/*
 * PlotSquared, a land and world management plugin for Minecraft.
 * Copyright (C) IntellectualSites <https://intellectualsites.com>
 * Copyright (C) IntellectualSites team and contributors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package com.plotsquared.bukkit.uuid;

import com.earth2me.essentials.Essentials;
import com.earth2me.essentials.User;
import com.plotsquared.core.uuid.UUIDMapping;
import com.plotsquared.core.uuid.UUIDService;
import org.checkerframework.checker.nullness.qual.NonNull;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.UUID;

/**
 * UUID service using the EssentialsX API
 */
public class EssentialsUUIDService implements UUIDService {

    private final Essentials essentials;

    public EssentialsUUIDService() {
        this.essentials = Essentials.getPlugin(Essentials.class);
    }

    @Override
    public @NonNull List<UUIDMapping> getNames(final @NonNull List<UUID> uuids) {
        return Collections.emptyList();
    }

    @Override
    public @NonNull List<UUIDMapping> getUUIDs(final @NonNull List<String> usernames) {
        final List<UUIDMapping> mappings = new ArrayList<>(usernames.size());
        for (final String username : usernames) {
            try {
                final User user = essentials.getUser(username);
                if (user != null) {
                    final UUID uuid = user.getConfigUUID();
                    if (uuid != null) {
                        mappings.add(new UUIDMapping(uuid, username));
                    }
                }
            } catch (final Exception ignored) {
            }
        }
        return mappings;
    }

}