package com.jsql.view.swing.tree;
   
   import com.jsql.model.bean.database.AbstractElementDatabase;
   import com.jsql.model.bean.database.Column;
   import com.jsql.model.bean.database.Database;
   import com.jsql.model.bean.database.Table;
   import com.jsql.util.LogLevelUtil;
   import com.jsql.view.swing.tree.model.AbstractNodeModel;
   import com.jsql.view.swing.tree.model.NodeModelColumn;
  import com.jsql.view.swing.tree.model.NodeModelDatabase;
  import com.jsql.view.swing.tree.model.NodeModelTable;
  import com.jsql.view.swing.util.MediatorHelper;
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  
  import javax.swing.*;
  import javax.swing.tree.DefaultMutableTreeNode;
  import javax.swing.tree.DefaultTreeModel;
  import javax.swing.tree.TreePath;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  public class TreeDatabase extends JTree {
      
      private static final Logger LOGGER = LogManager.getRootLogger();
  
      /**
       * Map a database element with the corresponding tree node.<br>
       * The injection model sends a database element to the view, then
       * the view accesses its graphic component for update.
       */
      private final transient Map<AbstractElementDatabase, DefaultMutableTreeNode> mapNodes = new HashMap<>();
  
      public TreeDatabase(DefaultMutableTreeNode root) {
          super(root);
      }
      
      public void reloadNodes() {
          if (this.isRootVisible()) {  // I18n of tree empty node
              DefaultTreeModel model = (DefaultTreeModel) this.getModel();
              DefaultMutableTreeNode root = (DefaultMutableTreeNode) model.getRoot();
              model.reload(root);
              this.revalidate();
          }
      }
  
      public void reset() {
          this.getTreeNodeModels().clear();
  
          DefaultTreeModel treeModel = (DefaultTreeModel) this.getModel();  // Tree model for refreshing the tree
          DefaultMutableTreeNode root = (DefaultMutableTreeNode) treeModel.getRoot();  // The tree root
  
          root.removeAllChildren();  // Remove tree nodes
          treeModel.nodeChanged(root);  // Refresh the root
          treeModel.reload();  // Refresh the tree
          
          this.setRootVisible(true);
      }
      
      public void addColumns(List<Column> columns) {
          DefaultTreeModel treeModel = (DefaultTreeModel) this.getModel();
          DefaultMutableTreeNode tableNode = null;  // The table to update
  
          // Loop into the list of columns
          for (Column column: columns) {
              AbstractNodeModel newTreeNodeModel = new NodeModelColumn(column);  // Create a node model with the column element
              var newNode = new DefaultMutableTreeNode(newTreeNodeModel);  // Create the node
              tableNode = this.getTreeNodeModels().get(column.getParent());  // Get the parent table
              
              // Fix #1805 : NullPointerException on tableNode.getChildCount()
              if (tableNode != null) {
                  treeModel.insertNodeInto(newNode, tableNode, tableNode.getChildCount());  // Add the column to the table
              }
          }
  
          if (tableNode != null) {
              this.expandPath(new TreePath(tableNode.getPath()));  // Open the table node
              ((AbstractNodeModel) tableNode.getUserObject()).setLoaded(true);  // The table has just been search (avoid double check)
          }
      }
      
      public void addDatabases(List<Database> databases) {
          DefaultTreeModel treeModel = (DefaultTreeModel) this.getModel();
          DefaultMutableTreeNode root = (DefaultMutableTreeNode) treeModel.getRoot();  // First node in tree
  
          // Loop into the list of databases
          for (Database database: databases) {
              AbstractNodeModel newTreeNodeModel = new NodeModelDatabase(database);  // Create a node model with the database element
              var newNode = new DefaultMutableTreeNode(newTreeNodeModel);  // Create the node
              this.getTreeNodeModels().put(database, newNode);  // Save the node
              root.add(newNode);  // Add the node to the tree
          }
  
          // Refresh the tree
          treeModel.reload(root);
          
          // Open the root node
          this.expandPath(new TreePath(root.getPath()));
         this.setRootVisible(false);
     }
     
     public void addTables(List<Table> tables) {
         DefaultMutableTreeNode databaseNode = null;  // The database to update
 
         for (Table table: tables) {
             AbstractNodeModel newTreeNodeModel = new NodeModelTable(table);  // Create a node model with the table element
             var newNode = new DefaultMutableTreeNode(newTreeNodeModel);  // Create the node
             this.getTreeNodeModels().put(table, newNode);  // Save the node
             databaseNode = this.getTreeNodeModels().get(table.getParent());
 
             // Report NullPointerException #1670
             if (databaseNode != null) {
                 DefaultTreeModel treeModel = (DefaultTreeModel) this.getModel();
                 treeModel.insertNodeInto(newNode, databaseNode, databaseNode.getChildCount());  // Add the table to the database
             } else {
                 LOGGER.log(LogLevelUtil.CONSOLE_ERROR, "Missing database for table {}.", () -> table);
             }
         }
 
         if (databaseNode != null) {
             this.expandPath(new TreePath(databaseNode.getPath()));  // Open the database node
             ((AbstractNodeModel) databaseNode.getUserObject()).setLoaded(true);  // The database has just been search (avoid double check)
         }
     }
     
     public void createValuesTab(String[][] data, String[] columnNames, AbstractElementDatabase table) {
         // Report NullPointerException #1683
         DefaultMutableTreeNode node = this.getTreeNodeModels().get(table);
         if (node != null) {
             AbstractNodeModel progressingTreeNodeModel = (AbstractNodeModel) node.getUserObject();
             progressingTreeNodeModel.setIndexProgress(table.getChildCount());  // Update the progress value of the model, end the progress
             progressingTreeNodeModel.setRunning(false);  // Mark the node model as 'no stop/pause/resume button'
             MediatorHelper.tabResults().addTabValues(data, columnNames, table);
         }
     }
     
     public void endIndeterminateProgress(AbstractElementDatabase dataElementDatabase) {
         DefaultMutableTreeNode node = this.getTreeNodeModels().get(dataElementDatabase);
         // Fix #1806 : NullPointerException on ...odels().get(dataElementDatabase).getUserObject()
         if (node != null) {
             AbstractNodeModel progressingTreeNodeModel = (AbstractNodeModel) node.getUserObject();
             progressingTreeNodeModel.setProgressing(false);  // Mark the node model as 'no loading bar'
             progressingTreeNodeModel.setRunning(false);  // Mark the node model as 'no stop/pause/resume button'
             DefaultTreeModel treeModel = (DefaultTreeModel) this.getModel();
             treeModel.nodeChanged(node);  // Update the node
         }
     }
     
     public void endProgress(AbstractElementDatabase dataElementDatabase) {
         // Report NullPointerException #1671
         DefaultMutableTreeNode node = this.getTreeNodeModels().get(dataElementDatabase);
         if (node != null) {
             AbstractNodeModel progressingTreeNodeModel = (AbstractNodeModel) node.getUserObject();
             progressingTreeNodeModel.setLoading(false);  // Mark the node model as 'no progress bar'
             progressingTreeNodeModel.setRunning(false);  // Mark the node model as 'no stop/pause/resume button'
             progressingTreeNodeModel.setIndexProgress(0);  // Reset the progress value of the model
             DefaultTreeModel treeModel = (DefaultTreeModel) this.getModel();
             treeModel.nodeChanged(node);  // Update the node and progress bar
         }
     }
     
     public void startIndeterminateProgress(AbstractElementDatabase dataElementDatabase) {
         DefaultMutableTreeNode node = this.getTreeNodeModels().get(dataElementDatabase);
         // Fix #45540: NullPointerException on node.getUserObject()
         if (node != null) {
             AbstractNodeModel progressingTreeNodeModel = (AbstractNodeModel) node.getUserObject();
             progressingTreeNodeModel.setProgressing(true);  // Mark the node model as 'loading'
             DefaultTreeModel treeModel = (DefaultTreeModel) this.getModel();
             treeModel.nodeChanged(node);  // Update the node
         }
     }
     
     public void startProgress(AbstractElementDatabase dataElementDatabase) {
         DefaultMutableTreeNode node = this.getTreeNodeModels().get(dataElementDatabase);
         // Fix rare #73981
         if (node != null) {
             AbstractNodeModel progressingTreeNodeModel = (AbstractNodeModel) node.getUserObject();
             // Fix rare Unhandled NullPointerException #66340
             if (progressingTreeNodeModel != null) {
                 progressingTreeNodeModel.setLoading(true);  // Mark the node model as 'display progress bar'
             }
             DefaultTreeModel treeModel = (DefaultTreeModel) this.getModel();
             treeModel.nodeChanged(node);  // Update the node
         }
     }
     
     public void updateProgress(AbstractElementDatabase dataElementDatabase, int dataCount) {
         DefaultMutableTreeNode node = this.getTreeNodeModels().get(dataElementDatabase);
         // Fix Report #1368: ignore if no element database, usually for mock (e.g. metadata, file, shell, list databases)
         if (node != null) {
             AbstractNodeModel progressingTreeNodeModel = (AbstractNodeModel) node.getUserObject();
             progressingTreeNodeModel.setIndexProgress(dataCount);  // Update the progress value of the model
             DefaultTreeModel treeModel = (DefaultTreeModel) this.getModel();
             treeModel.nodeChanged(node);  // Update the node
         }
     }
     
     public final Map<AbstractElementDatabase, DefaultMutableTreeNode> getTreeNodeModels() {
         return this.mapNodes;
     }
 }