package nt.UI.control;

import java.awt.Dimension;
import java.awt.Font;
import java.io.File;

import javax.swing.DefaultListModel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JWindow;

import nt.UI.control.interfaces.DefaultSearchBarFinder;
import nt.UI.control.interfaces.SearchBarFinder;

public class JSearchBar extends JSearchTextField{

	private static final long serialVersionUID = 1L;
	protected static final File SYMBOLS_FILE = null;
	
	protected SearchBarFinder finder;
	protected SearchDropDown dropDown;
	protected boolean completionActive = false;
	protected String lastEntered = "";
	private final JSearchBarController controller;
	
	public JSearchBar() {
		this(new DefaultSearchBarFinder());
	}
	public JSearchBar(SearchBarFinder finder) {
		this.finder = finder;
		this.dropDown = new SearchDropDown();
		setFont(new Font("LigatureSymbols", Font.PLAIN, 13));
		
		this.controller = new JSearchBarController(this);
		controller.setDefaultState();
	}
	
	@Override
	public void setVisible(boolean b) {
		super.setVisible(b);
		txtSearch.setText("\uE116 search");
		txtSearch.setHorizontalAlignment(JTextField.CENTER);
	}
	
	protected void doCompletion() {
		System.out.println("completion");
		String[] tokens = this.finder.getSearchResults(txtSearch.getText());
		if(tokens.length > 1) {
			this.dropDown.putItems(tokens);
			if(!this.dropDown.isVisible()) {
				this.dropDown.setVisible(true);
			}
		}else {
			if(this.dropDown.isVisible()) {
				this.dropDown.setVisible(false);
			}
		}
	}
	protected void startCompletion() {
		this.completionActive = true;
		this.dropDown.setVisible(true);
	}
	protected void stopCompletion() {
		this.completionActive = false;
		this.dropDown.setVisible(false);
	}
		
	protected class SearchDropDown extends JWindow{

		private static final long serialVersionUID = 1L;
		private static final int ROW_COUNT = 5;
		
		protected DefaultListModel<String> data = new DefaultListModel<>();
		protected JList<String> list = new JList<>(data);
		protected JScrollPane scrollPane = new JScrollPane(list);
		
		public SearchDropDown() {
			this.list.setVisibleRowCount(ROW_COUNT);
			setAlwaysOnTop(true);
			add(this.scrollPane);
		}
		
		public void putItems(String[] tokens) {
			this.data.clear();
			for(String token : tokens) {
				this.data.addElement(token);
			}
			positionMenu();
		}
		
		public void positionMenu() {
			JSearchBar parent = JSearchBar.this;
			if(parent.isShowing()) {
				if (this.list.getFixedCellHeight() < 0) {
					this.list.setFixedCellHeight(this.getFontMetrics(this.getFont()).getHeight() + 2);
				}
				int x, y, width, height;
				Dimension dim = parent.getSize();
				x = parent.getLocationOnScreen().x;
				y = parent.getLocationOnScreen().y + dim.height;
				width = dim.width;
				height = this.list.getFixedCellHeight() * ROW_COUNT;
				setSize(new Dimension(width, height));
				setLocation(x, y);
			}
		}		
	}
	

}