package report;

import java.io.FileOutputStream;
import java.math.BigDecimal;
import java.util.Collection;
import java.util.Map;
import model.Student;
import static net.sf.dynamicreports.report.builder.DynamicReports.cmp;
import static net.sf.dynamicreports.report.builder.DynamicReports.field;
import static net.sf.dynamicreports.report.builder.DynamicReports.grp;
import static net.sf.dynamicreports.report.builder.DynamicReports.margin;
import static net.sf.dynamicreports.report.builder.DynamicReports.report;
import static net.sf.dynamicreports.report.builder.DynamicReports.stl;
import static net.sf.dynamicreports.report.builder.DynamicReports.template;
import static net.sf.dynamicreports.report.builder.DynamicReports.type;
import net.sf.dynamicreports.report.builder.FieldBuilder;
import net.sf.dynamicreports.report.builder.group.CustomGroupBuilder;
import net.sf.dynamicreports.report.builder.style.StyleBuilder;
import net.sf.dynamicreports.report.constant.HorizontalTextAlignment;
import net.sf.dynamicreports.report.constant.LineStyle;
import net.sf.dynamicreports.report.constant.VerticalTextAlignment;
import net.sf.jasperreports.engine.data.JRMapCollectionDataSource;

/**
 *
 * @author Mark George <mark.george@otago.ac.nz>
 */
public class FeedbackReportGenerator {

	private final Collection<Map<String, ?>> data;
	private final String outputDirectory;
	private final String fileNamePrefix;

	public FeedbackReportGenerator(Collection<Map<String, ?>> data, String outputDirectory, String fileNamePrefix) {
		this.data = data;
		this.outputDirectory = outputDirectory;
		this.fileNamePrefix = fileNamePrefix;
	}

	public void generate(Student student) throws Exception {

		StyleBuilder labelSty
				= stl.style()
						.bold()
						.setHorizontalTextAlignment(HorizontalTextAlignment.RIGHT)
						.setVerticalTextAlignment(VerticalTextAlignment.MIDDLE);

		StyleBuilder valSty
				= stl.style()
						.setHorizontalTextAlignment(HorizontalTextAlignment.LEFT)
						.setVerticalTextAlignment(VerticalTextAlignment.MIDDLE);

		StyleBuilder markSty
				= stl.style()
						.bold()
						.setHorizontalTextAlignment(HorizontalTextAlignment.RIGHT)
						.setVerticalTextAlignment(VerticalTextAlignment.MIDDLE);

		StyleBuilder criterionSty
				= stl.style()
						.bold()
						.setHorizontalTextAlignment(HorizontalTextAlignment.LEFT)
						.setVerticalTextAlignment(VerticalTextAlignment.MIDDLE);

		FieldBuilder<String> assessment = field("ASSESSMENT", type.stringType());
		FieldBuilder<BigDecimal> outOf = field("OUTOF", type.bigDecimalType());
		FieldBuilder<String> id = field("STUDENTID", type.stringType());
		FieldBuilder<String> name = field("NAME", type.stringType());
		FieldBuilder<BigDecimal> mark = field("MARK", type.bigDecimalType());

		FieldBuilder<String> category = field("CATEGORY", type.stringType());

		CustomGroupBuilder categoryGroup = grp.group(category).setStyle(stl.style().bold().setFontSize(12));

		FieldBuilder<String> criterion = field("CRITERION", type.stringType());
		FieldBuilder<BigDecimal> result = field("RESULT", type.bigDecimalType());
		FieldBuilder<BigDecimal> max = field("MAX", type.bigDecimalType());
		FieldBuilder<String> comment = field("COMMENT", type.stringType());

		// header
		report()
				.setTemplate(template().setPageMargin(margin(50)))
				.setDataSource(new JRMapCollectionDataSource(data))
				.title(
						cmp.text("INFO202: Developing Information Systems 2 – Assessment Feedback").setStyle(stl.style().setFontSize(14).bold()),
						cmp.verticalGap(10),
						cmp.horizontalList()
								.add(
										cmp.text("Assessment:").setStyle(labelSty).setWidth(15),
										cmp.horizontalGap(5),
										cmp.text(assessment).setStyle(valSty)
								)
								.newRow().add(
										cmp.text("ID:").setStyle(labelSty).setWidth(15),
										cmp.horizontalGap(5),
										cmp.text(id).setStyle(valSty)
								)
								.newRow().add(
										cmp.text("Name:").setStyle(labelSty).setWidth(15),
										cmp.horizontalGap(5),
										cmp.text(name).setStyle(valSty)
								)
								.newRow().add(
										cmp.text("Mark:").setStyle(labelSty).setWidth(15),
										cmp.horizontalGap(5),
										cmp.text(mark).setStyle(valSty)
								)
								.newRow().add(
										cmp.text("Out of:").setStyle(labelSty).setWidth(15),
										cmp.horizontalGap(5),
										cmp.text(outOf).setStyle(valSty)
								),
						cmp.verticalGap(15)
				)
				// details

				.groupBy(categoryGroup).groupHeader(categoryGroup, cmp.line().setPen(stl.pen(2.0f, LineStyle.DOUBLE)))
				.detail(
						cmp.verticalGap(1),
						cmp.horizontalList()
								.add(
										cmp.text(criterion).setStyle(criterionSty).setWidth(50),
										cmp.text(result).setStyle(markSty).setWidth(4),
										cmp.text("/").setStyle(labelSty).setWidth(1),
										cmp.horizontalGap(5),
										cmp.text(max).setStyle(valSty).setWidth(3)
								),
						cmp.horizontalList(
								cmp.horizontalGap(11),
								cmp.text(comment).removeLineWhenBlank()
						).setMinHeight(0),
						cmp.verticalGap(1),
						cmp.line().setPen(stl.penThin())
				)
				.groupFooter(categoryGroup, cmp.verticalGap(15))
				.summary(cmp.text("Your mark is calculated by dividing the mark for each criterion by the maximum for that criterion, then multiplying by a weight (not shown in this report, but available on request), and then adding all of the weighted marks together.  The weightings are based on the size, complexity, and importance of the criterion."))
				//				.summary(cmp.text("The mark for the bonus tasks is only applied if you lost marks in other components (including the UML diagrams and security audit).  In other words, your total mark is capped at 25."))
				.pageFooter(cmp.pageXofY().setStyle(stl.style().bold()))
				//				.show()

				.toPdf(new FileOutputStream(outputDirectory + "/" + fileNamePrefix + "-" + student.getId() + ".pdf"));

	}

}