package C4::AuthoritiesMarc;
# 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 C4::Context;
use C4::Koha;
use MARC::Record;
use C4::Biblio;
use C4::Search;
#use ZOOM;
use vars qw($VERSION @ISA @EXPORT);

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

@ISA = qw(Exporter);
@EXPORT = qw(
    &AUTHgettagslib
    &AUTHfindsubfield
    &AUTHfind_authtypecode

    &AUTHaddauthority
    &AUTHmodauthority
    &AUTHdelauthority
    &AUTHaddsubfield
    &AUTHgetauthority
    &AUTHfind_marc_from_kohafield
    &AUTHgetauth_type
    &AUTHcount_usage
    &getsummary
    &authoritysearch
    &XMLgetauthority
    
    &AUTHhtml2marc
    &BuildUnimarcHierarchies
    &BuildUnimarcHierarchy
    &merge
    &FindDuplicate
 );

sub AUTHfind_marc_from_kohafield {
  my ( $kohafield,$authtypecode ) = @_;
  my $dbh=C4::Context->dbh;
  return 0, 0 unless $kohafield;
  $authtypecode="" unless $authtypecode;
  my $marcfromkohafield;
  my $sth = $dbh->prepare("select tagfield,tagsubfield from auth_subfield_structure where kohafield= ? and authtypecode=? ");
  $sth->execute($kohafield,$authtypecode);
  my ($tagfield,$tagsubfield) = $sth->fetchrow;
    
  return  ($tagfield,$tagsubfield);
}

sub authoritysearch {
  my ($tags, $and_or, $excluding, $operator, $value, $offset,$length,$authtypecode,$sortby) = @_;
  my $dbh=C4::Context->dbh;
  my $query;
  my $attr;
    # the marclist may contain "mainentry". In this case, search the tag_to_report, that depends on
    # the authtypecode. Then, search on $a of this tag_to_report
    # also store main entry MARC tag, to extract it at end of search
  my $mainentrytag;
  ##first set the authtype search and may be multiple authorities
  my $n=0;
  my @authtypecode;
  my @auths=split / /,$authtypecode ;
  foreach my  $auth (@auths){
    $query .=" \@attr 1=Authority/format-id \@attr 5=100 ".$auth; ##No truncation on authtype
    push @authtypecode ,$auth;
    $n++;
  }
  if ($n>1){
    $query= "\@or ".$query;
  }
  
  my $dosearch;
  my $and;
  my $q2;
  for(my $i = 0 ; $i <= $#{$value} ; $i++)
  {
    if (@$value[$i]){
    ##If mainentry search $a tag
        if (@$tags[$i] eq "mainmainentry") {
          $attr =" \@attr 1=Heading ";
        }elsif (@$tags[$i] eq "mainentry") {
          $attr =" \@attr 1=Heading-Entity ";
        }else{
          $attr =" \@attr 1=Any ";
        }
        if (@$operator[$i] eq 'is') {
            $attr.=" \@attr 4=1  \@attr 5=100 ";##Phrase, No truncation,all of subfield field must match
        }elsif (@$operator[$i] eq "="){
            $attr.=" \@attr 4=107 ";           #Number Exact match
        }elsif (@$operator[$i] eq "start"){
            $attr.=" \@attr 4=1 \@attr 5=1 ";#Phrase, Right truncated
        } else {
            $attr .=" \@attr 5=1  ";## Word list, right truncated, anywhere
        }
        $and .=" \@and " ;
        $attr =$attr."\"".@$value[$i]."\"";
        $q2 .=$attr;
    $dosearch=1;
    }#if value
  }
  ##Add how many queries generated
  $query= $and.$query.$q2;
  $query=' @or  @attr 7=1 @attr 1=Heading 0 @or  @attr 7=1 @attr 1=Heading-Entity 1'.$query if ($sortby eq "HeadingAsc");
  $query=' @or  @attr 7=2 @attr 1=Heading 0 @or  @attr 7=1 @attr 1=Heading-Entity 1'.$query if ($sortby eq "HeadingDsc");
  warn $query;
  
  $offset=0 unless $offset;
  my $counter = $offset;
  $length=10 unless $length;
  my @oAuth;
  my $i;
  $oAuth[0]=C4::Context->Zconn("authorityserver" , 1);
  my $Anewq= new ZOOM::Query::PQF($query,$oAuth[0]);
  # $Anewq->sortby("1=Heading i< 1=Heading-Entity i< ");
  # $Anewq->sortby("1=Heading i< 1=Heading-Entity i< ");
  my $oAResult;
  $oAResult= $oAuth[0]->search($Anewq) ; 
  while (($i = ZOOM::event(\@oAuth)) != 0) {
      my $ev = $oAuth[$i-1]->last_event();
  #    warn("Authority ", $i-1, ": event $ev (", ZOOM::event_str($ev), ")\n");
      last if $ev == ZOOM::Event::ZEND;
  }
  my($error, $errmsg, $addinfo, $diagset) = $oAuth[0]->error_x();
  if ($error) {
    warn  "oAuth error: $errmsg ($error) $addinfo $diagset\n";
    goto NOLUCK;
  }

  my $nbresults;
  $nbresults=$oAResult->size();
  my $nremains=$nbresults;    
  my @result = ();
  my @finalresult = ();

  if ($nbresults>0){

  ##Find authid and linkid fields
  ##we may be searching multiple authoritytypes.
  ## FIXME this assumes that all authid and linkid fields are the same for all authority types
  # my ($authidfield,$authidsubfield)=AUTHfind_marc_from_kohafield($dbh,"auth_header.authid",$authtypecode[0]);
  # my ($linkidfield,$linkidsubfield)=AUTHfind_marc_from_kohafield($dbh,"auth_header.linkid",$authtypecode[0]);
    while (($counter < $nbresults) && ($counter < ($offset + $length))) {
    
      ##Here we have to extract MARC record and $authid from ZEBRA AUTHORITIES
      my $rec=$oAResult->record($counter);
      my $marcdata=$rec->raw();
      my $authrecord;    
      my $linkid;
      my @linkids;    
      my $separator=C4::Context->preference('authoritysep');
      my $linksummary=" ".$separator;    
          
          $authrecord = MARC::File::USMARC::decode($marcdata);
              
      my $authid=$authrecord->field('001')->data(); 
      #     if ($authrecord->field($linkidfield)){
      # my @fields=$authrecord->field($linkidfield);
      # 
      # #     foreach my $field (@fields){
      # # #     $linkid=$field->subfield($linkidsubfield) ;
      # # #         if ($linkid){ ##There is a linked record add fields to produce summary
      # # # my $linktype=AUTHfind_authtypecode($dbh,$linkid);
      # # #         my $linkrecord=AUTHgetauthority($dbh,$linkid);
      # # #         $linksummary.="<br>&nbsp;&nbsp;&nbsp;&nbsp;<a href='detail.pl?authid=$linkid'>".getsummary($dbh,$linkrecord,$linkid,$linktype).".</a>".$separator;
      # # #         }
      # #      }
      #     }#
      
          my $summary=getsummary($authrecord,$authid,$authtypecode);
  #         $summary="<a href='detail.pl?authid=$authid'>".$summary.".</a>" if ($intranet);
  #         $summary="<a href='detail.pl?authid=$authid'>".$summary.".</a>" if ($intranet);
      #     if ($linkid && $linksummary ne " ".$separator){
      #         $summary="<b>".$summary."</b>".$linksummary;
      #     }
          my $query_auth_tag = "SELECT auth_tag_to_report FROM auth_types WHERE authtypecode=?";
          my $sth = $dbh->prepare($query_auth_tag);
          $sth->execute($authtypecode);
          my $auth_tag_to_report = $sth->fetchrow;
          my %newline;
          $newline{summary} = $summary;
          $newline{authid} = $authid;
      #     $newline{linkid} = $linkid;
      #      $newline{reported_tag} = $reported_tag;
      #     $newline{used} =0;
      #     $newline{biblio_fields} = $tags_using_authtype;
          $newline{even} = $counter % 2;
          $counter++;
          push @finalresult, \%newline;
    }## while counter
  ###
   for (my $z=0; $z<@finalresult; $z++){
        my  $count=AUTHcount_usage($finalresult[$z]{authid});
        $finalresult[$z]{used}=$count;
   }# all $z's

  }## if nbresult
NOLUCK:
# $oAResult->destroy();
# $oAuth[0]->destroy();

    return (\@finalresult, $nbresults);
}

sub AUTHcount_usage {
  my ($authid) = @_;
  ### try ZOOM search here
  my $oConnection=C4::Context->Zconn("biblioserver",1);
  my $query;
  $query= "an=".$authid;
  
  my $oResult = $oConnection->search(new ZOOM::Query::CCL2RPN( $query, $oConnection ));
  my $result;
  while ((my $i = ZOOM::event([ $oConnection ])) != 0) {
      my $ev = $oConnection->last_event();
      if ($ev == ZOOM::Event::ZEND) {
          $result = $oResult->size();
      }
  }
  return ($result);
}

sub AUTHfind_authtypecode {
  my ($authid) = @_;
  my $dbh=C4::Context->dbh;
  my $sth = $dbh->prepare("select authtypecode from auth_header where authid=?");
  $sth->execute($authid);
  my ($authtypecode) = $sth->fetchrow;
  return $authtypecode;
}
 
sub AUTHgettagslib {
  my ($forlibrarian,$authtypecode)= @_;
  my $dbh=C4::Context->dbh;
  $authtypecode="" unless $authtypecode;
  my $sth;
  my $libfield = ($forlibrarian eq 1)? 'liblibrarian' : 'libopac';


  # check that authority exists
  $sth=$dbh->prepare("select count(*) from auth_tag_structure where authtypecode=?");
  $sth->execute($authtypecode);
  my ($total) = $sth->fetchrow;
  $authtypecode="" unless ($total >0);
  $sth= $dbh->prepare(
"SELECT tagfield,liblibrarian,libopac,mandatory,repeatable 
 FROM auth_tag_structure 
 WHERE authtypecode=? 
 ORDER BY tagfield"
    );

  $sth->execute($authtypecode);
  my ( $liblibrarian, $libopac, $tag, $res, $tab, $mandatory, $repeatable );

  while ( ( $tag, $liblibrarian, $libopac, $mandatory, $repeatable ) = $sth->fetchrow ) {
        $res->{$tag}->{lib}        = ($forlibrarian or !$libopac)?$liblibrarian:$libopac;
        $res->{$tag}->{tab}        = " ";            # XXX
        $res->{$tag}->{mandatory}  = $mandatory;
        $res->{$tag}->{repeatable} = $repeatable;
  }
  $sth=      $dbh->prepare(
"SELECT tagfield,tagsubfield,liblibrarian,libopac,tab, mandatory, repeatable,authorised_value,authtypecode,value_builder,kohafield,seealso,hidden,isurl 
FROM auth_subfield_structure 
WHERE authtypecode=? 
ORDER BY tagfield,tagsubfield"
    );
    $sth->execute($authtypecode);

    my $subfield;
    my $authorised_value;
    my $value_builder;
    my $kohafield;
    my $seealso;
    my $hidden;
    my $isurl;
    my $link;

    while (
        ( $tag,         $subfield,   $liblibrarian,   , $libopac,      $tab,
        $mandatory,     $repeatable, $authorised_value, $authtypecode,
        $value_builder, $kohafield,  $seealso,          $hidden,
        $isurl,            $link )
        = $sth->fetchrow
      )
    {
        $res->{$tag}->{$subfield}->{lib}              = ($forlibrarian or !$libopac)?$liblibrarian:$libopac;
        $res->{$tag}->{$subfield}->{tab}              = $tab;
        $res->{$tag}->{$subfield}->{mandatory}        = $mandatory;
        $res->{$tag}->{$subfield}->{repeatable}       = $repeatable;
        $res->{$tag}->{$subfield}->{authorised_value} = $authorised_value;
        $res->{$tag}->{$subfield}->{authtypecode}     = $authtypecode;
        $res->{$tag}->{$subfield}->{value_builder}    = $value_builder;
        $res->{$tag}->{$subfield}->{kohafield}        = $kohafield;
        $res->{$tag}->{$subfield}->{seealso}          = $seealso;
        $res->{$tag}->{$subfield}->{hidden}           = $hidden;
        $res->{$tag}->{$subfield}->{isurl}            = $isurl;
        $res->{$tag}->{$subfield}->{link}            = $link;
    }
    return $res;
}

sub AUTHaddauthority {
# pass the MARC::Record to this function, and it will create the records in the authority table
  my ($record,$authid,$authtypecode) = @_;
  my $dbh=C4::Context->dbh;
  my $leader='         a              ';##Fixme correct leader as this one just adds utf8 to MARC21
#substr($leader,8,1)=$leadercode;
#    $record->leader($leader);
# my ($authfield,$authidsubfield)=AUTHfind_marc_from_kohafield($dbh,"auth_header.authid",$authtypecode);
# my ($authfield2,$authtypesubfield)=AUTHfind_marc_from_kohafield($dbh,"auth_header.authtypecode",$authtypecode);
# my ($linkidfield,$linkidsubfield)=AUTHfind_marc_from_kohafield($dbh,"auth_header.linkid",$authtypecode);

# if authid empty => true add, find a new authid number
  if (!$authid) {
    my $sth=$dbh->prepare("select max(authid) from auth_header");
    $sth->execute;
    ($authid)=$sth->fetchrow;
    $authid=$authid+1;
  ##Insert the recordID in MARC record 
  ##Both authid and authtypecode is expected to be in the same field. Modify if other requirements arise
    $record->add_fields('001',$authid) unless $record->field('001');
    $record->add_fields('152','','','b'=>$authtypecode) unless $record->field('152');
    #           $record->add_fields('100','','','b'=>$authtypecode);
    warn $record->as_formatted;
    $dbh->do("lock tables auth_header WRITE");
    $sth=$dbh->prepare("insert into auth_header (authid,datecreated,authtypecode,marc) values (?,now(),?,?)");
    $sth->execute($authid,$authtypecode,$record->as_usmarc);    
    $sth->finish;
    
  }else{
      ##Modified record reinsertid
#       my $idfield=$record->field('001');
#       $record->delete_field($idfield);
      $record->add_fields('001',$authid) unless ($record->field('001'));
      $record->add_fields('152','','','b'=>$authtypecode) unless ($record->field('152'));
#       $record->add_fields($authfield,$authid);
#       $record->add_fields($authfield2,'','',$authtypesubfield=>$authtypecode);
#       warn $record->as_formatted;
      $dbh->do("lock tables auth_header WRITE");
      my $sth=$dbh->prepare("update auth_header set marc=? where authid=?");
      $sth->execute($record->as_usmarc,$authid);
      $sth->finish;
    }
    $dbh->do("unlock tables");
    ModZebra($authid,'specialUpdate',"authorityserver");

    return ($authid);
}

sub XMLgetauthority {

    # Returns MARC::XML of the authority passed in parameter.
  my ( $authid ) = @_;
  my $dbh=C4::Context->dbh;
  my $sth =
      $dbh->prepare("select marc from auth_header where authid=? "  );
  $sth->execute($authid);
  my ($marc)=$sth->fetchrow;
  $marc=MARC::File::USMARC::decode($marc);
  my $marcxml=$marc->as_xml_record();
  return $marcxml;

}

sub AUTHgetauthority {
# Returns MARC::Record of the biblio passed in parameter.
  my ($authid)=@_;
  my $dbh=C4::Context->dbh;
  my $sth=$dbh->prepare("select marc from auth_header where authid=?");
  $sth->execute($authid);
  my ($marc) = $sth->fetchrow;
  my $record=MARC::File::USMARC::decode($marc);

  return ($record);
}

sub AUTHgetauth_type {
    my ($authtypecode) = @_;
    my $dbh=C4::Context->dbh;
    my $sth=$dbh->prepare("select * from auth_types where authtypecode=?");
    $sth->execute($authtypecode);
    return $sth->fetchrow_hashref;
}

sub AUTHmodauthority {
    my ($authid,$record,$authtypecode,$merge)=@_;
    my $dbh=C4::Context->dbh;
    my ($oldrecord)=&AUTHgetauthority($authid);
    if ($oldrecord eq $record) {
        return;
    }
my $sth=$dbh->prepare("update auth_header set marc=? where authid=?");
#warn find if linked records exist and delete them
my($linkidfield,$linkidsubfield)=AUTHfind_marc_from_kohafield("auth_header.linkid",$authtypecode);

if ($oldrecord->field($linkidfield)){
my @fields=$oldrecord->field($linkidfield);
    foreach my $field (@fields){
my    $linkid=$field->subfield($linkidsubfield) ;
    if ($linkid){
        ##Modify the record of linked
        my $linkrecord=AUTHgetauthority($linkid);
        my $linktypecode=AUTHfind_authtypecode($linkid);
        my ( $linkidfield2,$linkidsubfield2)=AUTHfind_marc_from_kohafield("auth_header.linkid",$linktypecode);
        my @linkfields=$linkrecord->field($linkidfield2);
            foreach my $linkfield (@linkfields){
            if ($linkfield->subfield($linkidsubfield2) eq $authid){
                $linkrecord->delete_field($linkfield);
                $sth->execute($linkrecord->as_usmarc,$linkid);
                ModZebra($linkid,'specialUpdate',"authorityserver");
            }
            }#foreach linkfield
    }
    }#foreach linkid
}
#Now rewrite the $record to table with an add
$authid=AUTHaddauthority($record,$authid,$authtypecode);


### If a library thinks that updating all biblios is a long process and wishes to leave that to a cron job to use merge_authotities.p
### they should have a system preference "dontmerge=1" otherwise by default biblios will be updated
### the $merge flag is now depreceated and will be removed at code cleaning

if (C4::Context->preference('dontmerge') ){
# save the file in localfile/modified_authorities
    my $cgidir = C4::Context->intranetdir ."/cgi-bin";
    unless (opendir(DIR,"$cgidir")) {
            $cgidir = C4::Context->intranetdir."/";
    }

    my $filename = $cgidir."/localfile/modified_authorities/$authid.authid";
    open AUTH, "> $filename";
    print AUTH $authid;
    close AUTH;
} else {
    &merge($authid,$record,$authid,$record);
}
return $authid;
}

sub AUTHdelauthority {
    my ($authid,$keep_biblio) = @_;
    my $dbh=C4::Context->dbh;
# if the keep_biblio is set to 1, then authority entries in biblio are preserved.

ModZebra($authid,"recordDelete","authorityserver");
    $dbh->do("delete from auth_header where authid=$authid") ;

}

sub AUTHhtml2marc {
    my ($rtags,$rsubfields,$rvalues,%indicators) = @_;
    my $dbh=C4::Context->dbh;
    my $prevtag = -1;
    my $record = MARC::Record->new();
#---- TODO : the leader is missing

#     my %subfieldlist=();
    my $prevvalue; # if tag <10
    my $field; # if tag >=10
    for (my $i=0; $i< @$rtags; $i++) {
        # rebuild MARC::Record
        if (@$rtags[$i] ne $prevtag) {
            if ($prevtag < 10) {
                if ($prevvalue) {
                    $record->add_fields((sprintf "%03s",$prevtag),$prevvalue);
                }
            } else {
                if ($field) {
                    $record->add_fields($field);
                }
            }
            $indicators{@$rtags[$i]}.='  ';
            if (@$rtags[$i] <10) {
                $prevvalue= @$rvalues[$i];
                undef $field;
            } else {
                undef $prevvalue;
                $field = MARC::Field->new( (sprintf "%03s",@$rtags[$i]), substr($indicators{@$rtags[$i]},0,1),substr($indicators{@$rtags[$i]},1,1), @$rsubfields[$i] => @$rvalues[$i]);
            }
            $prevtag = @$rtags[$i];
        } else {
            if (@$rtags[$i] <10) {
                $prevvalue=@$rvalues[$i];
            } else {
                if (length(@$rvalues[$i])>0) {
                    $field->add_subfields(@$rsubfields[$i] => @$rvalues[$i]);
                }
            }
            $prevtag= @$rtags[$i];
        }
    }
    # the last has not been included inside the loop... do it now !
    $record->add_fields($field) if $field;
    return $record;
}


sub FindDuplicate {

    my ($record,$authtypecode)=@_;
#    warn "IN for ".$record->as_formatted;
    my $dbh = C4::Context->dbh;
#    warn "".$record->as_formatted;
    my $sth = $dbh->prepare("select auth_tag_to_report from auth_types where authtypecode=?");
    $sth->execute($authtypecode);
    my ($auth_tag_to_report) = $sth->fetchrow;
    $sth->finish;
#     warn "record :".$record->as_formatted." authtattoreport :$auth_tag_to_report";
    # build a request for authoritysearch
    my $query='at='.$authtypecode.' ';
    map {$query.= " and he=\"".$_->[1]."\"" if ($_->[0]=~/[A-z]/)}  $record->field($auth_tag_to_report)->subfields() if $record->field($auth_tag_to_report);
    my ($error,$results)=SimpleSearch($query,"authorityserver");
    # there is at least 1 result => return the 1st one
    if (@$results>0) {
      my $marcrecord = MARC::File::USMARC::decode($results->[0]);
      return $marcrecord->field('001')->data,getsummary($marcrecord,$marcrecord->field('001')->data,$authtypecode);
    }
    # no result, returns nothing
    return;
}

sub getsummary{
## give this a Marc record to return summary
my ($record,$authid,$authtypecode)=@_;

my $dbh=C4::Context->dbh;
# my $authtypecode = AUTHfind_authtypecode($dbh,$authid);
 my $authref = getauthtype($authtypecode);
        my $summary = $authref->{summary};
        my @fields = $record->fields();
#        chop $tags_using_authtype; # FIXME: why commented out?
        my $reported_tag;

        # if the library has a summary defined, use it. Otherwise, build a standard one
        if ($summary) {
            my @fields = $record->fields();
#             $reported_tag = '$9'.$result[$counter];
            foreach my $field (@fields) {
                my $tag = $field->tag();
                my $tagvalue = $field->as_string();
                $summary =~ s/\[(.?.?.?.?)$tag\*(.*?)]/$1$tagvalue$2\[$1$tag$2]/g;
                if ($tag<10) {
                if ($tag eq '001') {
                    $reported_tag.='$3'.$field->data();
                }

                } else {
                    my @subf = $field->subfields;
                    for my $i (0..$#subf) {
                        my $subfieldcode = $subf[$i][0];
                        my $subfieldvalue = $subf[$i][1];
                        my $tagsubf = $tag.$subfieldcode;
                        $summary =~ s/\[(.?.?.?.?)$tagsubf(.*?)]/$1$subfieldvalue$2\[$1$tagsubf$2]/g;
#                         if ($tag eq $auth_tag_to_report) {
#                             $reported_tag.='$'.$subfieldcode.$subfieldvalue;
#                         }
                    }
                }
            }
            $summary =~ s/\[(.*?)]//g;
            $summary =~ s/\n/<br>/g;
        } else {
            my $heading; # = $authref->{summary};
            my $altheading;
            my $seeheading;
            my $see;
            my @fields = $record->fields();
            if (C4::Context->preference('marcflavour') eq 'UNIMARC') {
            # construct UNIMARC summary, that is quite different from MARC21 one
                # accepted form
                foreach my $field ($record->field('2..')) {
                    $heading.= $field->as_string();
                }
                # rejected form(s)
                foreach my $field ($record->field('4..')) {
                    $summary.= "&nbsp;&nbsp;&nbsp;<i>".$field->as_string()."</i><br/>";
                    $summary.= "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<i>see:</i> ".$heading."<br/>";
                }
                # see :
                foreach my $field ($record->field('5..')) {
                    $summary.= "&nbsp;&nbsp;&nbsp;<i>".$field->as_string()."</i><br/>";
                    $summary.= "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<i>see:</i> ".$heading."<br/>";
                }
                # // form
                foreach my $field ($record->field('7..')) {
                    $seeheading.= "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<i>see also:</i> ".$field->as_string()."<br />";
                    $altheading.= "&nbsp;&nbsp;&nbsp;".$field->as_string()."<br />";
                    $altheading.= "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<i>see also:</i> ".$heading."<br />";
                }
                $summary = "<b>".$heading."</b><br />".$seeheading.$altheading.$summary;
            } else {
            # construct MARC21 summary
                foreach my $field ($record->field('1..')) {
                    if ($record->field('100')) {
                        $heading.= $field->as_string('abcdefghjklmnopqrstvxyz68');
                    } elsif ($record->field('110')) {
                                            $heading.= $field->as_string('abcdefghklmnoprstvxyz68');
                    } elsif ($record->field('111')) {
                                            $heading.= $field->as_string('acdefghklnpqstvxyz68');
                    } elsif ($record->field('130')) {
                                            $heading.= $field->as_string('adfghklmnoprstvxyz68');
                    } elsif ($record->field('148')) {
                                            $heading.= $field->as_string('abvxyz68');
                    } elsif ($record->field('150')) {
                #    $heading.= $field->as_string('abvxyz68');
                $heading.= $field->as_formatted();
                    my $tag=$field->tag();
                    $heading=~s /^$tag//g;
                    $heading =~s /\_/\$/g;
                    } elsif ($record->field('151')) {
                                            $heading.= $field->as_string('avxyz68');
                    } elsif ($record->field('155')) {
                                            $heading.= $field->as_string('abvxyz68');
                    } elsif ($record->field('180')) {
                                            $heading.= $field->as_string('vxyz68');
                    } elsif ($record->field('181')) {
                                            $heading.= $field->as_string('vxyz68');
                    } elsif ($record->field('182')) {
                                            $heading.= $field->as_string('vxyz68');
                    } elsif ($record->field('185')) {
                                            $heading.= $field->as_string('vxyz68');
                    } else {
                        $heading.= $field->as_string();
                    }
                } #See From
                foreach my $field ($record->field('4..')) {
                    $seeheading.= "&nbsp;&nbsp;&nbsp;".$field->as_string()."<br />";
                    $seeheading.= "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<i>see:</i> ".$seeheading."<br />";
                } #See Also
                foreach my $field ($record->field('5..')) {
                    $altheading.= "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<i>see also:</i> ".$field->as_string()."<br />";
                    $altheading.= "&nbsp;&nbsp;&nbsp;".$field->as_string()."<br />";
                    $altheading.= "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<i>see also:</i> ".$altheading."<br />";
                }
                $summary.=$heading.$seeheading.$altheading;
            }
        }
return $summary;
}

sub BuildUnimarcHierarchies{
  my $authid = shift @_;
#   warn "authid : $authid";
  my $force = shift @_;
  my @globalresult;
  my $dbh=C4::Context->dbh;
  my $hierarchies;
  my $data = AUTHgetheader($authid);
  
  if ($data->{'authtrees'} and not $force){
    return $data->{'authtrees'};
  } elsif ($data->{'authtrees'}){
    $hierarchies=$data->{'authtrees'};
  } else {
    my $record = AUTHgetauthority($authid);
    my $found;
    foreach my $field ($record->field('550')){
      if ($field->subfield('5') && $field->subfield('5') eq 'g'){
        my $parentrecord = AUTHgetauthority($field->subfield('3'));
        my $localresult=$hierarchies;
        my $trees;
        $trees = BuildUnimarcHierarchies($field->subfield('3'));
        my @trees;
        if ($trees=~/;/){
           @trees = split(/;/,$trees);
        } else {
           push @trees, $trees;
        }
        foreach (@trees){
          $_.= ",$authid";
        }
        @globalresult = (@globalresult,@trees);
        $found=1;
      }
      $hierarchies=join(";",@globalresult);
    }
    #Unless there is no ancestor, I am alone.
    $hierarchies="$authid" unless ($hierarchies);
  }
  AUTHsavetrees($authid,$hierarchies);
  return $hierarchies;
}

sub BuildUnimarcHierarchy{
	my $record = shift @_;
    my $class = shift @_;
    my $authid_constructed = shift @_;
	my $authid=$record->subfield('250','3');
    my %cell;
	my $parents=""; my $children="";
    my (@loopparents,@loopchildren);
	foreach my $field ($record->field('550')){
		if ($field->subfield('5') && $field->subfield('a')){
		  if ($field->subfield('5') eq 'h'){
            push @loopchildren, { "childauthid"=>$field->subfield('3'),"childvalue"=>$field->subfield('a')};
		  }elsif ($field->subfield('5') eq 'g'){
            push @loopparents, { "parentauthid"=>$field->subfield('3'),"parentvalue"=>$field->subfield('a')};
		  }
		# brothers could get in there with an else
		}
	}
    $cell{"ifparents"}=1 if (scalar(@loopparents)>0);
    $cell{"ifchildren"}=1 if (scalar(@loopchildren)>0);
    $cell{"loopparents"}=\@loopparents if (scalar(@loopparents)>0);
    $cell{"loopchildren"}=\@loopchildren if (scalar(@loopchildren)>0);
    $cell{"class"}=$class;
    $cell{"loopauthid"}=$authid;
    $cell{"current_value"} =1 if $authid eq $authid_constructed;
    $cell{"value"}=$record->subfield('250',"a");
	return \%cell;
}

sub AUTHgetheader{
	my $authid = shift @_;
	my $sql= "SELECT * from auth_header WHERE authid = ?";
	my $dbh=C4::Context->dbh;
	my $rq= $dbh->prepare($sql);
    $rq->execute($authid);
	my $data= $rq->fetchrow_hashref;
	return $data;
}

sub AUTHsavetrees{
	my $authid = shift @_;
	my $trees = shift @_;
	my $sql= "UPDATE IGNORE auth_header set authtrees=? WHERE authid = ?";
	my $dbh=C4::Context->dbh;
	my $rq= $dbh->prepare($sql);
    $rq->execute($trees,$authid);
}

sub merge {
    my ($mergefrom,$MARCfrom,$mergeto,$MARCto) = @_;
    my $dbh=C4::Context->dbh;
    my $authtypecodefrom = AUTHfind_authtypecode($mergefrom);
    my $authtypecodeto = AUTHfind_authtypecode($mergeto);
    # return if authority does not exist
    my @X = $MARCfrom->fields();
    return if $#X == -1;
    @X = $MARCto->fields();
    return if $#X == -1;
    
    
    # search the tag to report
    my $sth = $dbh->prepare("select auth_tag_to_report from auth_types where authtypecode=?");
    $sth->execute($authtypecodefrom);
    my ($auth_tag_to_report) = $sth->fetchrow;

    my @record_to;
    @record_to = $MARCto->field($auth_tag_to_report)->subfields() if $MARCto->field($auth_tag_to_report);
    my @record_from;
    @record_from = $MARCfrom->field($auth_tag_to_report)->subfields() if $MARCfrom->field($auth_tag_to_report);
    
    # search all biblio tags using this authority.
    $sth = $dbh->prepare("select distinct tagfield from marc_subfield_structure where authtypecode=?");
    $sth->execute($authtypecodefrom);
my @tags_using_authtype;
    while (my ($tagfield) = $sth->fetchrow) {
        push @tags_using_authtype,$tagfield."9" ;
    }

    # now, find every biblio using this authority
### try ZOOM search here
my $oConnection=C4::Context->Zconn("biblioserver");
my $query;
$query= "an= ".$mergefrom;
my $oResult = $oConnection->search(new ZOOM::Query::CCL2RPN( $query, $oConnection ));
my $count=$oResult->size() if  ($oResult);
my @reccache;
my $z=0;
while ( $z<$count ) {
my $rec;
         $rec=$oResult->record($z);
    my $marcdata = $rec->raw();
push @reccache, $marcdata;
$z++;
}
$oResult->destroy();
foreach my $marc(@reccache){

my $update;
    my $marcrecord;
    $marcrecord = MARC::File::USMARC::decode($marc);
    foreach my $tagfield (@tags_using_authtype){
    $tagfield=substr($tagfield,0,3);
        my @tags = $marcrecord->field($tagfield);
        foreach my $tag (@tags){
                my $tagsubs=$tag->subfield("9");
#warn "$tagfield:$tagsubs:$mergefrom";
                    if ($tagsubs== $mergefrom) {
               
            $tag->update("9" =>$mergeto);
    foreach my $subfield (@record_to) {
#        warn "$subfield,$subfield->[0],$subfield->[1]";
            $tag->update($subfield->[0] =>$subfield->[1]);
            }#for $subfield
        }
             $marcrecord->delete_field($tag);
                $marcrecord->add_fields($tag);
        $update=1;
        }#for each tag
    }#foreach tagfield
        my $oldbiblio = TransformMarcToKoha($dbh,$marcrecord,"") ;
        if ($update==1){
        # FIXME : this NEWmodbiblio does not exist anymore...
        &ModBiblio($marcrecord,$oldbiblio->{'biblionumber'},GetFrameworkCode($oldbiblio->{'biblionumber'})) ;
        }
    
}#foreach $marc
}#sub
END { }       # module clean-up code here (global destructor)

=back

=head1 AUTHOR

Koha Developement team <info@koha.org>

Paul POULAIN paul.poulain@free.fr

=cut

# $Id$
# $Log$
# Revision 1.44  2007/04/05 12:17:55  btoumi
# add "sort by" with heading-entity in authorities search
#
# Revision 1.43  2007/03/30 11:59:16  tipaul
# some cleaning (minor, the main one will come later) : removing some unused subs
#
# Revision 1.42  2007/03/29 16:45:53  tipaul
# Code cleaning of Biblio.pm (continued)
#
# All subs have be cleaned :
# - removed useless
# - merged some
# - reordering Biblio.pm completly
# - using only naming conventions
#
# Seems to have broken nothing, but it still has to be heavily tested.
# Note that Biblio.pm is now much more efficient than previously & probably more reliable as well.
#
# Revision 1.41  2007/03/29 13:30:31  tipaul
# Code cleaning :
# == Biblio.pm cleaning (useless) ==
# * some sub declaration dropped
# * removed modbiblio sub
# * removed moditem sub
# * removed newitems. It was used only in finishrecieve. Replaced by a TransformKohaToMarc+AddItem, that is better.
# * removed MARCkoha2marcItem
# * removed MARCdelsubfield declaration
# * removed MARCkoha2marcBiblio
#
# == Biblio.pm cleaning (naming conventions) ==
# * MARCgettagslib renamed to GetMarcStructure
# * MARCgetitems renamed to GetMarcItem
# * MARCfind_frameworkcode renamed to GetFrameworkCode
# * MARCmarc2koha renamed to TransformMarcToKoha
# * MARChtml2marc renamed to TransformHtmlToMarc
# * MARChtml2xml renamed to TranformeHtmlToXml
# * zebraop renamed to ModZebra
#
# == MARC=OFF ==
# * removing MARC=OFF related scripts (in cataloguing directory)
# * removed checkitems (function related to MARC=off feature, that is completly broken in head. If someone want to reintroduce it, hard work coming...)
# * removed getitemsbybiblioitem (used only by MARC=OFF scripts, that is removed as well)
#
# Revision 1.40  2007/03/28 10:39:16  hdl
# removing $dbh as a parameter in AuthoritiesMarc functions
# And reporting all differences into the scripts taht relies on those functions.
#
# Revision 1.39  2007/03/16 01:25:08  kados
# Using my precrash CVS copy I did the following:
#
# cvs -z3 -d:ext:kados@cvs.savannah.nongnu.org:/sources/koha co -P koha
# find koha.precrash -type d -name "CVS" -exec rm -v {} \;
# cp -r koha.precrash/* koha/
# cd koha/
# cvs commit
#
# This should in theory put us right back where we were before the crash
#
# Revision 1.39  2007/03/12 22:16:31  kados
# chcking for field before calling subfields
#
# Revision 1.38  2007/03/09 14:31:47  tipaul
# rel_3_0 moved to HEAD
#
# Revision 1.28.2.17  2007/02/05 13:16:08  hdl
# Removing Link from AuthoritiesMARC summary (caused a problem owed to the API differences between opac and intranet)
# + removing $dbh in authoritysearch
# + adding links in templates on summaries to go to full view.
# (no more links in popup authorities. or should we add it ?)
#
# Revision 1.28.2.16  2007/02/02 18:07:42  hdl
# Sorting and searching for exact term now works.
#
# Revision 1.28.2.15  2007/01/24 10:17:47  hdl
# FindDuplicate Now works.
# Be AWARE that it needs a change ccl.properties.
#
# Revision 1.28.2.14  2007/01/10 14:40:11  hdl
# Adding Authorities tree.
#
# Revision 1.28.2.13  2007/01/09 15:18:09  hdl
# Adding an to ccl.properties to allow ccl search for authority-numbers.
# Fixing Some problems with the previous modification to allow pqf search to work for more than one page.
# Using search for an= for an authority-Number.
#
# Revision 1.28.2.12  2007/01/09 13:51:31  hdl
# Bug Fixing : AUTHcount_usage used *synchronous* connection where biblio used ****asynchronous**** one.
# First try to get it work.
#
# Revision 1.28.2.11  2007/01/05 14:37:26  btoumi
# bug fix : remove wrong field in sql syntaxe from auth_subfield_structure table
#
# Revision 1.28.2.10  2007/01/04 13:11:08  tipaul
# commenting 2 zconn destroy
#
# Revision 1.28.2.9  2006/12/22 15:09:53  toins
# removing C4::Database;
#
# Revision 1.28.2.8  2006/12/20 17:13:19  hdl
# modifying use of GILS into use of @attr 1=Koha-Auth-Number
#
# Revision 1.28.2.7  2006/12/18 16:45:38  tipaul
# FIXME upcased
#
# Revision 1.28.2.6  2006/12/07 16:45:43  toins
# removing warn compilation. (perl -wc)
#
# Revision 1.28.2.5  2006/12/06 14:19:59  hdl
# ABugFixing : Authority count  Management.
#
# Revision 1.28.2.4  2006/11/17 13:18:58  tipaul
# code cleaning : removing use of "bib", and replacing with "biblionumber"
#
# WARNING : I tried to do carefully, but there are probably some mistakes.
# So if you encounter a problem you didn't have before, look for this change !!!
# anyway, I urge everybody to use only "biblionumber", instead of "bib", "bi", "biblio" or anything else. will be easier to maintain !!!
#
# Revision 1.28.2.3  2006/11/17 11:17:30  tipaul
# code cleaning : removing use of "bib", and replacing with "biblionumber"
#
# WARNING : I tried to do carefully, but there are probably some mistakes.
# So if you encounter a problem you didn't have before, look for this change !!!
# anyway, I urge everybody to use only "biblionumber", instead of "bib", "bi", "biblio" or anything else. will be easier to maintain !!!
#
# Revision 1.28.2.2  2006/10/12 22:04:47  hdl
# Authorities working with zebra.
# zebra Configuration files are comitted next.
