From a97a6b28d2f4e6d3c91115ebc33f56c811cec894 Mon Sep 17 00:00:00 2001
From: Nick Clemens <nick@bywatersolutions.com>
Date: Thu, 17 Mar 2022 10:50:02 +0000
Subject: [PATCH] Bug 17170: Handle search filters in query builders

This patch updates the query building code to expand filters when searching
and pass them back as part of the cgi and descriptive search strings

Sponsored-by: Sponsored by: Round Rock Public Library [https://www.roundrocktexas.gov/departments/library/]

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
---
 C4/Search.pm                                    |  3 ++-
 Koha/SearchEngine/Elasticsearch/QueryBuilder.pm | 11 ++++++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/C4/Search.pm b/C4/Search.pm
index 72bbbcb6be..c396414242 100644
--- a/C4/Search.pm
+++ b/C4/Search.pm
@@ -21,6 +21,7 @@ use C4::Biblio qw( TransformMarcToKoha GetMarcFromKohaField GetFrameworkCode Get
 use C4::Koha qw( getFacets GetVariationsOfISBN GetNormalizedUPC GetNormalizedEAN GetNormalizedOCLCNumber GetNormalizedISBN getitemtypeimagelocation );
 use Koha::DateUtils;
 use Koha::Libraries;
+use Koha::SearchEngine::QueryBuilder;
 use Lingua::Stem;
 use XML::Simple;
 use C4::XSLT qw( XSLTParse4Display );
@@ -33,6 +34,7 @@ use Koha::Logger;
 use Koha::Patrons;
 use Koha::Recalls;
 use Koha::RecordProcessor;
+use Koha::SearchFilters;
 use URI::Escape;
 use Business::ISBN;
 use MARC::Record;
@@ -1538,7 +1540,6 @@ sub buildQuery {
     }
     Koha::Logger->get->debug("QUERY BEFORE LIMITS: >$query<");
 
-
     # Normalize the query and limit strings
     # This is flawed , means we can't search anything with : in it
     # if user wants to do ccl or cql, start the query with that
diff --git a/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm b/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm
index 1791670382..554c447601 100644
--- a/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm
+++ b/Koha/SearchEngine/Elasticsearch/QueryBuilder.pm
@@ -806,7 +806,7 @@ sub _convert_index_strings_freeform {
     # Lower case field names
     $search =~ s/($field_name_pattern)(?:,[\w-]*)?($multi_field_pattern):/\L$1\E$2:/og;
     # Resolve possible field aliases
-    $search =~ s/($field_name_pattern)($multi_field_pattern):/(exists $index_field_convert{$1} ? $index_field_convert{$1} : $1)."$2:"/oge;
+    $search =~ s/($field_name_pattern)($multi_field_pattern):/(exists $index_field_convert{$1} ? $index_field_convert{$1} : $1).($1 eq 'kw' ? "$2" : "$2:")/oge;
     return $search;
 }
 
@@ -1069,6 +1069,15 @@ sub _fix_limit_special_cases {
             next unless defined($start) && defined($end);
             push @new_lim, "date-of-publication:[$start TO $end]";
         }
+        elsif( $l =~ /^search_filter:/ ){
+            my ($filter_id) = ( $l =~ /^search_filter:(.*)$/ );
+            my $search_filter = Koha::SearchFilters->find( $filter_id );
+            next unless $search_filter;
+            my $expanded = $search_filter->expand_filter;
+            foreach my $e ( @{$self->_fix_limit_special_cases($expanded)} ) {
+                push @new_lim, $self->clean_search_term( $e );
+            }
+        }
         elsif ( $l =~ /^yr,st-numeric[=:]/ ) {
             my ($date) = ( $l =~ /^yr,st-numeric[=:](.*)$/ );
             next unless defined($date);
-- 
2.39.2