/*
    * 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.atlas.ui.controls;
  
  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.moneywise.atlas.data.analysis.buckets.MoneyWiseXAnalysis;
  import io.github.tonywasher.joceanus.moneywise.atlas.data.analysis.buckets.MoneyWiseXAnalysisBucketResource;
  import io.github.tonywasher.joceanus.moneywise.atlas.data.analysis.buckets.MoneyWiseXAnalysisTaxBasisAccountBucket;
  import io.github.tonywasher.joceanus.moneywise.atlas.data.analysis.buckets.MoneyWiseXAnalysisTaxBasisBucket;
  import io.github.tonywasher.joceanus.moneywise.atlas.data.analysis.buckets.MoneyWiseXAnalysisTaxBasisBucket.MoneyWiseXAnalysisTaxBasisBucketList;
  import io.github.tonywasher.joceanus.moneywise.atlas.views.MoneyWiseXAnalysisFilter;
  import io.github.tonywasher.joceanus.moneywise.atlas.views.MoneyWiseXAnalysisFilter.MoneyWiseXAnalysisTaxBasisFilter;
  import io.github.tonywasher.joceanus.moneywise.data.statics.MoneyWiseStaticDataType;
  import io.github.tonywasher.joceanus.prometheus.views.PrometheusDataEvent;
  import io.github.tonywasher.joceanus.tethys.api.base.TethysUIComponent;
  import io.github.tonywasher.joceanus.tethys.api.base.TethysUIConstant;
  import io.github.tonywasher.joceanus.tethys.api.base.TethysUIEvent;
  import io.github.tonywasher.joceanus.tethys.api.button.TethysUIButtonFactory;
  import io.github.tonywasher.joceanus.tethys.api.button.TethysUIScrollButtonManager;
  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.menu.TethysUIScrollItem;
  import io.github.tonywasher.joceanus.tethys.api.menu.TethysUIScrollMenu;
  import io.github.tonywasher.joceanus.tethys.api.pane.TethysUIBoxPaneManager;
  
  import java.util.Iterator;
  
  /**
   * TaxBasisAnalysis Selection.
   */
  public class MoneyWiseXTaxBasisAnalysisSelect
          implements MoneyWiseXAnalysisFilterSelection, OceanusEventProvider<PrometheusDataEvent> {
      /**
       * Text for TaxBasis Label.
       */
      private static final String NLS_BASIS = MoneyWiseStaticDataType.TAXBASIS.getItemName();
  
      /**
       * Text for Account Label.
       */
      private static final String NLS_ACCOUNT = MoneyWiseXAnalysisBucketResource.BUCKET_ACCOUNT.getValue();
  
      /**
       * Text for All Item.
       */
      private static final String NLS_ALL = "All";
  
      /**
       * The Event Manager.
       */
      private final OceanusEventManager<PrometheusDataEvent> theEventManager;
  
      /**
       * The panel.
       */
      private final TethysUIBoxPaneManager thePanel;
  
      /**
       * The basis button.
       */
      private final TethysUIScrollButtonManager<MoneyWiseXAnalysisTaxBasisBucket> theBasisButton;
  
      /**
       * The account button.
       */
      private final TethysUIScrollButtonManager<MoneyWiseXAnalysisTaxBasisAccountBucket> theAccountButton;
  
      /**
       * Tax menu.
       */
      private final TethysUIScrollMenu<MoneyWiseXAnalysisTaxBasisBucket> theTaxMenu;
  
      /**
       * Account menu.
       */
      private final TethysUIScrollMenu<MoneyWiseXAnalysisTaxBasisAccountBucket> theAccountMenu;
  
      /**
       * The active tax basis bucket list.
       */
     private MoneyWiseXAnalysisTaxBasisBucketList theTaxBases;
 
     /**
      * The state.
      */
     private MoneyWiseTaxBasisState theState;
 
     /**
      * The savePoint.
      */
     private MoneyWiseTaxBasisState theSavePoint;
 
     /**
      * Constructor.
      *
      * @param pFactory the GUI factory
      */
     protected MoneyWiseXTaxBasisAnalysisSelect(final TethysUIFactory<?> pFactory) {
         /* Create the buttons */
         final TethysUIButtonFactory<?> myButtons = pFactory.buttonFactory();
         theBasisButton = myButtons.newScrollButton(MoneyWiseXAnalysisTaxBasisBucket.class);
         theAccountButton = myButtons.newScrollButton(MoneyWiseXAnalysisTaxBasisAccountBucket.class);
 
         /* Create Event Manager */
         theEventManager = new OceanusEventManager<>();
 
         /* Create the labels */
         final TethysUIControlFactory myControls = pFactory.controlFactory();
         final TethysUILabel myBasisLabel = myControls.newLabel(NLS_BASIS + TethysUIConstant.STR_COLON);
         final TethysUILabel myAccountLabel = myControls.newLabel(NLS_ACCOUNT + TethysUIConstant.STR_COLON);
 
         /* Define the layout */
         thePanel = pFactory.paneFactory().newHBoxPane();
         thePanel.addSpacer();
         thePanel.addNode(myBasisLabel);
         thePanel.addNode(theBasisButton);
         thePanel.addStrut();
         thePanel.addNode(myAccountLabel);
         thePanel.addNode(theAccountButton);
 
         /* Create initial state */
         theState = new MoneyWiseTaxBasisState();
         theState.applyState();
 
         /* Access the menus */
         theTaxMenu = theBasisButton.getMenu();
         theAccountMenu = theAccountButton.getMenu();
 
         /* Create the listener */
         OceanusEventRegistrar<TethysUIEvent> myRegistrar = theBasisButton.getEventRegistrar();
         myRegistrar.addEventListener(TethysUIEvent.NEWVALUE, e -> handleNewBasis());
         theBasisButton.setMenuConfigurator(e -> buildBasisMenu());
         myRegistrar = theAccountButton.getEventRegistrar();
         myRegistrar.addEventListener(TethysUIEvent.NEWVALUE, e -> handleNewAccount());
         theAccountButton.setMenuConfigurator(e -> buildAccountMenu());
     }
 
     @Override
     public TethysUIComponent getUnderlying() {
         return thePanel;
     }
 
     @Override
     public OceanusEventRegistrar<PrometheusDataEvent> getEventRegistrar() {
         return theEventManager.getEventRegistrar();
     }
 
     @Override
     public MoneyWiseXAnalysisTaxBasisFilter getFilter() {
         return theState.getFilter();
     }
 
     @Override
     public boolean isAvailable() {
         return theTaxBases != null
                 && !theTaxBases.isEmpty();
     }
 
     /**
      * Create SavePoint.
      */
     public void createSavePoint() {
         /* Create the savePoint */
         theSavePoint = new MoneyWiseTaxBasisState(theState);
     }
 
     /**
      * Restore SavePoint.
      */
     public void restoreSavePoint() {
         /* Restore the savePoint */
         theState = new MoneyWiseTaxBasisState(theSavePoint);
 
         /* Apply the state */
         theState.applyState();
     }
 
     @Override
     public void setEnabled(final boolean bEnabled) {
         /* Pass call on to basis button */
         theBasisButton.setEnabled(bEnabled && isAvailable());
     }
 
     @Override
     public void setVisible(final boolean pVisible) {
         thePanel.setVisible(pVisible);
     }
 
     /**
      * Set analysis.
      *
      * @param pAnalysis the analysis.
      */
     public void setAnalysis(final MoneyWiseXAnalysis pAnalysis) {
         /* Access buckets */
         theTaxBases = pAnalysis.getTaxBasis();
 
         /* Obtain the current basis */
         MoneyWiseXAnalysisTaxBasisBucket myBasis = theState.getTaxBasis();
 
         /* Switch to versions from the analysis */
         myBasis = myBasis != null
                 ? theTaxBases.getMatchingBasis(myBasis)
                 : theTaxBases.getDefaultBasis();
 
         /* Set the basis */
         theState.setTheTaxBasis(myBasis);
         theState.setDateRange(pAnalysis.getDateRange());
         theState.applyState();
     }
 
     @Override
     public void setFilter(final MoneyWiseXAnalysisFilter<?, ?> pFilter) {
         /* If this is the correct filter type */
         if (pFilter instanceof MoneyWiseXAnalysisTaxBasisFilter myFilter) {
             /* Obtain the filter bucket */
             MoneyWiseXAnalysisTaxBasisBucket myTaxBasis = myFilter.getBucket();
 
             /* Obtain equivalent bucket */
             myTaxBasis = theTaxBases.getMatchingBasis(myTaxBasis);
 
             /* Set the taxBasis */
             theState.setTheTaxBasis(myTaxBasis);
             theState.setDateRange(myFilter.getDateRange());
             theState.applyState();
         }
     }
 
     /**
      * Handle new Basis.
      */
     private void handleNewBasis() {
         /* Select the new taxBasis */
         if (theState.setTaxBasis(theBasisButton.getValue())) {
             theState.applyState();
             theEventManager.fireEvent(PrometheusDataEvent.SELECTIONCHANGED);
         }
     }
 
     /**
      * Handle new Account.
      */
     private void handleNewAccount() {
         /* Select the new account */
         if (theState.setTaxBasis(theAccountButton.getValue())) {
             theState.applyState();
             theEventManager.fireEvent(PrometheusDataEvent.SELECTIONCHANGED);
         }
     }
 
     /**
      * Build Basis menu.
      */
     private void buildBasisMenu() {
         /* Reset the popUp menu */
         theTaxMenu.removeAllItems();
 
         /* Record active item */
         TethysUIScrollItem<MoneyWiseXAnalysisTaxBasisBucket> myActive = null;
         final MoneyWiseXAnalysisTaxBasisBucket myCurr = theState.getTaxBasis();
 
         /* Loop through the available basis values */
         final Iterator<MoneyWiseXAnalysisTaxBasisBucket> myIterator = theTaxBases.iterator();
         while (myIterator.hasNext()) {
             final MoneyWiseXAnalysisTaxBasisBucket myBucket = myIterator.next();
 
             /* Create a new MenuItem and add it to the popUp */
             final TethysUIScrollItem<MoneyWiseXAnalysisTaxBasisBucket> myItem = theTaxMenu.addItem(myBucket);
 
             /* If this is the active bucket */
             if (myBucket.equals(myCurr)) {
                 /* Record it */
                 myActive = myItem;
             }
         }
 
         /* Ensure active item is visible */
         if (myActive != null) {
             myActive.scrollToItem();
         }
     }
 
     /**
      * Build Account menu.
      */
     private void buildAccountMenu() {
         /* Reset the popUp menu */
         theAccountMenu.removeAllItems();
 
         /* Record active item */
         final MoneyWiseXAnalysisTaxBasisBucket myBasis = theState.getTaxBasis();
         final MoneyWiseXAnalysisTaxBasisAccountBucket myCurr = theState.getAccount();
 
         /* Add the all item menu */
         TethysUIScrollItem<MoneyWiseXAnalysisTaxBasisAccountBucket> myActive = theAccountMenu.addItem(null, NLS_ALL);
 
         /* Loop through the available account values */
         final Iterator<MoneyWiseXAnalysisTaxBasisAccountBucket> myIterator = myBasis.accountIterator();
         while (myIterator.hasNext()) {
             final MoneyWiseXAnalysisTaxBasisAccountBucket myBucket = myIterator.next();
 
             /* Create a new MenuItem and add it to the popUp */
             final TethysUIScrollItem<MoneyWiseXAnalysisTaxBasisAccountBucket> myItem = theAccountMenu.addItem(myBucket, myBucket.getSimpleName());
 
             /* If this is the active bucket */
             if (myBucket.equals(myCurr)) {
                 /* Record it */
                 myActive = myItem;
             }
         }
 
         /* Ensure active item is visible */
         if (myActive != null) {
             myActive.scrollToItem();
         }
     }
 
     /**
      * SavePoint values.
      */
     private final class MoneyWiseTaxBasisState {
         /**
          * The active TaxBasisBucket.
          */
         private MoneyWiseXAnalysisTaxBasisBucket theBasis;
 
         /**
          * The account TaxBasisBucket.
          */
         private MoneyWiseXAnalysisTaxBasisAccountBucket theAccount;
 
         /**
          * The dateRange.
          */
         private OceanusDateRange theDateRange;
 
         /**
          * The active filter.
          */
         private MoneyWiseXAnalysisTaxBasisFilter theFilter;
 
         /**
          * Constructor.
          */
         private MoneyWiseTaxBasisState() {
         }
 
         /**
          * Constructor.
          *
          * @param pState state to copy from
          */
         private MoneyWiseTaxBasisState(final MoneyWiseTaxBasisState pState) {
             /* Initialise state */
             theBasis = pState.getTaxBasis();
             theAccount = pState.getAccount();
             theDateRange = pState.getDateRange();
             theFilter = pState.getFilter();
         }
 
         /**
          * Obtain the TaxBasis Bucket.
          *
          * @return the Basis
          */
         private MoneyWiseXAnalysisTaxBasisBucket getTaxBasis() {
             return theBasis;
         }
 
         /**
          * Obtain the Account Bucket.
          *
          * @return the Account
          */
         private MoneyWiseXAnalysisTaxBasisAccountBucket getAccount() {
             return theAccount;
         }
 
         /**
          * Obtain the dateRange.
          *
          * @return the dateRange
          */
         private OceanusDateRange getDateRange() {
             return theDateRange;
         }
 
         /**
          * Obtain the Filter.
          *
          * @return the Filter
          */
         private MoneyWiseXAnalysisTaxBasisFilter getFilter() {
             return theFilter;
         }
 
         /**
          * Set new TaxBasis.
          *
          * @param pTaxBasis the TaxBasis
          * @return true/false did a change occur
          */
         private boolean setTaxBasis(final MoneyWiseXAnalysisTaxBasisBucket pTaxBasis) {
             /* Adjust the selected taxBasis */
             if (!MetisDataDifference.isEqual(pTaxBasis, theBasis)) {
                 setTheTaxBasis(pTaxBasis);
                 return true;
             }
             return false;
         }
 
         /**
          * Set the TaxBasis.
          *
          * @param pTaxBasis the TaxBasis
          */
         private void setTheTaxBasis(final MoneyWiseXAnalysisTaxBasisBucket pTaxBasis) {
             /* Adjust the selected taxBasis */
             if (pTaxBasis instanceof MoneyWiseXAnalysisTaxBasisAccountBucket myBucket) {
                 theAccount = myBucket;
                 theBasis = theAccount.getParent();
                 theFilter = new MoneyWiseXAnalysisTaxBasisFilter(theAccount);
                 theFilter.setDateRange(theDateRange);
             } else {
                 theAccount = null;
                 theBasis = pTaxBasis;
                 if (theBasis != null) {
                     theFilter = new MoneyWiseXAnalysisTaxBasisFilter(theBasis);
                     theFilter.setDateRange(theDateRange);
                 } else {
                     theFilter = null;
                 }
             }
         }
 
         /**
          * Set the dateRange.
          *
          * @param pRange the dateRange
          */
         private void setDateRange(final OceanusDateRange pRange) {
             /* Store the dateRange */
             theDateRange = pRange;
             if (theFilter != null) {
                 theFilter.setDateRange(theDateRange);
             }
         }
 
         /**
          * Apply the State.
          */
         private void applyState() {
             /* Adjust the lock-down */
             setEnabled(true);
             theBasisButton.setValue(theBasis);
             if (theAccount == null) {
                 theAccountButton.setValue(null, NLS_ALL);
             } else {
                 theAccountButton.setValue(theAccount, theAccount.getSimpleName());
             }
             theAccountButton.setEnabled((theBasis != null) && theBasis.hasAccounts());
         }
     }
 }