#!/usr/bin/env python3

import os
from typing import Dict, Set, Tuple

from sphinx.builders.singlehtml import SingleFileHTMLBuilder
from sphinx.util import progress_message
from sphinx.util.osutil import os_path
from sphinx.locale import __

import weasyprint


class WeasyPrintPDFBuilder(SingleFileHTMLBuilder):
    name = 'weasyprint'
    epilog = __('The PDF file has been saved in %(outdir)s.')
    embedded = True
    search = False

    def _get_translations_js(self) -> str:
        return

    def copy_translation_js(self) -> None:
        return

    def copy_stemmer_js(self) -> None:
        return

    def copy_html_favicon(self) -> None:
        return

    def get_theme_config(self) -> Tuple[str, Dict]:
        return (
            self.config.weasyprint_theme,
            self.config.weasyprint_theme_options
        )

    def init_js_files(self) -> None:
        return

    def add_js_file(self, filename: str, **kwargs: str) -> None:
        return

    def prepare_writing(self, docnames: Set[str]) -> None:
        super(WeasyPrintPDFBuilder, self).prepare_writing(docnames)
        if self.config.weasyprint_style is not None:
            stylename = self.config.weasyprint_style
        elif self.theme:
            stylename = self.theme.get_config('theme', 'stylesheet')
        else:
            stylename = 'default.css'

        self.globalcontext['use_opensearch'] = False
        self.globalcontext['docstitle'] = self.config.weasyprint_title
        self.globalcontext['shorttitle'] = self.config.weasyprint_short_title
        self.globalcontext['show_copyright'] = self.config.weasyprint_show_copyright
        self.globalcontext['show_sphinx'] = self.config.weasyprint_show_sphinx
        self.globalcontext['style'] = stylename
        self.globalcontext['favicon'] = None

    def finish(self) -> None:
        super(WeasyPrintPDFBuilder, self).finish()
        progress_message('Starting conversion to PDF with WeasyPrint')
        infile = os.path.join(
            self.outdir,
            os_path(self.config.master_doc) + self.out_suffix
        )
        outfile = os.path.join(
            self.outdir,
            self.config.weasyprint_basename + '.pdf'
        )
        weasy_html = weasyprint.HTML(infile)
        print('*********************')
        print('%s ----- %s', (infile, outfile))
        weasy_html.write_pdf(outfile)
        # progress_message('Signing PDF')