package C4::Stats;

# $Id$

# Copyright 2000-2002 Katipo Communications
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA  02111-1307 USA

use strict;
require Exporter;
use DBI;
use C4::Context;
use vars qw($VERSION @ISA @EXPORT);

# set the version for version checking
$VERSION = $VERSION = do { my @v = '$Revision$' =~ /\d+/g;
    shift(@v) . "." . join( "_", map { sprintf "%03d", $_ } @v );
};

=head1 NAME

C4::Stats - Update Koha statistics (log)

=head1 SYNOPSIS

  use C4::Stats;

=head1 DESCRIPTION

The C<&UpdateStats> function adds an entry to the statistics table in
the Koha database, which acts as an activity log.

=head1 FUNCTIONS

=over 2

=cut

@ISA    = qw(Exporter);
@EXPORT = qw(&UpdateStats &statsreport &TotalOwing
  &TotalPaid &getcharges &Getpaidbranch &unfilledreserves &getcredits
  getrefunds);

=item UpdateStats

  &UpdateStats($env, $branch, $type, $value, $other, $itemnumber,
               $itemtype, $borrowernumber);

Adds a line to the statistics table of the Koha database. In effect,
it logs an event.

C<$branch>, C<$type>, C<$value>, C<$other>, C<$itemnumber>,
C<$itemtype>, and C<$borrowernumber> correspond to the fields of the
statistics table in the Koha database.

If C<$branch> is the empty string, the branch code will be taken from
C<$env-E<gt>{branchcode}>.

C<$env-E<gt>{usercode}> specifies the value of the C<usercode> field.

=cut

#'
sub UpdateStats {

    #module to insert stats data into stats table
    my (
        $env,      $branch,         $type,
        $amount,   $other,          $itemnum,
        $itemtype, $borrowernumber, $accountno
      )
      = @_;
    my $dbh = C4::Context->dbh;
    if ( $branch eq '' ) {
        $branch = $env->{'branchcode'};
    }
    my $user         = $env->{'usercode'};
    my $organisation = $env->{'organisation'};
    print $borrowernumber;

    # FIXME - Use $dbh->do() instead
    my $sth = $dbh->prepare(
        "Insert into statistics (datetime,branch,type,usercode,value,
                                        other,itemnumber,itemtype,borrowernumber,proccode,associatedborrower) values (now(),?,?,?,?,?,?,?,?,?,?)"
    );
    $sth->execute(
        $branch,    $type,    $user,     $amount,
        $other,     $itemnum, $itemtype, $borrowernumber,
        $accountno, $organisation
    );
    $sth->finish;
}

# Otherwise, it'd need a POD.
sub TotalPaid {
    my ( $time, $time2, $spreadsheet ) = @_;
    $time2 = $time unless $time2;
    my $dbh   = C4::Context->dbh;
    my $query = "SELECT * FROM statistics,borrowers
  WHERE statistics.borrowernumber= borrowers.borrowernumber
  AND (statistics.type='payment' OR statistics.type='writeoff') ";
    if ( $time eq 'today' ) {
        $query = $query . " AND datetime = now()";
    }
    else {
        $query .= " AND datetime > '$time'";
    }
    if ( $time2 ne '' ) {
        $query .= " AND datetime < '$time2'";
    }
    if ($spreadsheet) {
        $query .= " ORDER BY branch, type";
    }
    my $sth = $dbh->prepare($query);
    $sth->execute();
    my @results;
    while ( my $data = $sth->fetchrow_hashref ) {
        push @results, $data;
    }
    $sth->finish;
    return (@results);
}

# Otherwise, it needs a POD.
sub getcharges {
    my ( $borrowerno, $timestamp, $accountno ) = @_;
    my $dbh        = C4::Context->dbh;
    my $timestamp2 = $timestamp - 1;
    my $query      = "";
    my $sth;

    # getcharges is now taking accountno. as an argument
    if ($accountno) {
        $sth = $dbh->prepare(
            "Select * from accountlines where borrowernumber=?
              and accountno = ?"
        );
        $sth->execute( $borrowerno, $accountno );

        # this bit left in for old 2 arg usage of getcharges
    }
    else {
        $sth = $dbh->prepare(
            "Select * from accountlines where borrowernumber=?
              and timestamp = ? and accounttype <> 'Pay' and
              accounttype <> 'W'"
        );
        $sth->execute( $borrowerno, $timestamp );
    }

    #  print $query,"<br>";
    my $i = 0;
    my @results;
    while ( my $data = $sth->fetchrow_hashref ) {

        #    if ($data->{'timestamp'} == $timestamp){
        $results[$i] = $data;
        $i++;

        #    }
    }
    return (@results);
}

# Otherwise, it needs a POD.
sub getcredits {
    my ( $date, $date2 ) = @_;
    my $dbh = C4::Context->dbh;

    #takes date converts to timestamps
    my $padding = "000000";
    ( my $a, my $b, my $c ) = unpack( "A4 x1 A2 x1 A2", $date );
    ( my $x, my $y, my $z ) = unpack( "A4 x1 A2 x1 A2", $date2 );
    my $timestamp  = $a . $b . $c . $padding;
    my $timestamp2 = $x . $y . $z . $padding;

    my $sth = $dbh->prepare(
"Select * from accountlines,borrowers where (((accounttype = 'LR')  or (accounttype <> 'Pay'))
                                   and amount < 0  and accountlines.borrowernumber = borrowers.borrowernumber
                                   and timestamp >=?  and timestamp <?)"
    );
    $sth->execute( $timestamp, $timestamp2 );

    my $i = 0;
    my @results;
    while ( my $data = $sth->fetchrow_hashref ) {
        $results[$i] = $data;
        $i++;
    }
    return (@results);
}

sub getrefunds {
    my ( $date, $date2 ) = @_;
    my $dbh = C4::Context->dbh;

    #takes date converts to timestamps
    my $padding = "000000";
    ( my $a, my $b, my $c ) = unpack( "A4 x1 A2 x1 A2", $date );
    ( my $x, my $y, my $z ) = unpack( "A4 x1 A2 x1 A2", $date2 );
    my $timestamp  = $a . $b . $c . $padding;
    my $timestamp2 = $x . $y . $z . $padding;

    my $sth = $dbh->prepare(
"Select * from accountlines,borrowers where (accounttype = 'REF'                                                                
		                          and accountlines.borrowernumber = borrowers.borrowernumber                                                                          
		                                   and timestamp >=?  and timestamp <?)"
    );
    $sth->execute( $timestamp, $timestamp2 );

    my @results;
    while ( my $data = $sth->fetchrow_hashref ) {
        push @results, $data;
    }
    return (@results);
}

# Otherwise, this needs a POD.
sub Getpaidbranch {
    my ( $date, $borrno ) = @_;
    my $dbh = C4::Context->dbh;
    my $sth =
      $dbh->prepare(
"select * from statistics where type='payment' and datetime >? and  borrowernumber=?"
      );
    $sth->execute( $date, $borrno );

    #  print $query;
    my $data = $sth->fetchrow_hashref;
    $sth->finish;
    return ( $data->{'branch'} );
}

# FIXME - This is only used in reservereport.pl and reservereport.xls,
# neither of which is used.
# Otherwise, it needs a POD.
sub unfilledreserves {
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare(
"select *,biblio.title from reserves,reserveconstraints,biblio,borrowers,biblioitems where (found <> 'F' or
	    found is NULL) and cancellationdate
                                                                is NULL and biblio.biblionumber=reserves.biblionumber and
                                                                reserves.constrainttype='o'
                                                                and (reserves.biblionumber=reserveconstraints.biblionumber
                                                                and reserves.borrowernumber=reserveconstraints.borrowernumber)
                                                                and
                                                                reserves.borrowernumber=borrowers.borrowernumber and
                                                                biblioitems.biblioitemnumber=reserveconstraints.biblioitemnumber order by
                                                                biblio.title,reserves.reservedate"
    );
    $sth->execute;
    my $i = 0;
    my @results;
    while ( my $data = $sth->fetchrow_hashref ) {
        $results[$i] = $data;
        $i++;
    }
    $sth->finish;
    $sth = $dbh->prepare(
"select *,biblio.title from reserves,biblio,borrowers where (found <> 'F' or found is NULL) and cancellationdate
                is NULL and biblio.biblionumber=reserves.biblionumber and reserves.constrainttype='a' and
                reserves.borrowernumber=borrowers.borrowernumber
                order by
                biblio.title,reserves.reservedate"
    );
    $sth->execute;
    while ( my $data = $sth->fetchrow_hashref ) {
        $results[$i] = $data;
        $i++;
    }
    $sth->finish;
    return ( $i, \@results );
}

1;
__END__

=back

=head1 AUTHOR

Koha Developement team <info@koha.org>

=cut