#!/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))