#!/usr/bin/env python
# -*- coding: utf-8 -*-

# ===============================================================================
# Copyright (c) 2012 - 2014, GPy authors (see AUTHORS.txt).
# Copyright (c) 2014, James Hensman, Max Zwiessele
# Copyright (c) 2015, Max Zwiessele
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
#
# * Neither the name of GPy nor the names of its
#   contributors may be used to endorse or promote products derived from
#   this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# ===============================================================================

from __future__ import print_function
import os
import sys
from setuptools import setup, Extension
import codecs

try:
    ModuleNotFoundError
except NameError:
    ModuleNotFoundError = ImportError


def read(fname):
    with codecs.open(fname, "r", "latin") as f:
        return f.read()


def read_to_rst(fname):
    try:
        import pypandoc

        rstname = "{}.{}".format(os.path.splitext(fname)[0], "rst")
        pypandoc.convert(read(fname), "rst", format="md", outputfile=rstname)
        with open(rstname, "r") as f:
            rststr = f.read()
        return rststr
        # return read(rstname)
    except ImportError:
        return read(fname)


desc = """

Please refer to the github homepage for detailed instructions on installation and usage.

"""

version_dummy = {}
exec(read("GPy/__version__.py"), version_dummy)
__version__ = version_dummy["__version__"]
del version_dummy


# Mac OS X Clang doesn't support OpenMP at the current time.
# This detects if we are building on a Mac
def ismac():
    return sys.platform[:6] == "darwin"


if ismac():
    compile_flags = [
        "-O3",
    ]
    link_args = []
else:
    compile_flags = ["-fopenmp", "-O3"]
    link_args = ["-lgomp"]

try:
    # So that we don't need numpy installed to determine it's a dependency.
    import numpy as np

    ext_mods = [
        Extension(
            name="GPy.kern.src.stationary_cython",
            sources=[
                "GPy/kern/src/stationary_cython.pyx",
                "GPy/kern/src/stationary_utils.c",
            ],
            include_dirs=[np.get_include(), "."],
            extra_compile_args=compile_flags,
            extra_link_args=link_args,
        ),
        Extension(
            name="GPy.util.choleskies_cython",
            sources=["GPy/util/choleskies_cython.pyx"],
            include_dirs=[np.get_include(), "."],
            extra_link_args=link_args,
            extra_compile_args=compile_flags,
        ),
        Extension(
            name="GPy.util.linalg_cython",
            sources=["GPy/util/linalg_cython.pyx"],
            include_dirs=[np.get_include(), "."],
            extra_compile_args=compile_flags,
            extra_link_args=link_args,
        ),
        Extension(
            name="GPy.kern.src.coregionalize_cython",
            sources=["GPy/kern/src/coregionalize_cython.pyx"],
            include_dirs=[np.get_include(), "."],
            extra_compile_args=compile_flags,
            extra_link_args=link_args,
        ),
        Extension(
            name="GPy.models.state_space_cython",
            sources=["GPy/models/state_space_cython.pyx"],
            include_dirs=[np.get_include(), "."],
            extra_compile_args=compile_flags,
            extra_link_args=link_args,
        ),
    ]
except ModuleNotFoundError:
    ext_mods = []

setup(
    version=__version__,
    author=read_to_rst("AUTHORS.txt"),
    ext_modules=ext_mods,
)


# Check config files and settings:
local_file = os.path.abspath(
    os.path.join(os.path.dirname(__file__), "GPy", "installation.cfg")
)
home = os.getenv("HOME") or os.getenv("USERPROFILE")
user_file = os.path.join(home, ".config", "GPy", "user.cfg")

print("")
try:
    if not os.path.exists(user_file):
        # Does an old config exist?
        old_user_file = os.path.join(home, ".gpy_user.cfg")
        if os.path.exists(old_user_file):
            # Move it to new location:
            print(
                "GPy: Found old config file, moving to new location {}".format(
                    user_file
                )
            )
            if not os.path.exists(os.path.dirname(user_file)):
                os.makedirs(os.path.dirname(user_file))
            os.rename(old_user_file, user_file)
        else:
            # No config file exists, save informative stub to user config folder:
            print("GPy: Saving user configuration file to {}".format(user_file))
            if not os.path.exists(os.path.dirname(user_file)):
                os.makedirs(os.path.dirname(user_file))
            with open(user_file, "w") as f:
                with open(local_file, "r") as l:
                    tmp = l.read()
                    f.write(tmp)
    else:
        print("GPy: User configuration file at location {}".format(user_file))
except:
    print("GPy: Could not write user configuration file {}".format(user_file))