"""Utilities for generating a PDF of an HTML page."""

from jinja2 import Environment, FileSystemLoader, select_autoescape
import pdfkit


def generate_pdf(params: dict) -> bytes:
    """PDF generation from params via html template."""
    jinja_env = Environment(
        loader=FileSystemLoader('payee/templates'), autoescape=select_autoescape()
    )

    template = jinja_env.get_template('tax_details.html')

    page_options = {
        'page-size': 'A4',
        'margin-top': '0.5in',
        'margin-right': '0.6in',
        'margin-bottom': '0.5in',
        'margin-left': '0.5in',
        'encoding': 'UTF-8',
    }

    pdf_bytes = pdfkit.from_string(template.render(**params), options=page_options)

    return pdf_bytes