/**
 * *******************************************************************************
 *  Copyright (c) 2017 Timing-Architects Embedded Systems GmbH and others.
 *  All rights reserved. This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v1.0
 *  which accompanies this distribution, and is available at
 *  http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Timing-Architects Embedded Systems GmbH - initial API and implementation
 *
 * *******************************************************************************
 */
package org.eclipse.app4mc.amalthea.generator.ui;

import java.util.Arrays;

import org.eclipse.app4mc.amalthea.generator.configuration.DoubleDistribution;
import org.eclipse.app4mc.amalthea.generator.configuration.Generation;
import org.eclipse.app4mc.amalthea.generator.configuration.IntegerDistribution;
import org.eclipse.app4mc.amalthea.generator.configuration.PercentageDistribution;
import org.eclipse.app4mc.amalthea.generator.configuration.PriorityDeterminationAlgorithm;
import org.eclipse.app4mc.amalthea.generator.configuration.ProcessMappingAlgorithms;
import org.eclipse.app4mc.amalthea.generator.configuration.RTMGC;
import org.eclipse.app4mc.amalthea.generator.configuration.RTMGCFactory;
import org.eclipse.app4mc.amalthea.generator.configuration.TaskProperties;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;

public class TasksConfigurationHelper implements IConfigurationHelper {

	private IntegerDistributionGroup count;
	private PercentageDistributionGroup load;
	private IntegerDistributionGroup group;
	private IntegerDistributionGroup mta;
	private DoubleDistributionGroup deadline;
	private IntegerDistributionGroup schedule;
	private Combo mappingCombo;
	private Combo priorityCombo;
	
	public void addTabItem(TabFolder parent) {
		TabItem tab = new TabItem(parent, SWT.NONE);
		tab.setText("Tasks");
		
		ScrolledComposite sc = new ScrolledComposite(parent, SWT.BORDER | SWT.V_SCROLL);
		
		Composite container = new Composite(sc, SWT.NONE);
		GridLayout gridLayout = new GridLayout();
	    container.setLayout(gridLayout);
	    gridLayout.numColumns = 2;
		
	    sc.setExpandVertical(true);
	    sc.setExpandHorizontal(true);
		
	    // distributions
	    this.count = new IntegerDistributionGroup(container, "Number of Tasks to be generated", 9, 15, 22);
	    this.load = new PercentageDistributionGroup(container, "Load in Percentage for each Task", 1, 20);
	    this.group = new IntegerDistributionGroup(container, "Number of Tasks per Task Group", 1);
	    this.mta = new IntegerDistributionGroup(container, "Number of Concurrent Task Activations", 1, 5);
	    this.deadline = new DoubleDistributionGroup(container, "Factor of the Deadline Relative to the Recurrence of the Task", 1);
	    this.schedule = new IntegerDistributionGroup(container, "Number of Call Sequences between Schedule Points that are added", 1);
		
	    // call graphs
	    
	    // mapping determination
	    Label label = new Label(container, SWT.NONE);
	    label.setText("Mapping Determination Algorithm");
	    label.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
	    mappingCombo = new Combo(container, SWT.READ_ONLY);
	    mappingCombo.setItems(Arrays.stream(ProcessMappingAlgorithms.values()).map(Enum::name).toArray(String[]::new));
	    mappingCombo.select(0);
	    
	    // priority determination
	    label = new Label(container, SWT.NONE);
	    label.setText("Priority Determination Algorithm");
	    label.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));
	    priorityCombo = new Combo(container, SWT.READ_ONLY);
	    priorityCombo.setItems(Arrays.stream(PriorityDeterminationAlgorithm.values()).map(Enum::name).toArray(String[]::new));
	    priorityCombo.select(0);
	    
	    
	    sc.setContent(container);
		sc.setMinSize(container.computeSize(SWT.DEFAULT, SWT.DEFAULT));
	    tab.setControl(sc);
	}

	@Override
	public void loadConfiguration(RTMGC rtmgc) {
		if(null != rtmgc) {
			Generation generation = rtmgc.getGeneration();
			if(null != generation) {
				TaskProperties tasks = generation.getTasks();
				if(null != tasks) {
					IntegerDistribution count = tasks.getCount();
					this.count.set(count);
					PercentageDistribution load = tasks.getLoad();
					this.load.set(load);
					IntegerDistribution group = tasks.getPerTaskGroup();
					this.group.set(group);
					IntegerDistribution mta = tasks.getMta();
					this.mta.set(mta);
					DoubleDistribution deadline = tasks.getDeadlineFactor();
					this.deadline.set(deadline);
					IntegerDistribution schedule = tasks.getCallSequencesBetweenSchedulePoints();
					this.schedule.set(schedule);

					this.mappingCombo.select(tasks.getMappingDetermination().getValue());
					this.priorityCombo.select(tasks.getPriorityDetermination().getValue());
				}
			}
		}
	}

	@Override
	public void updateConfiguration(RTMGC rtmgc) {
		if(null != rtmgc) {
			Generation generation = rtmgc.getGeneration();
			if(null == generation) {
				generation = RTMGCFactory.eINSTANCE.createGeneration();
				rtmgc.setGeneration(generation);
			}
			TaskProperties tasks = generation.getTasks();
			if(null == tasks) {
				tasks = RTMGCFactory.eINSTANCE.createTaskProperties();
				generation.setTasks(tasks);
			}
			IntegerDistribution count = this.count.get();
			tasks.setCount(count);
			PercentageDistribution load = this.load.get();
			tasks.setLoad(load);
			IntegerDistribution group = this.group.get(); 
			tasks.setPerTaskGroup(group);
			IntegerDistribution mta = this.mta.get();
			tasks.setMta(mta);
			DoubleDistribution deadline = this.deadline.get();
			tasks.setDeadlineFactor(deadline);
			IntegerDistribution schedule = this.schedule.get();
			tasks.setCallSequencesBetweenSchedulePoints(schedule);
			
			tasks.setMappingDetermination(ProcessMappingAlgorithms.get(this.mappingCombo.getSelectionIndex()));
			tasks.setPriorityDetermination(PriorityDeterminationAlgorithm.get(this.priorityCombo.getSelectionIndex()));
		}
	}

	@Override
	public boolean isValid() {
		return true;
	}
}