# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import os
from spack import *


class Gdl(CMakePackage):
    """A free and open-source IDL/PV-WAVE compiler.

    GNU Data Language (GDL) is a free/libre/open source incremental compiler
    compatible with IDL and to some extent with PV-WAVE.
    """

    homepage = "https://github.com/gnudatalanguage/gdl"
    url      = "https://github.com/gnudatalanguage/gdl/archive/v0.9.9.tar.gz"

    version('0.9.9', sha256='ad5de3fec095a5c58b46338dcc7367d2565c093794ab1bbcf180bba1a712cf14')
    version('0.9.8', sha256='0e22df7314feaf18a76ae39ee57eea2ac8c3633bc095acbc25e1e07277d7c98b')

    variant('graphicsmagick',
            default=False,
            description='Enable GraphicsMagick')

    variant('hdf4', default=False, description='Enable HDF4')
    variant('hdf5', default=True, description='Enable HDF5')
    variant('openmp', default=True, description='Enable OpenMP')
    variant('proj', default=True, description='Enable LIBPROJ4')
    variant('embed_python', default=False, description='Ability to embed Python within GDL')
    variant('python', default=False, description='Build the GDL Python module')
    variant('wx', default=False, description='Enable WxWidgets')
    variant('x11', default=False, description='Enable X11')

    extends('python', when='+python')

    depends_on('cmake@3:', type='build')
    depends_on('graphicsmagick', when='+graphicsmagick')
    depends_on('hdf', when='+hdf4')
    depends_on('hdf5', when='+hdf5')
    depends_on('libx11', when='+x11')
    depends_on('plplot+wx', when='+wx@:5.11')
    depends_on('plplot+wx+wxold', when='+wx@5.12:')
    depends_on('plplot~wx', when='~wx')
    # Too many dependencies to test if GDL supports PROJ.6,
    # so restricting to old API
    depends_on('proj@:5', when='+proj')
    depends_on('py-numpy', type=('build', 'run'), when='+embed_python')
    depends_on('python@2.7:2.8', type=('build', 'run'), when='+embed_python')
    depends_on('wxwidgets', when='+wx')

    depends_on('eigen')
    depends_on('fftw')
    depends_on('gsl')
    depends_on('jpeg')
    depends_on('libice')
    depends_on('libsm')
    depends_on('libxinerama')
    depends_on('libxxf86vm')
    depends_on('netcdf')
    depends_on('pslib')
    depends_on('readline')

    conflicts('+python', when='~embed_python')

    # Building the Python module requires patches currently targetting 0.9.8
    # othwerwise asking for the Python module *only* builds the Python module
    conflicts('+python', when='@:0.9.7,0.9.9:')

    # Allows building gdl as a shared library to in turn allow building
    # both the executable and the Python module
    patch('https://sources.debian.org/data/main/g/gnudatalanguage/0.9.8-7/debian/patches/Create-a-shared-library.patch',
          sha256='bb380394c8ea2602404d8cd18047b93cf00fdb73b83d389f30100dd4b0e1a05c',
          when='@0.9.8')
    patch('Always-build-antlr-as-shared-library.patch',
          sha256='f40c06e8a8f1977780787f58885590affd7e382007cb677d2fb4723aaadd415c',
          when='@0.9.8')

    def cmake_args(self):
        args = []

        # GraphicsMagick covers the same features as ImageMagick and
        # only version 6 of ImageMagick is supported (version 7 is packaged)
        args += ['-DMAGICK=OFF']

        if '+graphicsmagick' in self.spec:
            args += ['-DGRAPHICSMAGICK=ON']
        else:
            args += ['-DGRAPHICSMAGICK=OFF']

        if '+hdf4' in self.spec:
            args += ['-DHDF=ON']
        else:
            args += ['-DHDF=OFF']

        if '+hdf5' in self.spec:
            args += ['-DHDF5=ON']
        else:
            args += ['-DHDF5=OFF']

        if '+openmp' in self.spec:
            args += ['-DOPENMP=ON']
        else:
            args += ['-DOPENMP=OFF']

        if '+proj' in self.spec:
            args += [
                '-DLIBPROJ4=ON',
                '-DLIBPROJ4DIR={0}'.format(self.spec['proj'].prefix)
            ]
        else:
            args += ['-DLIBPROJ4=OFF']

        if '+embed_python' in self.spec:
            args += ['-DPYTHON=ON']
        else:
            args += ['-DPYTHON=OFF']

        if '+python' in self.spec:
            args += ['-DPYTHON_MODULE=ON']
        else:
            args += ['-DPYTHON_MODULE=OFF']

        if '+wx' in self.spec:
            args += ['-DWXWIDGETS=ON']
        else:
            args += ['-DWXWIDGETS=OFF']

        if '+x11' in self.spec:
            args += ['-DX11=ON']
        else:
            args += ['-DX11=OFF']

        return args

    @run_after('install')
    def post_install(self):
        if '+python' in self.spec:
            # gdl installs the python module into prefix/lib/site-python
            # move it to the standard location
            src = os.path.join(
                self.spec.prefix.lib,
                'site-python')
            dst = site_packages_dir
            if os.path.isdir(src):
                if not os.path.isdir(dst):
                    mkdirp(dst)
                for f in os.listdir(src):
                    os.rename(os.path.join(src, f),
                              os.path.join(dst, f))
