Koha/C4/Letters.pm
2005-08-05 15:50:46 +00:00

275 lines
8.7 KiB
Perl

package C4::Letters;
# 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 Mail::Sendmail;
use C4::Date;
use Date::Manip;
use C4::Suggestions;
use C4::Members;
require Exporter;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
# set the version for version checking
$VERSION = 0.01;
=head1 NAME
C4::Letters - Give functions for Letters management
=head1 SYNOPSIS
use C4::Letters;
=head1 DESCRIPTION
"Letters" is the tool used in Koha to manage informations sent to the patrons and/or the library. This include some cron jobs like
late issues, as well as other tasks like sending a mail to users that have subscribed to a "serial issue alert" (= being warned every time a new issue has arrived at the library)
Letters are managed through "alerts" sent by Koha on some events. All "alert" related functions are in this module too.
=cut
@ISA = qw(Exporter);
@EXPORT = qw(&GetLetterList &getletter &addalert &getalert &delalert &findrelatedto &sendalerts);
=head2 GetLetterList
parameter : $module : the name of the module
This sub returns an array of hashes with all letters from a given module
Each hash entry contains :
- module : the module name
- code : the code of the letter, char(20)
- name : the complete name of the letter, char(200)
- title : the title that will be used as "subject" in mails, char(200)
- content : the content of the letter. Each field to be replaced by a value at runtime is enclosed in << and >>. The fields usually have the same name as in the DB
=cut
sub GetLetterList {
my ($module) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("select * from letter where module=?");
$sth->execute($module);
my @result;
while (my $line = $sth->fetchrow_hashref) {
push @result,$line;
}
return @result;
}
sub getletter {
my ($module,$code) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("select * from letter where module=? and code=?");
$sth->execute($module,$code);
my $line = $sth->fetchrow_hashref;
return $line;
}
=head2 addalert
parameters :
- $borrowernumber : the number of the borrower subscribing to the alert
- $type : the type of alert.
- externalid : the primary key of the object to put alert on. For issues, the alert is made on subscriptionid.
create an alert and return the alertid (primary key)
=cut
sub addalert {
my ($borrowernumber,$type,$externalid) = @_;
my $dbh=C4::Context->dbh;
my $sth = $dbh->prepare("insert into alert (borrowernumber, type, externalid) values (?,?,?)");
$sth->execute($borrowernumber,$type,$externalid);
# get the alert number newly created and return it
my $alertid = $dbh->{'mysql_insertid'};
return $alertid;
}
=head2 delalert
parameters :
- alertid : the alert id
deletes the alert
=cut
sub delalert {
my ($alertid)=@_;
# warn "ALERTID : $alertid";
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("delete from alert where alertid=?");
$sth->execute($alertid);
}
=head2 getalert
parameters :
- $borrowernumber : the number of the borrower subscribing to the alert
- $type : the type of alert.
- externalid : the primary key of the object to put alert on. For issues, the alert is made on subscriptionid.
all parameters NON mandatory. If a parameter is omitted, the query is done without the corresponding parameter. For example, without $externalid, returns all alerts for a borrower on a topic.
=cut
sub getalert {
my ($borrowernumber,$type,$externalid) = @_;
my $dbh=C4::Context->dbh;
my $query = "select * from alert where";
my @bind;
if ($borrowernumber) {
$query .= " borrowernumber=? and";
push @bind,$borrowernumber;
}
if ($type) {
$query .= " type=? and";
push @bind,$type;
}
if ($externalid) {
$query .= " externalid=? and";
push @bind,$externalid;
}
$query =~ s/ and$//;
my $sth = $dbh->prepare($query);
$sth->execute(@bind);
my @result;
while (my $line = $sth->fetchrow_hashref) {
push @result,$line;
}
return \@result if $#result >=0; # return only if there is one result.
return;
}
=head2 findrelatedto
parameters :
- $type : the type of alert
- $externalid : the id of the "object" to query
In the table alert, a "id" is stored in the externalid field. This "id" is related to another table, depending on the type of the alert.
When type=issue, the id is related to a subscriptionid and this sub returns the name of the biblio.
When type=virtual, the id is related to a virtual shelf and this sub returns the name of the sub
=cut
sub findrelatedto {
my ($type,$externalid) = @_;
my $dbh=C4::Context->dbh;
my $sth;
if ($type eq 'issue') {
$sth=$dbh->prepare("select title as result from subscription left join biblio on subscription.biblionumber=biblio.biblionumber where subscriptionid=?");
}
if ($type eq 'borrower') {
$sth=$dbh->prepare("select concat(firstname,' ',surname) from borrowers where borrowernumber=?");
}
$sth->execute($externalid);
my ($result) = $sth->fetchrow;
return $result;
}
=head2 sendalert
parameters :
- $type : the type of alert
- $externalid : the id of the "object" to query
- $letter : the letter to send.
send an alert to all borrowers having put an alert on a given subject.
=cut
sub sendalerts {
my ($type,$externalid,$letter)=@_;
my $dbh=C4::Context->dbh;
if ($type eq 'issue') {
# warn "sending issues...";
my $letter = getletter('serial',$letter);
# prepare the letter...
# search the biblionumber
my $sth=$dbh->prepare("select biblionumber from subscription where subscriptionid=?");
$sth->execute($externalid);
my ($biblionumber)=$sth->fetchrow;
# parsing branch info
my $userenv = C4::Context->userenv;
parseletter($letter,'branches',$userenv->{branch});
# parsing librarian name
$letter->{content} =~ s/<<LibrarianFirstname>>/$userenv->{firstname}/g;
$letter->{content} =~ s/<<LibrarianSurname>>/$userenv->{surname}/g;
$letter->{content} =~ s/<<LibrarianEmailaddress>>/$userenv->{emailaddress}/g;
# parsing biblio information
parseletter($letter,'biblio',$biblionumber);
parseletter($letter,'biblioitems',$biblionumber);
# find the list of borrowers to alert
my $alerts = getalert('','issue',$externalid);
foreach (@$alerts) {
# and parse borrower ...
my $innerletter = $letter;
my $borinfo = getmember('',$_->{'borrowernumber'});
parseletter($innerletter,'borrowers',$_->{'borrowernumber'});
# ... then send mail
if ($borinfo->{emailaddress}) {
my %mail = ( To => $borinfo->{emailaddress},
From => $userenv->{emailaddress},
Subject => "".$innerletter->{title},
Message => "".$innerletter->{content},
);
sendmail(%mail);
# warn "sending to $mail{To} From $mail{From} subj $mail{Subject} Mess $mail{Message}";
}
}
}
}
=head2
parameters :
- $letter : a hash to letter fields (title & content useful)
- $table : the Koha table to parse.
- $pk : the primary key to query on the $table table
parse all fields from a table, and replace values in title & content with the appropriate value
(not exported sub, used only internally)
=cut
sub parseletter {
my ($letter,$table,$pk) = @_;
# warn "Parseletter : ($letter,$table,$pk)";
my $dbh=C4::Context->dbh;
my $sth;
if ($table eq 'biblio') {
$sth = $dbh->prepare("select * from biblio where biblionumber=?");
} elsif ($table eq 'biblioitems') {
$sth = $dbh->prepare("select * from biblioitems where biblionumber=?");
} elsif ($table eq 'borrowers') {
$sth = $dbh->prepare("select * from borrowers where borrowernumber=?");
} elsif ($table eq 'branches') {
$sth = $dbh->prepare("select * from branches where branchcode=?");
}
$sth->execute($pk);
# store the result in an hash
my $values = $sth->fetchrow_hashref;
# and get all fields from the table
$sth = $dbh->prepare("show columns from $table");
$sth->execute;
while ((my $field) = $sth->fetchrow_array) {
my $replacefield="<<$table.$field>>";
my $replacedby = $values->{$field};
# warn "REPLACE $replacefield by $replacedby";
$letter->{title} =~ s/$replacefield/$replacedby/g;
$letter->{content} =~ s/$replacefield/$replacedby/g;
}
}
END { } # module clean-up code here (global destructor)