package C4::Circulation::Fines; #asummes C4/Circulation/Fines

#requires DBI.pm to be installed
#uses DBD:Pg

use strict;
require Exporter;
use DBI;
use C4::Database;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);

# set the version for version checking
$VERSION = 0.01;

@ISA = qw(Exporter);
@EXPORT = qw(&Getoverdues &CalcFine &BorType &UpdateFine);
%EXPORT_TAGS = ( );     # eg: TAG => [ qw!name1 name2! ],

# your exported package globals go here,
# as well as any optionally exported functions

@EXPORT_OK   = qw($Var1 %Hashit);


# non-exported package globals go here
use vars qw(@more $stuff);

# initalize package globals, first exported ones

my $Var1   = '';
my %Hashit = ();


# then the others (which are still accessible as $Some::Module::stuff)
my $stuff  = '';
my @more   = ();

# all file-scoped lexicals must be created before
# the functions below that use them.

# file-private lexicals go here
my $priv_var    = '';
my %secret_hash = ();

# here's a file-private function as a closure,
# callable as &$priv_func;  it cannot be prototyped.
my $priv_func = sub {
  # stuff goes here.
  };
  
# make all your functions, whether exported or not;


sub Getoverdues{
  my $dbh=C4Connect;
  my $query="Select * from issues where date_due < now() and returndate is
  NULL order by borrowernumber";
  my $sth=$dbh->prepare($query);
  $sth->execute;
  my $i=0;
  my @results;
  while (my $data=$sth->fetchrow_hashref){
    $results[$i]=$data;
    $i++;
  }
  $sth->finish;
  $dbh->disconnect;
#  print @results;
  return($i,\@results);  
}

sub CalcFine {
  my ($itemnumber,$bortype,$difference)=@_;
  my $dbh=C4Connect;
  my $query="Select * from items,biblioitems,itemtypes,categoryitem where items.itemnumber=$itemnumber
  and items.biblioitemnumber=biblioitems.biblioitemnumber and
  biblioitems.itemtype=itemtypes.itemtype and
  categoryitem.itemtype=itemtypes.itemtype and
  categoryitem.categorycode='$bortype' and (items.itemlost <> 1 or
items.itemlost is NULL)";
  my $sth=$dbh->prepare($query);
#  print $query;
  $sth->execute;
  my $data=$sth->fetchrow_hashref;
  $sth->finish;
  my $amount=0;
  my $printout;
  if ($difference == $data->{'firstremind'}){
    $amount=$data->{'fine'};
    $printout="First Notice";
  }
  my $second=$data->{'firstremind'}+$data->{'chargeperiod'};
  if ($difference == $second){
    $amount=$data->{'fine'}*2;
    $printout="Second Notice";
  }
  if ($difference == $data->{'accountsent'} && $data->{'fine'} > 0){
    $amount=5;
    $printout="Final Notice";
  }
  $dbh->disconnect;
  return($amount,$data->{'chargename'},$printout);
}

sub UpdateFine {
  my ($itemnum,$bornum,$amount,$type,$due)=@_;
  my $dbh=C4Connect;
  my $query="Select * from accountlines where itemnumber=$itemnum and
  borrowernumber=$bornum and (accounttype='FU' or accounttype='O' or
  accounttype='F' or accounttype='M') and description like '%$due%'";
  my $sth=$dbh->prepare($query);
#  print "$query\n";
  $sth->execute;

  if (my $data=$sth->fetchrow_hashref){
#    print "in accounts ...";
    if ($data->{'amount'} != $amount){
      
#      print "updating";
      my $diff=$amount - $data->{'amount'};
      my $out=$data->{'amountoutstanding'}+$diff;
      my $query2="update accountlines set date=now(), amount=$amount,
      amountoutstanding=$out,accounttype='FU' where
      borrowernumber=$data->{'borrowernumber'} and itemnumber=$data->{'itemnumber'}
      and (accounttype='FU' or accounttype='O');";
      my $sth2=$dbh->prepare($query2);
      $sth2->execute;
      $sth2->finish;      
    } else {
#      print "no update needed $data->{'amount'}"
    }
  } else {
    my $query2="select title from biblio,items where items.itemnumber=$itemnum
    and biblio.biblionumber=items.biblionumber";
    my $sth4=$dbh->prepare($query2);
    $sth4->execute;
    my $title=$sth4->fetchrow_hashref;
    $sth4->finish;
 #   print "not in account";
    my $query2="Select max(accountno) from accountlines";
    my $sth3=$dbh->prepare($query2);
    $sth3->execute;
    my @accountno=$sth3->fetchrow_array;
    $sth3->finish;
    $accountno[0]++;
    $title->{'title'}=~ s/\'/\\\'/g;
    $query2="Insert into accountlines
    (borrowernumber,itemnumber,date,amount,
    description,accounttype,amountoutstanding,accountno) values
    ($bornum,$itemnum,now(),$amount,'$type $title->{'title'} $due','FU',
    $amount,$accountno[0])";
    my $sth2=$dbh->prepare($query2);
    $sth2->execute;
    $sth2->finish;
  }
  $sth->finish;
  $dbh->disconnect;
}

sub BorType {
  my ($borrowernumber)=@_;
  my $dbh=C4Connect;
  my $query="Select * from borrowers,categories where 
  borrowernumber=$borrowernumber and
borrowers.categorycode=categories.categorycode";
  my $sth=$dbh->prepare($query);
  $sth->execute;
  my $data=$sth->fetchrow_hashref;
  $sth->finish;
  $dbh->disconnect;
  return($data);
}


END { }       # module clean-up code here (global destructor)