#!/usr/ug/bin/perl5
#
# sample use:
# gsub -akf ~whuang/prog/gale/shout cmd/shout:@ugcs.caltech.edu/user/shout.whuang
#
# by Wei-Hwa Huang (whuang@ugcs.caltech.edu)
# sections of code stolen from jtr@ugcs.caltech.edu

use strict;
use POSIX qw(strftime);

# gale info
use vars qw($FROM $ENC $CAT $SIGN $TIME @MESSAGE $NEWCAT $FTIME);
# misc
use vars qw($GALE $HOME $LOGDIR $USER %LOGGEDTO);

$FROM= $ENV{'HEADER_FROM'};
$TIME= $ENV{'HEADER_TIME'};
$CAT= $ENV{'GALE_CATEGORY'};
$CAT =~ s-zephyr/message-zephyr/MESSAGE-gi;
print STDERR "incoming message from category: $CAT\n";
$ENC= $ENV{'GALE_ENCRYPTED'};
$SIGN= $ENV{'GALE_SIGNED'};
$HOME= $ENV{'HOME'};
$GALE= $HOME . "/.gale/";
$LOGDIR= $HOME . "/gale/";
$USER= $ENV{'USER'};
$FTIME= $ENV{'GALE_TIME_ID_TIME'};
@MESSAGE = <>;

print STDERR "$CAT\n";
my @cats = split(":",$CAT);
my (@cmdcats, @botcats, @othercats) = ((),(),());
my $singlecat;
foreach $singlecat (@cats) {
  if ($singlecat =~ /^bot\./) { 
    push(@botcats,$singlecat);
  } elsif ($singlecat eq '@ugcs.caltech.edu/user/shout.whuang/') {
    push(@cmdcats,$singlecat);
  } elsif ($singlecat =~ /^cmd\./) {
    push(@cmdcats,$singlecat);
  } else {
    push(@othercats,$singlecat);
  }
}

foreach $singlecat (@cmdcats) {
  my $outstring;
  if ($singlecat eq '@ugcs.caltech.edu/user/shout.whuang/') {
    $outstring = (@othercats == ()) ?
      "| gsend $SIGN" :
      "| gsend $SIGN -c ".join(':',@othercats);
  } else {
    $outstring = (@othercats == ()) ?
      "| gsend -c bot/shout" :
      "| gsend -c bot/shout:".join(':',@othercats);
  }

  if (join('',@MESSAGE) =~ /^\s*help\s*$/) {
    @MESSAGE = ();
    $MESSAGE[0] = <<'End of Help Message';
shout version 2.0 by Wei-Hwa Huang (whuang@ugcs.caltech.edu)

Puts whatever you send to it in all caps.

Privately:
  Send a private puff to shout.whuang@ugcs.caltech.edu
Publically:
  Send a puff to cmd/shout.  The bot will respond in bot/shout,
  along with any crosspuffed categories.

Known bugs:
  If you want me to shout just the string "help", you're screwed.

End of Help Message
  } else {
    foreach (@MESSAGE) {  
      tr/a-z/A-Z/;
    }
  }

  $ENV{'GALE_FROM'}= 'That Loud Guy';
  open(FHAND, $outstring);
  print FHAND @MESSAGE;
  close(FHAND);
}