001package co.aikar.commands;
002
003import java.util.ArrayList;
004import java.util.Collection;
005import java.util.Collections;
006import java.util.List;
007import java.util.Optional;
008import java.util.stream.Collectors;
009
010import com.velocitypowered.api.command.CommandSource;
011import com.velocitypowered.api.proxy.Player;
012import com.velocitypowered.api.proxy.ProxyServer;
013
014import net.kyori.text.TextComponent;
015import net.kyori.text.serializer.ComponentSerializers;
016
017public class ACFVelocityUtil {
018
019    @SuppressWarnings("deprecation")
020    public static TextComponent color(String message) {
021        return ComponentSerializers.LEGACY.deserialize(message);
022    }
023
024    public static Player findPlayerSmart(ProxyServer server, CommandIssuer issuer, String search) {
025        CommandSource requester = issuer.getIssuer();
026        String name = ACFUtil.replace(search, ":confirm", "");
027        if (name.length() < 3) {
028            issuer.sendError(MinecraftMessageKeys.USERNAME_TOO_SHORT);
029            return null;
030        }
031        if (!isValidName(name)) {
032            issuer.sendError(MinecraftMessageKeys.IS_NOT_A_VALID_NAME, "{name}", name);
033            return null;
034        }
035
036        List<Player> matches = new ArrayList<>(matchPlayer(server, name));
037
038        if (matches.size() > 1) {
039            String allMatches = matches.stream().map(Player::getUsername).collect(Collectors.joining(", "));
040            issuer.sendError(MinecraftMessageKeys.MULTIPLE_PLAYERS_MATCH, "{search}", name, "{all}", allMatches);
041            return null;
042        }
043
044        if (matches.isEmpty()) {
045            issuer.sendError(MinecraftMessageKeys.NO_PLAYER_FOUND_SERVER, "{search}", name);
046            return null;
047        }
048
049        return matches.get(0);
050    }
051
052    /*
053     * Original code written by md_5
054     * 
055     * Modified to work with Velocity by Crypnotic
056     */
057    private static Collection<Player> matchPlayer(ProxyServer server, final String partialName) {
058        // A better error message might be nice. This just mimics the previous output
059        if (partialName == null) {
060            throw new NullPointerException("partialName");
061        }
062
063        Optional<Player> exactMatch = server.getPlayer(partialName);
064        //noinspection OptionalIsPresent
065        if (exactMatch.isPresent()) {
066            return Collections.singleton(exactMatch.get());
067        }
068
069        return server.getAllPlayers().stream()
070                .filter(player -> player.getUsername().regionMatches(true, 0, partialName, 0, partialName.length()))
071                .collect(Collectors.toList());
072    }
073
074    public static boolean isValidName(String name) {
075        return name != null && !name.isEmpty() && ACFPatterns.VALID_NAME_PATTERN.matcher(name).matches();
076    }
077
078    public static <T> T validate(T object, String message, Object... values) {
079        if (object == null) {
080            throw new NullPointerException(String.format(message, values));
081        }
082        return object;
083    }
084}