package net.minecraft.command;

import java.util.Collections;
import java.util.List;
import javax.annotation.Nullable;
import net.minecraft.server.MinecraftServer;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.WorldServer;

public class CommandTime extends CommandBase
{
    /**
     * Gets the name of the command
     */
    public String getName()
    {
        return "time";
    }

    /**
     * Return the required permission level for this command.
     */
    public int getRequiredPermissionLevel()
    {
        return 2;
    }

    /**
     * Gets the usage string for the command.
     */
    public String getUsage(ICommandSender sender)
    {
        return "commands.time.usage";
    }

    /**
     * Callback for when the command is executed
     */
    public void execute(MinecraftServer server, ICommandSender sender, String[] args) throws CommandException
    {
        if (args.length > 1)
        {
            if ("set".equals(args[0]))
            {
                int i1;

                if ("day".equals(args[1]))
                {
                    i1 = 1000;
                }
                else if ("night".equals(args[1]))
                {
                    i1 = 13000;
                }
                else
                {
                    i1 = parseInt(args[1], 0);
                }

                this.setAllWorldTimes(server, i1);
                notifyCommandListener(sender, this, "commands.time.set", new Object[] {i1});
                return;
            }

            if ("add".equals(args[0]))
            {
                int l = parseInt(args[1], 0);
                this.incrementAllWorldTimes(server, l);
                notifyCommandListener(sender, this, "commands.time.added", new Object[] {l});
                return;
            }

            if ("query".equals(args[0]))
            {
                if ("daytime".equals(args[1]))
                {
                    int k = (int)(sender.getEntityWorld().getWorldTime() % 24000L);
                    sender.setCommandStat(CommandResultStats.Type.QUERY_RESULT, k);
                    notifyCommandListener(sender, this, "commands.time.query", new Object[] {k});
                    return;
                }

                if ("day".equals(args[1]))
                {
                    int j = (int)(sender.getEntityWorld().getWorldTime() / 24000L % 2147483647L);
                    sender.setCommandStat(CommandResultStats.Type.QUERY_RESULT, j);
                    notifyCommandListener(sender, this, "commands.time.query", new Object[] {j});
                    return;
                }

                if ("gametime".equals(args[1]))
                {
                    int i = (int)(sender.getEntityWorld().getTotalWorldTime() % 2147483647L);
                    sender.setCommandStat(CommandResultStats.Type.QUERY_RESULT, i);
                    notifyCommandListener(sender, this, "commands.time.query", new Object[] {i});
                    return;
                }
            }
        }

        throw new WrongUsageException("commands.time.usage", new Object[0]);
    }

    /**
     * Get a list of options for when the user presses the TAB key
     */
    public List<String> getTabCompletions(MinecraftServer server, ICommandSender sender, String[] args, @Nullable BlockPos targetPos)
    {
        if (args.length == 1)
        {
            return getListOfStringsMatchingLastWord(args, new String[] {"set", "add", "query"});
        }
        else if (args.length == 2 && "set".equals(args[0]))
        {
            return getListOfStringsMatchingLastWord(args, new String[] {"day", "night"});
        }
        else
        {
            return args.length == 2 && "query".equals(args[0]) ? getListOfStringsMatchingLastWord(args, new String[] {"daytime", "gametime", "day"}) : Collections.emptyList();
        }
    }

    protected void setAllWorldTimes(MinecraftServer server, int time)
    {
        for (int i = 0; i < server.worlds.length; ++i)
        {
            server.worlds[i].setWorldTime((long)time);
        }
    }

    protected void incrementAllWorldTimes(MinecraftServer server, int amount)
    {
        for (int i = 0; i < server.worlds.length; ++i)
        {
            WorldServer worldserver = server.worlds[i];
            worldserver.setWorldTime(worldserver.getWorldTime() + (long)amount);
        }
    }
}