# 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)

from spack import *


class Watch(AutotoolsPackage):
    """Executes a program periodically, showing output fullscreen."""

    # Note: there is a separate procps package, but it doesn't build on macOS.
    # This package only contains the `watch` program, a subset of procps which
    # does build on macOS.
    # https://github.com/NixOS/nixpkgs/issues/18929#issuecomment-249388571
    homepage = "https://gitlab.com/procps-ng/procps"
    git      = "https://gitlab.com/procps-ng/procps.git"

    version('master', branch='master')
    version('3.3.15', tag='v3.3.15')

    depends_on('autoconf', type='build')
    depends_on('automake', type='build')
    depends_on('libtool',  type='build')
    depends_on('m4',       type='build')
    depends_on('pkgconfig@0.9.0:', type='build')
    depends_on('gettext', type='build')
    depends_on('ncurses')

    # https://github.com/Homebrew/homebrew-core/blob/master/Formula/watch.rb
    def autoreconf(self, spec, prefix):
        sh = which('sh')
        sh('autogen.sh')

    def configure_args(self):
        return [
            '--with-ncurses',
            # Required to avoid libintl linking errors
            '--disable-nls',
        ]

    def build(self, spec, prefix):
        make('watch')

    def install(self, spec, prefix):
        mkdirp(prefix.bin)
        mkdirp(prefix.man.man1)

        install('watch', prefix.bin)
        install('watch.1', prefix.man.man1)
