/*
    * MoneyWise: Finance Application
    * Copyright 2012-2026. Tony Washer
    *
    * Licensed 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 io.github.tonywasher.joceanus.moneywise.ui.controls;
  
  import io.github.tonywasher.joceanus.oceanus.date.OceanusDate;
  import io.github.tonywasher.joceanus.oceanus.date.OceanusDateRange;
  import io.github.tonywasher.joceanus.oceanus.event.OceanusEventManager;
  import io.github.tonywasher.joceanus.oceanus.event.OceanusEventRegistrar;
  import io.github.tonywasher.joceanus.oceanus.event.OceanusEventRegistrar.OceanusEventProvider;
  import io.github.tonywasher.joceanus.metis.data.MetisDataDifference;
  import io.github.tonywasher.joceanus.metis.ui.MetisIcon;
  import io.github.tonywasher.joceanus.moneywise.data.basic.MoneyWiseDataSet;
  import io.github.tonywasher.joceanus.moneywise.data.statics.MoneyWiseCurrency;
  import io.github.tonywasher.joceanus.moneywise.ui.MoneyWiseUIResource;
  import io.github.tonywasher.joceanus.moneywise.views.MoneyWiseView;
  import io.github.tonywasher.joceanus.prometheus.views.PrometheusDataEvent;
  import io.github.tonywasher.joceanus.tethys.api.base.TethysUIArrowIconId;
  import io.github.tonywasher.joceanus.tethys.api.base.TethysUIComponent;
  import io.github.tonywasher.joceanus.tethys.api.base.TethysUIEvent;
  import io.github.tonywasher.joceanus.tethys.api.button.TethysUIButton;
  import io.github.tonywasher.joceanus.tethys.api.button.TethysUIButtonFactory;
  import io.github.tonywasher.joceanus.tethys.api.button.TethysUIDateButtonManager;
  import io.github.tonywasher.joceanus.tethys.api.control.TethysUIControlFactory;
  import io.github.tonywasher.joceanus.tethys.api.control.TethysUILabel;
  import io.github.tonywasher.joceanus.tethys.api.factory.TethysUIFactory;
  import io.github.tonywasher.joceanus.tethys.api.pane.TethysUIBoxPaneManager;
  
  /**
   * SpotRates selection panel.
   */
  public class MoneyWiseSpotRatesSelect
          implements OceanusEventProvider<PrometheusDataEvent>, TethysUIComponent {
      /**
       * Text for Currency Prompt.
       */
      private static final String NLS_CURRENCY = MoneyWiseUIResource.SPOTRATE_PROMPT_CURR.getValue();
  
      /**
       * Text for Date Label.
       */
      private static final String NLS_DATE = MoneyWiseUIResource.SPOTEVENT_DATE.getValue();
  
      /**
       * Text for Title.
       */
      private static final String NLS_TITLE = MoneyWiseUIResource.SPOTRATE_TITLE.getValue();
  
      /**
       * Text for Next toolTip.
       */
      private static final String NLS_NEXTTIP = MoneyWiseUIResource.SPOTRATE_NEXT.getValue();
  
      /**
       * Text for Previous toolTip.
       */
      private static final String NLS_PREVTIP = MoneyWiseUIResource.SPOTRATE_PREV.getValue();
  
      /**
       * The Event Manager.
       */
      private final OceanusEventManager<PrometheusDataEvent> theEventManager;
  
      /**
       * The panel.
       */
      private final TethysUIBoxPaneManager thePanel;
  
      /**
       * The data view.
       */
      private final MoneyWiseView theView;
  
      /**
       * The currency label.
       */
      private final TethysUILabel theCurrLabel;
  
      /**
       * The date button.
       */
      private final TethysUIDateButtonManager theDateButton;
  
      /**
       * The next button.
       */
     private final TethysUIButton theNext;
 
     /**
      * The previous button.
      */
     private final TethysUIButton thePrev;
 
     /**
      * The download button.
      */
     private final TethysUIButton theDownloadButton;
 
     /**
      * The current state.
      */
     private MoneyWiseSpotRatesState theState;
 
     /**
      * The saved state.
      */
     private MoneyWiseSpotRatesState theSavePoint;
 
     /**
      * Constructor.
      *
      * @param pFactory the GUI factory
      * @param pView    the data view
      */
     public MoneyWiseSpotRatesSelect(final TethysUIFactory<?> pFactory,
                                     final MoneyWiseView pView) {
         /* Store table and view details */
         theView = pView;
 
         /* Create Event Manager */
         theEventManager = new OceanusEventManager<>();
 
         /* Create Labels */
         final TethysUIControlFactory myControls = pFactory.controlFactory();
         final TethysUILabel myCurr = myControls.newLabel(NLS_CURRENCY);
         final TethysUILabel myDate = myControls.newLabel(NLS_DATE);
 
         /* Create the DateButton */
         final TethysUIButtonFactory<?> myButtons = pFactory.buttonFactory();
         theDateButton = myButtons.newDateButton();
 
         /* Create the Download Button */
         theDownloadButton = myButtons.newButton();
         MetisIcon.configureDownloadIconButton(theDownloadButton);
 
         /* Create the Currency indication */
         theCurrLabel = myControls.newLabel();
 
         /* Create the Buttons */
         theNext = myButtons.newButton();
         theNext.setIcon(TethysUIArrowIconId.RIGHT);
         theNext.setToolTip(NLS_NEXTTIP);
         thePrev = myButtons.newButton();
         thePrev.setIcon(TethysUIArrowIconId.LEFT);
         thePrev.setToolTip(NLS_PREVTIP);
 
         /* Create initial state */
         theState = new MoneyWiseSpotRatesState();
 
         /* Create the panel */
         thePanel = pFactory.paneFactory().newHBoxPane();
         thePanel.setBorderTitle(NLS_TITLE);
 
         /* Define the layout */
         thePanel.addNode(myCurr);
         thePanel.addNode(theCurrLabel);
         thePanel.addSpacer();
         thePanel.addNode(myDate);
         thePanel.addNode(thePrev);
         thePanel.addNode(theDateButton);
         thePanel.addNode(theNext);
         thePanel.addSpacer();
         thePanel.addNode(theDownloadButton);
 
         /* Initialise the data from the view */
         refreshData();
 
         /* Apply the current state */
         theState.applyState();
 
         /* Add the listeners */
         theDateButton.getEventRegistrar().addEventListener(TethysUIEvent.NEWVALUE, e -> handleNewDate());
         theDownloadButton.getEventRegistrar().addEventListener(TethysUIEvent.PRESSED, e -> theEventManager.fireEvent(PrometheusDataEvent.DOWNLOAD));
         theNext.getEventRegistrar().addEventListener(e -> {
             theState.setNext();
             theEventManager.fireEvent(PrometheusDataEvent.SELECTIONCHANGED);
         });
         thePrev.getEventRegistrar().addEventListener(e -> {
             theState.setPrev();
             theEventManager.fireEvent(PrometheusDataEvent.SELECTIONCHANGED);
         });
     }
 
     @Override
     public TethysUIComponent getUnderlying() {
         return thePanel;
     }
 
     @Override
     public OceanusEventRegistrar<PrometheusDataEvent> getEventRegistrar() {
         return theEventManager.getEventRegistrar();
     }
 
     /**
      * Get the selected date.
      *
      * @return the date
      */
     public OceanusDate getDate() {
         return theState.getDate();
     }
 
     /**
      * Refresh data.
      */
     public final void refreshData() {
         /* Access the data */
         final OceanusDateRange myRange = theView.getRange();
 
         /* Set the range for the Date Button */
         setRange(myRange);
 
         /* Set the currency name */
         final MoneyWiseDataSet myData = theView.getData();
         final MoneyWiseCurrency myDefault = myData.getReportingCurrency();
         theCurrLabel.setText(myDefault != null
                 ? myDefault.getDesc() + " (" + myDefault.getName() + ")"
                 : null);
     }
 
     /**
      * Set the range for the date box.
      *
      * @param pRange the Range to set
      */
     private void setRange(final OceanusDateRange pRange) {
         final OceanusDate myStart = (pRange == null)
                 ? null
                 : pRange.getStart();
         final OceanusDate myEnd = (pRange == null)
                 ? null
                 : pRange.getEnd();
 
         /* Set up range */
         theDateButton.setEarliestDate(myStart);
         theDateButton.setLatestDate(myEnd);
     }
 
     @Override
     public void setEnabled(final boolean bEnabled) {
         theNext.setEnabled(bEnabled && (theState.getNextDate() != null));
         thePrev.setEnabled(bEnabled && (theState.getPrevDate() != null));
         theDateButton.setEnabled(bEnabled);
         theDownloadButton.setEnabled(bEnabled);
     }
 
     @Override
     public void setVisible(final boolean pVisible) {
         thePanel.setVisible(pVisible);
     }
 
     /**
      * Create SavePoint.
      */
     public void createSavePoint() {
         /* Create the savePoint */
         theSavePoint = new MoneyWiseSpotRatesState(theState);
     }
 
     /**
      * Restore SavePoint.
      */
     public void restoreSavePoint() {
         /* Restore the savePoint */
         theState = new MoneyWiseSpotRatesState(theSavePoint);
 
         /* Apply the state */
         theState.applyState();
     }
 
     /**
      * Set Adjacent dates.
      *
      * @param pPrev the previous Date
      * @param pNext the next Date
      */
     public void setAdjacent(final OceanusDate pPrev,
                             final OceanusDate pNext) {
         /* Record the dates */
         theState.setAdjacent(pPrev, pNext);
     }
 
     /**
      * Handle new Date.
      */
     private void handleNewDate() {
         /* Select the new date */
         if (theState.setDate(theDateButton)) {
             theEventManager.fireEvent(PrometheusDataEvent.SELECTIONCHANGED);
         }
     }
 
     /**
      * SavePoint values.
      */
     private final class MoneyWiseSpotRatesState {
         /**
          * Selected date.
          */
         private OceanusDate theDate;
 
         /**
          * Next date.
          */
         private OceanusDate theNextDate;
 
         /**
          * Previous date.
          */
         private OceanusDate thePrevDate;
 
         /**
          * Constructor.
          */
         private MoneyWiseSpotRatesState() {
             theDate = new OceanusDate();
         }
 
         /**
          * Constructor.
          *
          * @param pState state to copy from
          */
         private MoneyWiseSpotRatesState(final MoneyWiseSpotRatesState pState) {
             theDate = new OceanusDate(pState.getDate());
             if (pState.getNextDate() != null) {
                 theNextDate = new OceanusDate(pState.getNextDate());
             }
             if (pState.getPrevDate() != null) {
                 thePrevDate = new OceanusDate(pState.getPrevDate());
             }
         }
 
         /**
          * Get the selected date.
          *
          * @return the date
          */
         private OceanusDate getDate() {
             return theDate;
         }
 
         /**
          * Get the next date.
          *
          * @return the date
          */
         private OceanusDate getNextDate() {
             return theNextDate;
         }
 
         /**
          * Get the previous date.
          *
          * @return the date
          */
         private OceanusDate getPrevDate() {
             return thePrevDate;
         }
 
         /**
          * Set new Date.
          *
          * @param pButton the Button with the new date
          * @return true/false did a change occur
          */
         private boolean setDate(final TethysUIDateButtonManager pButton) {
             /* Adjust the date and build the new range */
             final OceanusDate myDate = new OceanusDate(pButton.getSelectedDate());
             if (!MetisDataDifference.isEqual(myDate, theDate)) {
                 theDate = myDate;
                 return true;
             }
             return false;
         }
 
         /**
          * Set Next Date.
          */
         private void setNext() {
             /* Copy date */
             theDate = new OceanusDate(theNextDate);
             applyState();
         }
 
         /**
          * Set Previous Date.
          */
         private void setPrev() {
             /* Copy date */
             theDate = new OceanusDate(thePrevDate);
             applyState();
         }
 
         /**
          * Set Adjacent dates.
          *
          * @param pPrev the previous Date
          * @param pNext the next Date
          */
         private void setAdjacent(final OceanusDate pPrev,
                                  final OceanusDate pNext) {
             /* Record the dates */
             thePrevDate = pPrev;
             theNextDate = pNext;
 
             /* Adjust values */
             setEnabled(true);
         }
 
         /**
          * Apply the State.
          */
         private void applyState() {
             /* Adjust the lock-down */
             setEnabled(true);
             theDateButton.setSelectedDate(theDate);
 
             /* Determine whether we are todays date */
             final boolean isToday = MetisDataDifference.isEqual(theDate, new OceanusDate());
             theDownloadButton.setVisible(isToday);
         }
     }
 }