"""Util functions to render a template."""

from babel.support import Translations
from htmlmin.minify import html_minify
from jinja2 import Environment
from jinja2 import FileSystemLoader

import config


env = Environment(
    loader=FileSystemLoader(config.TEMPLATE_PATH),
    extensions=['jinja2.ext.i18n'])


def render_template(template_name, context, user_locale):
    """Render a Jinja2 template.

    Args:
        template_name (str): the template name
        context (dict): the context to extend the template
        user_locale (str): the user's locale (e.g. "en")
    Returns:
        str: the rendered template
    """
    translations = Translations.load(config.I18N_FOLDER_NAME, [user_locale])
    env.install_gettext_translations(translations)

    template_filename = template_name + '.html'
    template = env.get_template(template_filename)

    return html_minify(template.render(**context))