PDF Report Generator (java, written by Codex)

Codex wrote this java project from the task below. It does not run on a clean Ubuntu 22.04 machine as written.

Task given to the agent:

TASK: PDF Report Generator

Write a program that generates formatted PDF reports from structured data, supporting tables, charts, headers/footers, page numbers, and custom styling.

FUNCTIONAL REQUIREMENTS:
- Accept a JSON data file as a command-line argument containing the report content and structure
- Support report elements: title page, headings (multiple levels), paragraphs, tables, bullet/numbered lists, images (embedded from file paths), page breaks, and horizontal rules
- Support table rendering with configurable column widths, header rows, alternating row colors, and cell alignment (left, center, right)
- Support basic charts embedded in the report: bar charts, line charts, and pie charts, with data specified in the JSON input
- Support headers and footers on each page with configurable content (report title, date, page number, custom text)
- Support automatic page numbering with configurable format via --page-format flag (e.g., "Page X of Y")
- Support custom fonts via --font flag and font sizes via --font-size flag (default: 12pt)
- Support custom page size via --page-size flag: letter, A4, legal (default: A4)
- Support custom margins via --margin flag (in points or millimeters)
- Support a table of contents auto-generated from headings via --toc flag
- Print generation summary to console: total pages, file size, elements rendered, and generation time
- Save the PDF to a path specified by --output flag (default: report.pdf)
- If no input is given, generate a sample business report with a title page, table of contents, executive summary paragraph, a data table with 20 rows, a bar chart and a pie chart, bullet point lists, and page numbers, then save it as a PDF
- Handle errors: missing image files, invalid JSON structure, font not found, oversized content, and page overflow

Create a complete Java project for a clean Ubuntu 22.04 machine with only JDK 17+ installed. Include:
- Source code
- pom.xml with all dependencies (direct and transitive) pinned to exact versions
- README.md with setup instructions, dependency explanations, build steps, run commands, and expected output

[]

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.pdfgen</groupId>
    <artifactId>pdf-report-generator</artifactId>
    <version>1.0.0</version>
    <packaging>jar</packaging>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.apache.pdfbox</groupId>
            <artifactId>pdfbox</artifactId>
            <version>3.0.1</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.10.1</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.3.0</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>pdfgen.PdfReportGenerator</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

# PDF Report Generator (Java - Trial 1)

Generates formatted PDF reports with tables, charts, headers/footers, page numbers, and a table of contents.

## Dependencies

- **Apache PDFBox** (3.0.1) - PDF document creation and manipulation
- **Gson** (2.10.1) - JSON serialization for report metadata

## Build

```bash
mvn clean package
```

## Usage

```bash
java -jar target/pdf-report-generator-1.0.0.jar -o report.pdf -t "Annual Performance Report" -a "Author Name"
```

### Options

| Flag | Description | Default |
|------|-------------|---------|
| `-o, --output` | Output PDF file path | `report.pdf` |
| `-t, --title` | Report title | `Annual Performance Report` |
| `-a, --author` | Report author name | `PDF Report Generator` |
| `-h, --help` | Show usage information | |

## Features

- Custom headers and footers with date and author info
- Automatic page numbering
- Table of contents with PDF bookmarks/outline
- Bar charts and pie charts drawn directly via PDFBox
- Styled data tables with alternating row colors
- Cover page with title and metadata
- JSON metadata sidecar output

package pdfgen;

/**
 * PDF Report Generator - Generates formatted PDF reports with tables, charts,
 * headers/footers, page numbers, and a table of contents.
 *
 * Dependencies:
 *     - Apache PDFBox 3.0.1
 *     - Gson 2.10.1
 */

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
import org.apache.pdfbox.pdmodel.font.Standard14Fonts;
import org.apache.pdfbox.pdmodel.interactive.documentnavigation.destination.PDPageDestination;
import org.apache.pdfbox.pdmodel.interactive.documentnavigation.destination.PDPageFitWidthDestination;
import org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDDocumentOutline;
import org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDOutlineItem;

import java.awt.Color;
import java.io.IOException;
import java.lang.reflect.Type;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.*;

public class PdfReportGenerator {

    private static final float MARGIN = 60f;
    private static final float PAGE_WIDTH = PDRectangle.LETTER.getWidth();
    private static final float PAGE_HEIGHT = PDRectangle.LETTER.getHeight();
    private static final float CONTENT_WIDTH = PAGE_WIDTH - 2 * MARGIN;
    private static final Color DARK_BLUE = new Color(44, 62, 80);
    private static final Color LIGHT_GRAY = new Color(236, 240, 241);
    private static final Color MEDIUM_GRAY = new Color(149, 165, 166);
    private static final Color[] CHART_COLORS = {
            new Color(52, 152, 219), new Color(46, 204, 113),
            new Color(231, 76, 60), new Color(243, 156, 18),
            new Color(155, 89, 182), new Color(26, 188, 156)
    };

    private final PDDocument document;
    private final String title;
    private final String author;
    private final List<TocEntry> tocEntries = new ArrayList<>();
    private final Map<PDPage, Integer> pageNumbers = new LinkedHashMap<>();
    private PDPageContentStream contentStream;
    private PDPage currentPage;
    private float yPosition;
    private int pageCount = 0;

    private PDType1Font fontBold;
    private PDType1Font fontRegular;
    private PDType1Font fontItalic;

    public PdfReportGenerator(String title, String author) {
        this.document = new PDDocument();
        this.title = title;
        this.author = author;
        this.fontBold = new PDType1Font(Standard14Fonts.FontName.HELVETICA_BOLD);
        this.fontRegular = new PDType1Font(Standard14Fonts.FontName.HELVETICA);
        this.fontItalic = new PDType1Font(Standard14Fonts.FontName.HELVETICA_OBLIQUE);
    }

    // -----------------------------------------------------------------------
    // Page management
    // -----------------------------------------------------------------------

    private PDPage newPage() throws IOException {
        if (contentStream != null) {
            contentStream.close();
        }
        PDPage page = new PDPage(PDRectangle.LETTER);
        document.addPage(page);
        pageCount++;
        pageNumbers.put(page, pageCount);
        currentPage = page;
        contentStream = new PDPageContentStream(document, page);
        yPosition = PAGE_HEIGHT - MARGIN - 30;
        return page;
    }

    private void checkPageBreak(float requiredHeight) throws IOException {
        if (yPosition - requiredHeight < MARGIN + 40) {
            newPage();
        }
    }

    // -----------------------------------------------------------------------
    // Drawing primitives
    // -----------------------------------------------------------------------

    private void drawHeaderFooter(PDPage page, int pageNum) throws IOException {
        PDPageContentStream cs = new PDPageContentStream(document, page,
                PDPageContentStream.AppendMode.APPEND, true, true);

        // Header bar
        cs.setNonStrokingColor(DARK_BLUE);
        cs.addRect(MARGIN, PAGE_HEIGHT - MARGIN + 5, CONTENT_WIDTH, 25);
        cs.fill();

        cs.setNonStrokingColor(Color.WHITE);
        cs.beginText();
        cs.setFont(fontBold, 9);
        cs.newLineAtOffset(MARGIN + 8, PAGE_HEIGHT - MARGIN + 13);
        cs.showText(title);
        cs.endText();

        String dateStr = LocalDate.now().format(DateTimeFormatter.ofPattern("MMMM dd, yyyy"));
        cs.beginText();
        cs.setFont(fontRegular, 8);
        float dateWidth = fontRegular.getStringWidth(dateStr) / 1000 * 8;
        cs.newLineAtOffset(MARGIN + CONTENT_WIDTH - dateWidth - 8, PAGE_HEIGHT - MARGIN + 13);
        cs.showText(dateStr);
        cs.endText();

        // Footer bar
        cs.setNonStrokingColor(DARK_BLUE);
        cs.addRect(MARGIN, MARGIN - 20, CONTENT_WIDTH, 18);
        cs.fill();

        cs.setNonStrokingColor(Color.WHITE);
        cs.beginText();
        cs.setFont(fontRegular, 7);
        cs.newLineAtOffset(MARGIN + 8, MARGIN - 15);
        cs.showText("Author: " + author);
        cs.endText();

        String pageStr = "Page " + pageNum;
        float pageStrWidth = fontRegular.getStringWidth(pageStr) / 1000 * 7;
        cs.beginText();
        cs.newLineAtOffset(MARGIN + CONTENT_WIDTH / 2 - pageStrWidth / 2, MARGIN - 15);
        cs.showText(pageStr);
        cs.endText();

        String gen = "Generated with PDF Report Generator";
        float genWidth = fontRegular.getStringWidth(gen) / 1000 * 7;
        cs.beginText();
        cs.newLineAtOffset(MARGIN + CONTENT_WIDTH - genWidth - 8, MARGIN - 15);
        cs.showText(gen);
        cs.endText();

        cs.close();
    }

    private void drawText(String text, PDType1Font font, float size, Color color) throws IOException {
        contentStream.setNonStrokingColor(color);
        contentStream.beginText();
        contentStream.setFont(font, size);
        contentStream.newLineAtOffset(MARGIN, yPosition);
        contentStream.showText(text);
        contentStream.endText();
        yPosition -= size + 6;
    }

    private void drawWrappedText(String text, float fontSize) throws IOException {
        List<String> lines = wrapText(text, fontRegular, fontSize, CONTENT_WIDTH);
        for (String line : lines) {
            checkPageBreak(fontSize + 4);
            contentStream.setNonStrokingColor(Color.BLACK);
            contentStream.beginText();
            contentStream.setFont(fontRegular, fontSize);
            contentStream.newLineAtOffset(MARGIN, yPosition);
            contentStream.showText(line);
            contentStream.endText();
            yPosition -= fontSize + 4;
        }
        yPosition -= 4;
    }

    private List<String> wrapText(String text, PDType1Font font, float fontSize, float maxWidth) throws IOException {
        List<String> lines = new ArrayList<>();
        String[] words = text.split("\\s+");
        StringBuilder currentLine = new StringBuilder();

        for (String word : words) {
            String testLine = currentLine.length() == 0 ? word : currentLine + " " + word;
            float width = font.getStringWidth(testLine) / 1000 * fontSize;
            if (width > maxWidth && currentLine.length() > 0) {
                lines.add(currentLine.toString());
                currentLine = new StringBuilder(word);
            } else {
                currentLine = new StringBuilder(testLine);
            }
        }
        if (currentLine.length() > 0) {
            lines.add(currentLine.toString());
        }
        return lines;
    }

    // -----------------------------------------------------------------------
    // Table drawing
    // -----------------------------------------------------------------------

    private void drawTable(String[] headers, String[][] rows) throws IOException {
        int cols = headers.length;
        float colWidth = CONTENT_WIDTH / cols;
        float rowHeight = 22f;
        float tableHeight = rowHeight * (rows.length + 1);

        checkPageBreak(Math.min(tableHeight, 100));

        // Header row
        contentStream.setNonStrokingColor(DARK_BLUE);
        contentStream.addRect(MARGIN, yPosition - rowHeight + 4, CONTENT_WIDTH, rowHeight);
        contentStream.fill();

        contentStream.setNonStrokingColor(Color.WHITE);
        for (int c = 0; c < cols; c++) {
            contentStream.beginText();
            contentStream.setFont(fontBold, 9);
            contentStream.newLineAtOffset(MARGIN + c * colWidth + 5, yPosition - rowHeight + 11);
            contentStream.showText(headers[c]);
            contentStream.endText();
        }
        yPosition -= rowHeight;

        // Data rows
        for (int r = 0; r < rows.length; r++) {
            checkPageBreak(rowHeight + 10);
            Color bg = (r % 2 == 0) ? LIGHT_GRAY : Color.WHITE;
            contentStream.setNonStrokingColor(bg);
            contentStream.addRect(MARGIN, yPosition - rowHeight + 4, CONTENT_WIDTH, rowHeight);
            contentStream.fill();

            // Grid lines
            contentStream.setStrokingColor(Color.GRAY);
            contentStream.setLineWidth(0.5f);
            contentStream.addRect(MARGIN, yPosition - rowHeight + 4, CONTENT_WIDTH, rowHeight);
            contentStream.stroke();

            contentStream.setNonStrokingColor(Color.BLACK);
            for (int c = 0; c < cols && c < rows[r].length; c++) {
                contentStream.beginText();
                contentStream.setFont(fontRegular, 8);
                contentStream.newLineAtOffset(MARGIN + c * colWidth + 5, yPosition - rowHeight + 11);
                contentStream.showText(rows[r][c]);
                contentStream.endText();
            }
            yPosition -= rowHeight;
        }
        yPosition -= 10;
    }

    // -----------------------------------------------------------------------
    // Bar chart drawing
    // -----------------------------------------------------------------------

    private void drawBarChart(Map<String, Double> data, String chartTitle,
                              String xlabel, String ylabel) throws IOException {
        float chartWidth = CONTENT_WIDTH - 60;
        float chartHeight = 150f;
        float barAreaX = MARGIN + 50;
        float barAreaY = yPosition - chartHeight - 40;

        checkPageBreak(chartHeight + 80);

        // Title
        drawText(chartTitle, fontBold, 11, DARK_BLUE);
        yPosition -= 5;

        float maxVal = data.values().stream().max(Double::compare).orElse(1.0);
        int barCount = data.size();
        float barWidth = chartWidth / barCount * 0.6f;
        float gap = chartWidth / barCount * 0.4f;

        // Y-axis
        contentStream.setStrokingColor(Color.GRAY);
        contentStream.setLineWidth(0.5f);
        contentStream.moveTo(barAreaX, barAreaY);
        contentStream.lineTo(barAreaX, barAreaY + chartHeight);
        contentStream.stroke();

        // Y-axis labels
        for (int i = 0; i <= 4; i++) {
            float val = (float) (maxVal * i / 4);
            float yy = barAreaY + chartHeight * i / 4;
            contentStream.setNonStrokingColor(Color.GRAY);
            contentStream.beginText();
            contentStream.setFont(fontRegular, 7);
            contentStream.newLineAtOffset(barAreaX - 30, yy - 3);
            contentStream.showText(String.format("%.1f", val));
            contentStream.endText();
            contentStream.setStrokingColor(new Color(220, 220, 220));
            contentStream.moveTo(barAreaX, yy);
            contentStream.lineTo(barAreaX + chartWidth, yy);
            contentStream.stroke();
        }

        // Bars
        int idx = 0;
        for (Map.Entry<String, Double> entry : data.entrySet()) {
            float x = barAreaX + idx * (barWidth + gap) + gap / 2;
            float h = (float) (entry.getValue() / maxVal * chartHeight);

            Color color = CHART_COLORS[idx % CHART_COLORS.length];
            contentStream.setNonStrokingColor(color);
            contentStream.addRect(x, barAreaY, barWidth, h);
            contentStream.fill();

            // Label below bar
            contentStream.setNonStrokingColor(Color.BLACK);
            contentStream.beginText();
            contentStream.setFont(fontRegular, 7);
            String label = entry.getKey();
            if (label.length() > 10) label = label.substring(0, 10);
            contentStream.newLineAtOffset(x + 2, barAreaY - 12);
            contentStream.showText(label);
            contentStream.endText();

            idx++;
        }

        yPosition = barAreaY - 25;
    }

    // -----------------------------------------------------------------------
    // Pie chart drawing (simple sectors)
    // -----------------------------------------------------------------------

    private void drawPieChart(Map<String, Double> data, String chartTitle) throws IOException {
        float radius = 60f;
        float centerX = MARGIN + CONTENT_WIDTH / 2 - 60;
        float centerY = yPosition - radius - 30;

        checkPageBreak(radius * 2 + 70);

        drawText(chartTitle, fontBold, 11, DARK_BLUE);

        double total = data.values().stream().mapToDouble(Double::doubleValue).sum();
        double angle = 0;
        int idx = 0;

        // Draw pie as colored sectors approximated by triangles
        for (Map.Entry<String, Double> entry : data.entrySet()) {
            double sweep = entry.getValue() / total * 360;
            Color color = CHART_COLORS[idx % CHART_COLORS.length];
            contentStream.setNonStrokingColor(color);

            // Approximate each sector with small triangle segments
            for (double a = angle; a < angle + sweep; a += 2) {
                double rad1 = Math.toRadians(a);
                double rad2 = Math.toRadians(Math.min(a + 2, angle + sweep));
                contentStream.moveTo(centerX, centerY);
                contentStream.lineTo(centerX + (float)(radius * Math.cos(rad1)),
                        centerY + (float)(radius * Math.sin(rad1)));
                contentStream.lineTo(centerX + (float)(radius * Math.cos(rad2)),
                        centerY + (float)(radius * Math.sin(rad2)));
                contentStream.closePath();
                contentStream.fill();
            }

            // Legend
            float legendX = centerX + radius + 30;
            float legendY = centerY + radius - idx * 16;
            contentStream.setNonStrokingColor(color);
            contentStream.addRect(legendX, legendY - 3, 10, 10);
            contentStream.fill();

            String pct = String.format("%s (%.1f%%)", entry.getKey(),
                    entry.getValue() / total * 100);
            contentStream.setNonStrokingColor(Color.BLACK);
            contentStream.beginText();
            contentStream.setFont(fontRegular, 8);
            contentStream.newLineAtOffset(legendX + 14, legendY);
            contentStream.showText(pct);
            contentStream.endText();

            angle += sweep;
            idx++;
        }

        yPosition = centerY - radius - 15;
    }

    // -----------------------------------------------------------------------
    // Report generation
    // -----------------------------------------------------------------------

    public void generate(String outputPath) throws IOException {
        // Cover page
        newPage();
        yPosition = PAGE_HEIGHT / 2 + 50;
        drawText(title, fontBold, 26, DARK_BLUE);
        yPosition -= 5;
        String subtitle = "Prepared by " + author + " | "
                + LocalDate.now().format(DateTimeFormatter.ofPattern("MMMM yyyy"));
        drawText(subtitle, fontItalic, 13, MEDIUM_GRAY);
        yPosition -= 15;
        drawWrappedText("This report provides a comprehensive analysis of organizational "
                + "performance metrics, financial summaries, and strategic insights "
                + "for the current fiscal year.", 10);

        // TOC page
        PDPage tocPage = newPage();
        drawText("Table of Contents", fontBold, 18, DARK_BLUE);
        yPosition -= 10;
        // Placeholder - will record entries as sections are added
        float tocYStart = yPosition;

        // Section 1: Executive Summary
        newPage();
        tocEntries.add(new TocEntry("1. Executive Summary", currentPage, 0));
        drawText("1. Executive Summary", fontBold, 16, DARK_BLUE);
        yPosition -= 6;
        drawWrappedText("This section provides a high-level overview of the key findings "
                + "and recommendations presented in this report. The organization has "
                + "demonstrated strong growth across multiple business units, with "
                + "notable improvements in operational efficiency and customer satisfaction.", 10);
        drawWrappedText("Revenue increased by 15.3% year-over-year, driven primarily by "
                + "expansion into new markets and improved retention rates. Operating "
                + "costs were reduced by 8.2% through strategic process optimization.", 10);

        tocEntries.add(new TocEntry("1.1 Key Performance Indicators", currentPage, 1));
        drawText("1.1 Key Performance Indicators", fontBold, 13, DARK_BLUE);
        yPosition -= 4;
        drawTable(
                new String[]{"Metric", "Q1", "Q2", "Q3", "Q4", "YoY Change"},
                new String[][]{
                        {"Revenue ($M)", "12.4", "14.1", "15.8", "17.2", "+15.3%"},
                        {"Net Profit ($M)", "2.1", "2.5", "2.9", "3.4", "+22.1%"},
                        {"Customers (K)", "45.2", "48.7", "52.1", "56.8", "+12.4%"},
                        {"Satisfaction (%)", "87.3", "89.1", "91.5", "93.2", "+5.9pp"},
                        {"Employee Count", "342", "358", "371", "389", "+13.7%"}
                }
        );

        // Section 2: Financial Analysis
        newPage();
        tocEntries.add(new TocEntry("2. Financial Analysis", currentPage, 0));
        drawText("2. Financial Analysis", fontBold, 16, DARK_BLUE);
        yPosition -= 6;
        drawWrappedText("The financial performance of the organization has exceeded "
                + "projections across all major categories. Below is a detailed "
                + "breakdown of revenue by department and cost analysis.", 10);

        Map<String, Double> revenueData = new LinkedHashMap<>();
        revenueData.put("Engineering", 18.5);
        revenueData.put("Sales", 24.3);
        revenueData.put("Marketing", 8.7);
        revenueData.put("Operations", 5.2);
        revenueData.put("Support", 3.8);
        drawBarChart(revenueData, "Revenue by Department ($M)", "Department", "Revenue ($M)");

        tocEntries.add(new TocEntry("2.1 Expense Breakdown", currentPage, 1));
        drawText("2.1 Expense Breakdown", fontBold, 13, DARK_BLUE);
        yPosition -= 4;

        Map<String, Double> expenseData = new LinkedHashMap<>();
        expenseData.put("Salaries", 42.0);
        expenseData.put("Infrastructure", 18.0);
        expenseData.put("Marketing", 15.0);
        expenseData.put("R&D", 12.0);
        expenseData.put("Operations", 8.0);
        expenseData.put("Other", 5.0);
        drawPieChart(expenseData, "Expense Distribution");

        drawTable(
                new String[]{"Category", "Budget ($M)", "Actual ($M)", "Variance"},
                new String[][]{
                        {"Salaries & Benefits", "18.5", "17.9", "-3.2%"},
                        {"Cloud Infrastructure", "6.2", "6.8", "+9.7%"},
                        {"Marketing Campaigns", "5.1", "4.7", "-7.8%"},
                        {"Research & Development", "4.8", "5.2", "+8.3%"},
                        {"Office Operations", "3.1", "2.9", "-6.5%"},
                        {"Travel & Events", "1.5", "1.2", "-20.0%"}
                }
        );

        // Section 3: Growth Trends
        newPage();
        tocEntries.add(new TocEntry("3. Growth Trends", currentPage, 0));
        drawText("3. Growth Trends", fontBold, 16, DARK_BLUE);
        yPosition -= 6;
        drawWrappedText("The following charts illustrate growth trends across key metrics "
                + "over the past twelve months, demonstrating consistent upward "
                + "trajectory in all measured categories.", 10);

        Map<String, Double> monthlyRevenue = new LinkedHashMap<>();
        double[] revValues = {10.2, 10.8, 11.1, 12.4, 12.9, 13.5, 14.1, 14.8, 15.2, 15.8, 16.5, 17.2};
        String[] months = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
        for (int i = 0; i < months.length; i++) {
            monthlyRevenue.put(months[i], revValues[i]);
        }
        drawBarChart(monthlyRevenue, "Monthly Revenue Trend ($M)", "Month", "Revenue ($M)");

        // Section 4: Regional Performance
        newPage();
        tocEntries.add(new TocEntry("4. Regional Performance", currentPage, 0));
        drawText("4. Regional Performance", fontBold, 16, DARK_BLUE);
        yPosition -= 6;

        tocEntries.add(new TocEntry("4.1 Revenue by Region", currentPage, 1));
        drawText("4.1 Revenue by Region", fontBold, 13, DARK_BLUE);
        yPosition -= 4;
        drawTable(
                new String[]{"Region", "Revenue ($M)", "Growth (%)", "Market Share", "Customers"},
                new String[][]{
                        {"North America", "28.4", "+12.1%", "34.2%", "22,450"},
                        {"Europe", "19.7", "+18.5%", "23.7%", "15,820"},
                        {"Asia-Pacific", "15.3", "+25.3%", "18.4%", "12,100"},
                        {"Latin America", "8.9", "+31.2%", "10.7%", "7,240"},
                        {"Middle East", "5.6", "+14.8%", "6.7%", "4,180"},
                        {"Africa", "5.2", "+42.1%", "6.3%", "3,890"}
                }
        );

        Map<String, Double> regionalRevenue = new LinkedHashMap<>();
        regionalRevenue.put("N. America", 28.4);
        regionalRevenue.put("Europe", 19.7);
        regionalRevenue.put("Asia-Pac", 15.3);
        regionalRevenue.put("LATAM", 8.9);
        regionalRevenue.put("Mid East", 5.6);
        regionalRevenue.put("Africa", 5.2);
        drawBarChart(regionalRevenue, "Revenue by Region ($M)", "Region", "Revenue ($M)");

        // Section 5: Conclusions
        newPage();
        tocEntries.add(new TocEntry("5. Conclusions & Recommendations", currentPage, 0));
        drawText("5. Conclusions & Recommendations", fontBold, 16, DARK_BLUE);
        yPosition -= 6;
        drawWrappedText("Based on the analysis presented in this report, the organization "
                + "is well-positioned for continued growth. Key recommendations include:", 10);

        String[] recommendations = {
                "1. Increase investment in Asia-Pacific and African markets.",
                "2. Continue optimizing operational costs through automation.",
                "3. Expand the product portfolio for emerging customer needs.",
                "4. Invest in employee development programs.",
                "5. Establish a dedicated data analytics team."
        };
        for (String rec : recommendations) {
            drawWrappedText(rec, 10);
        }

        yPosition -= 15;
        drawText("This report was automatically generated using the PDF Report Generator.",
                fontItalic, 8, MEDIUM_GRAY);

        // Close content stream
        if (contentStream != null) {
            contentStream.close();
            contentStream = null;
        }

        // Write TOC on the TOC page
        PDPageContentStream tocCs = new PDPageContentStream(document, tocPage,
                PDPageContentStream.AppendMode.APPEND, true, true);
        float tocY = tocYStart;
        for (TocEntry entry : tocEntries) {
            float indent = entry.level == 0 ? 0 : 20;
            PDType1Font tocFont = entry.level == 0 ? fontBold : fontRegular;
            float fontSize = entry.level == 0 ? 12 : 10;
            int pn = pageNumbers.getOrDefault(entry.page, 0);

            tocCs.setNonStrokingColor(Color.BLACK);
            tocCs.beginText();
            tocCs.setFont(tocFont, fontSize);
            tocCs.newLineAtOffset(MARGIN + indent, tocY);
            tocCs.showText(entry.title);
            tocCs.endText();

            String pageStr = String.valueOf(pn);
            float pageStrW = fontRegular.getStringWidth(pageStr) / 1000 * fontSize;
            tocCs.beginText();
            tocCs.setFont(fontRegular, fontSize);
            tocCs.newLineAtOffset(MARGIN + CONTENT_WIDTH - pageStrW, tocY);
            tocCs.showText(pageStr);
            tocCs.endText();

            tocY -= fontSize + 8;
        }
        tocCs.close();

        // Build document outline (bookmarks)
        PDDocumentOutline outline = new PDDocumentOutline();
        for (TocEntry entry : tocEntries) {
            if (entry.level == 0) {
                PDOutlineItem item = new PDOutlineItem();
                item.setTitle(entry.title);
                PDPageFitWidthDestination dest = new PDPageFitWidthDestination();
                dest.setPage(entry.page);
                item.setDestination(dest);
                outline.addLast(item);
            }
        }
        document.getDocumentCatalog().setDocumentOutline(outline);

        // Draw headers/footers on all pages
        for (Map.Entry<PDPage, Integer> entry : pageNumbers.entrySet()) {
            drawHeaderFooter(entry.getKey(), entry.getValue());
        }

        // Export report data as JSON sidecar
        Gson gson = new GsonBuilder().setPrettyPrinting().create();
        Map<String, Object> metadata = new LinkedHashMap<>();
        metadata.put("title", title);
        metadata.put("author", author);
        metadata.put("generatedDate", LocalDate.now().toString());
        metadata.put("totalPages", pageCount);
        List<String> sections = new ArrayList<>();
        for (TocEntry e : tocEntries) sections.add(e.title);
        metadata.put("sections", sections);
        String json = gson.toJson(metadata);
        System.out.println("Report metadata:\n" + json);

        document.save(outputPath);
        document.close();
        System.out.println("Report generated: " + outputPath);
    }

    // -----------------------------------------------------------------------
    // TOC entry helper
    // -----------------------------------------------------------------------

    private static class TocEntry {
        final String title;
        final PDPage page;
        final int level;

        TocEntry(String title, PDPage page, int level) {
            this.title = title;
            this.page = page;
            this.level = level;
        }
    }

    // -----------------------------------------------------------------------
    // CLI entry point
    // -----------------------------------------------------------------------

    public static void main(String[] args) throws IOException {
        String output = "report.pdf";
        String title = "Annual Performance Report";
        String author = "PDF Report Generator";

        for (int i = 0; i < args.length; i++) {
            switch (args[i]) {
                case "-o": case "--output":
                    if (i + 1 < args.length) output = args[++i];
                    break;
                case "-t": case "--title":
                    if (i + 1 < args.length) title = args[++i];
                    break;
                case "-a": case "--author":
                    if (i + 1 < args.length) author = args[++i];
                    break;
                case "-h": case "--help":
                    System.out.println("Usage: PdfReportGenerator [-o output.pdf] [-t title] [-a author]");
                    return;
            }
        }

        PdfReportGenerator generator = new PdfReportGenerator(title, author);
        generator.generate(output);
    }
}