from distutils.core import setup
from distutils.extension import Extension

from Cython.Distutils import build_ext
from Cython.Compiler import Options
import Cython

import sys
import platform
import struct
import os

BITS = str(8 * struct.calcsize('P')) + "bit"

print("[setup.py] Python architecture: %s" % BITS)
print("[setup.py] Cython version: %s" % Cython.__version__)

# Stop on first error, otherwise hundreds of errors appear in the console.
Options.fast_fail = True

# Python version string: "27" or "32".
PYVER = str(sys.version_info.major) + str(sys.version_info.minor)

# Generate compile_time_constants.pxi
def CompileTimeConstants():
    print("[setup.py] Generating: compile_time_constants.pxi")
    with open("../../compile_time_constants.pxi", "w") as fd:
        fd.write('# This file was generated by setup.py\n')
        # A way around Python 3.2 bug: UNAME_SYSNAME is not set.
        fd.write('DEF UNAME_SYSNAME = "%s"\n' % platform.uname()[0])
        fd.write('DEF PY_MAJOR_VERSION = %s\n' % sys.version_info.major)
CompileTimeConstants()

# Windows SDK Lib directory.
# It's also hardcoded in compile.bat
if BITS == "32bit":
    winsdk_lib = r"C:\Program Files\Microsoft SDKs\Windows\v7.0\Lib"
elif BITS == "64bit":
    winsdk_lib = r"C:\Program Files\Microsoft SDKs\Windows\v7.0\Lib\x64"
if not os.path.exists(winsdk_lib):
    raise Exception("Windows SDK Lib directory not found: %s" % winsdk_lib)

ext_modules = [Extension(

    "cefpython_py%s" % PYVER,
    ["cefpython.pyx"],

    # Ignore the warning in the console:
    # > C:\Python27\lib\distutils\extension.py:133: UserWarning:
    # > Unknown Extension options: 'cython_directives' warnings.warn(msg)
    cython_directives={
        # Any conversion to unicode must be explicit using .decode().
        "c_string_type": "bytes",
        "c_string_encoding": "utf-8",
    },

    language='c++',

    include_dirs=[
        r'./../',
        r'./../../',
        r'./../../extern/',
        r'./../../extern/cef/',
    ],

    library_dirs=[
        winsdk_lib,
        r'./',
        r'./lib_%s' % (BITS),
        r'./../../client_handler/Release_py%s_%s/' % (PYVER, BITS),
        r'./../../subprocess/Release_py%s_%s/' % (PYVER, BITS),
        r'./../../cpp_utils/Release_%s/' % (BITS),
    ],

    libraries=[
        'libcef',
        'libcef_dll_wrapper_md',
        'User32',
        'client_handler_py%s_%s' % (PYVER, BITS),
        'libcefpythonapp_py%s_%s' % (PYVER, BITS),
        'cpp_utils_%s' % (BITS),
    ],

    extra_objects=[
        "cefpython.res"
    ],

    # /EHsc - using STL string, multimap and others that use C++ exceptions.
    #
    # /ignore:4217 - disable warnings such as this:
    #
    #   client_handler_py27_32bit.lib(client_handler.obj) : warning LNK4217:
    #   locally defined symbol _RemovePythonCallbacksForFrame imported in
    #   function "public: virtual bool __thiscall
    #   ClientHandler::OnProcessMessageReceived
    #
    # The above warning LNK4217 is caused by the warning below which occurs
    # when building the client_handler.lib static library:
    #
    #   cefpython.h(36) : warning C4190: 'RequestHandler_GetResourceHandler'
    #   has C-linkage specified, but returns UDT 'CefRefPtr' which is
    #   incompatible with C
    #
    # The C4190 warning is disabled with pragma in cefpython.h, see the
    # fix_cefpython_h.py script.

    extra_compile_args=['/EHsc'],
    extra_link_args=['/ignore:4217']
)]

setup(
    name = 'cefpython_py%s' % PYVER,
    cmdclass = {'build_ext': build_ext},
    ext_modules = ext_modules
)