package de.intevation.flys.client.client.ui.minfo;

import java.util.ArrayList;
import java.util.List;

import com.google.gwt.core.client.GWT;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.Label;
import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.form.fields.TextItem;
import com.smartgwt.client.widgets.form.validator.IsIntegerValidator;
import com.smartgwt.client.widgets.layout.HLayout;
import com.smartgwt.client.widgets.layout.VLayout;

import de.intevation.flys.client.client.ui.AbstractUIProvider;
import de.intevation.flys.client.client.ui.IntegerRangePanel;
import de.intevation.flys.client.shared.model.Data;
import de.intevation.flys.client.shared.model.DataItem;
import de.intevation.flys.client.shared.model.DataList;
import de.intevation.flys.client.shared.model.DefaultData;
import de.intevation.flys.client.shared.model.DefaultDataItem;


public class SedLoadPeriodPanel
extends AbstractUIProvider
//extends SedLoadPanel
{

    private TextItem start;
    private TextItem end;

    public SedLoadPeriodPanel () {
    }

    @Override
    public Canvas createOld(DataList dataList) {
        List<Data> items = dataList.getAll();
        Data start = getData(items, "start");
        Data end = getData(items, "end");
        DataItem[] startItem = start.getItems();
        DataItem[] endItem = end.getItems();

        String v1 = startItem[0].getStringValue();
        String v2 = endItem[0].getStringValue();

        int v1i = 0;
        int v2i = 0;
        try {
            v1i = Integer.parseInt(v1);
            v2i = Integer.parseInt(v2);
        }
        catch (NumberFormatException nfe) {
            GWT.log(nfe.toString());
        }
        Label old = new Label(v1i + " - " + v2i);
        HLayout layout = new HLayout();
        layout.setWidth("400px");

        Label label = new Label(dataList.getLabel());
        label.setWidth("200px");

        Canvas back = getBackButton(dataList.getState());

        layout.addMember(label);
        layout.addMember(old);
        layout.addMember(back);

        return layout;
    }

    @Override
    public Canvas create(DataList data) {
        VLayout layout = new VLayout();

//        Canvas helper = createHelper();
//        this.helperContainer.addMember(helper);

        Canvas submit = getNextButton();
        Canvas widget = createWidget(data);

        layout.addMember(widget);
        layout.addMember(submit);
        return layout;
    }

    public Canvas createWidget(DataList data) {
        VLayout layout = new VLayout();

        Label title = new Label(data.get(0).getDescription());
        title.setHeight("25px");

        DynamicForm form = new DynamicForm();
        form.setNumCols(4);
        start = new TextItem(MSG.from());
        start.setValidators(new IsIntegerValidator());
        end = new TextItem(MSG.to());
        end.setValidators(new IsIntegerValidator());
        form.setFields(start, end);
//        inputPanel.setToTitle(MSG.to());
//        inputPanel.setFromTitle(MSG.from());
//        inputPanel.setShowTitle(false);

        layout.addMember(title);
        layout.addMember(form);

        return layout;
    }

    @Override
    protected Data[] getData() {
        int v1;
        int v2;
        try {
            v1 = Integer.parseInt(start.getValueAsString());
            v2 = Integer.parseInt(end.getValueAsString());
        }
        catch(NumberFormatException nfe) {
            // warn the user...
            return new Data[0];
        }
        if (validateRange(v1, v2)) {
            List<Data> data = new ArrayList<Data>();

            DataItem startItem = new DefaultDataItem("start", "start", start.getValueAsString());
            DataItem endItem   = new DefaultDataItem("end", "end", end.getValueAsString());
            data.add(new DefaultData(
                "start",
                null,
                null,
                new DataItem[] { startItem }));
            data.add(new DefaultData(
                "end",
                null,
                null,
                new DataItem[] { endItem }));

            return data.toArray(new Data[data.size()]);
        }
        return new Data[0];
    }

    protected boolean validateRange(int v1, int v2) {
        // TODO: Set useful years for validation. Current range is between start
        // of gregorian calendar and a year in the future...
        if ((v1 > 1582 && v1 < 2100) 
            && (v2 > 1582 && v2 < 2100)) {
            return true;
        }
        return false;
    }


}