Koha/RefundLostItemFeeRules.pm

   1 package Koha::RefundLostItemFeeRules;
   2
   3 # Copyright Theke Solutions 2016
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20 use Modern::Perl;
  21
  22 use Koha::Database;
  23 use Koha::Exceptions;
  24
  25 use Koha::CirculationRule;
  26
  27 use base qw(Koha::CirculationRules);
  28
  29 =head1 NAME
  30
  31 Koha::RefundLostItemFeeRules - Koha RefundLostItemFeeRules object set class
  32
  33 =head1 API
  34
  35 =head2 Class Methods
  36
  37 =cut
  38
  39 =head3 _type
  40
  41 =cut
  42
  43 sub _type {
  44     return 'CirculationRule';
  45 }
  46
  47 =head3 object_class
  48
  49 =cut
  50
  51 sub object_class {
  52     return 'Koha::CirculationRule';
  53 }
  54
  55 =head3 should_refund
  56
  57 Koha::RefundLostItemFeeRules->should_refund()
  58
  59 Returns a boolean telling if the fee needs to be refund given the
  60 passed params, and the current rules/sysprefs configuration.
  61
  62 =cut
  63
  64 sub should_refund {
  65
  66     my $self = shift;
  67     my $params = shift;
  68
  69     return $self->_effective_branch_rule( $self->_choose_branch( $params ) );
  70 }
  71
  72
  73 =head3 _effective_branch_rule
  74
  75 Koha::RefundLostItemFeeRules->_effective_branch_rule
  76
  77 Given a branch, returns a boolean representing the resulting rule.
  78 It tries the branch-specific first. Then falls back to the defined default.
  79
  80 =cut
  81
  82 sub _effective_branch_rule {
  83
  84     my $self   = shift;
  85     my $branch = shift;
  86
  87     my $specific_rule = $self->search(
  88         {
  89             branchcode   => $branch,
  90             categorycode => undef,
  91             itemtype     => undef,
  92             rule_name    => 'refund',
  93         }
  94     )->next();
  95
  96     return ( defined $specific_rule )
  97                 ? $specific_rule->rule_value
  98                 : $self->_default_rule;
  99 }
 100
 101 =head3 _choose_branch
 102
 103 my $branch = Koha::RefundLostItemFeeRules->_choose_branch({
 104                 current_branch => 'current_branch_code',
 105                 item_home_branch => 'item_home_branch',
 106                 item_holding_branch => 'item_holding_branch'
 107 });
 108
 109 Helper function that determines the branch to be used to apply the rule.
 110
 111 =cut
 112
 113 sub _choose_branch {
 114
 115     my $self = shift;
 116     my $param = shift;
 117
 118     my $behaviour = C4::Context->preference( 'RefundLostOnReturnControl' ) // 'CheckinLibrary';
 119
 120     my $param_mapping = {
 121            CheckinLibrary => 'current_branch',
 122            ItemHomeBranch => 'item_home_branch',
 123         ItemHoldingBranch => 'item_holding_branch'
 124     };
 125
 126     my $branch = $param->{ $param_mapping->{ $behaviour } };
 127
 128     if ( !defined $branch ) {
 129         Koha::Exceptions::MissingParameter->throw(
 130             "$behaviour requires the " .
 131             $param_mapping->{ $behaviour } .
 132             " param"
 133         );
 134     }
 135
 136     return $branch;
 137 }
 138
 139 =head3 Koha::RefundLostItemFeeRules->find();
 140
 141 Inherit from Koha::Objects->find(), but forces rule_name => 'refund'
 142
 143 =cut
 144
 145 sub find {
 146     my ( $self, @pars ) = @_;
 147
 148     if ( ref($pars[0]) eq 'HASH' ) {
 149         $pars[0]->{rule_name} = 'refund';
 150     }
 151
 152     return $self->SUPER::find(@pars);
 153 }
 154
 155 =head3 _default_rule (internal)
 156
 157 This function returns the default rule defined for refunding lost
 158 item fees on return. It defaults to 1 if no rule is defined.
 159
 160 =cut
 161
 162 sub _default_rule {
 163
 164     my $self = shift;
 165     my $default_rule = $self->search(
 166         {
 167             branchcode   => undef,
 168             categorycode => undef,
 169             itemtype     => undef,
 170             rule_name    => 'refund',
 171         }
 172     )->next();
 173
 174     return (defined $default_rule)
 175                 ? $default_rule->rule_value
 176                 : 1;
 177 }
 178
 179 1;