/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
 * Software engineering by Intevation GmbH
 *
 * This file is Free Software under the GNU AGPL (>=v3)
 * and comes with ABSOLUTELY NO WARRANTY! Check out the
 * documentation coming with Dive4Elements River for details.
 */

package org.dive4elements.river.client.client.ui.fixation;

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

import org.dive4elements.river.client.shared.model.Data;
import org.dive4elements.river.client.shared.model.DataItem;
import org.dive4elements.river.client.shared.model.DataList;
import org.dive4elements.river.client.shared.model.DefaultData;
import org.dive4elements.river.client.shared.model.DefaultDataItem;
import org.dive4elements.river.client.shared.model.FixingsOverviewInfo;

import com.smartgwt.client.types.VerticalAlignment;
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.SelectItem;
import com.smartgwt.client.widgets.layout.HLayout;
import com.smartgwt.client.widgets.layout.VLayout;

public class FixFunctionSelect extends FixationPanel {
    private static final Map<String, String> funcDesc = new HashMap<String, String>();

    static {
        funcDesc.put("log", "W(Q) = m*ln(Q + b)");
        funcDesc.put("linear", "W(Q) = m * Q + b");
        funcDesc.put("log-linear", "W(Q) = a*ln(m*Q+b)");
        funcDesc.put("exp", "W(Q) = m * a^Q + b");
        funcDesc.put("quad", "W(Q) = n*Q^2+m*Q+b");
        funcDesc.put("pow", "W(Q) = a * Q^c + d");
        funcDesc.put("sq-pow", "S(Q) = a * Q^b");
    }

    /** The combobox. */
    protected DynamicForm form;

    @Override
    public Canvas createWidget(final DataList data) {
        final VLayout layout = new VLayout();
        layout.setAlign(VerticalAlignment.TOP);
        layout.setHeight(25);

        final LinkedHashMap initial = new LinkedHashMap();

        this.form = new DynamicForm();

        final int size = data.size();

        for (int i = 0; i < size; i++) {
            final Data d = data.get(i);

            final Label label = new Label(d.getDescription());
            label.setValign(VerticalAlignment.TOP);
            label.setHeight(20);
            label.setWidth(400);

            final SelectItem combobox = new SelectItem(d.getLabel());
            combobox.setWidth(250);

            final LinkedHashMap<String, String> funcTypes = new LinkedHashMap<String, String>();

            boolean defaultSet = false;
            boolean first = true;

            final DataItem def = d.getDefault();
            final String defValue = def != null ? def.getStringValue() : null;

            if (defValue != null && defValue.length() > 0) {
                initial.put(d.getLabel(), def.getStringValue());
                defaultSet = true;
            }

            // I was here. Me 2.
            for (final DataItem item : d.getItems()) {
                if (!defaultSet && first) {
                    initial.put(d.getLabel(), item.getStringValue());
                    first = false;
                }

                funcTypes.put(item.getStringValue(), item.getLabel());
            }

            label.setWidth(50);
            combobox.setValueMap(funcTypes);
            combobox.setShowTitle(false);
            this.form.setItems(combobox);

            layout.addMember(label);
            layout.addMember(this.form);
        }

        this.form.setValues(initial);

        layout.setAlign(VerticalAlignment.TOP);

        return layout;
    }

    @Override
    public Canvas createOld(final DataList dataList) {
        final HLayout layout = new HLayout();
        final VLayout vLayout = new VLayout();
        layout.setWidth("400px");

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

        final int size = dataList.size();
        for (int i = 0; i < size; i++) {
            final Data data = dataList.get(i);
            final DataItem[] items = data.getItems();

            for (final DataItem item : items) {
                final HLayout hLayout = new HLayout();

                final String desc = funcDesc.containsKey(item.getLabel()) ? funcDesc.get(item.getLabel()) : item.getLabel();
                hLayout.addMember(label);
                hLayout.addMember(new Label(desc));

                vLayout.addMember(hLayout);
                vLayout.setWidth("130px");
            }
        }

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

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

        return layout;
    }

    @Override
    public Data[] getData() {
        final Map<?, ?> values = this.form.getValues();

        final Data[] list = new Data[values.size()];
        int i = 0;

        for (final Map.Entry<?, ?> entry : values.entrySet()) {
            final String fieldname = (String) entry.getKey();
            final String selection = (String) entry.getValue();

            final DataItem item = new DefaultDataItem(fieldname, null, selection);

            list[i++] = new DefaultData(fieldname, null, null, new DataItem[] { item });
        }

        return list;
    }

    @Override
    public void setValues(final String cid, final boolean checked) {
    }

    @Override
    public boolean renderCheckboxes() {
        return false;
    }

    @Override
    public void success(final FixingsOverviewInfo fixInfo) {
    }
}