1 package C4::Circulation::Fines;
5 # Copyright 2000-2002 Katipo Communications
7 # This file is part of Koha.
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26 use vars qw($VERSION @ISA @EXPORT);
28 # set the version for version checking
33 C4::Circulation::Fines - Koha module dealing with fines
37 use C4::Circulation::Fines;
41 This module contains several functions for dealing with fines for
42 overdue items. It is primarily used by the 'misc/fines2.pl' script.
51 @EXPORT = qw(&Getoverdues &CalcFine &BorType &UpdateFine &ReplacementCost);
55 ($count, $overdues) = &Getoverdues();
57 Returns the list of all overdue books.
59 C<$count> is the number of elements in C<@{$overdues}>.
61 C<$overdues> is a reference-to-array. Each element is a
62 reference-to-hash whose keys are the fields of the issues table in the
68 my $dbh = C4::Context->dbh;
69 my $sth=$dbh->prepare("Select * from issues where date_due < now() and returndate is
70 NULL order by borrowernumber");
72 # FIXME - Use push @results
75 while (my $data=$sth->fetchrow_hashref){
87 ($amount, $chargename, $message) =
88 &CalcFine($itemnumber, $borrowercode, $days_overdue);
90 Calculates the fine for a book.
92 The issuingrules table in the Koha database is a fine matrix, listing
93 the penalties for each type of patron for each type of item and each branch (e.g., the
94 standard fine for books might be $0.50, but $1.50 for DVDs, or staff
95 members might get a longer grace period between the first and second
96 reminders that a book is overdue).
98 The fine is calculated as follows: if it is time for the first
99 reminder, the fine is the value listed for the given (branch, item type,
100 borrower code) combination. If it is time for the second reminder, the
101 fine is doubled. Finally, if it is time to send the account to a
102 collection agency, the fine is set to 5 local monetary units (a really
103 good deal for the patron if the library is in Italy). Otherwise, the
106 Note that the way this function is currently implemented, it only
107 returns a nonzero value on the notable days listed above. That is, if
108 the categoryitems entry says to send a first reminder 7 days after the
109 book is due, then if you call C<&CalcFine> 7 days after the book is
110 due, it will give a nonzero fine. If you call C<&CalcFine> the next
111 day, however, it will say that the fine is 0.
113 C<$itemnumber> is the book's item number.
115 C<$borrowercode> is the borrower code of the patron who currently has
118 C<$days_overdue> is the number of days elapsed since the book's due
121 C<&CalcFine> returns a list of three values:
123 C<$amount> is the fine owed by the patron (see above).
125 C<$chargename> is the chargename field from the applicable record in
126 the categoryitem table, whatever that is.
128 C<$message> is a text message, either "First Notice", "Second Notice",
134 my ($itemnumber,$bortype,$difference)=@_;
135 my $dbh = C4::Context->dbh;
137 # Look up the categoryitem record for this book's item type and the
138 # given borrwer type.
139 # The reason this query is so messy is that it's a messy question:
140 # given the barcode, we can find the book's items record. This gives
141 # us the biblioitems record, which gives us a set of categoryitem
142 # records. Then we select the one that corresponds to the desired
145 # FIXME - Is it really necessary to get absolutely everything from
146 # all four tables? It looks as if this code only wants
147 # firstremind, chargeperiod, accountsent, and chargename from the
148 # categoryitem table.
150 my $sth=$dbh->prepare("Select * from items,biblioitems,itemtypes,issuingrules where items.itemnumber=?
151 and items.biblioitemnumber=biblioitems.biblioitemnumber and
152 biblioitems.itemtype=itemtypes.itemtype and
153 categoryitem.itemtype=itemtypes.itemtype and
154 categoryitem.categorycode=? and (items.itemlost <> 1 or items.itemlost is NULL)");
156 $sth->execute($itemnumber,$bortype);
157 my $data=$sth->fetchrow_hashref;
158 # FIXME - Error-checking: the item might be lost, or there
159 # might not be an entry in 'categoryitem' for this item type
165 # Is it time to send out the first reminder?
166 # FIXME - I'm not sure the "=="s are correct here. Let's say that
167 # $data->{firstremind} is today, but 'fines2.pl' doesn't run for
168 # some reason (the cron daemon died, the server crashed, the
169 # sysadmin had the machine down for maintenance, or whatever).
171 # Then the next day, the book is $data->{firstremind}+1 days
172 # overdue. But this function returns $amount == 0, $printout ==
173 # undef, on the assumption that 'fines2.pl' ran the previous day. So
174 # the first thing the patron gets is a second notice, but that's a
175 # week after the server crash, so people may not connect the two
177 if ($difference == $data->{'firstremind'}){
178 # Yes. Set the fine as listed.
179 $amount=$data->{'fine'};
180 $printout="First Notice";
183 # Is it time to send out a second reminder?
184 my $second=$data->{'firstremind'}+$data->{'chargeperiod'};
185 if ($difference == $second){
186 # Yes. The fine is double.
187 $amount=$data->{'fine'}*2;
188 $printout="Second Notice";
191 # Is it time to send the account to a collection agency?
192 # FIXME - At least, I *think* that's what this code is doing.
193 if ($difference == $data->{'accountsent'} && $data->{'fine'} > 0){
194 # Yes. Set the fine at 5 local monetary units.
195 # FIXME - This '5' shouldn't be hard-wired.
197 $printout="Final Notice";
199 return($amount,$data->{'chargename'},$printout);
204 &UpdateFine($itemnumber, $borrowernumber, $amount, $type, $description);
206 (Note: the following is mostly conjecture and guesswork.)
208 Updates the fine owed on an overdue book.
210 C<$itemnumber> is the book's item number.
212 C<$borrowernumber> is the borrower number of the patron who currently
213 has the book on loan.
215 C<$amount> is the current amount owed by the patron.
217 C<$type> will be used in the description of the fine.
219 C<$description> is a string that must be present in the description of
220 the fine. I think this is expected to be a date in DD/MM/YYYY format.
222 C<&UpdateFine> looks up the amount currently owed on the given item
223 and sets it to C<$amount>, creating, if necessary, a new entry in the
224 accountlines table of the Koha database.
228 # FIXME - This API doesn't look right: why should the caller have to
229 # specify both the item number and the borrower number? A book can't
230 # be on loan to two different people, so the item number should be
233 my ($itemnum,$bornum,$amount,$type,$due)=@_;
234 my $dbh = C4::Context->dbh;
235 # FIXME - What exactly is this query supposed to do? It looks up an
236 # entry in accountlines that matches the given item and borrower
237 # numbers, where the description contains $due, and where the
238 # account type has one of several values, but what does this _mean_?
239 # Does it look up existing fines for this item?
240 # FIXME - What are these various account types? ("FU", "O", "F", "M")
241 my $sth=$dbh->prepare("Select * from accountlines where itemnumber=? and
242 borrowernumber=? and (accounttype='FU' or accounttype='O' or
243 accounttype='F' or accounttype='M') and description like ?");
244 $sth->execute($itemnum,$bornum,"%$due%");
246 if (my $data=$sth->fetchrow_hashref){
247 # I think this if-clause deals with the case where we're updating
249 # print "in accounts ...";
250 if ($data->{'amount'} != $amount){
253 my $diff=$amount - $data->{'amount'};
254 my $out=$data->{'amountoutstanding'}+$diff;
255 my $sth2=$dbh->prepare("update accountlines set date=now(), amount=?,
256 amountoutstanding=?,accounttype='FU' where
257 borrowernumber=? and itemnumber=?
258 and (accounttype='FU' or accounttype='O') and description like ?");
259 $sth2->execute($amount,$out,$data->{'borrowernumber'},$data->{'itemnumber'},"%$due%");
262 # print "no update needed $data->{'amount'}"
265 # I think this else-clause deals with the case where we're adding
267 my $sth4=$dbh->prepare("select title from biblio,items where items.itemnumber=?
268 and biblio.biblionumber=items.biblionumber");
269 $sth4->execute($itemnum);
270 my $title=$sth4->fetchrow_hashref;
272 # print "not in account";
273 my $sth3=$dbh->prepare("Select max(accountno) from accountlines");
275 # FIXME - Make $accountno a scalar.
276 my @accountno=$sth3->fetchrow_array;
279 my $sth2=$dbh->prepare("Insert into accountlines
280 (borrowernumber,itemnumber,date,amount,
281 description,accounttype,amountoutstanding,accountno) values
282 (?,?,now(),?,?,'FU',?,?)");
283 $sth2->execute($bornum,$itemnum,$amount,"$type $title->{'title'} $due",$amount,$accountno[0]);
291 $borrower = &BorType($borrowernumber);
293 Looks up a patron by borrower number.
295 C<$borrower> is a reference-to-hash whose keys are all of the fields
296 from the borrowers and categories tables of the Koha database. Thus,
297 C<$borrower> contains all information about both the borrower and
298 category he or she belongs to.
303 my ($borrowernumber)=@_;
304 my $dbh = C4::Context->dbh;
305 my $sth=$dbh->prepare("Select * from borrowers,categories where
307 borrowers.categorycode=categories.categorycode");
308 $sth->execute($borrowernumber);
309 my $data=$sth->fetchrow_hashref;
314 =item ReplacementCost
316 $cost = &ReplacementCost($itemnumber);
318 Returns the replacement cost of the item with the given item number.
324 my $dbh = C4::Context->dbh;
325 my $sth=$dbh->prepare("Select replacementprice from items where itemnumber=?");
326 $sth->execute($itemnum);
327 # FIXME - Use fetchrow_array or something.
328 my $data=$sth->fetchrow_hashref;
330 return($data->{'replacementprice'});
340 Koha Developement team <info@koha.org>