#!/usr/bin/perl -w

use strict;

my $command = shift @ARGV;
my $perl = shift @ARGV;
my $syncfile = shift @ARGV;

if ($command eq 'quickstart') {
  quickstart();

}
elsif ($command eq 'start') {
  quickstart();
  if ($syncfile)
  {
    # sleep until it disappears, or times out.
    # on second thoughts, just sleep a little bit if it exists,
    # don't wait for it to disappear entirely.  this just gives us
    # a little delay, to avoid overloading, without totally screwing
    # up if a lockfile gets left lying around...

    if (-f $syncfile && mtime_age_secs($syncfile) < 60*60) {
      print "$syncfile exists with age ".mtime_age_secs($syncfile).", sleeping\n";
      sleep 60*3 + rand(60*5);
    }

    open (TOUCH, ">$syncfile"); close TOUCH;
  }

  # ensure we're in a safe state to build
  system ("$perl Makefile.PL < /dev/null");
  system ("make distclean");
  system ("rm -rf Mail-SpamAssassin*");

}
elsif ($command eq 'stop') {
  if ($syncfile) {
    unlink ($syncfile);
    print "$syncfile removed\n";
  }
}
exit;

sub mtime_age_secs {
  my $f = shift;
  my @s = stat($f);
  return (time - $s[9]);
}

sub quickstart {
  # TODO
}