SubServers-2/SubServers.Sync/src/net/ME1312/SubServers/Sync/SubAPI.java

package net.ME1312.SubServers.Sync;

import net.ME1312.SubServers.Sync.Library.Container;
import net.ME1312.SubServers.Sync.Library.NamedContainer;
import net.ME1312.SubServers.Sync.Library.UniversalFile;
import net.ME1312.SubServers.Sync.Library.Util;
import net.ME1312.SubServers.Sync.Library.Version.Version;
import net.ME1312.SubServers.Sync.Network.SubDataClient;
import net.ME1312.SubServers.Sync.Server.Server;
import net.md_5.bungee.protocol.ProtocolConstants;

import java.util.*;

/**
 * SubAPI Class
 */
public final class SubAPI {
    LinkedList<NamedContainer<Runnable, Runnable>> listeners = new LinkedList<NamedContainer<Runnable, Runnable>>();
    private final SubPlugin plugin;
    private static SubAPI api;

    protected SubAPI(SubPlugin plugin) {
        this.plugin = plugin;
        api = this;
    }

    /**
     * Gets the SubAPI Methods
     *
     * @return SubAPI
     */
    public static SubAPI getInstance() {
        return api;
    }

    /**
     * Gets the SubServers Internals
     *
     * @deprecated Use SubAPI Methods when available
     * @return SubPlugin Internals
     */
    @Deprecated
    public SubPlugin getInternals() {
        return plugin;
    }

    /**
     * Adds a SubAPI Listener
     *
     * @param enable An Event that will be called when SubAPI is ready
     * @param disable An Event that will be called before SubAPI is disabled
     */
    public void addListener(Runnable enable, Runnable disable) {
        listeners.add(new NamedContainer<Runnable, Runnable>(enable, disable));
    }

    /**
     * Gets the SubData Network Manager
     *
     * @return SubData Network Manager
     */
    public SubDataClient getSubDataNetwork() {
        return plugin.subdata;
    }

    /**
     * Gets the Servers (including SubServers)
     *
     * @return Server Map
     */
    public Map<String, Server> getServers() {
        return plugin.servers;
    }

    /**
     * Gets a Server
     *
     * @param name Server name
     * @return a Server
     */
    public Server getServer(String name) {
        if (Util.isNull(name)) throw new NullPointerException();
        return getServers().get(name.toLowerCase());
    }

    /**
     * Gets the current SubServers Lang Channels
     *
     * @return SubServers Lang Channel list
     */
    public Collection<String> getLangChannels() {
        return plugin.lang.get().keySet();
    }

    /**
     * Gets values from the SubServers Lang
     *
     * @param channel Lang Channel
     * @return Lang Value
     */
    public Map<String, String> getLang(String channel) {
        if (Util.isNull(channel)) throw new NullPointerException();
        return new LinkedHashMap<>(plugin.lang.get().get(channel.toLowerCase()));
    }

    /**
     * Gets a value from the SubServers Lang
     *
     * @param channel Lang Channel
     * @param key Key
     * @return Lang Values
     */
    public String getLang(String channel, String key) {
        if (Util.isNull(channel, key)) throw new NullPointerException();
        return getLang(channel).get(key);
    }

    /**
     * Gets the Runtime Directory
     *
     * @return Directory
     */
    public UniversalFile getRuntimeDirectory() {
        return plugin.dir;
    }

    /**
     * Gets the SubServers.Sync Version
     *
     * @return SubServers.Sync Version
     */
    public Version getWrapperVersion() {
        return plugin.version;
    }

    /**
     * Gets the BungeeCord Version
     *
     * @return BungeeCord Version
     */
    public Version getProxyVersion() {
        return new Version(plugin.getVersion());
    }

    /**
     * Get an array of compatible Minecraft Versions
     *
     * @return Minecraft Versions
     */
    public Version[] getGameVersion() {
        if (GAME_VERSION == null) {
            Container<Boolean> valid = new Container<Boolean>(false);
            if (System.getProperty("subservers.minecraft.version", "").length() > 0) {
                return new Version[]{new Version(System.getProperty("subservers.minecraft.version"))};
            } else if (!Util.isException(() -> valid.set(ProtocolConstants.SUPPORTED_VERSIONS != null)) && valid.get()) {
                List<Version> versions = new LinkedList<Version>();
                for (String version : ProtocolConstants.SUPPORTED_VERSIONS) versions.add(new Version(version));
                Collections.sort(versions);
                return versions.toArray(new Version[versions.size()]);
            } else if (!Util.isException(() -> valid.set(plugin.getGameVersion() != null)) && valid.get()) {
                String raw = plugin.getGameVersion();
                if (raw.contains("-") || raw.contains(",")) {
                    List<Version> versions = new LinkedList<Version>();
                    for (String version : raw.split("(?:\\s*-|,)\\s*")) versions.add(new Version(version));
                    Collections.sort(versions);
                    return versions.toArray(new Version[versions.size()]);
                } else {
                    return new Version[]{new Version(plugin.getGameVersion())};
                }
            } else {
                plugin.getLogger().warning("Could not determine compatible Minecraft version(s); Now using 1.x.x as a placeholder.");
                plugin.getLogger().warning("Use this launch argument to specify a compatible Minecraft version: -Dsubservers.minecraft.version=1.x.x");
                return new Version[]{new Version("1.x.x")};
            }
        } else return GAME_VERSION;
    }
    private Version[] GAME_VERSION = getGameVersion();
}