#!/usr/bin/env nix-shell
#!nix-shell -i perl -p perl less nix --pure -I nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-18.09.tar.gz

=head1 NAME

website - Website repository CLI manager.

=head1 SYNOPSIS

website <subcommand> [options]

  Subcommands:
    pastebin          Create a new pastebin from the org-mode template.
    slides            Create a new HTML slideshow from the existing templates.
    test              Run internal CLI tests.

  Options:
    --help            Show the manpage.

=head1 OPTIONS

=over 4

=item B<-h, --help>

Prints the manual page and exits.

=back

=head1 DESCRIPTION

B<website> is the top-level coordinator of subtasks inside the website repo.

=cut

use strict;
use warnings;
use Getopt::Long qw(:config no_ignore_case bundling pass_through);
use Pod::Usage qw(pod2usage);
use File::Basename qw(dirname);

my $help = 0;
my $title = '';
sub getopts {
  GetOptions(
    'help|h|?' => \$help
  );
}

sub test {
  die "FIXME";
}

sub escaped_cmd {
  my ($cmd, @args) = @_;
  my $dirname = dirname(__FILE__);
  $cmd = "$dirname/$cmd";
  $cmd = $cmd." \"$_\"", for @args;
  system($cmd);
  exit $? >> 8;
}

sub dispatch {
  my $action = shift;
  my @args = @_;
  if (!defined $action && $help) {
    pod2usage(
      -verbose => 2,
      -exitval => 0
    );
  } elsif (!defined $action) {
    print "Missing subcomand.\n";
    pod2usage(
      -verbose => 1,
      -exitval => 2
    );
  } elsif ($action eq 'pastebin') {
    my @sub_args = grep { $_ ne $action } @args;
    escaped_cmd("pastebin/website-pastebin", @sub_args);
  } elsif ($action eq 'slides') {
    my @sub_args = grep { $_ ne $action } @args;
    escaped_cmd("slides/website-slides", @sub_args);
  } elsif ($action eq 'test') {
    test();
  } else {
    print "Unknown subcommand: $action.\n";
    pod2usage(
      -verbose => 1,
      -exitval => 2
    );
  }
}

sub main {
  my @orig_args=@ARGV;
  getopts();
  my $action=shift @ARGV;
  dispatch($action, @orig_args);
}

main();