package com.floreantpos.ui.ticket;

import java.awt.Color;
import java.awt.Rectangle;

import javax.swing.DefaultListSelectionModel;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;

import com.floreantpos.model.Ticket;
import com.floreantpos.model.TicketItem;
import com.floreantpos.model.TicketItemModifier;
import com.floreantpos.util.ModifierStateChangeListener;

public class TicketViewerTable extends JTable {

	private TicketViewerTableModel model;
	private DefaultListSelectionModel selectionModel;
	private TicketViewerTableCellRenderer cellRenderer;

	private ModifierStateChangeListener modifierStateChangeListener;

	public TicketViewerTable() {
		this(null);
	}

	public TicketViewerTable(Ticket ticket) {
		model = new TicketViewerTableModel(this);
		setModel(model);

		selectionModel = new DefaultListSelectionModel();
		selectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

		cellRenderer = new TicketViewerTableCellRenderer();

		setGridColor(Color.LIGHT_GRAY);
		setSelectionModel(selectionModel);
		setAutoscrolls(true);
		setShowGrid(true);
		setBorder(null);

		setFocusable(false);

		setRowHeight(60);
		resizeTableColumns();

		setTicket(ticket);
	}

	private void resizeTableColumns() {
		setAutoResizeMode(AUTO_RESIZE_ALL_COLUMNS);
		setColumnWidth(1, 50);
		setColumnWidth(2, 30);
		setColumnWidth(3, 60);
	}

	private void setColumnWidth(int columnNumber, int width) {
		TableColumn column = getColumnModel().getColumn(columnNumber);

		column.setPreferredWidth(width);
		column.setMaxWidth(width);
		column.setMinWidth(width);
	}

	@Override
	public TableCellRenderer getCellRenderer(int row, int column) {
		return cellRenderer;
	}

	public TicketViewerTableCellRenderer getRenderer() {
		return cellRenderer;
	}

	private boolean isTicketNull() {
		Ticket ticket = getTicket();
		if (ticket == null) {
			return true;
		}
		if (ticket.getTicketItems() == null) {
			return true;
		}
		return false;
	}

	public void scrollUp() {
		if (isTicketNull())
			return;

		int selectedRow = getSelectedRow();
		int rowCount = model.getItemCount();

		if (selectedRow > (rowCount - 1)) {
			return;
		}

		--selectedRow;

		selectionModel.addSelectionInterval(selectedRow, selectedRow);
		Rectangle cellRect = getCellRect(selectedRow, 0, false);
		scrollRectToVisible(cellRect);
	}

	public void scrollDown() {
		if (isTicketNull())
			return;

		int selectedRow = getSelectedRow();
		if (selectedRow >= model.getItemCount() - 1) {
			return;
		}

		++selectedRow;

		selectionModel.addSelectionInterval(selectedRow, selectedRow);
		Rectangle cellRect = getCellRect(selectedRow, 0, false);
		scrollRectToVisible(cellRect);
	}

	public void increaseItemAmount(TicketItem ticketItem) {
		int itemCount = ticketItem.getItemCount();
		ticketItem.setItemCount(++itemCount);
		repaint();
	}

	public boolean increaseItemAmount() {
		int selectedRow = getSelectedRow();
		if (selectedRow < 0) {
			return false;
		}
		else if (selectedRow >= model.getItemCount()) {
			return false;
		}

		Object object = model.get(selectedRow);
		if (object instanceof TicketItem) {
			TicketItem ticketItem = (TicketItem) object;
			int itemCount = ticketItem.getItemCount();
			ticketItem.setItemCount(++itemCount);
			repaint();

			return true;
		}
		else if (object instanceof TicketItemModifier) {
			TicketItemModifier modifier = (TicketItemModifier) object;
			int itemCount = modifier.getItemCount();
			modifier.setItemCount(++itemCount);
			repaint();

			if(modifierStateChangeListener != null) {
				modifierStateChangeListener.modifierStateChanged();
			}

			return true;
		}
		return false;
	}

	public boolean decreaseItemAmount() {
		int selectedRow = getSelectedRow();
		if (selectedRow < 0) {
			return false;
		}
		else if (selectedRow >= model.getItemCount()) {
			return false;
		}

		Object object = model.get(selectedRow);
		if (object instanceof TicketItem) {
			TicketItem ticketItem = (TicketItem) object;
			int itemCount = ticketItem.getItemCount();
			if (itemCount == 1)
				return false;

			ticketItem.setItemCount(--itemCount);
			repaint();

			return true;
		}
		else if (object instanceof TicketItemModifier) {
			TicketItemModifier modifier = (TicketItemModifier) object;
			int itemCount = modifier.getItemCount();
			if (itemCount == 1)
				return false;

			modifier.setItemCount(--itemCount);
			repaint();

			if(modifierStateChangeListener != null) {
				modifierStateChangeListener.modifierStateChanged();
			}

			return true;
		}
		return false;
	}

	public void setTicket(Ticket ticket) {
		model.setTicket(ticket);
	}

	public Ticket getTicket() {
		return model.getTicket();
	}

	public void addTicketItem(TicketItem ticketItem) {
		ticketItem.setTicket(getTicket());
		int addTicketItem = model.addTicketItem(ticketItem);

		int actualRowCount = addTicketItem;//getActualRowCount() - 1;
		selectionModel.addSelectionInterval(actualRowCount, actualRowCount);
		Rectangle cellRect = getCellRect(actualRowCount, 0, false);
		scrollRectToVisible(cellRect);
	}

	public Object deleteSelectedItem() {
		int selectedRow = getSelectedRow();
		Object delete = model.delete(selectedRow);

		if(delete instanceof TicketItemModifier) {
			if(modifierStateChangeListener != null) {
				TicketItemModifier modifier = (TicketItemModifier) delete;
				modifier.setModifierType(TicketItemModifier.MODIFIER_NOT_INITIALIZED);
				modifier.setItemCount(0);
				modifierStateChangeListener.updateView(modifier);
			}
		}
		return delete;
	}

	public boolean containsTicketItem(TicketItem ticketItem) {
		return model.containsTicketItem(ticketItem);
	}

	public void delete(int index) {
		model.delete(index);
	}

	public Object get(int index) {
		return model.get(index);
	}

	public Object getSelected() {
		int index = getSelectedRow();

		return model.get(index);
	}

	public void addAllTicketItem(TicketItem ticketItem) {
		model.addAllTicketItem(ticketItem);
	}

	public void removeModifier(TicketItem parent, TicketItemModifier modifier) {
		model.removeModifier(parent, modifier);
	}

	public void updateView() {
		int selectedRow = getSelectedRow();

		model.update();

		try {
			getSelectionModel().setSelectionInterval(selectedRow, selectedRow);
		}catch (Exception e) {
			// do nothing
		}
	}

	public int getActualRowCount() {
		return model.getActualRowCount();
	}

	public void selectLast() {
		int actualRowCount = getActualRowCount() - 1;
		selectionModel.addSelectionInterval(actualRowCount, actualRowCount);
		Rectangle cellRect = getCellRect(actualRowCount, 0, false);
		scrollRectToVisible(cellRect);
	}

	public void selectRow(int index) {
		if(index < 0 || index >= getActualRowCount()) {
			index = 0;
		}
		selectionModel.addSelectionInterval(index, index);
		Rectangle cellRect = getCellRect(index, 0, false);
		scrollRectToVisible(cellRect);
	}

	public ModifierStateChangeListener getModifierStateChangeListener() {
		return modifierStateChangeListener;
	}

	public void setModifierStateChangeListener(ModifierStateChangeListener modifierStateChangeListener) {
		this.modifierStateChangeListener = modifierStateChangeListener;
	}
}