/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.texera.amber.operator.source.sql.mysql

import org.apache.texera.amber.core.executor.OpExecWithClassName
import org.apache.texera.amber.core.virtualidentity.{ExecutionIdentity, WorkflowIdentity}
import org.apache.texera.amber.core.workflow.{OutputPort, PhysicalOp, SchemaPropagationFunc}
import org.apache.texera.amber.operator.metadata.{OperatorGroupConstants, OperatorInfo}
import org.apache.texera.amber.operator.source.sql.SQLSourceOpDesc
import org.apache.texera.amber.operator.source.sql.mysql.MySQLConnUtil.connect
import org.apache.texera.amber.util.JSONUtils.objectMapper

import java.sql.{Connection, SQLException}

@deprecated("MySQL source operator is no longer executable.", "1.1.0-incubating")
class MySQLSourceOpDesc extends SQLSourceOpDesc {

  override def getPhysicalOp(
      workflowId: WorkflowIdentity,
      executionId: ExecutionIdentity
  ): PhysicalOp =
    PhysicalOp
      .sourcePhysicalOp(
        workflowId,
        executionId,
        this.operatorIdentifier,
        OpExecWithClassName(
          "org.apache.texera.amber.operator.source.sql.mysql.MySQLSourceOpExec",
          objectMapper.writeValueAsString(this)
        )
      )
      .withInputPorts(operatorInfo.inputPorts)
      .withOutputPorts(operatorInfo.outputPorts)
      .withPropagateSchema(
        SchemaPropagationFunc(_ => Map(operatorInfo.outputPorts.head.id -> sourceSchema()))
      )

  override def operatorInfo: OperatorInfo =
    OperatorInfo(
      "MySQL Source",
      "Read data from a MySQL instance",
      OperatorGroupConstants.DATABASE_GROUP,
      inputPorts = List.empty,
      outputPorts = List(OutputPort())
    )

  @throws[SQLException]
  override def establishConn: Connection = connect(host, port, database, username, password)

  override def updatePort(): Unit = port = if (port.trim().equals("default")) "3306" else port

}
