# -*- mode: python; coding: utf-8 -*-
# Copyright (c) 2018 Radio Astronomy Software Group
# Licensed under the 2-clause BSD License

from __future__ import absolute_import, division, print_function

import glob
import os
import io
import sys
import platform
from setuptools import setup, Extension
from setuptools.command.build_ext import build_ext
from distutils.sysconfig import get_config_var
from distutils.version import LooseVersion

# When setting up, the binary extension modules haven't yet been built, so
# without a workaround we can't use the pyuvdata code to get the version.
os.environ["PYUVDATA_IGNORE_EXTMOD_IMPORT_FAIL"] = "1"


def branch_scheme(version):
    """Local version scheme that adds the branch name for absolute reproducibility."""
    if version.exact or version.node is None:
        return version.format_choice("", "+d{time:{time_format}}", time_format="%Y%m%d")
    else:
        if version.branch == "master":
            return version.format_choice("+{node}", "+{node}.dirty")
        else:
            return version.format_choice("+{node}.{branch}", "+{node}.{branch}.dirty")


# this solution works for `pip install .`` but not `python setup.py install`...
class CustomBuildExtCommand(build_ext):
    """build_ext command for use when numpy headers are needed."""

    def run(self):

        # Import numpy here, only when headers are needed
        import numpy

        # Add numpy headers to include_dirs
        self.include_dirs.append(numpy.get_include())

        # Call original build_ext command
        build_ext.run(self)


with io.open("README.md", "r", encoding="utf-8") as readme_file:
    readme = readme_file.read()


def is_platform_mac():
    return sys.platform == "darwin"


# For mac, ensure extensions are built for macos 10.9 when compiling on a
# 10.9 system or above, overriding distuitls behaviour which is to target
# the version that python was built for. This may be overridden by setting
# MACOSX_DEPLOYMENT_TARGET before calling setup.py
# implementation based on pandas, see https://github.com/pandas-dev/pandas/issues/23424
if is_platform_mac():
    if "MACOSX_DEPLOYMENT_TARGET" not in os.environ:
        current_system = LooseVersion(platform.mac_ver()[0])
        python_target = LooseVersion(get_config_var("MACOSX_DEPLOYMENT_TARGET"))
        if python_target < "10.9" and current_system >= "10.9":
            os.environ["MACOSX_DEPLOYMENT_TARGET"] = "10.9"

global_c_macros = [
    ("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION"),
]

casa_reqs = ["python-casacore"]
healpix_reqs = ["astropy_healpix"]
cst_reqs = ["pyyaml"]
test_reqs = (
    casa_reqs
    + healpix_reqs
    + cst_reqs
    + ["pytest", "pytest-cases", "pytest-cov", "coverage", "pre-commit"]
)
doc_reqs = ["sphinx", "pypandoc"]

setup_args = {
    "name": "pyuvdata",
    "author": "Radio Astronomy Software Group",
    "url": "https://github.com/RadioAstronomySoftwareGroup/pyuvdata",
    "license": "BSD",
    "description": "an interface for astronomical interferometeric datasets in python",
    "long_description": readme,
    "long_description_content_type": "text/markdown",
    "package_dir": {"pyuvdata": "pyuvdata"},
    "packages": [
        "pyuvdata",
        "pyuvdata.tests",
        "pyuvdata.uvbeam",
        "pyuvdata.uvcal",
        "pyuvdata.uvdata",
        "pyuvdata.uvflag",
    ],
    "cmdclass": {"build_ext": CustomBuildExtCommand},
    "ext_modules": [
        Extension(
            "pyuvdata._miriad",
            sources=[
                "pyuvdata/uvdata/src/miriad_wrap.cpp",
                "pyuvdata/uvdata/src/uvio.c",
                "pyuvdata/uvdata/src/hio.c",
                "pyuvdata/uvdata/src/pack.c",
                "pyuvdata/uvdata/src/bug.c",
                "pyuvdata/uvdata/src/dio.c",
                "pyuvdata/uvdata/src/headio.c",
                "pyuvdata/uvdata/src/maskio.c",
            ],
            define_macros=global_c_macros,
            include_dirs=["pyuvdata/uvdata/src"],
        )
    ],
    "scripts": [fl for fl in glob.glob("scripts/*") if not os.path.isdir(fl)],
    "use_scm_version": {"local_scheme": branch_scheme},
    "include_package_data": True,
    "install_requires": ["numpy>=1.15", "scipy", "astropy>=3.2.3", "h5py"],
    "tests_require": ["pytest", "pytest-cases"],
    "extras_require": {
        "casa": casa_reqs,
        "healpix": healpix_reqs,
        "cst": cst_reqs,
        "all": casa_reqs + healpix_reqs + cst_reqs,
        "test": test_reqs,
        "doc": doc_reqs,
        "dev": test_reqs + doc_reqs,
    },
    "classifiers": [
        "Development Status :: 5 - Production/Stable",
        "Intended Audience :: Science/Research",
        "License :: OSI Approved :: BSD License",
        "Programming Language :: Python :: 3.6",
        "Programming Language :: Python :: 3.7",
        "Programming Language :: Python :: 3.8",
        "Topic :: Scientific/Engineering :: Astronomy",
    ],
    "keywords": "radio astronomy interferometry",
}

if __name__ == "__main__":
    setup(**setup_args)