/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  package org.apache.myfaces.tobago.renderkit.html.scarborough.standard.tag;
  
  import org.apache.myfaces.tobago.component.Attributes;
  import org.apache.myfaces.tobago.component.Facets;
  import org.apache.myfaces.tobago.component.RendererTypes;
  import org.apache.myfaces.tobago.component.UIBox;
  import org.apache.myfaces.tobago.component.UIButton;
  import org.apache.myfaces.tobago.component.UICalendar;
  import org.apache.myfaces.tobago.component.UIDate;
  import org.apache.myfaces.tobago.component.UIDatePicker;
  import org.apache.myfaces.tobago.component.UIGridLayout;
  import org.apache.myfaces.tobago.component.UIPanel;
  import org.apache.myfaces.tobago.component.UIPopup;
  import org.apache.myfaces.tobago.component.UITime;
  import org.apache.myfaces.tobago.event.PopupActionListener;
  import org.apache.myfaces.tobago.internal.util.DateFormatUtils;
  import org.apache.myfaces.tobago.internal.util.FacesContextUtils;
  import org.apache.myfaces.tobago.layout.Measure;
  import org.apache.myfaces.tobago.renderkit.html.DataAttributes;
  import org.apache.myfaces.tobago.util.ComponentUtils;
  import org.apache.myfaces.tobago.util.CreateComponentUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.el.ELContext;
  import javax.el.ExpressionFactory;
  import javax.el.ValueExpression;
  import javax.faces.component.UIComponent;
  import javax.faces.context.FacesContext;
  import javax.faces.convert.Converter;
  import javax.faces.convert.DateTimeConverter;
  import java.io.IOException;
  import java.util.TimeZone;
  
  public class DatePickerRenderer extends LinkRenderer {
  
    private static final Logger LOG = LoggerFactory.getLogger(DatePickerRenderer.class);
  
    @Override
    public void onComponentCreated(FacesContext facesContext, UIComponent component, UIComponent parent) {
      final UIDatePicker picker = (UIDatePicker) component;
      if (picker.getFor() == null) {
        picker.setFor("@auto");
      }
      picker.setImmediate(true);
      final String linkId = picker.getId();
      picker.setImage("image/date.gif");
  
      // create popup
      final String popupId = linkId != null ? linkId + "popup" : facesContext.getViewRoot().createUniqueId();
      final UIPopup popup = (UIPopup) CreateComponentUtils.createComponent(
          facesContext, UIPopup.COMPONENT_TYPE, RendererTypes.POPUP, popupId);
      final UIGridLayout layoutOfPopup = (UIGridLayout) CreateComponentUtils.createComponent(
          facesContext, UIGridLayout.COMPONENT_TYPE, RendererTypes.GRID_LAYOUT, "layoutPopup");
      layoutOfPopup.setColumns("auto");
      layoutOfPopup.setRows("auto");
      popup.getFacets().put(Facets.LAYOUT, layoutOfPopup);
      popup.getAttributes().put(Attributes.Z_INDEX, 10);
      picker.getFacets().put(Facets.POPUP, popup);
      picker.onComponentPopulated(facesContext, parent);
      popup.setRendered(false);
      popup.onComponentPopulated(facesContext, picker);
  
      final ExpressionFactory expressionFactory = facesContext.getApplication().getExpressionFactory();
      final ELContext elContext = facesContext.getELContext();
      popup.setValueExpression(Attributes.LEFT, expressionFactory.createValueExpression(
          elContext, "#{tobagoContext.actionPosition.right.pixel + 5}", Object.class));
      popup.setValueExpression(Attributes.TOP, expressionFactory.createValueExpression(
          elContext, "#{tobagoContext.actionPosition.top.pixel}", Object.class));
  
      final UIBox box = (UIBox) CreateComponentUtils.createComponent(
          facesContext, UIBox.COMPONENT_TYPE, RendererTypes.BOX, "box");
      popup.getChildren().add(box);
      box.setValueExpression(Attributes.LABEL, expressionFactory.createValueExpression(
          elContext, "#{tobagoContext.resourceBundle.datePickerTitle}", String.class));
      final UIGridLayout layoutOfBox = (UIGridLayout) CreateComponentUtils.createComponent(
          facesContext, UIGridLayout.COMPONENT_TYPE, RendererTypes.GRID_LAYOUT, "layout");
      box.getFacets().put(Facets.LAYOUT, layoutOfBox);
      layoutOfBox.setRows("*;auto;auto");
  
     final UICalendar calendar = (UICalendar) CreateComponentUtils.createComponent(
         facesContext, UICalendar.COMPONENT_TYPE, RendererTypes.CALENDAR, "calendar");
     box.getChildren().add(calendar);
 
      // fixme: should work automatically from the layout manager
     final Measure width = getResourceManager().getThemeMeasure(facesContext, calendar, "minimumWidth");
     layoutOfBox.setColumns(width.serialize());
 
     // add time input
     final UIPanel timePanel = (UIPanel) CreateComponentUtils.createComponent(
         facesContext, UIPanel.COMPONENT_TYPE, RendererTypes.PANEL, "timePanel");
     box.getChildren().add(timePanel);
     final UIGridLayout layoutOfTime = (UIGridLayout) CreateComponentUtils.createComponent(
         facesContext, UIGridLayout.COMPONENT_TYPE, RendererTypes.GRID_LAYOUT, "timePanelLayout");
     timePanel.getFacets().put(Facets.LAYOUT, layoutOfTime);
     layoutOfTime.setColumns("1*;auto;1*");
     final UIPanel cell1 = (UIPanel) CreateComponentUtils.createComponent(
         facesContext, UIPanel.COMPONENT_TYPE, RendererTypes.PANEL, "cell1");
     cell1.onComponentPopulated(facesContext, parent);
     timePanel.getChildren().add(cell1);
 
     final UITime time = (UITime) CreateComponentUtils.createComponent(
         facesContext, UITime.COMPONENT_TYPE, RendererTypes.TIME, "time");
     timePanel.getChildren().add(time);
 
     final UIPanel cell2 = (UIPanel) CreateComponentUtils.createComponent(
         facesContext, UIPanel.COMPONENT_TYPE, RendererTypes.PANEL, "cell2");
     cell2.onComponentPopulated(facesContext, parent);
     timePanel.getChildren().add(cell2);
 
     timePanel.onComponentPopulated(facesContext, parent);
 
 
     final UIPanel buttonPanel = (UIPanel) CreateComponentUtils.createComponent(
         facesContext, UIPanel.COMPONENT_TYPE, RendererTypes.PANEL, "buttonPanel");
     final UIGridLayout layoutOfButtons = (UIGridLayout) CreateComponentUtils.createComponent(
         facesContext, UIGridLayout.COMPONENT_TYPE, RendererTypes.GRID_LAYOUT, "buttonPanelLayout");
     buttonPanel.setLayoutManager(layoutOfButtons);
     layoutOfButtons.setColumns("*;*");
     layoutOfButtons.setRows("auto");
 
     box.getChildren().add(buttonPanel);
     box.onComponentPopulated(facesContext, parent);
 
     final UIButton okButton = (UIButton) CreateComponentUtils.createComponent(
         facesContext, UIButton.COMPONENT_TYPE, RendererTypes.BUTTON, "ok");
     buttonPanel.getChildren().add(okButton);
     okButton.setValueExpression(Attributes.LABEL, expressionFactory.createValueExpression(
         elContext, "#{tobagoContext.resourceBundle.datePickerOk}", String.class));
     ComponentUtils.putDataAttributeWithPrefix(okButton, DataAttributes.DATEPICKEROK, true);
     okButton.getAttributes().put(Attributes.POPUP_CLOSE, "afterSubmit");
     okButton.getAttributes().put(Attributes.ONCLICK, "/* fixme: avoid submit */");
     final UIButton cancelButton = (UIButton) CreateComponentUtils.createComponent(
         facesContext, UIButton.COMPONENT_TYPE, RendererTypes.BUTTON, "cancel");
     buttonPanel.getChildren().add(cancelButton);
     cancelButton.setValueExpression(Attributes.LABEL, expressionFactory.createValueExpression(
         elContext, "#{tobagoContext.resourceBundle.datePickerCancel}", String.class));
     cancelButton.getAttributes().put(Attributes.POPUP_CLOSE, "immediate");
 
     buttonPanel.onComponentPopulated(facesContext, parent);
   }
 
   @Override
   public void prepareRender(FacesContext facesContext, UIComponent component) throws IOException {
     UIDatePicker picker = (UIDatePicker) component;
     // todo: use Measure instead of int
     // todo: call setWidth ???
     picker.getAttributes().put(
         Attributes.LAYOUT_WIDTH,
         getResourceManager().getThemeMeasure(facesContext, picker, "pickerWidth").getPixel());
 
     FacesContextUtils.addPopup(facesContext, (UIPopup) picker.getFacets().get(Facets.POPUP));
 
     super.prepareRender(facesContext, picker);
   }
 
   @Override
   public void encodeBegin(FacesContext facesContext, UIComponent component) throws IOException {
     UIDatePicker picker = (UIDatePicker) component;
     UIDate dateInput = (UIDate) picker.getForComponent();
     if (dateInput == null) {
       LOG.error("The required UIDate component wasn't found for component id='" + component.getId());
       return;
     }
     // this can't be done in "onComponentPopulated()" of the picker, it seems to be to early
     final ValueExpression readonlyExpression = dateInput.getValueExpression(Attributes.READONLY);
     if (readonlyExpression != null) {
       picker.setValueExpression(Attributes.DISABLED, readonlyExpression);
     } else {
       final ValueExpression disabledExpression = dateInput.getValueExpression(Attributes.DISABLED);
       if (disabledExpression != null) {
         picker.setValueExpression(Attributes.DISABLED, disabledExpression);
       } else {
         picker.setDisabled(dateInput.isReadonly() || dateInput.isDisabled());
       }
     }
     UIPopup popup = (UIPopup) picker.getFacets().get(Facets.POPUP);
     picker.setRenderedPartially(new String[] {popup.getId()});
     Converter converter = getConverter(facesContext, dateInput);
     String converterPattern = "yyyy-MM-dd"; // from tobago-calendar.js  initCalendarParse
     if (converter instanceof DateTimeConverter) {
       converterPattern = DateFormatUtils.findPattern((DateTimeConverter) converter);
     } else {
       // LOG.warn("Converter for DateRenderer is not instance of DateTimeConverter. Using default Pattern "
       //    + converterPattern);
     }
 
     applyConverterPattern(facesContext, popup, converterPattern);
 
     if (!ComponentUtils.containsPopupActionListener(picker)) {
       picker.addActionListener(new PopupActionListener(popup.getId()));
     }
     super.encodeBegin(facesContext, component);
   }
 
   private void applyConverterPattern(FacesContext facesContext, UIPopup popup, String converterPattern) {
     UIComponent box = popup.getChildren().get(0);
     UIComponent timePanel = box.findComponent("timePanel");
     if (converterPattern != null && (converterPattern.indexOf('h') > -1 || converterPattern.indexOf('H') > -1)) {
       UITime time = (UITime) timePanel.findComponent("time");
       DateTimeConverter dateTimeConverter
           = (DateTimeConverter) facesContext.getApplication().createConverter(DateTimeConverter.CONVERTER_ID);
       if (converterPattern.indexOf('s') > -1) {
         dateTimeConverter.setPattern("HH:mm:ss");
       } else {
         dateTimeConverter.setPattern("HH:mm");
       }
       dateTimeConverter.setTimeZone(TimeZone.getDefault());
       time.setConverter(dateTimeConverter);
     } else {
       timePanel.setRendered(false);
     }
   }
 
   @Override
   public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException {
     UIDatePicker link = (UIDatePicker) component;
     UIDate dateInput = (UIDate) link.getForComponent();
     if (dateInput != null) {
       super.encodeEnd(facesContext, component);
     } else {
       LOG.error("The required UIDate component wasn't found for component id='" + component.getId());
     }
   }
 }