Create, convert, and validate archival PDFs

use pdfluent::{PdfDocument, PdfAProfile, CompressOptions};

fn main() -> pdfluent::Result<()> {
    let mut doc = PdfDocument::open("report.pdf")?;

    // Check PDF/A conformance for long-term archiving
    let report = doc.validate_pdfa(PdfAProfile::A2b)?;
    println!("PDF/A-2b compliant: {}", report.is_compliant());
    for v in &report.violations {
        println!("[{}] {}", v.rule, v.message);
    }

    // Subset fonts and compress for a smaller archival file
    doc.subset_fonts()?;
    doc.compress(CompressOptions::archival())?;
    doc.save("report-archival.pdf")?;
    Ok(())
}

use pdfluent::{PdfDocument, PdfAProfile};

fn main() -> pdfluent::Result<()> {
    let doc = PdfDocument::open("archive.pdf")?;

    let report = doc.validate_pdfa(PdfAProfile::A2b)?;
    println!("Compliant: {}", report.is_compliant());
    println!("Violations: {}", report.violations.len());

    for v in &report.violations {
        println!("[{}] {} (page {:?})", v.rule, v.message, v.page);
    }
    Ok(())
}

use pdfluent::{PdfDocument, accessibility::{AltText, Standard, Validator}};

fn check_and_fix_accessibility(path: &str) -> anyhow::Result<()> {
    let mut doc = PdfDocument::open(path)?;

    // Validate against PDF/UA-1 (ISO 14289-1)
    let validator = Validator::new(Standard::PdfUa1);
    let report = validator.validate(&doc)?;

    println!("{} violation(s):", report.violations().len());
    for v in report.violations() {
        println!("  [{}] {}", v.clause(), v.message());
    }

    // Add alt text to untagged images
    for mut img in doc.images_without_alt_text() {
        img.set_alt_text(AltText::new("Decorative figure"))?;
    }

    doc.save(path)?;
    Ok(())
}