
    }

    @Test
    public void testHandleWhoInterval() throws Exception {
        instance.handleWhoInterval(10);
        verify(scheduledFuture).cancel(false);
        verify(scheduledExecutorService).scheduleAtFixedRate(any(Runnable.class), eq(5L), eq(5L),
                eq(TimeUnit.MILLISECONDS));
        verify(scheduledExecutorService).scheduleAtFixedRate(any(Runnable.class), eq(10L), eq(10L),
                eq(TimeUnit.MILLISECONDS));
    }

    @Test
    public void testCheckWho_True() throws Exception {
        when(config.getOptionBool("domain", "sendwho")).thenReturn(true);
        instance.checkWho();
        verify(config).getOptionBool("domain", "sendwho");
        verify(groupChat).requestUsersInfo();
    }

    @Test
    public void testCheckWho_False() throws Exception {
        when(config.getOptionBool("domain", "sendwho")).thenReturn(false);
        instance.checkWho();
        verify(config).getOptionBool("domain", "sendwho");
        verify(groupChat, never()).requestUsersInfo();
    }

    @Test
    public void testHandleAwayEvent_WithReason() throws Exception {
        when(channelUserAwayEvent.getReason()).thenReturn(Optional.of("reason"));
        instance.load();
        instance.handleAwayEvent(channelUserAwayEvent);
        verify(channelUserAwayEvent, never())
                .setDisplayProperty(DisplayProperty.DO_NOT_DISPLAY, true);
        verify(connection, never()).requestUserInfo(any());
    }

    @Test
    public void testHandleAwayEvent_WithoutReason() throws Exception {
        when(channelUserAwayEvent.getReason()).thenReturn(Optional.empty());
        instance.load();
        instance.handleAwayEvent(channelUserAwayEvent);
        verify(channelUserAwayEvent).setDisplayProperty(DisplayProperty.DO_NOT_DISPLAY, true);
        verify(connection).requestUserInfo(any());
    }

    @Test
    public void testHandleServerNumericEvent_301() throws Exception {
        when(serverNumericEvent.getNumeric()).thenReturn(301);
        when(serverNumericEvent.getArgs()).thenReturn(
                new String[]{"", "", "", "nickname", "reason"});
        instance.load();
        when(channelUserAwayEvent.getReason()).thenReturn(Optional.empty());
        when(groupChatUser.getGroupChat()).thenReturn(groupChat);
        instance.handleAwayEvent(channelUserAwayEvent);
        instance.handleServerNumericEvent(serverNumericEvent);
        verify(eventBus).publishAsync(eventArgumentCaptor.capture());
        assertEquals("nickname", eventArgumentCaptor.getValue().getUser().getNickname());
        assertEquals("reason", eventArgumentCaptor.getValue().getReason().get());
    }

    @Test
    public void testHandleServerNumericEvent_101() throws Exception {
        when(serverNumericEvent.getNumeric()).thenReturn(101);
        when(channelUserAwayEvent.getReason()).thenReturn(Optional.empty());
        instance.load();
        instance.handleAwayEvent(channelUserAwayEvent);
        instance.handleServerNumericEvent(serverNumericEvent);
        verify(serverNumericEvent, never()).getArgs();
        verify(eventBus, never()).publishAsync(any());
    }
}