alienfile

use alienfile;

use File::Which;
use version 0.77;

for my $gnuplot (
    ( $ENV{'GNUPLOT_BINARY'} ? $ENV{'GNUPLOT_BINARY'} : () ),
    'gnuplot'
  ) {
  plugin 'Probe::CommandLine' => (
    command => $gnuplot,
    args    => [ '--version' ],
    match   => qr/^gnuplot ([0-9\.]+ patchlevel [0-9]+)/,
    version => qr/^gnuplot ([0-9\.]+ patchlevel [0-9]+)/,
  );
}

meta->around_hook( probe => sub {
  my $orig  = shift;
  my $build = shift;

  eval {
    unshift @INC, '../../lib', 'lib';
    require Alien::Gnuplot;
  };

  my $install_type = $orig->($build, @_);

  $build->log("Checking @{[ $build->runtime_prop->{command} ]}");
  eval {
    Alien::Gnuplot->check_gnuplot(
      map { -f $_ ? $_ : which($_) } $build->runtime_prop->{command}
    );
    1;
  } or do {
    $build->log($@);
    return 'share';
  };

  # Fix up the version from output to include the patchlevel as a dotted
  # version component.
  if( exists $build->runtime_prop->{version} ) {
    $build->runtime_prop->{version} =~ s/^([0-9\.]+) patchlevel ([0-9]+)$/$1.$2/;
  }

  # Check against minimum version.
  my $got_version = version->parse($build->runtime_prop->{version});
  if( version->parse($Alien::Gnuplot::GNUPLOT_RECOMMENDED_VERSION) > $got_version ) {
    $build->log(<<EOF);
Gnuplot seems to exist on your system, but it is version @{[ $build->runtime_prop->{version} ]}.
The minimum recommended version is $Alien::Gnuplot::GNUPLOT_RECOMMENDED_VERSION.
EOF
    return 'share';
  } else {
    $build->log(<<EOF);
Gnuplot version $got_version meets minimum version
requirement of Gnuplot version $Alien::Gnuplot::GNUPLOT_RECOMMENDED_VERSION.
EOF
  }

  {
    # Check for Windows piped input bug.

    # Range (exclusive) where bug is present.
    my @exclusive_range = map version->parse($_), ( '5.2.8', '5.4.6' );

    if( $^O eq 'MSWin32'
      && $exclusive_range[0] < $got_version
      && $got_version        < $exclusive_range[1] ) {
      $build->log(<<EOF);
Gnuplot version $got_version on Windows has a known problem.

Gnuplot between versions (@{[ join ", ", @exclusive_range ]}) exclusive fails
to work properly when given piped input. See <https://github.com/PDLPorters/PDL-Graphics-Gnuplot/issues/79>
for more information.
EOF
      return 'share';
    }
  }

  return $install_type;
});


# Separate hook after the above to give hints about installation to the system.
meta->around_hook( probe => sub {
  my $orig  = shift;
  my $build = shift;

  my $install_type = $orig->($build, @_);

  # Map[ $^O, Tuple[ Name, Command, InstallCommand, Maybe[URL] ] ]
  #
  # NOTE: If the URL is defined, this is a self-installed package manager
  # (i.e., for systems that do not come with a standard package manager), so
  # print out its information regardless of whether it is installed.
  my %os_installers = (
    darwin => [
      ['MacPorts','port', 'port install gnuplot', 'https://www.macports.org/'],
      ['Fink'    ,'fink', 'fink install gnuplot', 'https://www.finkproject.org/'],
      ['Homebrew','brew', 'brew install gnuplot', 'https://brew.sh/'],
    ],
    linux => [
      [ 'YUM', 'yum'    , 'yum install gnuplot'    , undef ],
      [ 'APT', 'apt-get', 'apt-get install gnuplot', undef ],
    ],
    MSWin32 => [
      ['Chocolatey', 'choco', 'choco install gnuplot', 'https://chocolatey.org/' ],
    ],
  );

  if( $install_type eq 'share' and exists $os_installers{$^O} ) {
    $build->log(<<EOF);

Gnuplot seems to not exist on your system. You can use the following package
manager(s) to install Gnuplot to your system.

EOF
    for my $manager (@{ $os_installers{$^O} }) {
      next if ! defined $manager->[3] && ! which( $manager->[1] );
      $build->log(<<EOF);
  - $manager->[0]@{[ defined $manager->[3] ? " (available at <$manager->[3]>)" : ""  ]}:
      \$ $manager->[2]

EOF
    }
  }

  return $install_type;
});


sub do_binary_release_mswin32 {
  requires 'Alien::7zip' => '0.03';
  requires 'Alien::Build::CommandSequence';

  start_url 'https://sourceforge.net/projects/gnuplot/files/gnuplot/5.4.6/gp546-win64-mingw-2.7z/download';
  plugin 'Download';
  extract [ '%{sevenzip} x %{.install.download}' ];
  plugin 'Build::Copy';
  gather sub {
    my ($build) = @_;
    $build->runtime_prop->{'style'} = 'binary';
  };
}

sub do_source_release {
  start_url 'https://sourceforge.net/projects/gnuplot/files/gnuplot/5.4.6/gnuplot-5.4.6.tar.gz/download';
  plugin 'Download';
  plugin 'Extract' => 'tar.gz';
  plugin 'Build::Autoconf';
  build [
    '%{configure}',
    '%{make}',
    '%{make} install',
  ];
  gather sub {
    my ($build) = @_;
    $build->runtime_prop->{'style'} = 'source';
  };
}

share {
  if( $^O eq 'MSWin32' ) {
    do_binary_release_mswin32;
  } else {
    do_source_release;
  }
}