Arakne / Araknemu

 * This file is part of Araknemu.

 *

 * Araknemu is free software: you can redistribute it and/or modify

 * it under the terms of the GNU Lesser General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * Araknemu 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 Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with Araknemu.  If not, see <https://www.gnu.org/licenses/>.

 *

 * Copyright (c) 2017-2020 Vincent Quatrevieux

 */

package fr.quatrevieux.araknemu.data.living.repository.implementation.sql;

import fr.quatrevieux.araknemu.core.dbal.executor.QueryExecutor;

import fr.quatrevieux.araknemu.core.dbal.repository.Record;

import fr.quatrevieux.araknemu.core.dbal.repository.RepositoryException;

import fr.quatrevieux.araknemu.core.dbal.repository.RepositoryUtils;

import fr.quatrevieux.araknemu.data.living.entity.BanIp;

import fr.quatrevieux.araknemu.data.living.repository.BanIpRepository;

import fr.quatrevieux.araknemu.data.transformer.Transformer;

import inet.ipaddr.IPAddressString;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.time.Instant;

import java.util.Collection;

/**

 * SQL Implementation for {@link BanIpRepository}

 */

final class SqlBanIpRepository implements BanIpRepository {

    private final QueryExecutor executor;

    private final RepositoryUtils<BanIp> utils;

    private final Transformer<Instant> instantTransformer;

    private final Transformer<IPAddressString> ipAddressTransformer;

    public SqlBanIpRepository(QueryExecutor executor, Transformer<IPAddressString> ipAddressTransformer, Transformer<Instant> instantTransformer) {

        this.executor = executor;

        this.ipAddressTransformer = ipAddressTransformer;

        this.instantTransformer = instantTransformer;

        this.utils = new RepositoryUtils<>(this.executor, new Loader());

    }

    @Override

    public void initialize() throws RepositoryException {

        try {

            executor.query(

                "CREATE TABLE BANIP (" +

                    "BANIP_ID INTEGER PRIMARY KEY AUTOINCREMENT," +

                    "IP_ADDRESS VARCHAR(64)," +

                    "UPDATED_AT DATETIME," +

                    "EXPIRES_AT DATETIME," +

                    "CAUSE VARCHAR(256)," +

                    "BANISHER_ID INTEGER" +

                ")"

            );

            executor.query("CREATE INDEX IDX_EXPIRES_AT ON BANIP (EXPIRES_AT)");

        } catch (SQLException e) {

            throw new RepositoryException(e);

        }

    }

    @Override

    public void destroy() throws RepositoryException {

        try {

            executor.query("DROP TABLE BANIP");

        } catch (SQLException e) {

            throw new RepositoryException(e);

        }

    }

    @Override

    public BanIp add(BanIp entity) {

        return utils.update(

            "INSERT INTO BANIP (`IP_ADDRESS`, `UPDATED_AT`, `EXPIRES_AT`, `CAUSE`, `BANISHER_ID`) VALUES (?, ?, ?, ?, ?)",

            stmt -> {

                stmt.setString(1, ipAddressTransformer.serialize(entity.ipAddress()));

                stmt.setString(2, instantTransformer.serialize(entity.updatedAt()));

                stmt.setString(3, entity.expiresAt().map(instantTransformer::serialize).orElse(null));

                stmt.setString(4, entity.cause());

                stmt.setInt(5, entity.banisherId());

            },

            entity

        );

    }

    @Override

    public void delete(BanIp entity) {

        utils.update("DELETE FROM BANIP WHERE IP_ADDRESS = ?", stmt -> stmt.setString(1, ipAddressTransformer.serialize(entity.ipAddress())));

    }

    @Override

    public BanIp get(BanIp entity) throws RepositoryException {

        return utils.findOne(

            "SELECT * FROM BANIP WHERE BANIP_ID = ?",

            stmt -> stmt.setInt(1, entity.id())

        );

    }

    @Override

    public boolean has(BanIp entity) {

        return utils.aggregate(

            "SELECT COUNT(*) FROM BANIP WHERE BANIP_ID = ?",

            stmt -> stmt.setInt(1, entity.id())

        ) > 0;

    }

    @Override

    public Collection<BanIp> available() {

        return utils.findAll(

            "SELECT * FROM BANIP WHERE EXPIRES_AT > ? OR EXPIRES_AT IS NULL",

            stmt -> stmt.setString(1, instantTransformer.serialize(Instant.now()))

        );

    }

    @Override

    public Collection<BanIp> updated(Instant after) {

        return utils.findAll(

            "SELECT * FROM BANIP WHERE UPDATED_AT >= ?",

            stmt -> stmt.setString(1, instantTransformer.serialize(after))

        );

    }

    @Override

    public void disable(IPAddressString ipAddress) {

        final String now = instantTransformer.serialize(Instant.now());

        utils.update(

            "UPDATE BANIP SET UPDATED_AT = ?, EXPIRES_AT = ? WHERE IP_ADDRESS = ? AND (EXPIRES_AT >= ? OR EXPIRES_AT IS NULL)",

            stmt -> {

                stmt.setString(1, now);

                stmt.setString(2, now);

                stmt.setString(3, ipAddressTransformer.serialize(ipAddress));

                stmt.setString(4, now);

            }

        );

    }

    }

}