/*
 * 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.optaplanner.examples.machinereassignment.solver.solution.initializer;

import org.optaplanner.core.api.score.director.ScoreDirector;
import org.optaplanner.core.impl.phase.custom.CustomPhaseCommand;
import org.optaplanner.examples.machinereassignment.domain.MachineReassignment;
import org.optaplanner.examples.machinereassignment.domain.MrMachine;
import org.optaplanner.examples.machinereassignment.domain.MrProcessAssignment;

public class ToOriginalMachineSolutionInitializer implements CustomPhaseCommand<MachineReassignment> {

    @Override
    public void changeWorkingSolution(ScoreDirector<MachineReassignment> scoreDirector) {
        MachineReassignment machineReassignment = scoreDirector.getWorkingSolution();
        initializeProcessAssignmentList(scoreDirector, machineReassignment);
    }

    private void initializeProcessAssignmentList(ScoreDirector<MachineReassignment> scoreDirector,
            MachineReassignment machineReassignment) {
        for (MrProcessAssignment processAssignment : machineReassignment.getProcessAssignmentList()) {
            MrMachine originalMachine = processAssignment.getOriginalMachine();
            MrMachine machine = originalMachine == null ? machineReassignment.getMachineList().get(0) : originalMachine;
            scoreDirector.beforeVariableChanged(processAssignment, "machine");
            processAssignment.setMachine(machine);
            scoreDirector.afterVariableChanged(processAssignment, "machine");
            scoreDirector.triggerVariableListeners();
        }
    }

}
