/*
    * junixsocket
    *
    * Copyright 2009-2024 Christian Kohlschütter
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.newsclub.net.mysql;
  
  import java.io.File;
  import java.io.IOException;
  import java.net.Socket;
  
  import org.newsclub.net.unix.AFUNIXSocket;
  import org.newsclub.net.unix.AFUNIXSocketAddress;
  
  import com.kohlschutter.annotations.compiletime.SuppressFBWarnings;
  import com.mysql.cj.conf.PropertyKey;
  import com.mysql.cj.conf.PropertySet;
  import com.mysql.cj.conf.RuntimeProperty;
  import com.mysql.cj.protocol.ExportControlled;
  import com.mysql.cj.protocol.ServerSession;
  import com.mysql.cj.protocol.SocketConnection;
  import com.mysql.cj.protocol.SocketFactory;
  
  /**
   * Connect to mysql databases (and compatibles) using UNIX domain sockets.
   */
  public class AFUNIXDatabaseSocketFactoryCJ implements SocketFactory {
    private AFUNIXSocket rawSocket;
  
    /**
     * Creates a new instance.
     */
    public AFUNIXDatabaseSocketFactoryCJ() {
    }
  
    @SuppressWarnings({"unchecked"})
    @SuppressFBWarnings("EI_EXPOSE_REP")
    @Override
    public Socket connect(String hostname, int portNumber,
        @SuppressWarnings("exports") PropertySet props, int loginTimeout) throws IOException {
      // Adjust the path to your MySQL socket by setting the
      // "junixsocket.file" property
      // If no socket path is given, use the default: /tmp/mysql.sock
      RuntimeProperty<String> prop = props.getStringProperty("junixsocket.file");
      String sock;
      if (prop != null && !prop.isExplicitlySet()) {
        sock = prop.getStringValue();
      } else {
        sock = "/tmp/mysql.sock";
      }
      final File socketFile = new File(sock);
  
      AFUNIXSocket socket = AFUNIXSocket.newInstance();
  
      int connectTimeout = props.getIntegerProperty(PropertyKey.connectTimeout).getValue();
      int timeout = MysqlHelper.shorterTimeout(connectTimeout, loginTimeout);
  
      socket.connect(AFUNIXSocketAddress.of(socketFile), timeout);
  
      return (this.rawSocket = socket);
    }
  
    @SuppressWarnings({"unchecked"})
    @SuppressFBWarnings("EI_EXPOSE_REP")
    @Override
    public Socket performTlsHandshake(@SuppressWarnings("exports") SocketConnection socketConnection,
        @SuppressWarnings("exports") ServerSession serverSession) throws IOException {
      return ExportControlled.performTlsHandshake(this.rawSocket, socketConnection,
          serverSession == null ? null : serverSession.getServerVersion(), null);
    }
  }