/** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
 * Software engineering by
 *  Björnsen Beratende Ingenieure GmbH
 *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
 *
 * This file is Free Software under the GNU AGPL (>=v3)
 * and comes with ABSOLUTELY NO WARRANTY! Check out the
 * documentation coming with Dive4Elements River for details.
 */
package org.dive4elements.river.artifacts.common;

import java.util.Collection;

import org.dive4elements.river.artifacts.sinfo.util.RiverInfo;

import com.lowagie.text.html.HtmlEncoder;

import net.sf.jasperreports.engine.JRException;

/**
 * @author Domenico Nardi Tironi
 */
public abstract class AbstractCalculationExportableResult extends AbstractCalculationResult {

    private static final long serialVersionUID = 1L;

    public AbstractCalculationExportableResult(final String label, final Collection<ResultRow> rows) {
        super(label, rows);
    }

    public abstract void writeCSVHeader(ExportContextCSV exportContextCSV, final RiverInfo river);

    public final void writeCsv(final ExportContextCSV exportContextCSV) {

        writeCSVResultMetadata(exportContextCSV);
        // wenn resultsmetadata null sind!? keine neue zeile
        // writer.writeNext(new String[] { "" }); // break line in den Implementationen,
        // weil es sein kann, dass KEINE ResultMetadata geschrieben werden; dann wäre eine Leerzeile überflüssig

        /* now the value rows */
        final Collection<ResultRow> rows = getRows();
        for (final ResultRow row : rows)
            writeCSVRow(exportContextCSV, row);
    }

    protected abstract void writeCSVResultMetadata(final ExportContextCSV exportContextCSV);

    protected void writeCSVRow(final ExportContextCSV exportContextCSV, final ResultRow row) {
        final String[] formattedRow = formatCSVRow(exportContextCSV, row);
        exportContextCSV.writeCSVLine(formattedRow);
    }

    protected abstract String[] formatCSVRow(ExportContextCSV exportContextCSV, final ResultRow row);

    protected abstract String[] formatPDFRow(ExportContextPDF exportContextPDF, ResultRow row);

    public JasperDesigner addReport(final ExportContextPDF exportContext, final JasperReporter reporter, final MetaAndTableJRDataSource source)
            throws JRException {

        final JasperDesigner design = reporter.addReport(getJasperFile(), source);
        addJRTableHeader(exportContext, source);
        addJRTableData(exportContext, source);
        return design;
    }

    protected abstract String getJasperFile();

    protected abstract void addJRTableHeader(ExportContextPDF exportContext, MetaAndTableJRDataSource source);

    private void addJRTableData(final ExportContextPDF exportContext, final MetaAndTableJRDataSource source) {

        final Collection<ResultRow> rows = getRows();

        for (final ResultRow row : rows) {

            final String[] formattedRow = formatPDFRow(exportContext, row);

            final String[] encodedRow = new String[formattedRow.length];
            for (int i = 0; i < encodedRow.length; i++) {
                encodedRow[i] = HtmlEncoder.encode(formattedRow[i]);
            }

            source.addData(encodedRow);
        }
    }
}