package net.sourceforge.fenixedu.presentationTier.renderers;

import java.text.Collator;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import net.sourceforge.fenixedu.dataTransferObject.administrativeOffice.dismissal.DismissalBean;
import net.sourceforge.fenixedu.dataTransferObject.administrativeOffice.dismissal.DismissalBean.DismissalType;
import net.sourceforge.fenixedu.dataTransferObject.administrativeOffice.dismissal.DismissalBean.SelectedCurricularCourse;
import net.sourceforge.fenixedu.domain.CurricularCourse;
import net.sourceforge.fenixedu.domain.ExecutionPeriod;
import net.sourceforge.fenixedu.domain.StudentCurricularPlan;
import net.sourceforge.fenixedu.domain.degreeStructure.Context;
import net.sourceforge.fenixedu.domain.degreeStructure.CourseGroup;
import net.sourceforge.fenixedu.presentationTier.renderers.controllers.CopyCheckBoxValuesController;
import net.sourceforge.fenixedu.presentationTier.renderers.converters.DomainObjectKeyConverter;
import net.sourceforge.fenixedu.renderers.InputRenderer;
import net.sourceforge.fenixedu.renderers.components.HtmlBlockContainer;
import net.sourceforge.fenixedu.renderers.components.HtmlCheckBox;
import net.sourceforge.fenixedu.renderers.components.HtmlComponent;
import net.sourceforge.fenixedu.renderers.components.HtmlMultipleHiddenField;
import net.sourceforge.fenixedu.renderers.components.HtmlRadioButton;
import net.sourceforge.fenixedu.renderers.components.HtmlRadioButtonGroup;
import net.sourceforge.fenixedu.renderers.components.HtmlTable;
import net.sourceforge.fenixedu.renderers.components.HtmlTableCell;
import net.sourceforge.fenixedu.renderers.components.HtmlTableRow;
import net.sourceforge.fenixedu.renderers.components.HtmlText;
import net.sourceforge.fenixedu.renderers.components.converters.Converter;
import net.sourceforge.fenixedu.renderers.layouts.Layout;
import net.sourceforge.fenixedu.renderers.model.MetaObjectFactory;
import net.sourceforge.fenixedu.renderers.schemas.Schema;

import org.apache.commons.beanutils.BeanComparator;

public class StudentDismissalRenderer extends InputRenderer {
    
    private Integer initialWidth = 50;

    private Integer widthDecreasePerLevel = 3;

    private String tablesClasses = "showinfo3 mvert0";

    private String groupRowClasses = "bgcolor2";
    
    private String curricularCourseRowClasses = "";
    
    private String groupCellClasses = "smalltxt, aright";
    
    private String curricularCourseCellClasses = "smalltxt, aright";
    
    
    public Integer getInitialWidth() {
	return initialWidth;
    }

    public void setInitialWidth(Integer initialWidth) {
	this.initialWidth = initialWidth;
    }

    public Integer getWidthDecreasePerLevel() {
	return widthDecreasePerLevel;
    }

    public void setWidthDecreasePerLevel(Integer widthDecreasePerLevel) {
	this.widthDecreasePerLevel = widthDecreasePerLevel;
    }

    public String getTablesClasses() {
	return tablesClasses;
    }

    public void setTablesClasses(String tablesClasses) {
	this.tablesClasses = tablesClasses;
    }

    public String getGroupRowClasses() {
	return groupRowClasses;
    }

    public void setGroupRowClasses(String groupRowClasses) {
	this.groupRowClasses = groupRowClasses;
    }

    public String getCurricularCourseRowClasses() {
        return curricularCourseRowClasses;
    }

    public void setCurricularCourseRowClasses(String curricularCourseRowClasses) {
        this.curricularCourseRowClasses = curricularCourseRowClasses;
    }

    private String[] getGroupCellClasses() {
	return groupCellClasses.split(",");
    }

    public void setGroupCellClasses(String groupCellClasses) {
	this.groupCellClasses = groupCellClasses;
    }
    
    public String getGroupNameClasses() {
	return getGroupCellClasses()[0];
    }
    
    public String getGroupRadioClasses() {
	return getGroupCellClasses()[1];
    }
    
    private String[] getCurricularCourseCellClasses() {
	return curricularCourseCellClasses.split(",");
    }

    public void setCurricularCourseCellClasses(String curricularCourseCellClasses) {
	this.curricularCourseCellClasses = curricularCourseCellClasses;
    }
    
    public String getCurricularCourseNameClasses() {
	return getCurricularCourseCellClasses()[0];
    }
    
    public String getCurricularCourseCheckBoxClasses() {
	return getCurricularCourseCellClasses()[1];
    }

    public StudentDismissalRenderer() {
	super();
    }

    @Override
    protected Layout getLayout(Object object, Class type) {
	return new StudentDismissalLayout();
    }

    private class StudentDismissalLayout extends Layout {

	private final CopyCheckBoxValuesController curricularCoursesController = new CopyCheckBoxValuesController();
	private HtmlRadioButtonGroup radioButtonGroup = null;
	private DismissalBean dismissalBean = null;
	
	@Override
	public HtmlComponent createComponent(Object object, Class type) {
	    dismissalBean = (DismissalBean) object;

	    HtmlBlockContainer container = new HtmlBlockContainer();
	    if (dismissalBean == null) {
		return new HtmlText();
	    }
	    
	    if(dismissalBean.getDismissalType() == DismissalType.CURRICULUM_GROUP_CREDITS) {
		radioButtonGroup = new HtmlRadioButtonGroup();
		radioButtonGroup.bind(getInputContext().getMetaObject(), "courseGroup"); // slot refered by name
		radioButtonGroup.setConverter(new DomainObjectKeyConverter());
		container.addChild(radioButtonGroup);
		generateCourseGroups(container, dismissalBean.getStudentCurricularPlan(), dismissalBean.getStudentCurricularPlan().getDegreeCurricularPlan().getRoot(), 0);
		
	    } else {
		HtmlMultipleHiddenField hiddenCurricularCourses = new HtmlMultipleHiddenField();
		hiddenCurricularCourses.bind(getInputContext().getMetaObject(), "dismissals"); // slot refered by name
		hiddenCurricularCourses.setConverter(new SelectedCurricularCoursesKeyConverter());
		hiddenCurricularCourses.setController(curricularCoursesController);
		container.addChild(hiddenCurricularCourses);
		generateCurricularCourses(container, dismissalBean.getStudentCurricularPlan());
	    }

	    return container;
	}

	private void generateCurricularCourses(final HtmlBlockContainer blockContainer, final StudentCurricularPlan studentCurricularPlan) {
	    final HtmlTable groupTable = new HtmlTable();
	    blockContainer.addChild(groupTable);
	    groupTable.setClasses(getTablesClasses());
	    groupTable.setStyle("width: " + getInitialWidth() + "em; margin-left: 0em;");
	    
	    final List<CurricularCourse> orderedCurricularCourses = new ArrayList<CurricularCourse>(studentCurricularPlan.getAllCurricularCoursesToDismissal());
	    Collections.sort(orderedCurricularCourses, new BeanComparator("name", Collator.getInstance()));
	    
	    for (final CurricularCourse curricularCourse : orderedCurricularCourses) {
		final HtmlTableRow htmlTableRow = groupTable.createRow();
		htmlTableRow.setClasses(getCurricularCourseRowClasses());
		
		final HtmlTableCell nameCell = htmlTableRow.createCell(); 
    	    	nameCell.setBody(new HtmlText(curricularCourse.getName()));
    	    	nameCell.setClasses(getCurricularCourseNameClasses());
    	    
    	    	final HtmlTableCell checkBoxCell = htmlTableRow.createCell();
    	    	checkBoxCell.setClasses(getCurricularCourseCheckBoxClasses());
    	    	
    	    	final HtmlCheckBox checkBox = new HtmlCheckBox(dismissalBean.containsDismissal(curricularCourse));
    	    	checkBox.setName("curricularCourseCheckBox" + curricularCourse.getIdInternal());
    	    	checkBox.setUserValue(MetaObjectFactory.createObject(curricularCourse, new Schema(CurricularCourse.class)).getKey().toString());
    	    	checkBoxCell.setBody(checkBox);
    	    	curricularCoursesController.addCheckBox(checkBox);
	    }
	}

	private void generateCourseGroups(final HtmlBlockContainer blockContainer, final StudentCurricularPlan studentCurricularPlan, final CourseGroup courseGroup, int depth) {
	    final HtmlTable groupTable = new HtmlTable();
	    blockContainer.addChild(groupTable);
	    groupTable.setClasses(getTablesClasses());
	    groupTable.setStyle("width: " + (getInitialWidth() - depth) + "em; margin-left: " + depth + "em;");
	    
	    final HtmlTableRow htmlTableRow = groupTable.createRow();
	    htmlTableRow.setClasses(getGroupRowClasses());
	    
	    final HtmlTableCell nameCell = htmlTableRow.createCell();
	    nameCell.setBody(new HtmlText(courseGroup.getName()));
	    nameCell.setClasses(getGroupNameClasses());
	    
	    final HtmlTableCell currentCreditsCell = htmlTableRow.createCell();
	    final double ectsCreditsForCourseGroup = studentCurricularPlan.getEctsCreditsForCourseGroup(courseGroup).doubleValue();
	    if (ectsCreditsForCourseGroup == 0d) {
		currentCreditsCell.setBody(new HtmlText("ECTS:  -"));
	    } else {
		currentCreditsCell.setBody(new HtmlText("ECTS: " + ectsCreditsForCourseGroup));
	    }
	    currentCreditsCell.setClasses("smalltxt");
	    currentCreditsCell.setStyle("width: 6em;");
	    
	    final HtmlTableCell creditsMinCell = htmlTableRow.createCell();
	    creditsMinCell.setBody(new HtmlText("Min: " + courseGroup.getMinEctsCredits(ExecutionPeriod.readActualExecutionPeriod())));
	    creditsMinCell.setClasses("smalltxt");
	    creditsMinCell.setStyle("width: 6em;");
	    
	    final HtmlTableCell creditsMaxCell = htmlTableRow.createCell();
	    creditsMaxCell.setBody(new HtmlText("Max: " + courseGroup.getMaxEctsCredits(ExecutionPeriod.readActualExecutionPeriod())));
	    creditsMaxCell.setClasses("smalltxt");
	    creditsMaxCell.setStyle("width: 6em;");
	    
	    final HtmlTableCell radioButtonCell = htmlTableRow.createCell();
	    final HtmlRadioButton radioButton = radioButtonGroup.createRadioButton();
	    radioButton.setUserValue(MetaObjectFactory.createObject(courseGroup, new Schema(CourseGroup.class)).getKey().toString());
	    radioButton.setChecked(courseGroup == dismissalBean.getCourseGroup());
	    radioButtonCell.setBody(radioButton);
	    radioButtonCell.setClasses(getGroupRadioClasses());
	    radioButtonCell.setStyle("width: 2em;");
	    
	    for (final Context context : courseGroup.getSortedChildContextsWithCourseGroups()) {
		generateCourseGroups(blockContainer, studentCurricularPlan, (CourseGroup) context.getChildDegreeModule(), depth + getWidthDecreasePerLevel());
	    }
	}
    }
    
    public static class SelectedCurricularCoursesKeyConverter extends Converter {

	@Override
	public Object convert(Class type, Object value) {
	    
	    if (value == null) {
		return null;
	    }
	    
	    final DomainObjectKeyConverter converter = new DomainObjectKeyConverter();
	    final List<SelectedCurricularCourse> result = new ArrayList<SelectedCurricularCourse>();

	    final String[] values = (String[]) value;
	    for (int i = 0; i < values.length; i++) {
		result.add(new SelectedCurricularCourse((CurricularCourse) converter.convert(type, values[i])));
	    }
	    return result;
	}
    }    
}