package C4::Serials;    #assumes C4/Serials.pm

# 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;
use C4::Dates qw(format_date);
use Date::Calc qw(:all);
use POSIX qw(strftime);
use C4::Suggestions;
use C4::Koha;
use C4::Biblio;
use C4::Branch;
use C4::Items;
use C4::Search;
use C4::Letters;
use C4::Log;    # logaction
use C4::Debug;

use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);

BEGIN {
    $VERSION = 3.01;    # set version for version checking
    require Exporter;
    @ISA    = qw(Exporter);
    @EXPORT = qw(
      &NewSubscription    &ModSubscription    &DelSubscription    &GetSubscriptions
      &GetSubscription    &CountSubscriptionFromBiblionumber      &GetSubscriptionsFromBiblionumber
      &GetFullSubscriptionsFromBiblionumber   &GetFullSubscription &ModSubscriptionHistory
      &HasSubscriptionStrictlyExpired &HasSubscriptionExpired &GetExpirationDate &abouttoexpire

      &GetNextSeq         &NewIssue           &ItemizeSerials    &GetSerials
      &GetLatestSerials   &ModSerialStatus    &GetNextDate       &GetSerials2
      &ReNewSubscription  &GetLateIssues      &GetLateOrMissingIssues
      &GetSerialInformation                   &AddItem2Serial
      &PrepareSerialsData &GetNextExpected    &ModNextExpected

      &UpdateClaimdateIssues
      &GetSuppliersWithLateIssues             &getsupplierbyserialid
      &GetDistributedTo   &SetDistributedTo
      &getroutinglist     &delroutingmember   &addroutingmember
      &reorder_members
      &check_routing &updateClaim &removeMissingIssue
      &CountIssues

    );
}

=head2 GetSuppliersWithLateIssues

=head1 NAME

C4::Serials - Give functions for serializing.

=head1 SYNOPSIS

  use C4::Serials;

=head1 DESCRIPTION

Give all XYZ functions

=head1 FUNCTIONS

=over 4

%supplierlist = &GetSuppliersWithLateIssues

this function get all suppliers with late issues.

return :
the supplierlist into a hash. this hash containts id & name of the supplier
Only valid suppliers are returned. Late subscriptions lacking a supplier are
ignored.

=back

=cut

sub GetSuppliersWithLateIssues {
    my $dbh   = C4::Context->dbh;
    my $query = qq|
        SELECT DISTINCT id, name
        FROM            subscription 
        LEFT JOIN       serial ON serial.subscriptionid=subscription.subscriptionid
        LEFT JOIN       aqbooksellers ON subscription.aqbooksellerid = aqbooksellers.id
        WHERE           subscription.subscriptionid = serial.subscriptionid
        AND             (planneddate < now() OR serial.STATUS = 3 OR serial.STATUS = 4)
        ORDER BY name
    |;
    my $sth = $dbh->prepare($query);
    $sth->execute;
    my %supplierlist;
    while ( my ( $id, $name ) = $sth->fetchrow ) {
        next if !defined $id;
        $supplierlist{$id} = $name;
    }
    return %supplierlist;
}

=head2 GetLateIssues

=over 4

@issuelist = &GetLateIssues($supplierid)

this function select late issues on database

return :
the issuelist into an table. Each line of this table containts a ref to a hash which it containts
name,title,planneddate,serialseq,serial.subscriptionid from tables : subscription, serial & biblio

=back

=cut

sub GetLateIssues {
    my ($supplierid) = @_;
    my $dbh = C4::Context->dbh;
    my $sth;
    if ($supplierid) {
        my $query = qq|
            SELECT     name,title,planneddate,serialseq,serial.subscriptionid
            FROM       subscription
            LEFT JOIN  serial ON subscription.subscriptionid = serial.subscriptionid
            LEFT JOIN  biblio ON biblio.biblionumber = subscription.biblionumber
            LEFT JOIN  aqbooksellers ON subscription.aqbooksellerid = aqbooksellers.id
            WHERE      ((planneddate < now() AND serial.STATUS =1) OR serial.STATUS = 3)
            AND        subscription.aqbooksellerid=$supplierid
            ORDER BY   title
        |;
        $sth = $dbh->prepare($query);
    } else {
        my $query = qq|
            SELECT     name,title,planneddate,serialseq,serial.subscriptionid
            FROM       subscription
            LEFT JOIN  serial ON subscription.subscriptionid = serial.subscriptionid
            LEFT JOIN  biblio ON biblio.biblionumber = subscription.biblionumber
            LEFT JOIN  aqbooksellers ON subscription.aqbooksellerid = aqbooksellers.id
            WHERE      ((planneddate < now() AND serial.STATUS =1) OR serial.STATUS = 3)
            ORDER BY   title
        |;
        $sth = $dbh->prepare($query);
    }
    $sth->execute;
    my @issuelist;
    my $last_title;
    my $odd   = 0;
    my $count = 0;
    while ( my $line = $sth->fetchrow_hashref ) {
        $odd++ unless $line->{title} eq $last_title;
        $line->{title} = "" if $line->{title} eq $last_title;
        $last_title = $line->{title} if ( $line->{title} );
        $line->{planneddate} = format_date( $line->{planneddate} );
        $count++;
        push @issuelist, $line;
    }
    return $count, @issuelist;
}

=head2 GetSubscriptionHistoryFromSubscriptionId

=over 4

$sth = GetSubscriptionHistoryFromSubscriptionId()
this function just prepare the SQL request.
After this function, don't forget to execute it by using $sth->execute($subscriptionid)
return :
$sth = $dbh->prepare($query).

=back

=cut

sub GetSubscriptionHistoryFromSubscriptionId() {
    my $dbh   = C4::Context->dbh;
    my $query = qq|
        SELECT *
        FROM   subscriptionhistory
        WHERE  subscriptionid = ?
    |;
    return $dbh->prepare($query);
}

=head2 GetSerialStatusFromSerialId

=over 4

$sth = GetSerialStatusFromSerialId();
this function just prepare the SQL request.
After this function, don't forget to execute it by using $sth->execute($serialid)
return :
$sth = $dbh->prepare($query).

=back

=cut

sub GetSerialStatusFromSerialId() {
    my $dbh   = C4::Context->dbh;
    my $query = qq|
        SELECT status
        FROM   serial
        WHERE  serialid = ?
    |;
    return $dbh->prepare($query);
}

=head2 GetSerialInformation

=over 4

$data = GetSerialInformation($serialid);
returns a hash containing :
  items : items marcrecord (can be an array)
  serial table field
  subscription table field
  + information about subscription expiration
  
=back

=cut

sub GetSerialInformation {
    my ($serialid) = @_;
    my $dbh        = C4::Context->dbh;
    my $query      = qq|
        SELECT serial.*, serial.notes as sernotes, serial.status as serstatus,subscription.*,subscription.subscriptionid as subsid |;
    if (   C4::Context->preference('IndependantBranches')
        && C4::Context->userenv
        && C4::Context->userenv->{'flags'} != 1
        && C4::Context->userenv->{'branch'} ) {
        $query .= "
      , ((subscription.branchcode <>\"" . C4::Context->userenv->{'branch'} . "\") and subscription.branchcode <>\"\" and subscription.branchcode IS NOT NULL) as cannotedit ";
    }
    $query .= qq|             
        FROM   serial LEFT JOIN subscription ON subscription.subscriptionid=serial.subscriptionid
        WHERE  serialid = ?
    |;
    my $rq = $dbh->prepare($query);
    $rq->execute($serialid);
    my $data = $rq->fetchrow_hashref;

    # create item information if we have serialsadditems for this subscription
    if ( $data->{'serialsadditems'} ) {
        my $queryitem = $dbh->prepare("SELECT itemnumber from serialitems where serialid=?");
        $queryitem->execute($serialid);
        my $itemnumbers = $queryitem->fetchall_arrayref( [0] );
        if ( scalar(@$itemnumbers) > 0 ) {
            foreach my $itemnum (@$itemnumbers) {

                #It is ASSUMED that GetMarcItem ALWAYS WORK...
                #Maybe GetMarcItem should return values on failure
                $debug and warn "itemnumber :$itemnum->[0], bibnum :" . $data->{'biblionumber'};
                my $itemprocessed = PrepareItemrecordDisplay( $data->{'biblionumber'}, $itemnum->[0], $data );
                $itemprocessed->{'itemnumber'}   = $itemnum->[0];
                $itemprocessed->{'itemid'}       = $itemnum->[0];
                $itemprocessed->{'serialid'}     = $serialid;
                $itemprocessed->{'biblionumber'} = $data->{'biblionumber'};
                push @{ $data->{'items'} }, $itemprocessed;
            }
        } else {
            my $itemprocessed = PrepareItemrecordDisplay( $data->{'biblionumber'}, '', $data );
            $itemprocessed->{'itemid'}       = "N$serialid";
            $itemprocessed->{'serialid'}     = $serialid;
            $itemprocessed->{'biblionumber'} = $data->{'biblionumber'};
            $itemprocessed->{'countitems'}   = 0;
            push @{ $data->{'items'} }, $itemprocessed;
        }
    }
    $data->{ "status" . $data->{'serstatus'} } = 1;
    $data->{'subscriptionexpired'} = HasSubscriptionExpired( $data->{'subscriptionid'} ) && $data->{'status'} == 1;
    $data->{'abouttoexpire'} = abouttoexpire( $data->{'subscriptionid'} );
    return $data;
}

=head2 AddItem2Serial

=over 4

$data = AddItem2Serial($serialid,$itemnumber);
Adds an itemnumber to Serial record

=back

=cut

sub AddItem2Serial {
    my ( $serialid, $itemnumber ) = @_;
    my $dbh = C4::Context->dbh;
    my $rq  = $dbh->prepare("INSERT INTO `serialitems` SET serialid=? , itemnumber=?");
    $rq->execute( $serialid, $itemnumber );
    return $rq->rows;
}

=head2 UpdateClaimdateIssues

=over 4

UpdateClaimdateIssues($serialids,[$date]);

Update Claimdate for issues in @$serialids list with date $date 
(Take Today if none)

=back

=cut

sub UpdateClaimdateIssues {
    my ( $serialids, $date ) = @_;
    my $dbh = C4::Context->dbh;
    $date = strftime( "%Y-%m-%d", localtime ) unless ($date);
    my $query = "
        UPDATE serial SET claimdate=$date,status=7
        WHERE  serialid in (" . join( ",", @$serialids ) . ")";
    my $rq = $dbh->prepare($query);
    $rq->execute;
    return $rq->rows;
}

=head2 GetSubscription

=over 4

$subs = GetSubscription($subscriptionid)
this function get the subscription which has $subscriptionid as id.
return :
a hashref. This hash containts
subscription, subscriptionhistory, aqbudget.bookfundid, biblio.title

=back

=cut

sub GetSubscription {
    my ($subscriptionid) = @_;
    my $dbh              = C4::Context->dbh;
    my $query            = qq(
        SELECT  subscription.*,
                subscriptionhistory.*,
                aqbooksellers.name AS aqbooksellername,
                biblio.title AS bibliotitle,
                subscription.biblionumber as bibnum);
    if (   C4::Context->preference('IndependantBranches')
        && C4::Context->userenv
        && C4::Context->userenv->{'flags'} != 1
        && C4::Context->userenv->{'branch'} ) {
        $query .= "
      , ((subscription.branchcode <>\"" . C4::Context->userenv->{'branch'} . "\") and subscription.branchcode <>\"\" and subscription.branchcode IS NOT NULL) as cannotedit ";
    }
    $query .= qq(             
       FROM subscription
       LEFT JOIN subscriptionhistory ON subscription.subscriptionid=subscriptionhistory.subscriptionid
       LEFT JOIN aqbooksellers ON subscription.aqbooksellerid=aqbooksellers.id
       LEFT JOIN biblio ON biblio.biblionumber=subscription.biblionumber
       WHERE subscription.subscriptionid = ?
    );

    #     if (C4::Context->preference('IndependantBranches') &&
    #         C4::Context->userenv &&
    #         C4::Context->userenv->{'flags'} != 1){
    # #       $debug and warn "flags: ".C4::Context->userenv->{'flags'};
    #       $query.=" AND subscription.branchcode IN ('".C4::Context->userenv->{'branch'}."',\"\")";
    #     }
    $debug and warn "query : $query\nsubsid :$subscriptionid";
    my $sth = $dbh->prepare($query);
    $sth->execute($subscriptionid);
    return $sth->fetchrow_hashref;
}

=head2 GetFullSubscription

=over 4

   \@res = GetFullSubscription($subscriptionid)
   this function read on serial table.

=back

=cut

sub GetFullSubscription {
    my ($subscriptionid) = @_;
    my $dbh              = C4::Context->dbh;
    my $query            = qq|
  SELECT    serial.serialid,
            serial.serialseq,
            serial.planneddate, 
            serial.publisheddate, 
            serial.status, 
            serial.notes as notes,
            year(IF(serial.publisheddate="00-00-0000",serial.planneddate,serial.publisheddate)) as year,
            aqbooksellers.name as aqbooksellername,
            biblio.title as bibliotitle,
            subscription.branchcode AS branchcode,
            subscription.subscriptionid AS subscriptionid |;
    if (   C4::Context->preference('IndependantBranches')
        && C4::Context->userenv
        && C4::Context->userenv->{'flags'} != 1
        && C4::Context->userenv->{'branch'} ) {
        $query .= "
      , ((subscription.branchcode <>\"" . C4::Context->userenv->{'branch'} . "\") and subscription.branchcode <>\"\" and subscription.branchcode IS NOT NULL) as cannotedit ";
    }
    $query .= qq|
  FROM      serial 
  LEFT JOIN subscription ON 
          (serial.subscriptionid=subscription.subscriptionid )
  LEFT JOIN aqbooksellers on subscription.aqbooksellerid=aqbooksellers.id 
  LEFT JOIN biblio on biblio.biblionumber=subscription.biblionumber 
  WHERE     serial.subscriptionid = ? 
  ORDER BY year DESC,
          IF(serial.publisheddate="00-00-0000",serial.planneddate,serial.publisheddate) DESC,
          serial.subscriptionid
          |;
    $debug and warn "GetFullSubscription query: $query";
    my $sth = $dbh->prepare($query);
    $sth->execute($subscriptionid);
    return $sth->fetchall_arrayref( {} );
}

=head2 PrepareSerialsData

=over 4

   \@res = PrepareSerialsData($serialinfomation)
   where serialinformation is a hashref array

=back

=cut

sub PrepareSerialsData {
    my ($lines) = @_;
    my %tmpresults;
    my $year;
    my @res;
    my $startdate;
    my $aqbooksellername;
    my $bibliotitle;
    my @loopissues;
    my $first;
    my $previousnote = "";

    foreach my $subs (@$lines) {
        $subs->{'publisheddate'} = (
            $subs->{'publisheddate'}
            ? format_date( $subs->{'publisheddate'} )
            : "XXX"
        );
        $subs->{'branchname'} = GetBranchName( $subs->{'branchcode'} );
        $subs->{'planneddate'}                  = format_date( $subs->{'planneddate'} );
        $subs->{ "status" . $subs->{'status'} } = 1;
        $subs->{"checked"}                      = $subs->{'status'} =~ /1|3|4|7/;

        if ( $subs->{'year'} && $subs->{'year'} ne "" ) {
            $year = $subs->{'year'};
        } else {
            $year = "manage";
        }
        if ( $tmpresults{$year} ) {
            push @{ $tmpresults{$year}->{'serials'} }, $subs;
        } else {
            $tmpresults{$year} = {
                'year'             => $year,
                'aqbooksellername' => $subs->{'aqbooksellername'},
                'bibliotitle'      => $subs->{'bibliotitle'},
                'serials'          => [$subs],
                'first'            => $first,
            };
        }
    }
    foreach my $key ( sort { $b cmp $a } keys %tmpresults ) {
        push @res, $tmpresults{$key};
    }
    $res[0]->{'first'} = 1;
    return \@res;
}

=head2 GetSubscriptionsFromBiblionumber

\@res = GetSubscriptionsFromBiblionumber($biblionumber)
this function get the subscription list. it reads on subscription table.
return :
table of subscription which has the biblionumber given on input arg.
each line of this table is a hashref. All hashes containt
startdate, histstartdate,opacnote,missinglist,recievedlist,periodicity,status & enddate

=cut

sub GetSubscriptionsFromBiblionumber {
    my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $query          = qq(
        SELECT subscription.*,
               branches.branchname,
               subscriptionhistory.*,
               aqbooksellers.name AS aqbooksellername,
               biblio.title AS bibliotitle
       FROM subscription
       LEFT JOIN subscriptionhistory ON subscription.subscriptionid=subscriptionhistory.subscriptionid
       LEFT JOIN aqbooksellers ON subscription.aqbooksellerid=aqbooksellers.id
       LEFT JOIN biblio ON biblio.biblionumber=subscription.biblionumber
       LEFT JOIN branches ON branches.branchcode=subscription.branchcode
       WHERE subscription.biblionumber = ?
    );
    my $sth = $dbh->prepare($query);
    $sth->execute($biblionumber);
    my @res;
    while ( my $subs = $sth->fetchrow_hashref ) {
        $subs->{startdate}     = format_date( $subs->{startdate} );
        $subs->{histstartdate} = format_date( $subs->{histstartdate} );
        $subs->{histenddate}   = format_date( $subs->{histenddate} );
        $subs->{opacnote}     =~ s/\n/\<br\/\>/g;
        $subs->{missinglist}  =~ s/\n/\<br\/\>/g;
        $subs->{recievedlist} =~ s/\n/\<br\/\>/g;
        $subs->{ "periodicity" . $subs->{periodicity} }     = 1;
        $subs->{ "numberpattern" . $subs->{numberpattern} } = 1;
        $subs->{ "status" . $subs->{'status'} }             = 1;
        $subs->{'cannotedit'} =
          (      C4::Context->preference('IndependantBranches')
              && C4::Context->userenv
              && C4::Context->userenv->{flags} % 2 != 1
              && C4::Context->userenv->{branch}
              && $subs->{branchcode}
              && ( C4::Context->userenv->{branch} ne $subs->{branchcode} ) );

        if ( $subs->{enddate} eq '0000-00-00' ) {
            $subs->{enddate} = '';
        } else {
            $subs->{enddate} = format_date( $subs->{enddate} );
        }
        $subs->{'abouttoexpire'}       = abouttoexpire( $subs->{'subscriptionid'} );
        $subs->{'subscriptionexpired'} = HasSubscriptionExpired( $subs->{'subscriptionid'} );
        push @res, $subs;
    }
    return \@res;
}

=head2 GetFullSubscriptionsFromBiblionumber

=over 4

   \@res = GetFullSubscriptionsFromBiblionumber($biblionumber)
   this function read on serial table.

=back

=cut

sub GetFullSubscriptionsFromBiblionumber {
    my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $query          = qq|
  SELECT    serial.serialid,
            serial.serialseq,
            serial.planneddate, 
            serial.publisheddate, 
            serial.status, 
            serial.notes as notes,
            year(IF(serial.publisheddate="00-00-0000",serial.planneddate,serial.publisheddate)) as year,
            biblio.title as bibliotitle,
            subscription.branchcode AS branchcode,
            subscription.subscriptionid AS subscriptionid|;
    if (   C4::Context->preference('IndependantBranches')
        && C4::Context->userenv
        && C4::Context->userenv->{'flags'} != 1
        && C4::Context->userenv->{'branch'} ) {
        $query .= "
      , ((subscription.branchcode <>\"" . C4::Context->userenv->{'branch'} . "\") and subscription.branchcode <>\"\" and subscription.branchcode IS NOT NULL) as cannotedit ";
    }

    $query .= qq|      
  FROM      serial 
  LEFT JOIN subscription ON 
          (serial.subscriptionid=subscription.subscriptionid)
  LEFT JOIN aqbooksellers on subscription.aqbooksellerid=aqbooksellers.id 
  LEFT JOIN biblio on biblio.biblionumber=subscription.biblionumber 
  WHERE     subscription.biblionumber = ? 
  ORDER BY year DESC,
          IF(serial.publisheddate="00-00-0000",serial.planneddate,serial.publisheddate) DESC,
          serial.subscriptionid
          |;
    my $sth = $dbh->prepare($query);
    $sth->execute($biblionumber);
    return $sth->fetchall_arrayref( {} );
}

=head2 GetSubscriptions

=over 4

@results = GetSubscriptions($title,$ISSN,$biblionumber);
this function get all subscriptions which has title like $title,ISSN like $ISSN and biblionumber like $biblionumber.
return:
a table of hashref. Each hash containt the subscription.

=back

=cut

sub GetSubscriptions {
    my ( $string, $issn, $biblionumber ) = @_;

    #return unless $title or $ISSN or $biblionumber;
    my $dbh = C4::Context->dbh;
    my $sth;
    my $sql = qq(
            SELECT subscription.*, subscriptionhistory.*, biblio.title,biblioitems.issn,biblio.biblionumber
            FROM   subscription
            LEFT JOIN subscriptionhistory USING(subscriptionid)
            LEFT JOIN biblio ON biblio.biblionumber = subscription.biblionumber
            LEFT JOIN biblioitems ON biblio.biblionumber = biblioitems.biblionumber
    );
    my @bind_params;
    my $sqlwhere;
    if ($biblionumber) {
        $sqlwhere = "   WHERE biblio.biblionumber=?";
        push @bind_params, $biblionumber;
    }
    if ($string) {
        my @sqlstrings;
        my @strings_to_search;
        @strings_to_search = map { "%$_%" } split( / /, $string );
        foreach my $index qw(biblio.title subscription.callnumber subscription.location subscription.notes subscription.internalnotes) {
            push @bind_params, @strings_to_search;
            my $tmpstring = "AND $index LIKE ? " x scalar(@strings_to_search);
            $debug && warn "$tmpstring";
            $tmpstring =~ s/^AND //;
            push @sqlstrings, $tmpstring;
        }
        $sqlwhere .= ( $sqlwhere ? " AND " : " WHERE " ) . "(" . join( ") OR (", @sqlstrings ) . ")";
    }
    if ($issn) {
        my @sqlstrings;
        my @strings_to_search;
        @strings_to_search = map { "%$_%" } split( / /, $issn );
        foreach my $index qw(biblioitems.issn subscription.callnumber) {
            push @bind_params, @strings_to_search;
            my $tmpstring = "OR $index LIKE ? " x scalar(@strings_to_search);
            $debug && warn "$tmpstring";
            $tmpstring =~ s/^OR //;
            push @sqlstrings, $tmpstring;
        }
        $sqlwhere .= ( $sqlwhere ? " AND " : " WHERE " ) . "(" . join( ") OR (", @sqlstrings ) . ")";
    }
    $sql .= "$sqlwhere ORDER BY title";
    $debug and warn "GetSubscriptions query: $sql params : ", join( " ", @bind_params );
    $sth = $dbh->prepare($sql);
    $sth->execute(@bind_params);
    my @results;
    my $previoustitle = "";
    my $odd           = 1;

    while ( my $line = $sth->fetchrow_hashref ) {
        if ( $previoustitle eq $line->{title} ) {
            $line->{title} = "";
            $line->{issn}  = "";
        } else {
            $previoustitle = $line->{title};
            $odd           = -$odd;
        }
        $line->{toggle} = 1 if $odd == 1;
        $line->{'cannotedit'} =
          (      C4::Context->preference('IndependantBranches')
              && C4::Context->userenv
              && C4::Context->userenv->{flags} % 2 != 1
              && C4::Context->userenv->{branch}
              && $line->{branchcode}
              && ( C4::Context->userenv->{branch} ne $line->{branchcode} ) );
        push @results, $line;
    }
    return @results;
}

=head2 GetSerials

=over 4

($totalissues,@serials) = GetSerials($subscriptionid);
this function get every serial not arrived for a given subscription
as well as the number of issues registered in the database (all types)
this number is used to see if a subscription can be deleted (=it must have only 1 issue)

FIXME: We should return \@serials.

=back

=cut

sub GetSerials {
    my ( $subscriptionid, $count ) = @_;
    my $dbh = C4::Context->dbh;

    # status = 2 is "arrived"
    my $counter = 0;
    $count = 5 unless ($count);
    my @serials;
    my $query = "SELECT serialid,serialseq, status, publisheddate, planneddate,notes, routingnotes
                        FROM   serial
                        WHERE  subscriptionid = ? AND status NOT IN (2,4,5) 
                        ORDER BY IF(publisheddate<>'0000-00-00',publisheddate,planneddate) DESC";
    my $sth = $dbh->prepare($query);
    $sth->execute($subscriptionid);

    while ( my $line = $sth->fetchrow_hashref ) {
        $line->{ "status" . $line->{status} } = 1;                                         # fills a "statusX" value, used for template status select list
        $line->{"publisheddate"}              = format_date( $line->{"publisheddate"} );
        $line->{"planneddate"}                = format_date( $line->{"planneddate"} );
        push @serials, $line;
    }

    # OK, now add the last 5 issues arrives/missing
    $query = "SELECT   serialid,serialseq, status, planneddate, publisheddate,notes, routingnotes
       FROM     serial
       WHERE    subscriptionid = ?
       AND      (status in (2,4,5))
       ORDER BY IF(publisheddate<>'0000-00-00',publisheddate,planneddate) DESC
      ";
    $sth = $dbh->prepare($query);
    $sth->execute($subscriptionid);
    while ( ( my $line = $sth->fetchrow_hashref ) && $counter < $count ) {
        $counter++;
        $line->{ "status" . $line->{status} } = 1;                                         # fills a "statusX" value, used for template status select list
        $line->{"planneddate"}                = format_date( $line->{"planneddate"} );
        $line->{"publisheddate"}              = format_date( $line->{"publisheddate"} );
        push @serials, $line;
    }

    $query = "SELECT count(*) FROM serial WHERE subscriptionid=?";
    $sth   = $dbh->prepare($query);
    $sth->execute($subscriptionid);
    my ($totalissues) = $sth->fetchrow;
    return ( $totalissues, @serials );
}

=head2 GetSerials2

=over 4

($totalissues,@serials) = GetSerials2($subscriptionid,$status);
this function get every serial waited for a given subscription
as well as the number of issues registered in the database (all types)
this number is used to see if a subscription can be deleted (=it must have only 1 issue)

=back

=cut

sub GetSerials2 {
    my ( $subscription, $status ) = @_;
    my $dbh   = C4::Context->dbh;
    my $query = qq|
                 SELECT   serialid,serialseq, status, planneddate, publisheddate,notes, routingnotes
                 FROM     serial 
                 WHERE    subscriptionid=$subscription AND status IN ($status)
                 ORDER BY publisheddate,serialid DESC
                    |;
    $debug and warn "GetSerials2 query: $query";
    my $sth = $dbh->prepare($query);
    $sth->execute;
    my @serials;

    while ( my $line = $sth->fetchrow_hashref ) {
        $line->{ "status" . $line->{status} } = 1;                                         # fills a "statusX" value, used for template status select list
        $line->{"planneddate"}                = format_date( $line->{"planneddate"} );
        $line->{"publisheddate"}              = format_date( $line->{"publisheddate"} );
        push @serials, $line;
    }
    my ($totalissues) = scalar(@serials);
    return ( $totalissues, @serials );
}

=head2 GetLatestSerials

=over 4

\@serials = GetLatestSerials($subscriptionid,$limit)
get the $limit's latest serials arrived or missing for a given subscription
return :
a ref to a table which it containts all of the latest serials stored into a hash.

=back

=cut

sub GetLatestSerials {
    my ( $subscriptionid, $limit ) = @_;
    my $dbh = C4::Context->dbh;

    # status = 2 is "arrived"
    my $strsth = "SELECT   serialid,serialseq, status, planneddate, notes
                        FROM     serial
                        WHERE    subscriptionid = ?
                        AND      (status =2 or status=4)
                        ORDER BY planneddate DESC LIMIT 0,$limit
                ";
    my $sth = $dbh->prepare($strsth);
    $sth->execute($subscriptionid);
    my @serials;
    while ( my $line = $sth->fetchrow_hashref ) {
        $line->{ "status" . $line->{status} } = 1;                        # fills a "statusX" value, used for template status select list
        $line->{"planneddate"} = format_date( $line->{"planneddate"} );
        push @serials, $line;
    }

    #     my $query = qq|
    #         SELECT count(*)
    #         FROM   serial
    #         WHERE  subscriptionid=?
    #     |;
    #     $sth=$dbh->prepare($query);
    #     $sth->execute($subscriptionid);
    #     my ($totalissues) = $sth->fetchrow;
    return \@serials;
}

=head2 GetDistributedTo

=over 4

$distributedto=GetDistributedTo($subscriptionid)
This function select the old previous value of distributedto in the database.

=back

=cut

sub GetDistributedTo {
    my $dbh = C4::Context->dbh;
    my $distributedto;
    my $subscriptionid = @_;
    my $query          = "SELECT distributedto FROM subscription WHERE subscriptionid=?";
    my $sth            = $dbh->prepare($query);
    $sth->execute($subscriptionid);
    return ($distributedto) = $sth->fetchrow;
}

=head2 GetNextSeq

=over 4

GetNextSeq($val)
$val is a hashref containing all the attributes of the table 'subscription'
This function get the next issue for the subscription given on input arg
return:
all the input params updated.

=back

=cut

# sub GetNextSeq {
#     my ($val) =@_;
#     my ($calculated,$newlastvalue1,$newlastvalue2,$newlastvalue3,$newinnerloop1,$newinnerloop2,$newinnerloop3);
#     $calculated = $val->{numberingmethod};
# # calculate the (expected) value of the next issue recieved.
#     $newlastvalue1 = $val->{lastvalue1};
# # check if we have to increase the new value.
#     $newinnerloop1 = $val->{innerloop1}+1;
#     $newinnerloop1=0 if ($newinnerloop1 >= $val->{every1});
#     $newlastvalue1 += $val->{add1} if ($newinnerloop1<1); # <1 to be true when 0 or empty.
#     $newlastvalue1=$val->{setto1} if ($newlastvalue1>$val->{whenmorethan1}); # reset counter if needed.
#     $calculated =~ s/\{X\}/$newlastvalue1/g;
#
#     $newlastvalue2 = $val->{lastvalue2};
# # check if we have to increase the new value.
#     $newinnerloop2 = $val->{innerloop2}+1;
#     $newinnerloop2=0 if ($newinnerloop2 >= $val->{every2});
#     $newlastvalue2 += $val->{add2} if ($newinnerloop2<1); # <1 to be true when 0 or empty.
#     $newlastvalue2=$val->{setto2} if ($newlastvalue2>$val->{whenmorethan2}); # reset counter if needed.
#     $calculated =~ s/\{Y\}/$newlastvalue2/g;
#
#     $newlastvalue3 = $val->{lastvalue3};
# # check if we have to increase the new value.
#     $newinnerloop3 = $val->{innerloop3}+1;
#     $newinnerloop3=0 if ($newinnerloop3 >= $val->{every3});
#     $newlastvalue3 += $val->{add3} if ($newinnerloop3<1); # <1 to be true when 0 or empty.
#     $newlastvalue3=$val->{setto3} if ($newlastvalue3>$val->{whenmorethan3}); # reset counter if needed.
#     $calculated =~ s/\{Z\}/$newlastvalue3/g;
#     return ($calculated,$newlastvalue1,$newlastvalue2,$newlastvalue3,$newinnerloop1,$newinnerloop2,$newinnerloop3);
# }

sub GetNextSeq {
    my ($val) = @_;
    my ( $calculated, $newlastvalue1, $newlastvalue2, $newlastvalue3, $newinnerloop1, $newinnerloop2, $newinnerloop3 );
    my $pattern          = $val->{numberpattern};
    my @seasons          = ( 'nothing', 'Winter', 'Spring', 'Summer', 'Autumn' );
    my @southern_seasons = ( '', 'Summer', 'Autumn', 'Winter', 'Spring' );
    $calculated    = $val->{numberingmethod};
    $newlastvalue1 = $val->{lastvalue1};
    $newlastvalue2 = $val->{lastvalue2};
    $newlastvalue3 = $val->{lastvalue3};
    $newlastvalue1 = $val->{lastvalue1};

    # check if we have to increase the new value.
    $newinnerloop1 = $val->{innerloop1} + 1;
    $newinnerloop1 = 0 if ( $newinnerloop1 >= $val->{every1} );
    $newlastvalue1 += $val->{add1} if ( $newinnerloop1 < 1 );    # <1 to be true when 0 or empty.
    $newlastvalue1 = $val->{setto1} if ( $newlastvalue1 > $val->{whenmorethan1} );    # reset counter if needed.
    $calculated =~ s/\{X\}/$newlastvalue1/g;

    $newlastvalue2 = $val->{lastvalue2};

    # check if we have to increase the new value.
    $newinnerloop2 = $val->{innerloop2} + 1;
    $newinnerloop2 = 0 if ( $newinnerloop2 >= $val->{every2} );
    $newlastvalue2 += $val->{add2} if ( $newinnerloop2 < 1 );                         # <1 to be true when 0 or empty.
    $newlastvalue2 = $val->{setto2} if ( $newlastvalue2 > $val->{whenmorethan2} );    # reset counter if needed.
    if ( $pattern == 6 ) {
        if ( $val->{hemisphere} == 2 ) {
            my $newlastvalue2seq = $southern_seasons[$newlastvalue2];
            $calculated =~ s/\{Y\}/$newlastvalue2seq/g;
        } else {
            my $newlastvalue2seq = $seasons[$newlastvalue2];
            $calculated =~ s/\{Y\}/$newlastvalue2seq/g;
        }
    } else {
        $calculated =~ s/\{Y\}/$newlastvalue2/g;
    }

    $newlastvalue3 = $val->{lastvalue3};

    # check if we have to increase the new value.
    $newinnerloop3 = $val->{innerloop3} + 1;
    $newinnerloop3 = 0 if ( $newinnerloop3 >= $val->{every3} );
    $newlastvalue3 += $val->{add3} if ( $newinnerloop3 < 1 );    # <1 to be true when 0 or empty.
    $newlastvalue3 = $val->{setto3} if ( $newlastvalue3 > $val->{whenmorethan3} );    # reset counter if needed.
    $calculated =~ s/\{Z\}/$newlastvalue3/g;

    return ( $calculated, $newlastvalue1, $newlastvalue2, $newlastvalue3, $newinnerloop1, $newinnerloop2, $newinnerloop3 );
}

=head2 GetSeq

=over 4

$calculated = GetSeq($val)
$val is a hashref containing all the attributes of the table 'subscription'
this function transforms {X},{Y},{Z} to 150,0,0 for example.
return:
the sequence in integer format

=back

=cut

sub GetSeq {
    my ($val) = @_;
    my $pattern = $val->{numberpattern};
    my @seasons          = ( 'nothing', 'Winter', 'Spring', 'Summer', 'Autumn' );
    my @southern_seasons = ( '',        'Summer', 'Autumn', 'Winter', 'Spring' );
    my $calculated       = $val->{numberingmethod};
    my $x                = $val->{'lastvalue1'};
    $calculated =~ s/\{X\}/$x/g;
    my $newlastvalue2 = $val->{'lastvalue2'};

    if ( $pattern == 6 ) {
        if ( $val->{hemisphere} == 2 ) {
            my $newlastvalue2seq = $southern_seasons[$newlastvalue2];
            $calculated =~ s/\{Y\}/$newlastvalue2seq/g;
        } else {
            my $newlastvalue2seq = $seasons[$newlastvalue2];
            $calculated =~ s/\{Y\}/$newlastvalue2seq/g;
        }
    } else {
        $calculated =~ s/\{Y\}/$newlastvalue2/g;
    }
    my $z = $val->{'lastvalue3'};
    $calculated =~ s/\{Z\}/$z/g;
    return $calculated;
}

=head2 GetExpirationDate

$sensddate = GetExpirationDate($subscriptionid)

this function return the next expiration date for a subscription given on input args.

return
the enddate

=cut

sub GetExpirationDate {
    my ( $subscriptionid, $startdate ) = @_;
    my $dbh          = C4::Context->dbh;
    my $subscription = GetSubscription($subscriptionid);
    my $enddate;

    # we don't do the same test if the subscription is based on X numbers or on X weeks/months
    $enddate = $startdate || $subscription->{startdate};
    my @date = split( /-/, $enddate );
    return if ( scalar(@date) != 3 || not check_date(@date) );
    if ( ( $subscription->{periodicity} % 16 ) > 0 ) {

        # If Not Irregular
        if ( my $length = $subscription->{numberlength} ) {

            #calculate the date of the last issue.
            for ( my $i = 1 ; $i <= $length ; $i++ ) {
                $enddate = GetNextDate( $enddate, $subscription );
            }
        } elsif ( $subscription->{monthlength} ) {
            if ( $$subscription{startdate} ) {
                my @enddate = Add_Delta_YM( $date[0], $date[1], $date[2], 0, $subscription->{monthlength} );
                $enddate = sprintf( "%04d-%02d-%02d", $enddate[0], $enddate[1], $enddate[2] );
            }
        } elsif ( $subscription->{weeklength} ) {
            if ( $$subscription{startdate} ) {
                my @date = split( /-/, $subscription->{startdate} );
                my @enddate = Add_Delta_Days( $date[0], $date[1], $date[2], $subscription->{weeklength} * 7 );
                $enddate = sprintf( "%04d-%02d-%02d", $enddate[0], $enddate[1], $enddate[2] );
            }
        }
        return $enddate;
    } else {
        return;
    }
}

=head2 CountSubscriptionFromBiblionumber

=over 4

$subscriptionsnumber = CountSubscriptionFromBiblionumber($biblionumber)
this count the number of subscription for a biblionumber given.
return :
the number of subscriptions with biblionumber given on input arg.

=back

=cut

sub CountSubscriptionFromBiblionumber {
    my ($biblionumber) = @_;
    my $dbh            = C4::Context->dbh;
    my $query          = "SELECT count(*) FROM subscription WHERE biblionumber=?";
    my $sth            = $dbh->prepare($query);
    $sth->execute($biblionumber);
    my $subscriptionsnumber = $sth->fetchrow;
    return $subscriptionsnumber;
}

=head2 ModSubscriptionHistory

=over 4

ModSubscriptionHistory($subscriptionid,$histstartdate,$enddate,$recievedlist,$missinglist,$opacnote,$librariannote);

this function modify the history of a subscription. Put your new values on input arg.

=back

=cut

sub ModSubscriptionHistory {
    my ( $subscriptionid, $histstartdate, $enddate, $recievedlist, $missinglist, $opacnote, $librariannote ) = @_;
    my $dbh   = C4::Context->dbh;
    my $query = "UPDATE subscriptionhistory 
                    SET histstartdate=?,histenddate=?,recievedlist=?,missinglist=?,opacnote=?,librariannote=?
                    WHERE subscriptionid=?
                ";
    my $sth = $dbh->prepare($query);
    $recievedlist =~ s/^; //;
    $missinglist  =~ s/^; //;
    $opacnote     =~ s/^; //;
    $sth->execute( $histstartdate, $enddate, $recievedlist, $missinglist, $opacnote, $librariannote, $subscriptionid );
    return $sth->rows;
}

=head2 ModSerialStatus

=over 4

ModSerialStatus($serialid,$serialseq, $planneddate,$publisheddate,$status,$notes)

This function modify the serial status. Serial status is a number.(eg 2 is "arrived")
Note : if we change from "waited" to something else,then we will have to create a new "waited" entry

=back

=cut

sub ModSerialStatus {
    my ( $serialid, $serialseq, $planneddate, $publisheddate, $status, $notes ) = @_;

    #It is a usual serial
    # 1st, get previous status :
    my $dbh   = C4::Context->dbh;
    my $query = "SELECT subscriptionid,status FROM serial WHERE  serialid=?";
    my $sth   = $dbh->prepare($query);
    $sth->execute($serialid);
    my ( $subscriptionid, $oldstatus ) = $sth->fetchrow;

    # change status & update subscriptionhistory
    my $val;
    if ( $status eq 6 ) {
        DelIssue( { 'serialid' => $serialid, 'subscriptionid' => $subscriptionid, 'serialseq' => $serialseq } );
    } else {
        my $query = "UPDATE serial SET serialseq=?,publisheddate=?,planneddate=?,status=?,notes=? WHERE  serialid = ?";
        $sth = $dbh->prepare($query);
        $sth->execute( $serialseq, $publisheddate, $planneddate, $status, $notes, $serialid );
        $query = "SELECT * FROM   subscription WHERE  subscriptionid = ?";
        $sth   = $dbh->prepare($query);
        $sth->execute($subscriptionid);
        my $val = $sth->fetchrow_hashref;
        unless ( $val->{manualhistory} ) {
            $query = "SELECT missinglist,recievedlist FROM subscriptionhistory WHERE  subscriptionid=?";
            $sth   = $dbh->prepare($query);
            $sth->execute($subscriptionid);
            my ( $missinglist, $recievedlist ) = $sth->fetchrow;
            if ( $status eq 2 ) {

                $recievedlist .= "; $serialseq"
                  unless ( index( "$recievedlist", "$serialseq" ) >= 0 );
            }

            #         warn "missinglist : $missinglist serialseq :$serialseq, ".index("$missinglist","$serialseq");
            $missinglist .= "; $serialseq"
              if ( $status eq 4
                and not index( "$missinglist", "$serialseq" ) >= 0 );
            $missinglist .= "; $serialseq"
              if ( $status eq 5
                and index( "$missinglist", "$serialseq" ) >= 0 );
            $query = "UPDATE subscriptionhistory SET recievedlist=?, missinglist=? WHERE  subscriptionid=?";
            $sth   = $dbh->prepare($query);
            $recievedlist =~ s/^; //;
            $missinglist  =~ s/^; //;
            $sth->execute( $recievedlist, $missinglist, $subscriptionid );
        }
    }

    # create new waited entry if needed (ie : was a "waited" and has changed)
    if ( $oldstatus eq 1 && $status ne 1 ) {
        my $query = "SELECT * FROM   subscription WHERE  subscriptionid = ?";
        $sth = $dbh->prepare($query);
        $sth->execute($subscriptionid);
        my $val = $sth->fetchrow_hashref;

        # next issue number
        #     warn "Next Seq";
        my ( $newserialseq, $newlastvalue1, $newlastvalue2, $newlastvalue3, $newinnerloop1, $newinnerloop2, $newinnerloop3 ) = GetNextSeq($val);

        #     warn "Next Seq End";

        # next date (calculated from actual date & frequency parameters)
        #         warn "publisheddate :$publisheddate ";
        my $nextpublisheddate = GetNextDate( $publisheddate, $val );
        NewIssue( $newserialseq, $subscriptionid, $val->{'biblionumber'}, 1, $nextpublisheddate, $nextpublisheddate );
        $query = "UPDATE subscription SET lastvalue1=?, lastvalue2=?, lastvalue3=?, innerloop1=?, innerloop2=?, innerloop3=?
                    WHERE  subscriptionid = ?";
        $sth = $dbh->prepare($query);
        $sth->execute( $newlastvalue1, $newlastvalue2, $newlastvalue3, $newinnerloop1, $newinnerloop2, $newinnerloop3, $subscriptionid );

        # check if an alert must be sent... (= a letter is defined & status became "arrived"
        if ( $val->{letter} && $status eq 2 && $oldstatus ne 2 ) {
            SendAlerts( 'issue', $val->{subscriptionid}, $val->{letter} );
        }
    }
}

=head2 GetNextExpected

=over 4

$nextexpected = GetNextExpected($subscriptionid)

Get the planneddate for the current expected issue of the subscription.

returns a hashref:

$nextexepected = {
    serialid => int
    planneddate => C4::Dates object
    }

=back

=cut

sub GetNextExpected($) {
    my ($subscriptionid) = @_;
    my $dbh              = C4::Context->dbh;
    my $sth              = $dbh->prepare('SELECT serialid, planneddate FROM serial WHERE subscriptionid=? AND status=?');

    # Each subscription has only one 'expected' issue, with serial.status==1.
    $sth->execute( $subscriptionid, 1 );
    my ($nextissue) = $sth->fetchrow_hashref;
    if ( not $nextissue ) {
        $sth = $dbh->prepare('SELECT serialid,planneddate FROM serial WHERE subscriptionid  = ? ORDER BY planneddate DESC LIMIT 1');
        $sth->execute($subscriptionid);
        $nextissue = $sth->fetchrow_hashref;
    }
    $nextissue->{planneddate} = C4::Dates->new( $nextissue->{planneddate}, 'iso' );
    return $nextissue;

}

=head2 ModNextExpected

=over 4

ModNextExpected($subscriptionid,$date)

Update the planneddate for the current expected issue of the subscription.
This will modify all future prediction results.  

C<$date> is a C4::Dates object.

=back

=cut

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

    #FIXME: Would expect to only set planneddate, but we set both on new issue creation, so updating it here
    my $sth = $dbh->prepare('UPDATE serial SET planneddate=?,publisheddate=? WHERE subscriptionid=? AND status=?');

    # Each subscription has only one 'expected' issue, with serial.status==1.
    $sth->execute( $date->output('iso'), $date->output('iso'), $subscriptionid, 1 );
    return 0;

}

=head2 ModSubscription

=over 4

this function modify a subscription. Put all new values on input args.

=back

=cut

sub ModSubscription {
    my ($auser,           $branchcode,      $aqbooksellerid,    $cost,             $aqbudgetid,    $startdate,   $periodicity,   $firstacquidate,
        $dow,             $irregularity,    $numberpattern,     $numberlength,     $weeklength,    $monthlength, $add1,          $every1,
        $whenmorethan1,   $setto1,          $lastvalue1,        $innerloop1,       $add2,          $every2,      $whenmorethan2, $setto2,
        $lastvalue2,      $innerloop2,      $add3,              $every3,           $whenmorethan3, $setto3,      $lastvalue3,    $innerloop3,
        $numberingmethod, $status,          $biblionumber,      $callnumber,       $notes,         $letter,      $hemisphere,    $manualhistory,
        $internalnotes,   $serialsadditems, $staffdisplaycount, $opacdisplaycount, $graceperiod,   $location,    $enddate,       $subscriptionid
    ) = @_;

    #     warn $irregularity;
    my $dbh   = C4::Context->dbh;
    my $query = "UPDATE subscription
                    SET librarian=?, branchcode=?,aqbooksellerid=?,cost=?,aqbudgetid=?,startdate=?,
                        periodicity=?,firstacquidate=?,dow=?,irregularity=?, numberpattern=?, numberlength=?,weeklength=?,monthlength=?,
                        add1=?,every1=?,whenmorethan1=?,setto1=?,lastvalue1=?,innerloop1=?,
                        add2=?,every2=?,whenmorethan2=?,setto2=?,lastvalue2=?,innerloop2=?,
                        add3=?,every3=?,whenmorethan3=?,setto3=?,lastvalue3=?,innerloop3=?,
                        numberingmethod=?, status=?, biblionumber=?, callnumber=?, notes=?, 
						letter=?, hemisphere=?,manualhistory=?,internalnotes=?,serialsadditems=?,
						staffdisplaycount = ?,opacdisplaycount = ?, graceperiod = ?, location = ?
						,enddate=?
                    WHERE subscriptionid = ?";

    #warn "query :".$query;
    my $sth = $dbh->prepare($query);
    $sth->execute(
        $auser,           $branchcode,     $aqbooksellerid, $cost,
        $aqbudgetid,      $startdate,      $periodicity,    $firstacquidate,
        $dow,             "$irregularity", $numberpattern,  $numberlength,
        $weeklength,      $monthlength,    $add1,           $every1,
        $whenmorethan1,   $setto1,         $lastvalue1,     $innerloop1,
        $add2,            $every2,         $whenmorethan2,  $setto2,
        $lastvalue2,      $innerloop2,     $add3,           $every3,
        $whenmorethan3,   $setto3,         $lastvalue3,     $innerloop3,
        $numberingmethod, $status,         $biblionumber,   $callnumber,
        $notes, $letter, $hemisphere, ( $manualhistory ? $manualhistory : 0 ),
        $internalnotes, $serialsadditems, $staffdisplaycount, $opacdisplaycount,
        $graceperiod,   $location,        $enddate,           $subscriptionid
    );
    my $rows = $sth->rows;
    $sth->finish;

    logaction( "SERIAL", "MODIFY", $subscriptionid, "" ) if C4::Context->preference("SubscriptionLog");
    return $rows;
}

=head2 NewSubscription

=over 4

$subscriptionid = &NewSubscription($auser,branchcode,$aqbooksellerid,$cost,$aqbudgetid,$biblionumber,
    $startdate,$periodicity,$dow,$numberlength,$weeklength,$monthlength,
    $add1,$every1,$whenmorethan1,$setto1,$lastvalue1,$innerloop1,
    $add2,$every2,$whenmorethan2,$setto2,$lastvalue2,$innerloop2,
    $add3,$every3,$whenmorethan3,$setto3,$lastvalue3,$innerloop3,
    $numberingmethod, $status, $notes, $serialsadditems,
    $staffdisplaycount, $opacdisplaycount, $graceperiod, $location, $enddate);

Create a new subscription with value given on input args.

return :
the id of this new subscription

=back

=cut

sub NewSubscription {
    my ($auser,         $branchcode,      $aqbooksellerid,    $cost,             $aqbudgetid,    $biblionumber, $startdate,       $periodicity,
        $dow,           $numberlength,    $weeklength,        $monthlength,      $add1,          $every1,       $whenmorethan1,   $setto1,
        $lastvalue1,    $innerloop1,      $add2,              $every2,           $whenmorethan2, $setto2,       $lastvalue2,      $innerloop2,
        $add3,          $every3,          $whenmorethan3,     $setto3,           $lastvalue3,    $innerloop3,   $numberingmethod, $status,
        $notes,         $letter,          $firstacquidate,    $irregularity,     $numberpattern, $callnumber,   $hemisphere,      $manualhistory,
        $internalnotes, $serialsadditems, $staffdisplaycount, $opacdisplaycount, $graceperiod,   $location,     $enddate
    ) = @_;
    my $dbh = C4::Context->dbh;

    #save subscription (insert into database)
    my $query = qq|
        INSERT INTO subscription
            (librarian,branchcode,aqbooksellerid,cost,aqbudgetid,biblionumber,
            startdate,periodicity,dow,numberlength,weeklength,monthlength,
            add1,every1,whenmorethan1,setto1,lastvalue1,innerloop1,
            add2,every2,whenmorethan2,setto2,lastvalue2,innerloop2,
            add3,every3,whenmorethan3,setto3,lastvalue3,innerloop3,
            numberingmethod, status, notes, letter,firstacquidate,irregularity,
            numberpattern, callnumber, hemisphere,manualhistory,internalnotes,serialsadditems,
            staffdisplaycount,opacdisplaycount,graceperiod,location,enddate)
        VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
        |;
    my $sth = $dbh->prepare($query);
    $sth->execute(
        $auser,         $branchcode,      $aqbooksellerid,    $cost,             $aqbudgetid,    $biblionumber, $startdate,       $periodicity,
        $dow,           $numberlength,    $weeklength,        $monthlength,      $add1,          $every1,       $whenmorethan1,   $setto1,
        $lastvalue1,    $innerloop1,      $add2,              $every2,           $whenmorethan2, $setto2,       $lastvalue2,      $innerloop2,
        $add3,          $every3,          $whenmorethan3,     $setto3,           $lastvalue3,    $innerloop3,   $numberingmethod, "$status",
        $notes,         $letter,          $firstacquidate,    $irregularity,     $numberpattern, $callnumber,   $hemisphere,      $manualhistory,
        $internalnotes, $serialsadditems, $staffdisplaycount, $opacdisplaycount, $graceperiod,   $location,     $enddate
    );

    #then create the 1st waited number
    my $subscriptionid = $dbh->{'mysql_insertid'};
    $query = qq(
        INSERT INTO subscriptionhistory
            (biblionumber, subscriptionid, histstartdate,  opacnote, librariannote)
        VALUES (?,?,?,?,?)
        );
    $sth = $dbh->prepare($query);
    $sth->execute( $biblionumber, $subscriptionid, $startdate, $notes, $internalnotes );

    # reread subscription to get a hash (for calculation of the 1st issue number)
    $query = qq(
        SELECT *
        FROM   subscription
        WHERE  subscriptionid = ?
    );
    $sth = $dbh->prepare($query);
    $sth->execute($subscriptionid);
    my $val = $sth->fetchrow_hashref;

    # calculate issue number
    my $serialseq = GetSeq($val);
    $query = qq|
        INSERT INTO serial
            (serialseq,subscriptionid,biblionumber,status, planneddate, publisheddate)
        VALUES (?,?,?,?,?,?)
    |;
    $sth = $dbh->prepare($query);
    $sth->execute( "$serialseq", $subscriptionid, $biblionumber, 1, $firstacquidate, $firstacquidate );

    logaction( "SERIAL", "ADD", $subscriptionid, "" ) if C4::Context->preference("SubscriptionLog");

    #set serial flag on biblio if not already set.
    my ( $null, ($bib) ) = GetBiblio($biblionumber);
    if ( !$bib->{'serial'} ) {
        my $record = GetMarcBiblio($biblionumber);
        my ( $tag, $subf ) = GetMarcFromKohaField( 'biblio.serial', $bib->{'frameworkcode'} );
        if ($tag) {
            eval { $record->field($tag)->update( $subf => 1 ); };
        }
        ModBiblio( $record, $biblionumber, $bib->{'frameworkcode'} );
    }
    return $subscriptionid;
}

=head2 ReNewSubscription

=over 4

ReNewSubscription($subscriptionid,$user,$startdate,$numberlength,$weeklength,$monthlength,$note)

this function renew a subscription with values given on input args.

=back

=cut

sub ReNewSubscription {
    my ( $subscriptionid, $user, $startdate, $numberlength, $weeklength, $monthlength, $note ) = @_;
    my $dbh          = C4::Context->dbh;
    my $subscription = GetSubscription($subscriptionid);
    my $query        = qq|
         SELECT *
         FROM   biblio 
         LEFT JOIN biblioitems ON biblio.biblionumber=biblioitems.biblionumber
         WHERE    biblio.biblionumber=?
     |;
    my $sth = $dbh->prepare($query);
    $sth->execute( $subscription->{biblionumber} );
    my $biblio = $sth->fetchrow_hashref;

    if ( C4::Context->preference("RenewSerialAddsSuggestion") ) {

        NewSuggestion(
            {   'suggestedby'   => $user,
                'title'         => $subscription->{bibliotitle},
                'author'        => $biblio->{author},
                'publishercode' => $biblio->{publishercode},
                'note'          => $biblio->{note},
                'biblionumber'  => $subscription->{biblionumber}
            }
        );
    }

    # renew subscription
    $query = qq|
        UPDATE subscription
        SET    startdate=?,numberlength=?,weeklength=?,monthlength=?
        WHERE  subscriptionid=?
    |;
    $sth = $dbh->prepare($query);
    $sth->execute( $startdate, $numberlength, $weeklength, $monthlength, $subscriptionid );
    my $enddate = GetExpirationDate($subscriptionid);
	$debug && warn "enddate :$enddate";
    $query = qq|
        UPDATE subscription
        SET    enddate=?
        WHERE  subscriptionid=?
    |;
    $sth = $dbh->prepare($query);
    $sth->execute( $enddate, $subscriptionid );
    $query = qq|
        UPDATE subscriptionhistory
        SET    histenddate=?
        WHERE  subscriptionid=?
    |;
    $sth = $dbh->prepare($query);
    $sth->execute( $enddate, $subscriptionid );

    logaction( "SERIAL", "RENEW", $subscriptionid, "" ) if C4::Context->preference("SubscriptionLog");
}

=head2 NewIssue

=over 4

NewIssue($serialseq,$subscriptionid,$biblionumber,$status, $planneddate, $publisheddate,  $notes)

Create a new issue stored on the database.
Note : we have to update the recievedlist and missinglist on subscriptionhistory for this subscription.

=back

=cut

sub NewIssue {
    my ( $serialseq, $subscriptionid, $biblionumber, $status, $planneddate, $publisheddate, $notes ) = @_;
    ### FIXME biblionumber CAN be provided by subscriptionid. So Do we STILL NEED IT ?

    my $dbh   = C4::Context->dbh;
    my $query = qq|
        INSERT INTO serial
            (serialseq,subscriptionid,biblionumber,status,publisheddate,planneddate,notes)
        VALUES (?,?,?,?,?,?,?)
    |;
    my $sth = $dbh->prepare($query);
    $sth->execute( $serialseq, $subscriptionid, $biblionumber, $status, $publisheddate, $planneddate, $notes );
    my $serialid = $dbh->{'mysql_insertid'};
    $query = qq|
        SELECT missinglist,recievedlist
        FROM   subscriptionhistory
        WHERE  subscriptionid=?
    |;
    $sth = $dbh->prepare($query);
    $sth->execute($subscriptionid);
    my ( $missinglist, $recievedlist ) = $sth->fetchrow;

    if ( $status eq 2 ) {
        ### TODO Add a feature that improves recognition and description.
        ### As such count (serialseq) i.e. : N18,2(N19),N20
        ### Would use substr and index But be careful to previous presence of ()
        $recievedlist .= "; $serialseq" unless ( index( $recievedlist, $serialseq ) > 0 );
    }
    if ( $status eq 4 ) {
        $missinglist .= "; $serialseq" unless ( index( $missinglist, $serialseq ) > 0 );
    }
    $query = qq|
        UPDATE subscriptionhistory
        SET    recievedlist=?, missinglist=?
        WHERE  subscriptionid=?
    |;
    $sth = $dbh->prepare($query);
    $recievedlist =~ s/^; //;
    $missinglist  =~ s/^; //;
    $sth->execute( $recievedlist, $missinglist, $subscriptionid );
    return $serialid;
}

=head2 ItemizeSerials

=over 4

ItemizeSerials($serialid, $info);
$info is a hashref containing  barcode branch, itemcallnumber, status, location
$serialid the serialid
return :
1 if the itemize is a succes.
0 and @error else. @error containts the list of errors found.

=back

=cut

sub ItemizeSerials {
    my ( $serialid, $info ) = @_;
    my $now = POSIX::strftime( "%Y-%m-%d", localtime );

    my $dbh   = C4::Context->dbh;
    my $query = qq|
        SELECT *
        FROM   serial
        WHERE  serialid=?
    |;
    my $sth = $dbh->prepare($query);
    $sth->execute($serialid);
    my $data = $sth->fetchrow_hashref;
    if ( C4::Context->preference("RoutingSerials") ) {

        # check for existing biblioitem relating to serial issue
        my ( $count, @results ) = GetBiblioItemByBiblioNumber( $data->{'biblionumber'} );
        my $bibitemno = 0;
        for ( my $i = 0 ; $i < $count ; $i++ ) {
            if ( $results[$i]->{'volumeddesc'} eq $data->{'serialseq'} . ' (' . $data->{'planneddate'} . ')' ) {
                $bibitemno = $results[$i]->{'biblioitemnumber'};
                last;
            }
        }
        if ( $bibitemno == 0 ) {
            my $sth = $dbh->prepare( "SELECT * FROM biblioitems WHERE biblionumber = ? ORDER BY biblioitemnumber DESC" );
            $sth->execute( $data->{'biblionumber'} );
            my $biblioitem = $sth->fetchrow_hashref;
            $biblioitem->{'volumedate'}  = $data->{planneddate};
            $biblioitem->{'volumeddesc'} = $data->{serialseq} . ' (' . format_date( $data->{'planneddate'} ) . ')';
            $biblioitem->{'dewey'}       = $info->{itemcallnumber};
        }
    }

    my $fwk = GetFrameworkCode( $data->{'biblionumber'} );
    if ( $info->{barcode} ) {
        my @errors;
        my $exists = itemdata( $info->{'barcode'} );
        push @errors, "barcode_not_unique" if ($exists);
        unless ($exists) {
            my $marcrecord = MARC::Record->new();
            my ( $tag, $subfield ) = GetMarcFromKohaField( "items.barcode", $fwk );
            my $newField = MARC::Field->new( "$tag", '', '', "$subfield" => $info->{barcode} );
            $marcrecord->insert_fields_ordered($newField);
            if ( $info->{branch} ) {
                my ( $tag, $subfield ) = GetMarcFromKohaField( "items.homebranch", $fwk );

                #warn "items.homebranch : $tag , $subfield";
                if ( $marcrecord->field($tag) ) {
                    $marcrecord->field($tag)->add_subfields( "$subfield" => $info->{branch} );
                } else {
                    my $newField = MARC::Field->new( "$tag", '', '', "$subfield" => $info->{branch} );
                    $marcrecord->insert_fields_ordered($newField);
                }
                ( $tag, $subfield ) = GetMarcFromKohaField( "items.holdingbranch", $fwk );

                #warn "items.holdingbranch : $tag , $subfield";
                if ( $marcrecord->field($tag) ) {
                    $marcrecord->field($tag)->add_subfields( "$subfield" => $info->{branch} );
                } else {
                    my $newField = MARC::Field->new( "$tag", '', '', "$subfield" => $info->{branch} );
                    $marcrecord->insert_fields_ordered($newField);
                }
            }
            if ( $info->{itemcallnumber} ) {
                my ( $tag, $subfield ) = GetMarcFromKohaField( "items.itemcallnumber", $fwk );

                if ( $marcrecord->field($tag) ) {
                    $marcrecord->field($tag)->add_subfields( "$subfield" => $info->{itemcallnumber} );
                } else {
                    my $newField = MARC::Field->new( "$tag", '', '', "$subfield" => $info->{itemcallnumber} );
                    $marcrecord->insert_fields_ordered($newField);
                }
            }
            if ( $info->{notes} ) {
                my ( $tag, $subfield ) = GetMarcFromKohaField( "items.itemnotes", $fwk );

                if ( $marcrecord->field($tag) ) {
                    $marcrecord->field($tag)->add_subfields( "$subfield" => $info->{notes} );
                } else {
                    my $newField = MARC::Field->new( "$tag", '', '', "$subfield" => $info->{notes} );
                    $marcrecord->insert_fields_ordered($newField);
                }
            }
            if ( $info->{location} ) {
                my ( $tag, $subfield ) = GetMarcFromKohaField( "items.location", $fwk );

                if ( $marcrecord->field($tag) ) {
                    $marcrecord->field($tag)->add_subfields( "$subfield" => $info->{location} );
                } else {
                    my $newField = MARC::Field->new( "$tag", '', '', "$subfield" => $info->{location} );
                    $marcrecord->insert_fields_ordered($newField);
                }
            }
            if ( $info->{status} ) {
                my ( $tag, $subfield ) = GetMarcFromKohaField( "items.notforloan", $fwk );

                if ( $marcrecord->field($tag) ) {
                    $marcrecord->field($tag)->add_subfields( "$subfield" => $info->{status} );
                } else {
                    my $newField = MARC::Field->new( "$tag", '', '', "$subfield" => $info->{status} );
                    $marcrecord->insert_fields_ordered($newField);
                }
            }
            if ( C4::Context->preference("RoutingSerials") ) {
                my ( $tag, $subfield ) = GetMarcFromKohaField( "items.dateaccessioned", $fwk );
                if ( $marcrecord->field($tag) ) {
                    $marcrecord->field($tag)->add_subfields( "$subfield" => $now );
                } else {
                    my $newField = MARC::Field->new( "$tag", '', '', "$subfield" => $now );
                    $marcrecord->insert_fields_ordered($newField);
                }
            }
            AddItemFromMarc( $marcrecord, $data->{'biblionumber'} );
            return 1;
        }
        return ( 0, @errors );
    }
}

=head2 HasSubscriptionStrictlyExpired

=over 4

1 or 0 = HasSubscriptionStrictlyExpired($subscriptionid)

the subscription has stricly expired when today > the end subscription date 

return :
1 if true, 0 if false, -1 if the expiration date is not set.

=back

=cut

sub HasSubscriptionStrictlyExpired {

    # Getting end of subscription date
    my ($subscriptionid) = @_;
    my $dbh              = C4::Context->dbh;
    my $subscription     = GetSubscription($subscriptionid);
    my $expirationdate = $subscription->{enddate} || GetExpirationDate($subscriptionid);

    # If the expiration date is set
    if ( $expirationdate != 0 ) {
        my ( $endyear, $endmonth, $endday ) = split( '-', $expirationdate );

        # Getting today's date
        my ( $nowyear, $nowmonth, $nowday ) = Today();

        # if today's date > expiration date, then the subscription has stricly expired
        if ( Delta_Days( $nowyear, $nowmonth, $nowday, $endyear, $endmonth, $endday ) < 0 ) {
            return 1;
        } else {
            return 0;
        }
    } else {

        # There are some cases where the expiration date is not set
        # As we can't determine if the subscription has expired on a date-basis,
        # we return -1;
        return -1;
    }
}

=head2 HasSubscriptionExpired

=over 4

$has_expired = HasSubscriptionExpired($subscriptionid)

the subscription has expired when the next issue to arrive is out of subscription limit.

return :
0 if the subscription has not expired
1 if the subscription has expired
2 if has subscription does not have a valid expiration date set

=back

=cut

sub HasSubscriptionExpired {
    my ($subscriptionid) = @_;
    my $dbh              = C4::Context->dbh;
    my $subscription     = GetSubscription($subscriptionid);
    if ( ( $subscription->{periodicity} % 16 ) > 0 ) {
        my $expirationdate = $subscription->{enddate};
        my $query          = qq|
            SELECT max(planneddate)
            FROM   serial
            WHERE  subscriptionid=?
      |;
        my $sth = $dbh->prepare($query);
        $sth->execute($subscriptionid);
        my ($res) = $sth->fetchrow;
        return 0 unless $res;
        my @res                   = split( /-/, $res );
        my @endofsubscriptiondate = split( /-/, $expirationdate );
        return 2 if ( scalar(@res) != 3 || scalar(@endofsubscriptiondate) != 3 || not check_date(@res) || not check_date(@endofsubscriptiondate) );
        return 1
          if ( ( @endofsubscriptiondate && Delta_Days( $res[0], $res[1], $res[2], $endofsubscriptiondate[0], $endofsubscriptiondate[1], $endofsubscriptiondate[2] ) <= 0 )
            || ( !$res ) );
        return 0;
    } else {
        if ( $subscription->{'numberlength'} ) {
            my $countreceived = countissuesfrom( $subscriptionid, $subscription->{'startdate'} );
            return 1 if ( $countreceived > $subscription->{'numberlength'} );
            return 0;
        } else {
            return 0;
        }
    }
    return 0;    # Notice that you'll never get here.
}

=head2 SetDistributedto

=over 4

SetDistributedto($distributedto,$subscriptionid);
This function update the value of distributedto for a subscription given on input arg.

=back

=cut

sub SetDistributedto {
    my ( $distributedto, $subscriptionid ) = @_;
    my $dbh   = C4::Context->dbh;
    my $query = qq|
        UPDATE subscription
        SET    distributedto=?
        WHERE  subscriptionid=?
    |;
    my $sth = $dbh->prepare($query);
    $sth->execute( $distributedto, $subscriptionid );
}

=head2 DelSubscription

=over 4

DelSubscription($subscriptionid)
this function delete the subscription which has $subscriptionid as id.

=back

=cut

sub DelSubscription {
    my ($subscriptionid) = @_;
    my $dbh = C4::Context->dbh;
    $subscriptionid = $dbh->quote($subscriptionid);
    $dbh->do("DELETE FROM subscription WHERE subscriptionid=$subscriptionid");
    $dbh->do("DELETE FROM subscriptionhistory WHERE subscriptionid=$subscriptionid");
    $dbh->do("DELETE FROM serial WHERE subscriptionid=$subscriptionid");

    logaction( "SERIAL", "DELETE", $subscriptionid, "" ) if C4::Context->preference("SubscriptionLog");
}

=head2 DelIssue

=over 4

DelIssue($serialseq,$subscriptionid)
this function delete an issue which has $serialseq and $subscriptionid given on input arg.

=back

=cut

sub DelIssue {
    my ($dataissue) = @_;
    my $dbh = C4::Context->dbh;
    ### TODO Add itemdeletion. Would need to get itemnumbers. Should be in a pref ?

    my $query = qq|
        DELETE FROM serial
        WHERE       serialid= ?
        AND         subscriptionid= ?
    |;
    my $mainsth = $dbh->prepare($query);
    $mainsth->execute( $dataissue->{'serialid'}, $dataissue->{'subscriptionid'} );

    #Delete element from subscription history
    $query = "SELECT * FROM   subscription WHERE  subscriptionid = ?";
    my $sth = $dbh->prepare($query);
    $sth->execute( $dataissue->{'subscriptionid'} );
    my $val = $sth->fetchrow_hashref;
    unless ( $val->{manualhistory} ) {
        my $query = qq|
          SELECT * FROM subscriptionhistory
          WHERE       subscriptionid= ?
      |;
        my $sth = $dbh->prepare($query);
        $sth->execute( $dataissue->{'subscriptionid'} );
        my $data      = $sth->fetchrow_hashref;
        my $serialseq = $dataissue->{'serialseq'};
        $data->{'missinglist'}  =~ s/\b$serialseq\b//;
        $data->{'recievedlist'} =~ s/\b$serialseq\b//;
        my $strsth = "UPDATE subscriptionhistory SET " . join( ",", map { join( "=", $_, $dbh->quote( $data->{$_} ) ) } keys %$data ) . " WHERE subscriptionid=?";
        $sth = $dbh->prepare($strsth);
        $sth->execute( $dataissue->{'subscriptionid'} );
    }

    return $mainsth->rows;
}

=head2 GetLateOrMissingIssues

=over 4

($count,@issuelist) = &GetLateMissingIssues($supplierid,$serialid)

this function select missing issues on database - where serial.status = 4 or serial.status=3 or planneddate<now

return :
a count of the number of missing issues
the issuelist into a table. Each line of this table containts a ref to a hash which it containts
name,title,planneddate,serialseq,serial.subscriptionid from tables : subscription, serial & biblio

=back

=cut

sub GetLateOrMissingIssues {
    my ( $supplierid, $serialid, $order ) = @_;
    my $dbh = C4::Context->dbh;
    my $sth;
    my $byserial = '';
    if ($serialid) {
        $byserial = "and serialid = " . $serialid;
    }
    if ($order) {
        $order .= ", title";
    } else {
        $order = "title";
    }
    if ($supplierid) {
        $sth = $dbh->prepare(
            "SELECT
                serialid,      aqbooksellerid,        name,
                biblio.title,  planneddate,           serialseq,
                serial.status, serial.subscriptionid, claimdate
            FROM      serial 
                LEFT JOIN subscription  ON serial.subscriptionid=subscription.subscriptionid 
                LEFT JOIN biblio        ON subscription.biblionumber=biblio.biblionumber
                LEFT JOIN aqbooksellers ON subscription.aqbooksellerid = aqbooksellers.id
                WHERE subscription.subscriptionid = serial.subscriptionid 
                AND (serial.STATUS = 4 OR ((planneddate < now() AND serial.STATUS =1) OR serial.STATUS = 3 OR serial.STATUS = 7))
                AND subscription.aqbooksellerid=$supplierid
                $byserial
                ORDER BY $order"
        );
    } else {
        $sth = $dbh->prepare(
            "SELECT 
            serialid,      aqbooksellerid,         name,
            biblio.title,  planneddate,           serialseq,
            serial.status, serial.subscriptionid, claimdate
            FROM serial 
                LEFT JOIN subscription ON serial.subscriptionid=subscription.subscriptionid 
                LEFT JOIN biblio ON subscription.biblionumber=biblio.biblionumber
                LEFT JOIN aqbooksellers ON subscription.aqbooksellerid = aqbooksellers.id
                WHERE subscription.subscriptionid = serial.subscriptionid 
                        AND (serial.STATUS = 4 OR ((planneddate < now() AND serial.STATUS =1) OR serial.STATUS = 3 OR serial.STATUS = 7))
                $byserial
                ORDER BY $order"
        );
    }
    $sth->execute;
    my @issuelist;
    my $last_title;
    my $odd   = 0;
    my $count = 0;
    while ( my $line = $sth->fetchrow_hashref ) {
        $odd++ unless $line->{title} eq $last_title;
        $last_title = $line->{title} if ( $line->{title} );
        $line->{planneddate}                  = format_date( $line->{planneddate} );
        $line->{claimdate}                    = format_date( $line->{claimdate} );
        $line->{ "status" . $line->{status} } = 1;
        $line->{'odd'} = 1 if $odd % 2;
        $count++;
        push @issuelist, $line;
    }
    return $count, @issuelist;
}

=head2 removeMissingIssue

=over 4

removeMissingIssue($subscriptionid)

this function removes an issue from being part of the missing string in 
subscriptionlist.missinglist column

called when a missing issue is found from the serials-recieve.pl file

=back

=cut

sub removeMissingIssue {
    my ( $sequence, $subscriptionid ) = @_;
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare("SELECT * FROM subscriptionhistory WHERE subscriptionid = ?");
    $sth->execute($subscriptionid);
    my $data              = $sth->fetchrow_hashref;
    my $missinglist       = $data->{'missinglist'};
    my $missinglistbefore = $missinglist;

    # warn $missinglist." before";
    $missinglist =~ s/($sequence)//;

    # warn $missinglist." after";
    if ( $missinglist ne $missinglistbefore ) {
        $missinglist =~ s/\|\s\|/\|/g;
        $missinglist =~ s/^\| //g;
        $missinglist =~ s/\|$//g;
        my $sth2 = $dbh->prepare(
            "UPDATE subscriptionhistory
                    SET missinglist = ?
                    WHERE subscriptionid = ?"
        );
        $sth2->execute( $missinglist, $subscriptionid );
    }
}

=head2 updateClaim

=over 4

&updateClaim($serialid)

this function updates the time when a claim is issued for late/missing items

called from claims.pl file

=back

=cut

sub updateClaim {
    my ($serialid) = @_;
    my $dbh        = C4::Context->dbh;
    my $sth        = $dbh->prepare(
        "UPDATE serial SET claimdate = now()
                WHERE serialid = ?
        "
    );
    $sth->execute($serialid);
}

=head2 getsupplierbyserialid

=over 4

($result) = &getsupplierbyserialid($serialid)

this function is used to find the supplier id given a serial id

return :
hashref containing serialid, subscriptionid, and aqbooksellerid

=back

=cut

sub getsupplierbyserialid {
    my ($serialid) = @_;
    my $dbh        = C4::Context->dbh;
    my $sth        = $dbh->prepare(
        "SELECT serialid, serial.subscriptionid, aqbooksellerid
         FROM serial 
            LEFT JOIN subscription ON serial.subscriptionid = subscription.subscriptionid
            WHERE serialid = ?
        "
    );
    $sth->execute($serialid);
    my $line   = $sth->fetchrow_hashref;
    my $result = $line->{'aqbooksellerid'};
    return $result;
}

=head2 check_routing

=over 4

($result) = &check_routing($subscriptionid)

this function checks to see if a serial has a routing list and returns the count of routingid
used to show either an 'add' or 'edit' link

=back

=cut

sub check_routing {
    my ($subscriptionid) = @_;
    my $dbh              = C4::Context->dbh;
    my $sth              = $dbh->prepare(
        "SELECT count(routingid) routingids FROM subscription LEFT JOIN subscriptionroutinglist 
                              ON subscription.subscriptionid = subscriptionroutinglist.subscriptionid
                              WHERE subscription.subscriptionid = ? ORDER BY ranking ASC
                              "
    );
    $sth->execute($subscriptionid);
    my $line   = $sth->fetchrow_hashref;
    my $result = $line->{'routingids'};
    return $result;
}

=head2 addroutingmember

=over 4

&addroutingmember($borrowernumber,$subscriptionid)

this function takes a borrowernumber and subscriptionid and add the member to the
routing list for that serial subscription and gives them a rank on the list
of either 1 or highest current rank + 1

=back

=cut

sub addroutingmember {
    my ( $borrowernumber, $subscriptionid ) = @_;
    my $rank;
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare( "SELECT max(ranking) rank FROM subscriptionroutinglist WHERE subscriptionid = ?" );
    $sth->execute($subscriptionid);
    while ( my $line = $sth->fetchrow_hashref ) {
        if ( $line->{'rank'} > 0 ) {
            $rank = $line->{'rank'} + 1;
        } else {
            $rank = 1;
        }
    }
    $sth = $dbh->prepare( "INSERT INTO subscriptionroutinglist (subscriptionid,borrowernumber,ranking) VALUES (?,?,?)" );
    $sth->execute( $subscriptionid, $borrowernumber, $rank );
}

=head2 reorder_members

=over 4

&reorder_members($subscriptionid,$routingid,$rank)

this function is used to reorder the routing list

it takes the routingid of the member one wants to re-rank and the rank it is to move to
- it gets all members on list puts their routingid's into an array
- removes the one in the array that is $routingid
- then reinjects $routingid at point indicated by $rank
- then update the database with the routingids in the new order

=back

=cut

sub reorder_members {
    my ( $subscriptionid, $routingid, $rank ) = @_;
    my $dbh = C4::Context->dbh;
    my $sth = $dbh->prepare( "SELECT * FROM subscriptionroutinglist WHERE subscriptionid = ? ORDER BY ranking ASC" );
    $sth->execute($subscriptionid);
    my @result;
    while ( my $line = $sth->fetchrow_hashref ) {
        push( @result, $line->{'routingid'} );
    }

    # To find the matching index
    my $i;
    my $key = -1;    # to allow for 0 being a valid response
    for ( $i = 0 ; $i < @result ; $i++ ) {
        if ( $routingid == $result[$i] ) {
            $key = $i;    # save the index
            last;
        }
    }

    # if index exists in array then move it to new position
    if ( $key > -1 && $rank > 0 ) {
        my $new_rank = $rank - 1;                       # $new_rank is what you want the new index to be in the array
        my $moving_item = splice( @result, $key, 1 );
        splice( @result, $new_rank, 0, $moving_item );
    }
    for ( my $j = 0 ; $j < @result ; $j++ ) {
        my $sth = $dbh->prepare( "UPDATE subscriptionroutinglist SET ranking = '" . ( $j + 1 ) . "' WHERE routingid = '" . $result[$j] . "'" );
        $sth->execute;
    }
}

=head2 delroutingmember

=over 4

&delroutingmember($routingid,$subscriptionid)

this function either deletes one member from routing list if $routingid exists otherwise
deletes all members from the routing list

=back

=cut

sub delroutingmember {

    # if $routingid exists then deletes that row otherwise deletes all with $subscriptionid
    my ( $routingid, $subscriptionid ) = @_;
    my $dbh = C4::Context->dbh;
    if ($routingid) {
        my $sth = $dbh->prepare("DELETE FROM subscriptionroutinglist WHERE routingid = ?");
        $sth->execute($routingid);
        reorder_members( $subscriptionid, $routingid );
    } else {
        my $sth = $dbh->prepare("DELETE FROM subscriptionroutinglist WHERE subscriptionid = ?");
        $sth->execute($subscriptionid);
    }
}

=head2 getroutinglist

=over 4

($count,@routinglist) = &getroutinglist($subscriptionid)

this gets the info from the subscriptionroutinglist for $subscriptionid

return :
a count of the number of members on routinglist
the routinglist into a table. Each line of this table containts a ref to a hash which containts
routingid - a unique id, borrowernumber, ranking, and biblionumber of subscription

=back

=cut

sub getroutinglist {
    my ($subscriptionid) = @_;
    my $dbh              = C4::Context->dbh;
    my $sth              = $dbh->prepare(
        "SELECT routingid, borrowernumber, ranking, biblionumber 
            FROM subscription 
            LEFT JOIN subscriptionroutinglist ON subscription.subscriptionid = subscriptionroutinglist.subscriptionid
            WHERE subscription.subscriptionid = ? ORDER BY ranking ASC
                              "
    );
    $sth->execute($subscriptionid);
    my @routinglist;
    my $count = 0;
    while ( my $line = $sth->fetchrow_hashref ) {
        $count++;
        push( @routinglist, $line );
    }
    return ( $count, @routinglist );
}

=head2 countissuesfrom

=over 4

$result = &countissuesfrom($subscriptionid,$startdate)


=back

=cut

sub countissuesfrom {
    my ( $subscriptionid, $startdate ) = @_;
    my $dbh   = C4::Context->dbh;
    my $query = qq|
            SELECT count(*)
            FROM   serial
            WHERE  subscriptionid=?
            AND serial.publisheddate>?
        |;
    my $sth = $dbh->prepare($query);
    $sth->execute( $subscriptionid, $startdate );
    my ($countreceived) = $sth->fetchrow;
    return $countreceived;
}

=head2 CountIssues

=over 4

$result = &CountIssues($subscriptionid)


=back

=cut

sub CountIssues {
    my ($subscriptionid) = @_;
    my $dbh              = C4::Context->dbh;
    my $query            = qq|
            SELECT count(*)
            FROM   serial
            WHERE  subscriptionid=?
        |;
    my $sth = $dbh->prepare($query);
    $sth->execute($subscriptionid);
    my ($countreceived) = $sth->fetchrow;
    return $countreceived;
}

=head2 HasItems

=over 4

$result = &HasItems($subscriptionid)


=back

=cut

sub HasItems {
    my ($subscriptionid) = @_;
    my $dbh              = C4::Context->dbh;
    my $query = qq|
            SELECT COUNT(serialitems.itemnumber)
            FROM   serial 
			LEFT JOIN serialitems USING(serialid)
            WHERE  subscriptionid=? AND serialitems.serialid NOT NULL
        |;
    my $sth=$dbh->prepare($query);
    $sth->execute($subscriptionid);
    my ($countitems)=$sth->fetchrow;
    return $countitems;  
}

=head2 abouttoexpire

=over 4

$result = &abouttoexpire($subscriptionid)

this function alerts you to the penultimate issue for a serial subscription

returns 1 - if this is the penultimate issue
returns 0 - if not

=back

=cut

sub abouttoexpire {
    my ($subscriptionid) = @_;
    my $dbh              = C4::Context->dbh;
    my $subscription     = GetSubscription($subscriptionid);
    my $per              = $subscription->{'periodicity'};
    if ( $per % 16 > 0 ) {
        my $expirationdate = $subscription->{enddate};
        my $sth            = $dbh->prepare("select max(planneddate) from serial where subscriptionid=?");
        $sth->execute($subscriptionid);
        my ($res) = $sth->fetchrow;
        my @res = split( /-/, $res );
        @res = Date::Calc::Today if ( $res[0] * $res[1] == 0 );
        my @endofsubscriptiondate = split( /-/, $expirationdate );
        my $x;
        if ( $per == 1 ) { $x = 7; }
        if ( $per == 2 ) { $x = 7; }
        if ( $per == 3 ) { $x = 14; }
        if ( $per == 4 ) { $x = 21; }
        if ( $per == 5 ) { $x = 31; }
        if ( $per == 6 ) { $x = 62; }
        if ( $per == 7 || $per == 8 ) { $x = 93; }
        if ( $per == 9 )  { $x = 190; }
        if ( $per == 10 ) { $x = 365; }
        if ( $per == 11 ) { $x = 730; }
        my @datebeforeend = Add_Delta_Days( $endofsubscriptiondate[0], $endofsubscriptiondate[1], $endofsubscriptiondate[2], -( 3 * $x ) )
          if ( @endofsubscriptiondate && $endofsubscriptiondate[0] * $endofsubscriptiondate[1] * $endofsubscriptiondate[2] );

        # warn "DATE BEFORE END: $datebeforeend";
        return 1
          if (
            @res
            && ( @datebeforeend
                && Delta_Days( $res[0], $res[1], $res[2], $datebeforeend[0], $datebeforeend[1], $datebeforeend[2] ) <= 0 )
            && ( @endofsubscriptiondate
                && Delta_Days( $res[0], $res[1], $res[2], $endofsubscriptiondate[0], $endofsubscriptiondate[1], $endofsubscriptiondate[2] ) >= 0 )
          );
        return 0;
    } elsif ( $subscription->{numberlength} > 0 ) {
        return ( countissuesfrom( $subscriptionid, $subscription->{'startdate'} ) >= $subscription->{numberlength} - 1 );
    } else {
        return 0;
    }
}

=head2 GetNextDate

($resultdate) = &GetNextDate($planneddate,$subscription)

this function is an extension of GetNextDate which allows for checking for irregularity

it takes the planneddate and will return the next issue's date and will skip dates if there
exists an irregularity
- eg if periodicity is monthly and $planneddate is 2007-02-10 but if March and April is to be 
skipped then the returned date will be 2007-05-10

return :
$resultdate - then next date in the sequence

Return 0 if periodicity==0

=cut

sub in_array {    # used in next sub down
    my ( $val, @elements ) = @_;
    foreach my $elem (@elements) {
        if ( $val == $elem ) {
            return 1;
        }
    }
    return 0;
}

sub GetNextDate(@) {
    my ( $planneddate, $subscription ) = @_;
    my @irreg = split( /\,/, $subscription->{irregularity} );

    #date supposed to be in ISO.

    my ( $year, $month, $day ) = split( /-/, $planneddate );
    $month = 1 unless ($month);
    $day   = 1 unless ($day);
    my @resultdate;

    #       warn "DOW $dayofweek";
    if ( $subscription->{periodicity} % 16 == 0 ) {    # 'without regularity' || 'irregular'
        return 0;
    }

    #   daily : n / week
    #   Since we're interpreting irregularity here as which days of the week to skip an issue,
    #   renaming this pattern from 1/day to " n / week ".
    if ( $subscription->{periodicity} == 1 ) {
        my $dayofweek = eval { Day_of_Week( $year, $month, $day ) };
        if ($@) { warn "year month day : $year $month $day $subscription->{subscriptionid} : $@"; }
        else {
            for ( my $i = 0 ; $i < @irreg ; $i++ ) {
                $dayofweek = 0 if ( $dayofweek == 7 );
                if ( in_array( ( $dayofweek + 1 ), @irreg ) ) {
                    ( $year, $month, $day ) = Add_Delta_Days( $year, $month, $day, 1 );
                    $dayofweek++;
                }
            }
            @resultdate = Add_Delta_Days( $year, $month, $day, 1 );
        }
    }

    #   1  week
    if ( $subscription->{periodicity} == 2 ) {
        my ( $wkno, $year ) = eval { Week_of_Year( $year, $month, $day ) };
        if ($@) { warn "year month day : $year $month $day $subscription->{subscriptionid} : $@"; }
        else {
            for ( my $i = 0 ; $i < @irreg ; $i++ ) {

                #FIXME: if two consecutive irreg, do we only skip one?
                if ( $irreg[$i] == ( ( $wkno != 51 ) ? ( $wkno + 1 ) % 52 : 52 ) ) {
                    ( $year, $month, $day ) = Add_Delta_Days( $year, $month, $day, 7 );
                    $wkno = ( ( $wkno != 51 ) ? ( $wkno + 1 ) % 52 : 52 );
                }
            }
            @resultdate = Add_Delta_Days( $year, $month, $day, 7 );
        }
    }

    #   1 / 2 weeks
    if ( $subscription->{periodicity} == 3 ) {
        my ( $wkno, $year ) = eval { Week_of_Year( $year, $month, $day ) };
        if ($@) { warn "year month day : $year $month $day $subscription->{subscriptionid} : $@"; }
        else {
            for ( my $i = 0 ; $i < @irreg ; $i++ ) {
                if ( $irreg[$i] == ( ( $wkno != 50 ) ? ( $wkno + 2 ) % 52 : 52 ) ) {
                    ### BUGFIX was previously +1 ^
                    ( $year, $month, $day ) = Add_Delta_Days( $year, $month, $day, 14 );
                    $wkno = ( ( $wkno != 50 ) ? ( $wkno + 2 ) % 52 : 52 );
                }
            }
            @resultdate = Add_Delta_Days( $year, $month, $day, 14 );
        }
    }

    #   1 / 3 weeks
    if ( $subscription->{periodicity} == 4 ) {
        my ( $wkno, $year ) = eval { Week_of_Year( $year, $month, $day ) };
        if ($@) { warn "annÃ©e mois jour : $year $month $day $subscription->{subscriptionid} : $@"; }
        else {
            for ( my $i = 0 ; $i < @irreg ; $i++ ) {
                if ( $irreg[$i] == ( ( $wkno != 49 ) ? ( $wkno + 3 ) % 52 : 52 ) ) {
                    ( $year, $month, $day ) = Add_Delta_Days( $year, $month, $day, 21 );
                    $wkno = ( ( $wkno != 49 ) ? ( $wkno + 3 ) % 52 : 52 );
                }
            }
            @resultdate = Add_Delta_Days( $year, $month, $day, 21 );
        }
    }
    my $tmpmonth = $month;
    if ( $year && $month && $day ) {
        if ( $subscription->{periodicity} == 5 ) {
            for ( my $i = 0 ; $i < @irreg ; $i++ ) {
                if ( $irreg[$i] == ( ( $tmpmonth != 11 ) ? ( $tmpmonth + 1 ) % 12 : 12 ) ) {
                    ( $year, $month, $day ) = Add_Delta_YMD( $year, $month, $day, 0, 1, 0 );
                    $tmpmonth = ( ( $tmpmonth != 11 ) ? ( $tmpmonth + 1 ) % 12 : 12 );
                }
            }
            @resultdate = Add_Delta_YMD( $year, $month, $day, 0, 1, 0 );
        }
        if ( $subscription->{periodicity} == 6 ) {
            for ( my $i = 0 ; $i < @irreg ; $i++ ) {
                if ( $irreg[$i] == ( ( $tmpmonth != 10 ) ? ( $tmpmonth + 2 ) % 12 : 12 ) ) {
                    ( $year, $month, $day ) = Add_Delta_YMD( $year, $month, $day, 0, 2, 0 );
                    $tmpmonth = ( ( $tmpmonth != 10 ) ? ( $tmpmonth + 2 ) % 12 : 12 );
                }
            }
            @resultdate = Add_Delta_YMD( $year, $month, $day, 0, 2, 0 );
        }
        if ( $subscription->{periodicity} == 7 ) {
            for ( my $i = 0 ; $i < @irreg ; $i++ ) {
                if ( $irreg[$i] == ( ( $tmpmonth != 9 ) ? ( $tmpmonth + 3 ) % 12 : 12 ) ) {
                    ( $year, $month, $day ) = Add_Delta_YMD( $year, $month, $day, 0, 3, 0 );
                    $tmpmonth = ( ( $tmpmonth != 9 ) ? ( $tmpmonth + 3 ) % 12 : 12 );
                }
            }
            @resultdate = Add_Delta_YMD( $year, $month, $day, 0, 3, 0 );
        }
        if ( $subscription->{periodicity} == 8 ) {
            for ( my $i = 0 ; $i < @irreg ; $i++ ) {
                if ( $irreg[$i] == ( ( $tmpmonth != 9 ) ? ( $tmpmonth + 3 ) % 12 : 12 ) ) {
                    ( $year, $month, $day ) = Add_Delta_YMD( $year, $month, $day, 0, 3, 0 );
                    $tmpmonth = ( ( $tmpmonth != 9 ) ? ( $tmpmonth + 3 ) % 12 : 12 );
                }
            }
            @resultdate = Add_Delta_YMD( $year, $month, $day, 0, 3, 0 );
        }
        if ( $subscription->{periodicity} == 9 ) {
            for ( my $i = 0 ; $i < @irreg ; $i++ ) {
                if ( $irreg[$i] == ( ( $tmpmonth != 9 ) ? ( $tmpmonth + 3 ) % 12 : 12 ) ) {
                    ### BUFIX Seems to need more Than One ?
                    ( $year, $month, $day ) = Add_Delta_YM( $year, $month, $day, 0, 6 );
                    $tmpmonth = ( ( $tmpmonth != 6 ) ? ( $tmpmonth + 6 ) % 12 : 12 );
                }
            }
            @resultdate = Add_Delta_YM( $year, $month, $day, 0, 6 );
        }
        if ( $subscription->{periodicity} == 10 ) {
            @resultdate = Add_Delta_YM( $year, $month, $day, 1, 0 );
        }
        if ( $subscription->{periodicity} == 11 ) {
            @resultdate = Add_Delta_YM( $year, $month, $day, 2, 0 );
        }
    }
    my $resultdate = sprintf( "%04d-%02d-%02d", $resultdate[0], $resultdate[1], $resultdate[2] );

    return "$resultdate";
}

=head2 itemdata

  $item = &itemdata($barcode);

Looks up the item with the given barcode, and returns a
reference-to-hash containing information about that item. The keys of
the hash are the fields from the C<items> and C<biblioitems> tables in
the Koha database.

=cut

#'
sub itemdata {
    my ($barcode) = @_;
    my $dbh       = C4::Context->dbh;
    my $sth       = $dbh->prepare(
        "Select * from items LEFT JOIN biblioitems ON items.biblioitemnumber=biblioitems.biblioitemnumber 
        WHERE barcode=?"
    );
    $sth->execute($barcode);
    my $data = $sth->fetchrow_hashref;
    $sth->finish;
    return ($data);
}

1;
__END__

=head1 AUTHOR

Koha Developement team <info@koha.org>

=cut
