#
# Kivy - Cross-platform UI framework
# https://kivy.org/
#

import sys
build_examples = False
if "--build_examples" in sys.argv:
    build_examples = True
    sys.argv.remove("--build_examples")

from kivy.utils import pi_version
from copy import deepcopy
import os
from os.path import join, dirname, sep, exists, basename, isdir
from os import walk, environ, makedirs
from distutils.command.build_ext import build_ext
from distutils.version import LooseVersion
from distutils.sysconfig import get_python_inc
from collections import OrderedDict
from time import sleep
from sysconfig import get_paths
from pathlib import Path
import logging
from setuptools import setup, Extension, find_packages


if sys.version_info[0] == 2:
    logging.critical(
        'Unsupported Python version detected!: Kivy 2.0.0 and higher does not '
        'support Python 2. Please upgrade to Python 3, or downgrade Kivy to '
        '1.11.1 - the last Kivy release that still supports Python 2.')


def ver_equal(self, other):
    return self.version == other


# fix error with py3's LooseVersion comparisons
LooseVersion.__eq__ = ver_equal


def get_description():
    with open(join(dirname(__file__), 'README.md'), 'rb') as fileh:
        return fileh.read().decode("utf8").replace('\r\n', '\n')


def getoutput(cmd, env=None):
    import subprocess
    p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE,
                         stderr=subprocess.PIPE, env=env)
    p.wait()
    if p.returncode:  # if not returncode == 0
        print('WARNING: A problem occurred while running {0} (code {1})\n'
              .format(cmd, p.returncode))
        stderr_content = p.stderr.read()
        if stderr_content:
            print('{0}\n'.format(stderr_content))
        return ""
    return p.stdout.read()


def pkgconfig(*packages, **kw):
    flag_map = {'-I': 'include_dirs', '-L': 'library_dirs', '-l': 'libraries'}
    lenviron = None
    pconfig = join(sys.prefix, 'libs', 'pkgconfig')

    if isdir(pconfig):
        lenviron = environ.copy()
        lenviron['PKG_CONFIG_PATH'] = '{};{}'.format(
            environ.get('PKG_CONFIG_PATH', ''), pconfig)
    cmd = 'pkg-config --libs --cflags {}'.format(' '.join(packages))
    results = getoutput(cmd, lenviron).split()
    for token in results:
        ext = token[:2].decode('utf-8')
        flag = flag_map.get(ext)
        if not flag:
            continue
        kw.setdefault(flag, []).append(token[2:].decode('utf-8'))
    return kw


def get_isolated_env_paths():
    try:
        # sdl2_dev is installed before setup.py is run, when installing from
        # source due to pyproject.toml. However, it is installed to a
        # pip isolated env, which we need to add to compiler
        import kivy_deps.sdl2_dev as sdl2_dev
    except ImportError:
        return [], []

    root = os.path.abspath(join(sdl2_dev.__path__[0], '../../../..'))
    includes = [join(root, 'Include')] if isdir(join(root, 'Include')) else []
    libs = [join(root, 'libs')] if isdir(join(root, 'libs')) else []
    return includes, libs


# -----------------------------------------------------------------------------
# Determine on which platform we are

build_examples = build_examples or \
    os.environ.get('KIVY_BUILD_EXAMPLES', '0') == '1'

platform = sys.platform

# Detect Python for android project (http://github.com/kivy/python-for-android)
ndkplatform = environ.get('NDKPLATFORM')
if ndkplatform is not None and environ.get('LIBLINK'):
    platform = 'android'
kivy_ios_root = environ.get('KIVYIOSROOT', None)
if kivy_ios_root is not None:
    platform = 'ios'
# proprietary broadcom video core drivers
if exists('/opt/vc/include/bcm_host.h'):
    # The proprietary broadcom video core drivers are not available on the
    # Raspberry Pi 4
    if (pi_version or 4) < 4:
        platform = 'rpi'
# use mesa video core drivers
if environ.get('VIDEOCOREMESA', None) == '1':
    platform = 'vc'
mali_paths = (
    '/usr/lib/arm-linux-gnueabihf/libMali.so',
    '/usr/lib/arm-linux-gnueabihf/mali-egl/libmali.so',
    '/usr/local/mali-egl/libmali.so')
if any((exists(path) for path in mali_paths)):
    platform = 'mali'

# Needed when cross-compiling
if environ.get('KIVY_CROSS_PLATFORM'):
    platform = environ.get('KIVY_CROSS_PLATFORM')

# -----------------------------------------------------------------------------
# Detect options
#
c_options = Ordered
Dict()
c_options['use_rpi'] = platform == 'rpi'
c_options['use_egl'] = False
c_options['use_opengl_es2'] = None
c_options['use_opengl_mock'] = environ.get('READTHEDOCS', None) == 'True'
c_options['use_sdl2'] = None
c_options['use_pangoft2'] = None
c_options['use_ios'] = False
c_options['use_android'] = False
c_option
s['use_mesagl'] = False
c_options['use_x11'] = False
c_options['use_wayland'] = False
c_options['use_gstreamer'] = None
c_options['use_avfoundation'] = platform in ['darwin', 'ios']
c_options['use_osx_frameworks'] = platform == 'darwin'
c_options['debug_gl'] = False

# Set the alpha size, this will be 0 on the Raspberry Pi and 8 on all other
# platforms, so SDL2 works without X11
c_options['kivy_sdl_gl_alpha_size'] = 8 if pi_version is None else 0

# now check if environ is changing the default values
for key in list(c_options.keys()):
    ukey = key.upper()
    if ukey in environ:
        # kivy_sdl_gl_alpha_size should be an integer, the rest are booleans
        value = int(environ[ukey])
        if key != 'kivy_sdl_gl_alpha_size':
            value = bool(value)
        print('Environ change {0} -> {1}'.format(key, value))
        c_options[key] = value

use_embed_signature = environ.get('USE_EMBEDSIGNATURE', '0') == '1'
use_embed_signature = use_embed_signature or bool(
    platform not in ('ios', 'android'))

# -----------------------------------------------------------------------------
# We want to be able to install kivy as a wheel without a dependency
# on cython, but we also want to use cython where possible as a setup
# time dependency through `pyproject.toml` if building from source.

# There are issues with using cython at all on some platforms;
# exclude them from using or declaring cython.

# This determines whether Cython specific functionality may be used.
can_use_cython = True

if platform in ('ios', 'android'):
    # NEVER use or declare cython on these platforms
    print('Not using cython on %s' % platform)
    can_use_cython = False


# -----------------------------------------------------------------------------
# Setup classes

# the build path where kivy is being compiled
src_path = build_path = dirname(__file__)
print("Current directory is: {}".format(os.getcwd()))
print("Source and initial build directory is: {}".format(src_path))

# __version__ is imported by exec, but help linter not complain
__version__ = None
with open(join(src_path, 'kivy', '_version.py'), encoding="utf-8") as f:
    exec(f.read())


class KivyBuildExt(build_ext, object):

    def __new__(cls, *a, **kw):
        # Note how this class is declared as a subclass of distutils
        # build_ext as the Cython version may not be available in the
        # environment it is initially started in. However, if Cython
        # can be used, setuptools will bring Cython into the environment
        # thus its version of build_ext will become available.
        # The reason why this is done as a __new__ rather than through a
        # factory function is because there are distutils functions that check
        # the values provided by cmdclass with issublcass, and so it would
        # result in an exception.
        # The following essentially supply a dynamically generated subclass
        # that mix in the cython version of build_ext so that the
        # functionality provided will also be executed.
        if can_use_cython:
            from Cython.Distutils import build_ext as cython_build_ext
            build_ext_cls = type(
                'KivyBuildExt', (KivyBuildExt, cython_build_ext), {})
            return super(KivyBuildExt, cls).__new__(build_ext_cls)
        else:
            return super(KivyBuildExt, cls).__new__(cls)

    def finalize_options(self):
        retval = super(KivyBuildE