from pythonforandroid.toolchain import Recipe, shprint, current_directory, ArchARM
from os.path import exists, join, realpath
from os import uname
import glob
import sh
import os


class LibGMPRecipe(Recipe):
    version = '6.1.2'
    #url = 'http://www.mirrorservice.org/pub/gnu/gmp/gmp-{version}.tar.bz2'
    url = 'https://gmplib.org/download/gmp/gmp-{version}.tar.bz2'

    def should_build(self, arch):
        build_dir = self.get_build_dir(arch.arch)
        return not exists(join(build_dir, '.libs', 'libgmp.so'))

    def get_recipe_env(self, arch=None):
        env = super(LibGMPRecipe, self).get_recipe_env(arch)
        env['LIBGMP_LDFLAGS'] = '-avoid-version'

        ndk_dir = self.ctx.ndk_platform
        ndk_lib_dir = os.path.join(ndk_dir, 'usr', 'lib')
        if self.ctx.ndk == 'crystax':
            crystax_lib_dir = os.path.join(self.ctx.ndk_dir, 'sources/crystax/libs', arch.arch)
            env['CFLAGS'] = '{} -L{} -L{}'.format(env.get('CFLAGS'), crystax_lib_dir, ndk_lib_dir);

        env['LDFLAGS'] += ' -L{}'.format(ndk_lib_dir)
        env['LDFLAGS'] += " --sysroot={}".format(self.ctx.ndk_platform)
        env['PYTHONPATH'] = ':'.join([
            self.ctx.get_site_packages_dir(),
            env['BUILDLIB_PATH'],
        ])

        return env

    def build_arch(self, arch):
        with current_directory(self.get_build_dir(arch.arch)):
            env = self.get_recipe_env(arch)
            configure = sh.Command('./configure')
            shprint(configure,
                    '--host=arm-linux',
                    _env=env)
            shprint(sh.make, '-j4', _env=env)
            shprint(sh.mkdir, 'include')
            shprint(sh.cp, '-a', 'gmp.h', 'include/gmp.h')
            shprint(sh.cp, '-a', '.libs/libgmp.so', join(self.ctx.get_libs_dir(arch.arch), 'libgmp.so'))
            shprint(sh.cp, '-a', '.libs/libgmp.so', join(self.ctx.get_libs_dir(''), 'libgmp.so')) # also copy to libs_collections/<package_name>

recipe = LibGMPRecipe()