/*
 * Copyright 2021 Conductor Authors.
 * <p>
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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 com.netflix.conductor.core.execution.mapper;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import com.netflix.conductor.common.metadata.tasks.TaskType;
import com.netflix.conductor.common.metadata.workflow.WorkflowDef;
import com.netflix.conductor.common.metadata.workflow.WorkflowTask;
import com.netflix.conductor.model.TaskModel;
import com.netflix.conductor.model.WorkflowModel;

/**
 * An implementation of {@link TaskMapper} to map a {@link WorkflowTask} of type {@link
 * TaskType#JOIN} to a {@link TaskModel} of type {@link TaskType#JOIN}
 */
@Component
public class JoinTaskMapper implements TaskMapper {

    public static final Logger LOGGER = LoggerFactory.getLogger(JoinTaskMapper.class);

    @Override
    public String getTaskType() {
        return TaskType.JOIN.name();
    }

    /**
     * This method maps {@link TaskMapper} to map a {@link WorkflowTask} of type {@link
     * TaskType#JOIN} to a {@link TaskModel} of type {@link TaskType#JOIN} with a status of {@link
     * TaskModel.Status#IN_PROGRESS}
     *
     * @param taskMapperContext: A wrapper class containing the {@link WorkflowTask}, {@link
     *     WorkflowDef}, {@link WorkflowModel} and a string representation of the TaskId
     * @return A {@link TaskModel} of type {@link TaskType#JOIN} in a List
     */
    @Override
    public List<TaskModel> getMappedTasks(TaskMapperContext taskMapperContext) {

        LOGGER.debug("TaskMapperContext {} in JoinTaskMapper", taskMapperContext);

        WorkflowTask workflowTask = taskMapperContext.getWorkflowTask();

        Map<String, Object> joinInput = new HashMap<>();
        joinInput.put("joinOn", workflowTask.getJoinOn());

        TaskModel joinTask = taskMapperContext.createTaskModel();
        joinTask.setTaskType(TaskType.TASK_TYPE_JOIN);
        joinTask.setTaskDefName(TaskType.TASK_TYPE_JOIN);
        joinTask.setStartTime(System.currentTimeMillis());
        joinTask.setInputData(joinInput);
        joinTask.setStatus(TaskModel.Status.IN_PROGRESS);
        if (Objects.nonNull(taskMapperContext.getTaskDefinition())) {
            joinTask.setIsolationGroupId(
                    taskMapperContext.getTaskDefinition().getIsolationGroupId());
        }

        return List.of(joinTask);
    }
}
