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/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * 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.jbpm.examples.evaluation;

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

import org.kie.api.KieServices;
import org.kie.api.io.ResourceType;
import org.kie.api.runtime.KieSession;
import org.kie.api.runtime.manager.RuntimeEngine;
import org.kie.api.runtime.manager.RuntimeEnvironment;
import org.kie.api.runtime.manager.RuntimeEnvironmentBuilder;
import org.kie.api.runtime.manager.RuntimeManager;
import org.kie.api.runtime.manager.RuntimeManagerFactory;
import org.kie.api.task.TaskService;
import org.kie.api.task.model.TaskSummary;
import org.kie.test.util.db.PersistenceUtil;

public class EvaluationExample {

    public static final void main(String[] args) {
        try {
            RuntimeManager manager = getRuntimeManager("evaluation/Evaluation.bpmn");        
            RuntimeEngine runtime = manager.getRuntimeEngine(null);
            KieSession ksession = runtime.getKieSession();

            // start a new process instance
            Map params = new HashMap();
            params.put("employee", "krisv");
            params.put("reason", "Yearly performance evaluation");
    		ksession.startProcess("com.sample.evaluation", params);

    		// complete Self Evaluation
            TaskService taskService = runtime.getTaskService();
    		List tasks = taskService.getTasksAssignedAsPotentialOwner("krisv", "en-UK");
    		TaskSummary task = tasks.get(0);
    		System.out.println("'krisv' completing task " + task.getName() + ": " + task.getDescription());
    		taskService.start(task.getId(), "krisv");
    		Map results = new HashMap();
    		results.put("performance", "exceeding");
    		taskService.complete(task.getId(), "krisv", results);
    		
    		// john from HR
    		tasks = taskService.getTasksAssignedAsPotentialOwner("john", "en-UK");
    		task = tasks.get(0);
    		System.out.println("'john' completing task " + task.getName() + ": " + task.getDescription());
    		taskService.start(task.getId(), "john");
    		results = new HashMap();
    		results.put("performance", "acceptable");
    		taskService.complete(task.getId(), "john", results);
    		
    		// mary from PM
    		tasks = taskService.getTasksAssignedAsPotentialOwner("mary", "en-UK");
    		task = tasks.get(0);
    		System.out.println("'mary' completing task " + task.getName() + ": " + task.getDescription());
    		taskService.start(task.getId(), "mary");
    		results = new HashMap();
    		results.put("performance", "outstanding");
    		taskService.complete(task.getId(), "mary", results);
    		
    		System.out.println("Process instance completed");
    		
    		manager.disposeRuntimeEngine(runtime);
        } catch (Throwable t) {
            t.printStackTrace();
        }
        System.exit(0);
    }

    private static RuntimeManager getRuntimeManager(String process) {
        // load up the knowledge base
        PersistenceUtil.setupPoolingDataSource();
        RuntimeEnvironment environment = RuntimeEnvironmentBuilder.Factory.get().newDefaultBuilder()
            .addAsset(KieServices.Factory.get().getResources().newClassPathResource(process), ResourceType.BPMN2)
            .get();
        return RuntimeManagerFactory.Factory.get().newSingletonRuntimeManager(environment);
    }
    
}