use genpdf::Element as _;
use genpdf::{elements, style, fonts};

pub fn genpdf() -> Vec<u8> {
    let regular_bytes = include_bytes!("/usr/share/fonts/liberation/LiberationSans-Regular.ttf");
    let regular_font_data = fonts::FontData::new(regular_bytes.to_vec(), Some(printpdf::BuiltinFont::Helvetica)).expect("font data should be correct");

    let bold_bytes = include_bytes!("/usr/share/fonts/liberation/LiberationSans-Bold.ttf");
    let bold_font_data = fonts::FontData::new(bold_bytes.to_vec(), Some(printpdf::BuiltinFont::HelveticaBold)).expect("font data should be correct");

    let italic_bytes = include_bytes!("/usr/share/fonts/liberation/LiberationSans-Italic.ttf");
    let italic_font_data = fonts::FontData::new(italic_bytes.to_vec(), Some(printpdf::BuiltinFont::HelveticaOblique)).expect("font data should be correct");

    let bold_italic_bytes = include_bytes!("/usr/share/fonts/liberation/LiberationSans-BoldItalic.ttf");
    let bold_italic_font_data = fonts::FontData::new(bold_italic_bytes.to_vec(), Some(printpdf::BuiltinFont::HelveticaBoldOblique)).expect("font data should be correct");

    let font_family = fonts::FontFamily{ 
        regular: regular_font_data, 
        bold: bold_font_data, 
        italic: italic_font_data, 
        bold_italic: bold_italic_font_data 
    };

    let mut doc = genpdf::Document::new(font_family);

    doc.set_title("BCard test");
    doc.set_minimal_conformance();
    doc.set_margins(10);
    doc.set_line_spacing(1.25);

    #[cfg(feature = "hyphenation")]
    {
        use hyphenation::Load;

        doc.set_hyphenator(
            hyphenation::Standard::from_embedded(hyphenation::Language::EnglishUS)
                .expect("Failed to load hyphenation data"),
        );
    }

    doc.push(
        elements::Paragraph::new("genpdf Demo Document")
            .aligned(elements::Alignment::Center)
            .styled(style::Style::new().bold().with_font_size(20)),
    );

    // TODO fill doc with real data

    let mut buf: Vec<u8> = Vec::new();
    doc.render(&mut buf).expect("should render pdf");
    buf
}