# -*- coding: utf-8 -*-
#
# This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
#

from copy import deepcopy
import os
import subprocess
from tempfile import NamedTemporaryFile

from librarian import OutputFile


def transform(wldoc, verbose=False, sample=None, cover=None,
              use_kindlegen=False, flags=None, hyphenate=True, ilustr_path=''):
    """ produces a MOBI file

    wldoc: a WLDocument
    sample=n: generate sample e-book (with at least n paragraphs)
    cover: a cover.Cover factory overriding default
    flags: less-advertising,
    """

    document = deepcopy(wldoc)
    del wldoc

    epub = document.as_epub(verbose=verbose, sample=sample,
                            html_toc=True, cover=cover or True, flags=flags,
                            hyphenate=hyphenate, ilustr_path=ilustr_path, output_type='mobi')
    if verbose:
        kwargs = {}
    else:
        devnull = open("/dev/null", 'w')
        kwargs = {"stdout": devnull, "stderr": devnull}

    output_file = NamedTemporaryFile(prefix='librarian', suffix='.mobi',
                                     delete=False)
    output_file.close()

    if use_kindlegen:
        output_file_basename = os.path.basename(output_file.name)
        subprocess.check_call(['kindlegen', '-c2', epub.get_filename(),
                              '-o', output_file_basename], **kwargs)
    else:
        subprocess.check_call(['ebook-convert', epub.get_filename(),
                               output_file.name, '--no-inline-toc',
                               '--mobi-file-type=both',
                               '--mobi-ignore-margins'], **kwargs)
    return OutputFile.from_filename(output_file.name)