R4PDF

using R4PDF;

var generator = new PdfGenerator();

var template = """
{
    "pages": [{
        "body": {
            "elements": [
                { "type": "text", "text": "Hello, World!", "fontSize": 24, "fontWeight": "bold" },
                { "type": "paragraph", "content": "Generated from a JSON template." }
            ]
        }
    }]
}
""";

byte[] pdf = generator.Generate(template);
generator.GenerateToFile(template, "output.pdf");

var template = """
{
    "pages": [{
        "body": {
            "elements": [
                { "type": "text", "text": "Hello, ${customer.name}!" },
                { "type": "text", "text": "Order #${order.id}" },
                { "type": "text", "text": "Total: ${order.total}" }
            ]
        }
    }]
}
""";

var data = """
{
    "customer": { "name": "John Doe" },
    "order": { "id": "12345", "total": "$99.95" }
}
""";

byte[] pdf = generator.Generate(template, data);

{
    "metadata": {
        "title": "My Report",
        "author": "Jane Doe",
        "subject": "Quarterly Summary",
        "keywords": "report finance"
    },
    "settings": {
        "pageSize": "A4",
        "orientation": "Portrait",
        "margins": { "top": "20mm", "bottom": "20mm", "left": "15mm", "right": "15mm" }
    },
    "styles": {
        "heading": { "fontSize": 20, "fontWeight": "bold", "color": "#003366" }
    },
    "pages": [ ... ]
}

{
    "header": {
        "height": "30mm",
        "background": "#F8F9FA",
        "elements": [
            { "type": "text", "text": "Company Report", "fontSize": 12, "color": "#666" }
        ]
    },
    "body": {
        "elements": [{ "type": "text", "text": "Main content", "fontSize": 14 }]
    },
    "footer": {
        "height": "20mm",
        "elements": [
            { "type": "text", "text": "Page {pageNumber} of {pageCount}", "alignment": "center", "fontSize": 9 }
        ]
    }
}

{
    "styles": {
        "heading": { "fontSize": 20, "fontWeight": "bold", "color": "#003366" },
        "body":    { "fontSize": 11, "color": "#333", "lineHeight": 1.5 },
        "caption": { "fontSize": 9,  "color": "#888", "fontStyle": "italic" }
    },
    "pages": [{
        "body": {
            "elements": [
                { "type": "text", "text": "Title", "style": "heading" },
                { "type": "paragraph", "content": "Body text...", "style": "body" },

                // Direct property overrides a named style:
                { "type": "text", "text": "Red Title", "style": "heading", "color": "#CC0000" }
            ]
        }
    }]
}

{
    "settings": { "pageSize": "A4", "orientation": "Portrait" },
    "pages": [
        { "body": { "elements": [{ "type": "text", "text": "Portrait A4" }] } },
        {
            "settings": { "pageSize": "A3", "orientation": "Landscape" },
            "body": { "elements": [{ "type": "text", "text": "Landscape A3" }] }
        }
    ]
}

"footer": {
    "height": "15mm",
    "elements": [
        { "type": "line", "color": "#CCC", "strokeWidth": "0.5pt" },
        { "type": "text", "text": "Page {pageNumber} of {pageCount}", "alignment": "center", "fontSize": 9 }
    ]
}

using R4PDF;
var generator = new PdfGenerator();

// ── byte[] ───────────────────────────────────────────────
byte[] pdf = generator.Generate(template);
byte[] pdf = generator.Generate(template, data);

// ── Stream ───────────────────────────────────────────────
generator.GenerateToStream(template, stream);
generator.GenerateToStream(template, data, stream);

// ── File ─────────────────────────────────────────────────
generator.GenerateToFile(template, "output.pdf");
generator.GenerateToFile(template, data, "output.pdf");

{
    "metadata": { "title": "Invoice #2024-001", "author": "Acme Corp" },
    "settings": {
        "pageSize": "A4",
        "margins": { "top": "20mm", "bottom": "20mm", "left": "15mm", "right": "15mm" }
    },
    "styles": {
        "title":    { "fontSize": 24, "fontWeight": "bold", "color": "#003366" },
        "subtitle": { "fontSize": 14, "color": "#666" },
        "label":    { "fontSize": 10, "fontWeight": "bold", "color": "#333" },
        "value":    { "fontSize": 10, "color": "#000" },
        "footer":   { "fontSize": 9,  "color": "#999", "alignment": "center" }
    },
    "pages": [{
        "header": {
            "height": "40mm",
            "elements": [
                { "type": "text", "text": "ACME CORPORATION", "style": "title" },
                { "type": "text", "text": "123 Business Ave, New York, NY", "style": "subtitle" },
                { "type": "line", "color": "#003366", "strokeWidth": "2pt" }
            ]
        },
        "body": {
            "elements": [
                { "type": "text", "text": "INVOICE", "fontSize": 20, "fontWeight": "bold", "color": "#003366" },
                { "type": "text", "text": "Invoice #: ${invoice.number}", "style": "value" },
                { "type": "text", "text": "Date: ${invoice.date}", "style": "value" },
                { "type": "text", "text": "" },
                { "type": "text", "text": "Bill To:", "style": "label" },
                { "type": "text", "text": "${customer.name}", "style": "value" },
                { "type": "text", "text": "" },
                {
                    "type": "table",
                    "columns": [
                        { "name": "Description", "width": "45%" },
                        { "name": "Qty",  "width": "15%", "alignment": "center" },
                        { "name": "Price","width": "20%", "alignment": "right" },
                        { "name": "Total","width": "20%", "alignment": "right" }
                    ],
                    "rows": [
                        { "cells": ["Web Development", "40", "$150", "$6,000"] },
                        { "cells": ["UI/UX Design",    "20", "$120", "$2,400"] },
                        { "cells": ["Project Mgmt",    "10", "$100", "$1,000"] }
                    ],
                    "headerStyle": { "backgroundColor": "#003366", "color": "#FFF", "fontWeight": "bold" },
                    "alternateRowColors": true,
                    "alternateColor": "#F0F4F8"
                },
                { "type": "line", "color": "#CCC", "strokeWidth": "0.5pt" },
                { "type": "text", "text": "Total: $9,400.00", "fontSize": 14, "fontWeight": "bold", "alignment": "right", "color": "#003366" }
            ]
        },
        "footer": {
            "height": "20mm",
            "elements": [
                { "type": "line", "color": "#CCC", "strokeWidth": "0.5pt" },
                { "type": "text", "text": "Thank you for your business!", "style": "footer" },
                { "type": "text", "text": "Page {pageNumber} of {pageCount}", "style": "footer" }
            ]
        }
    }]
}

using R4PDF;

var generator = new PdfGenerator();
var template = File.ReadAllText("invoice-template.json");
var data = """
{
    "invoice": { "number": "2024-001", "date": "2024-12-01" },
    "customer": { "name": "John Doe" }
}
""";

generator.GenerateToFile(template, data, "invoice.pdf");

using R4PDF;
using R4PDF.Exceptions;

try
{
    var generator = new PdfGenerator();
    byte[] pdf = generator.Generate(template, data);
}
catch (PdfGenerationException ex)
{
    Console.WriteLine($"PDF generation failed: {ex.Message}");
    // ex.InnerException contains the original error
}