#!/usr/bin/env python3

# -*- coding: utf-8 -*-

# Copyright (C) 2016-2018 g10 Code GmbH

# Copyright (C) 2015 Ben McGinnes <ben@adversary.org>

#

# This library is free software; you can redistribute it and/or

# modify it under the terms of the GNU Lesser General Public

# License as published by the Free Software Foundation; either

# version 2.1 of the License, or (at your option) any later version.

#

# This library is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# Lesser General Public License for more details.

#

# You should have received a copy of the GNU Lesser General Public

# License along with this library; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA

from __future__ import absolute_import, print_function, unicode_literals

import glob

import os

import os.path

import shutil

import subprocess

import sys

import sysconfig

from shutil import which

del absolute_import, print_function, unicode_literals

try:

    emacs = os.path.realpath(which("emacs"))

except TypeError as e:

    emacs = None

try:

    makeinfo = os.path.realpath(which("makeinfo"))

except TypeError as e:

    makeinfo = None

try:

    pandoc = os.path.realpath(which("pandoc"))

except TypeError as e:

    pandoc = None

try:

    texinfo = os.path.realpath(which("texinfo"))

except TypeError as e:

    texinfo = None

docsrc = glob.glob('doc/src/**/*', recursive=True)

for srcdoc in docsrc:

    process = subprocess.Popen([emacs, srcdoc, "--batch", "-f",

                                "org-texinfo-export-to-texinfo", "--kill"],

                                stdout=subprocess.PIPE)

    procom = process.communicate()

doctexi1 = glob.glob('doc/src/**/*.texi', recursive=True)

doctexi2 = []

doctexi3 = []

for texi in doctexi1:

    doctexi2.append(os.path.realpath(texi))

for texdoc in doctexi2:

    newtex = texdoc.replace("doc/src/", "doc/texinfo/")

    doctexi3.append(newtex)

    with open(texdoc, "r") as f:

        badtex = f.read()

    goodtex = badtex.replace("@documentencoding UTF-8\n",

                             "@documentencoding utf-8\n")

    with open(newtex, "w") as f:

        f.write(goodtex)

for srcdoc in docsrc:

    rstdoc = "{0}.rst".format(srcdoc.replace("doc/src/", "doc/rst/"))

    process = subprocess.Popen([pandoc, "-f", "org", "-t", "rst+smart", "-o",

                                rstdoc, srcdoc], stdout=subprocess.PIPE)

    procom = process.communicate()

with open("doc/rst/index.rst", "r") as f:

    genindex = f.readlines()

indextop = ['.. GPGME Python Bindings documentation master file, created by\n',

            '   sphinx-quickstart on Wed Dec  5 09:04:47 2018.\n',

            '   You can adapt this file completely to your liking, but it should at least\n',

            '   contain the root `toctree` directive.\n', '\n',

            'GPGME Python Bindings\n', '=====================\n', '\n',

            '.. toctree::\n', '   :maxdepth: 3\n', '   :caption: Contents:\n',

            '\n']

with open("doc/rst/index.rst", "w") as f:

    for line in indextop:

        f.write(line)

    for line in genindex[5:]:

        f.write(line)

with open("doc/rst/Makefile", "w") as f:

    f.write("""# Minimal makefile for Sphinx documentation

#

# You can set these variables from the command line.

SPHINXOPTS    =

SPHINXBUILD   = sphinx-build

SOURCEDIR     = .

BUILDDIR      = _build

# Put it first so that "make" without argument is like "make help".

help:

        @$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

.PHONY: help Makefile

# Catch-all target: route all unknown targets to Sphinx using the new

# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).

%: Makefile

        @$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

""")

info_path = os.path.realpath(sysconfig._PREFIX + "/share/info")

info_paths = os.environ["INFOPATH"].split(":")

if info_paths.count(info_path) == 0:

    info_paths.insert(0, info_path)

else:

    pass

for ipath in info_paths:

    if os.path.exists(os.path.realpath(ipath)) is False:

        info_paths.remove(ipath)

    else:

        pass

# Remove the old generated .texi files from the org source directory.

for texifile in doctexi2:

    os.remove(texifile)

print("""

You may now build your preferred documentation format using either:

 1. Sphinx in the doc/rst/ directory; and/or

 2. Texinfo or Makeinfo in the doc/texinfo/ directory.

Alternatively the original Org mode source files can be found in the doc/src/

directory.

""")