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#!/usr/local/bin/perl -Tw
#
# bill: Bill customer(s)
#
# Usage: bill [ -c [ i ] ] [ -d 'date' ] [ -b ]
#
# Bills all customers.
#
# Adds record to /dbin/cust_bill and /dbin/cust_pay (if payment made -
# CARD & COMP), prints invoice / charges card etc.
#
# -c: Turn on collecting (you probably want this).
#
# -i: real-time billing (as opposed to batch billing).  only relevant
#     for credit cards.
#
# -d: Pretent it's 'date'.  Date is in any format Date::Parse is happy with,
#     but be careful.
#
# ## n/a ## -b: send batch when done billing
#
# ivan@voicenet.com sep/oct 96
#
# separated billing and collections, cleaned up code.
# ivan@voicenet.com 96-nov-11
#
# added -d option
# ivan@voicenet.com 96-nov-13
#
# added -v option and started to implement it, added 'd:' to getopts call
#  (oops!)
# ivan@voicenet.com 97-jan-2
#
# added more debug messages, moved some searches to fssearch.pl library (for 
# speed)
# rewrote "all customer" finder to know about bill dates, for speed.
# ivan@voicenet.com 97-jan-8
#
# thought about it a while, and removed passing of the -d option to collect...?
# ivan@voicenet.com 97-jan-14
#
# make all -v stuff STDERR 
# ivan@voicenet.com 97-feb-4
#
# added pkgnum as argument to program from /db/part_pkg, with kludge for the
# "/bin/echo XX" 's already there.
# ivan@voicenet.com 97-feb-23
#
# - general cleanup
# - customers who are suspended can still be billed for the setup fee
# - cust_pkg record is re-read after the package setup fee program is run.
#   this way,
#   that program can modify the record (for example, to start accounts off
#   suspended)
#   (best to think four or five times before modifying anything else!)
# ivan@voicenet.com 97-feb-26
#
# don't bill recurring fee if its not time! (was removed)
# ivan@voicenet.com 97-mar-6
#
# added -b option, send batch when done billing.
# ivan@voicenet.com 97-apr-4
#
#insecure dependency on line 179ish below needs to be fixed before bill is
#used setuid
# ivan@voicenet.com 97-jun-2
#
# removed running of setup program (depriciated)
# ivan@voicenet.com 97-jul-21
#
# rewrote for new API, removed option to specify custnums (use FS::Bill 
# instead), removed -v option (?)
# ivan@voicenet.com 97-jul-22 - 23 - 25 -28
# (need to add back in email stuff, look in /home/ivan/old/dbin/collect)
#
# s/suidsetup/adminsuidsetup/, s/FS::Search/FS::Record/, added some batch
# exporting stuff (which still needs to be generalized) and removed &idiot
# ivan@sisd.com 98-may-27

# setup

use strict;
use Fcntl qw(:flock);
use Date::Parse;
use Getopt::Std;
use FS::UID qw(adminsuidsetup swapuid);
use FS::Record qw(qsearch qsearchs);
use FS::Bill;

my($batchfile)="/var/spool/freeside/batch";
my($batchlock)="/var/spool/freeside/batch.lock";

adminsuidsetup;

&untaint_argv;	#what it sounds like  (eww)
use vars qw($opt_b $opt_c $opt_i $opt_d);
getopts("bcid:");	#switches

#we're at now now (and later).
my($time)= $main::opt_d ? str2time($main::opt_d) : $^T;

# find packages w/ bill < time && cancel != '', and create corresponding
# customer objects

my($cust_main,%saw);
foreach $cust_main (
  map {
    if ( ( $_->getfield('bill') || 0 ) <= $time &&
         !$saw{ $_->getfield('custnum') }++ ) {
      qsearchs('cust_main',{'custnum'=> $_->getfield('custnum') } );
    } else {
      ();
    }
  } qsearch('cust_pkg',{'cancel'=>''})
) {

  # and bill them

  print "Billing customer #" . $cust_main->getfield('custnum') . "\n";

  bless($cust_main,"FS::Bill");

  my($error);

  $error=$cust_main->bill('time'=>$time);
  warn "Error billing,  customer #" . $cust_main->getfield('custnum') . 
    ":" . $error if $error;

  if ($main::opt_c) {
    $error=$cust_main->collect('invoice_time'=>$time,
                               'batch_card' => $main::opt_i ? 'no' : 'yes',
                              );
    warn "Error collecting customer #" . $cust_main->getfield('custnum') .
      ":" . $error if $error;

  #sleep 1;

  }

}

#if ($main::opt_b) {
#
#  die "Batch still waiting for reply? ($batchlock exists)\n" if -e $batchlock;
#  open(BATCHLOCK,"+>>$batchlock") or die "Can't open $batchlock: $!";
#  select(BATCHLOCK); $|=1; select(STDOUT);
#  unless ( flock(BATCHLOCK,,LOCK_EX|LOCK_NB) ) {
#    seek(BATCHLOCK,0,0);
#    my($pid)=<BATCHLOCK>;
#    chop($pid);
#    die "Is a batch running? (pid $pid)\n";
#  }
#  seek(BATCHLOCK,0,0);
#  print BATCHLOCK $$,"\n";
#
#  ( open(BATCH,">$batchfile")
#    and flock(BATCH,LOCK_EX|LOCK_NB)
#  ) or die "Can't open $batchfile: $!";
#
#  my($cust_pay_batch);
#  foreach $cust_pay_batch (qsearch('cust_pay_batch',{})) {
#    print BATCH join(':',
#      $_->getfield('cardnum'),
#      $_->getfield('exp'),
#      $_->getfield('amount'),
#      $_->getfield('payname')
#        || $_->getfield('first'). ' '. $_->getfield('last'),
#      "Description",
#      $_->getfield('zip'),
#    ),"\n";
#  }
#
#  flock(BATCH,LOCK_UN);
#  close BATCH;
#
#  flock(BATCHLOCK,LOCK_UN);
#  close BATCHLOCK;
#}

# subroutines

sub untaint_argv {
  foreach $_ ( $[ .. $#ARGV ) { #untaint @ARGV
    $ARGV[$_] =~ /^([\w\-\/]*)$/ || die "Illegal arguement \"$ARGV[$_]\"";
    $ARGV[$_]=$1;
  }
}