package pt.ist.renderers.extensions;

import java.util.Calendar;
import java.util.Date;

import org.joda.time.DateTimeFieldType;
import org.joda.time.base.AbstractPartial;

import pt.ist.renderers.DateRenderer;
import pt.ist.renderers.components.HtmlComponent;
import pt.ist.renderers.components.HtmlText;
import pt.ist.renderers.layouts.Layout;

public class PartialRenderer extends DateRenderer {

    private boolean showFormat;
    private AbstractPartial partial;

    public PartialRenderer() {
	super();
	this.showFormat = false;
    }

    public boolean isShowFormat() {
	return showFormat;
    }

    /**
     * 
     * @property
     */
    public void setShowFormat(boolean showFormat) {
	this.showFormat = showFormat;
    }

    @Override
    public String getFormat() {
	if (isFormatSet()) {
	    return super.getFormat();
	}

	String format = "dd/MM/yyyy HH:mm:ss";

	if (!this.partial.isSupported(DateTimeFieldType.dayOfMonth())) {
	    format = format.replace("dd/", "");
	}

	if (!this.partial.isSupported(DateTimeFieldType.monthOfYear())) {
	    format = format.replace("MM/", "");
	}

	if (!this.partial.isSupported(DateTimeFieldType.year())) {
	    if (this.partial.isSupported(DateTimeFieldType.dayOfMonth())
		    || this.partial.isSupported(DateTimeFieldType.monthOfYear())) {
		format = format.replace("/yyyy", "");
	    } else {
		format = format.replace("yyyy", "");
	    }
	}

	if (!this.partial.isSupported(DateTimeFieldType.hourOfDay())) {
	    format = format.replace("HH:", "");
	}

	if (!this.partial.isSupported(DateTimeFieldType.minuteOfHour())) {
	    format = format.replace("mm:", "");
	}

	if (!this.partial.isSupported(DateTimeFieldType.secondOfMinute())) {
	    if (this.partial.isSupported(DateTimeFieldType.hourOfDay())
		    || this.partial.isSupported(DateTimeFieldType.minuteOfHour())) {
		format = format.replace(":ss", "");
	    } else {
		format = format.replace("ss", "");
	    }
	}

	return format.trim();
    }

    @Override
    protected Layout getLayout(Object object, Class type) {
	this.partial = (AbstractPartial) object;
	final Date date = this.partial != null ? convertPartialToCalendar(this.partial).getTime() : null;

	final Layout superLayout = super.getLayout(date, type);

	return new Layout() {

	    @Override
	    public HtmlComponent createComponent(Object object, Class type) {
		HtmlText text = (HtmlText) superLayout.createComponent(date, type);

		String formatText = isShowFormat() ? " (" + getFormat() + ")" : "";
		text.setText(text.getText() + formatText);

		return text;
	    }

	};
    }

    private Calendar convertPartialToCalendar(AbstractPartial partial) {
	Calendar calendar = Calendar.getInstance();
	calendar.clear();

	DateTimeFieldType[] fieldTypes = partial.getFieldTypes();
	for (int i = 0; i < fieldTypes.length; i++) {
	    DateTimeFieldType fieldType = fieldTypes[i];

	    if (fieldType.equals(DateTimeFieldType.dayOfMonth())) {
		calendar.set(Calendar.DAY_OF_MONTH, partial.get(DateTimeFieldType.dayOfMonth()));
		continue;
	    }

	    if (fieldType.equals(DateTimeFieldType.monthOfYear())) {
		calendar.set(Calendar.MONTH, partial.get(DateTimeFieldType.monthOfYear()) - 1);
		continue;
	    }

	    if (fieldType.equals(DateTimeFieldType.year())) {
		calendar.set(Calendar.YEAR, partial.get(DateTimeFieldType.year()));
		continue;
	    }

	    if (fieldType.equals(DateTimeFieldType.hourOfDay())) {
		calendar.set(Calendar.HOUR_OF_DAY, partial.get(DateTimeFieldType.hourOfDay()));
		continue;
	    }

	    if (fieldType.equals(DateTimeFieldType.minuteOfHour())) {
		calendar.set(Calendar.MINUTE, partial.get(DateTimeFieldType.minuteOfHour()));
		continue;
	    }

	    if (fieldType.equals(DateTimeFieldType.secondOfMinute())) {
		calendar.set(Calendar.SECOND, partial.get(DateTimeFieldType.secondOfMinute()));
		continue;
	    }
	}

	return calendar;
    }
}