using ObviousPDF;
using ObviousPDF.Accessibility;

var doc = new PdfDocument();

// Step 1: Required document metadata
doc.Info.Title = "Accessible Document";
doc.Language = "en-US";          // REQUIRED
doc.DisplayDocTitle = true;       // REQUIRED
doc.PdfUaConformance =
    PdfUaConformanceLevel.PdfUA1; // Declare conformance

// Step 2: Enable tagged PDF
var root = doc.EnableTaggedPdf();

// Step 3: Build structure tree
var sect = root.AddChild(StructureType.Sect);
var h1 = sect.AddChild(StructureType.H1);
var pIntro = sect.AddChild(StructureType.P);

// List structure
var list = sect.AddChild(StructureType.L);
var li1 = list.AddChild(StructureType.LI);
var li1Lbl = li1.AddChild(StructureType.Lbl);
var li1Body = li1.AddChild(StructureType.LBody);

// Step 4: Add tagged content to page
var page = doc.AddPage();

// Decorative header — ARTIFACT (not structural)
page.BeginArtifact(PdfArtifactType.Layout);
page.FillRectangle(0, 760, 612, 32,
    new PdfDrawOptions {
        FillColor = PdfColor.FromRgb(0.15, 0.3, 0.6)
    });
page.EndArtifact();

// Tagged heading
page.AddTaggedText(h1, "Welcome to ObviousPDF",
    72, 720, new PdfTextOptions {
        Font = StandardFont.HelveticaBold,
        FontSize = 22
    });

// Tagged paragraph
page.AddTaggedText(pIntro,
    "This document is fully accessible.",
    72, 690);

// Tagged list items
page.AddTaggedText(li1Lbl, "•", 82, 660);
page.AddTaggedText(li1Body,
    "Tagged PDF for screen readers",
    95, 660);

// Page number — ARTIFACT
page.AddArtifactText("Page 1", 285, 30,
    PdfArtifactType.Pagination);

// Step 5: Validate
var checker = new PdfAccessibilityChecker();
var report = checker.Check(doc);
// report.IsFullyCompliant == true ✅

doc.Save("accessible.pdf");