# Copyright 2013-2021 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 re

from spack import *


class Libfuse(MesonPackage):
    """The reference implementation of the Linux FUSE (Filesystem in
    Userspace) interface"""

    homepage = "https://github.com/libfuse/libfuse"
    url      = "https://github.com/libfuse/libfuse/releases/download/fuse-2.9.9/fuse-2.9.9.tar.gz"

    version('3.10.4', sha256='bfcb2520fd83db29e9fefd57d3abd5285f38ad484739aeee8e03fbec9b2d984a')
    version('3.10.3', sha256='c32527782cef620df58b162aa29901d1fb13253b029375d5860a2253a810344e')
    version('3.10.2', sha256='a16f93cc083264afd0d2958a0dc88f24c6c5d40a9f3842c645b1909e13edb75f')
    version('3.10.1', sha256='d8954e7b4c022c651aa80db3bb4a161437dd285cd5f1a23d0e25f055dcebe00d')
    version('3.10.0', sha256='52bbb52035f7eeaa54d139e21805d357f848f6e02ac956831d04988165a92c7b')
    version('3.9.4',  sha256='9e076ae757a09cac9ce1beb50b3361ae83a831e5abc0f1bf5cdf771cd1320338')
    version('3.9.3',  sha256='0f8f7ad9cc6667c6751efa425dd0a665dcc9d75f0b7fc0cb5b85141a514110e9')
    version('3.9.2',  sha256='b4409255cbda6f6975ca330f5b04cb335b823a95ddd8c812c3d224ec53478fc0')
    version('2.9.9',  sha256='d0e69d5d608cc22ff4843791ad097f554dd32540ddc9bed7638cc6fea7c1b4b5')

    def url_for_version(self, version):
        if version < Version("3.0.0"):
            return "https://github.com/libfuse/libfuse/releases/download/fuse-{0}/fuse-{1}.tar.gz".format(version, version)
        return "https://github.com/libfuse/libfuse/archive/refs/tags/fuse-{0}.tar.gz".format(version)

    variant('useroot', default=False, description="Use root privileges to make fusermount a setuid binary after installation")
    variant('system_install', default=False, description=(
        "Do not run the post-install script "
        "which typically sets up udev rules and "
        "and init script in /etc/init.d"))

    provides('fuse')
    conflicts("+useroot", when='~system_install', msg="useroot requires system_install")
    conflicts('platform=darwin', msg='libfuse does not support OS-X, use macfuse instead')

    # Drops the install script which does system configuration
    patch('0001-Do-not-run-install-script.patch', when='@3: ~system_install')
    patch('https://src.fedoraproject.org/rpms/fuse3/raw/0519b7bf17c4dd1b31ee704d49f8ed94aa5ba6ab/f/fuse3-gcc11.patch', sha256='3ad6719d2393b46615b5787e71778917a7a6aaa189ba3c3e0fc16d110a8414ec', when='@3: %gcc@11:')

    executables = ['^fusermount3?$']

    @classmethod
    def determine_version(cls, exe):
        output = Executable(exe)('--version', output=str, error=str)
        match = re.search(r'^fusermount.*version: (\S+)', output)
        return match.group(1) if match else None

    def meson_args(self):
        args = []

        if '+useroot' in self.spec:
            args.append('-Duseroot=true')
        else:
            args.append('-Duseroot=false')

        return args

    # Before libfuse 3.x this was an autotools package
    @when('@:2')
    def meson(self, spec, prefix):
        args = [
            "--prefix={0}".format(prefix),
            "MOUNT_FUSE_PATH={0}".format(self.prefix.sbin),
            "UDEV_RULES_PATH={0}".format(self.prefix.etc),
            "INIT_D_PATH={0}".format(self.prefix.etc),
        ]

        args.append('--enable-static' if 'libs=static' in self.spec
                    else '--disable-static')
        args.append('--enable-shared' if 'libs=shared' in self.spec
                    else '--disable-shared')

        configure(*args)

    @when('@:2')
    def build(self, spec, prefix):
        make()

    @when('@:2')
    def install(self, spec, prefix):
        make("install")