package org.vaadin.firitin;

import com.vaadin.flow.component.notification.Notification;
import com.vaadin.flow.component.select.Select;
import org.vaadin.firitin.components.grid.PagingGrid;
import org.vaadin.firitin.layouts.HorizontalFloatLayout;
import org.vaadin.firitin.testdomain.Person;
import org.vaadin.firitin.testdomain.Service;

import com.vaadin.flow.component.button.Button;
import com.vaadin.flow.component.grid.GridSortOrder;
import com.vaadin.flow.component.orderedlayout.VerticalLayout;
import com.vaadin.flow.data.provider.SortDirection;
import com.vaadin.flow.router.Route;

import java.text.MessageFormat;

/**
 * A prototype of a Grid with built-in paging widget and support for huge
 * collections. Reporting size is optional.
 *
 * @author Matti Tahvonen
 */
@Route
public class TraditionalPaging extends VerticalLayout {

	public TraditionalPaging() {
		final PagingGrid<Person> table = new PagingGrid<>(Person.class);

		//table.sort(GridSortOrder.desc(table.getColumnByKey("age")).build());

		// Define results with a simpler data provider API, that just gives you page to
		// request
		table.setPagingDataProvider((page, pageSize) -> {
			// This is demo specific line, normally, e.g. with spring data, page number is
			// enough
			int start = (int) (page * table.getPageSize());
			String sortProperty = "id";
			boolean asc = true;

			// Optional, sorting
			if (!table.getSortOrder().isEmpty()) {
				GridSortOrder<Person> sortOrder = table.getSortOrder().get(0);
				sortProperty = sortOrder.getSorted().getKey();
				asc = sortOrder.getDirection() == SortDirection.ASCENDING;
			}
			return Service.findAll(start, pageSize, sortProperty, asc);
		});

		// Optional
		// If you know, or some further long running task can detect the size of
		// results, it can be defined later:
		Button b = new Button("Define size to 1000", e -> {
			table.setTotalResults(1000);
		});
		// Optional
		// If you know, or some further long running task can detect the size of
		// results, it can be defined later:
		Button b2 = new Button("Define size to 90", e -> {
			table.setTotalResults(90);
		});

		Button b3 = new Button("Set page size to 5", e-> {
			table.setPageSize(5);
		});

		Button b4 = new Button("Set custom msg format", e-> {
			table.setStatusMessage(new MessageFormat("Sivu {0}, {1} tulosta per sivu."));
		});

		Select<PagingGrid.PaginationBarMode> select = new Select<>();
		select.setItems(PagingGrid.PaginationBarMode.values());
		select.setValue(PagingGrid.PaginationBarMode.TOP);
		select.addValueChangeListener(e -> {
			table.setPaginationBarMode(e.getValue());
		});

		Button resetData = new Button("Reset data", e -> {
			Notification.show("Resetting data, should get to the first page");
			table.setPagingDataProvider((page, pageSize) -> {
				// This is demo specific line, normally, e.g. with spring data, page number is
				// enough
				int start = (int) (page * table.getPageSize());
				// Optional, sorting
				String sortProperty = "id";
				boolean asc = true;

				if (!table.getSortOrder().isEmpty()) {
					GridSortOrder<Person> sortOrder = table.getSortOrder().get(0);
					sortProperty = sortOrder.getSorted().getKey();
					asc = sortOrder.getDirection() == SortDirection.ASCENDING;
				}
				return Service.findAll(start, pageSize, sortProperty, asc);
			});
		});

		add(table, new HorizontalFloatLayout(b, b2, b3, select, b4, resetData));
	}

}