/*
 * DynamicReports - Free Java reporting library for creating reports dynamically
 *
 * Copyright (C) 2010 - 2018 Ricardo Mariaca and the Dynamic Reports Contributors
 * http://www.dynamicreports.org
 *
 * This file is part of DynamicReports.
 *
 * DynamicReports is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * DynamicReports is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with DynamicReports. If not, see <http://www.gnu.org/licenses/>.
 */
package cn.myapps.report.examples.gettingstarted;

import net.sf.dynamicreports.report.builder.column.PercentageColumnBuilder;
import net.sf.dynamicreports.report.builder.column.TextColumnBuilder;
import net.sf.dynamicreports.report.builder.style.StyleBuilder;
import net.sf.dynamicreports.report.constant.HorizontalTextAlignment;
import net.sf.dynamicreports.report.datasource.DRDataSource;
import net.sf.dynamicreports.report.exception.DRException;
import net.sf.jasperreports.engine.JRDataSource;

import java.awt.Color;
import java.math.BigDecimal;

import static net.sf.dynamicreports.report.builder.DynamicReports.cmp;
import static net.sf.dynamicreports.report.builder.DynamicReports.col;
import static net.sf.dynamicreports.report.builder.DynamicReports.report;
import static net.sf.dynamicreports.report.builder.DynamicReports.sbt;
import static net.sf.dynamicreports.report.builder.DynamicReports.stl;
import static net.sf.dynamicreports.report.builder.DynamicReports.type;

/**
 * <p>SimpleReport_Step05 class.</p>
 *
 * @author Ricardo Mariaca (r.mariaca@dynamicreports.org)
 * @version $Id: $Id
 */
public class SimpleReport_Step05 {

    /**
     * <p>Constructor for SimpleReport_Step05.</p>
     */
    public SimpleReport_Step05() {
        build();
    }

    /**
     * <p>main.</p>
     *
     * @param args an array of {@link java.lang.String} objects.
     */
    public static void main(String[] args) {
        new SimpleReport_Step05();
    }

    private void build() {
        StyleBuilder boldStyle = stl.style().bold();
        StyleBuilder boldCenteredStyle = stl.style(boldStyle).setHorizontalTextAlignment(HorizontalTextAlignment.CENTER);
        StyleBuilder columnTitleStyle = stl.style(boldCenteredStyle).setBorder(stl.pen1Point()).setBackgroundColor(Color.LIGHT_GRAY);

        // title, field name data type
        TextColumnBuilder<String> itemColumn = col.column("Item", "item", type.stringType()).setStyle(boldStyle);
        TextColumnBuilder<Integer> quantityColumn = col.column("Quantity", "quantity", type.integerType());
        TextColumnBuilder<BigDecimal> unitPriceColumn = col.column("Unit price", "unitprice", type.bigDecimalType());
        // price = unitPrice * quantity
        TextColumnBuilder<BigDecimal> priceColumn = unitPriceColumn.multiply(quantityColumn).setTitle("Price");
        PercentageColumnBuilder pricePercColumn = col.percentageColumn("Price %", priceColumn);
        TextColumnBuilder<Integer> rowNumberColumn = col.reportRowNumberColumn("No.")
                                                        // sets the fixed width of a column, width = 2 * character width
                                                        .setFixedColumns(2).setHorizontalTextAlignment(HorizontalTextAlignment.CENTER);
        try {
            report()// create new report design
                    .setColumnTitleStyle(columnTitleStyle)
                    .setSubtotalStyle(boldStyle)
                    .highlightDetailEvenRows()
                    .columns(// add columns
                             rowNumberColumn, itemColumn, quantityColumn, unitPriceColumn, priceColumn, pricePercColumn)
                    .groupBy(itemColumn)
                    .subtotalsAtSummary(sbt.sum(unitPriceColumn), sbt.sum(priceColumn))
                    .subtotalsAtFirstGroupFooter(sbt.sum(unitPriceColumn), sbt.sum(priceColumn))
                    .title(cmp.text("Getting started").setStyle(boldCenteredStyle))// shows report title
                    .pageFooter(cmp.pageXofY().setStyle(boldCenteredStyle))// shows number of page at page footer
                    .setDataSource(createDataSource())// set datasource
                    .show();// create and show report
        } catch (DRException e) {
            e.printStackTrace();
        }
    }

    private JRDataSource createDataSource() {
        DRDataSource dataSource = new DRDataSource("item", "quantity", "unitprice");
        dataSource.add("Notebook", 1, new BigDecimal(500));
        dataSource.add("DVD", 5, new BigDecimal(30));
        dataSource.add("DVD", 1, new BigDecimal(28));
        dataSource.add("DVD", 5, new BigDecimal(32));
        dataSource.add("Book", 3, new BigDecimal(11));
        dataSource.add("Book", 1, new BigDecimal(15));
        dataSource.add("Book", 5, new BigDecimal(10));
        dataSource.add("Book", 8, new BigDecimal(9));
        return dataSource;
    }
}
