From 4869d7206a9711bca38cca2713632e73aa47ccf5 Mon Sep 17 00:00:00 2001
From: Tomas Cohen Arazi <tomascohen@theke.io>
Date: Tue, 8 Jan 2019 13:13:46 -0300
Subject: [PATCH] Bug 21846: (follow-up) Add maintenance script

This patch adds a maintenance script that generates the missing
tags_approval entries based on the tags_all table, and then recalculates
the weights for both tags_approval and tags_index tables.

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
---
 installer/data/mysql/atomicupdate/bug_21846.perl |   2 +
 misc/maintenance/fix_tags_weight.pl              | 140 +++++++++++++++++++++++
 2 files changed, 142 insertions(+)
 create mode 100755 misc/maintenance/fix_tags_weight.pl

diff --git a/installer/data/mysql/atomicupdate/bug_21846.perl b/installer/data/mysql/atomicupdate/bug_21846.perl
index 6396f19..1c41f3f 100644
--- a/installer/data/mysql/atomicupdate/bug_21846.perl
+++ b/installer/data/mysql/atomicupdate/bug_21846.perl
@@ -23,4 +23,6 @@ if( CheckVersion( $DBversion ) ) {
 
     SetVersion( $DBversion );
     print "Upgrade to $DBversion done (Bug 21846 - Using emoji as tags has broken weights)\n";
+    my $maintenance_script = C4::Context->config("intranetdir") . "misc/maintenance/fix_tags_weight.pl";
+    print "WARNING: (Bug 21846) You need to manually run $maintenance_script to fix possible issues with tags.\n";
 }
diff --git a/misc/maintenance/fix_tags_weight.pl b/misc/maintenance/fix_tags_weight.pl
new file mode 100755
index 0000000..549d170
--- /dev/null
+++ b/misc/maintenance/fix_tags_weight.pl
@@ -0,0 +1,140 @@
+#!/usr/bin/perl
+
+# Copyright 2018 Theke Solutions
+#
+# 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 3 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, see <http://www.gnu.org/licenses>.
+
+use Modern::Perl;
+
+use C4::Context;
+use C4::Tags;
+
+use Koha::Database;
+use Koha::Tags;
+use Koha::Tags::Approvals;
+use Koha::Tags::Indexes;
+
+use Getopt::Long;
+use Pod::Usage;
+
+=head1 NAME
+
+fix_tags_weight.pl - Fix weight for tags
+
+=head1 SYNOPSIS
+
+fix_tags_weight.pl [ --verbose or -v ] [ --help or -h ]
+
+ Options:
+   --help or -h         Brief usage message
+   --verbose or -v      Be verbose
+
+=head1 DESCRIPTION
+
+This script fixes the calculated weights for the tags introduced by patrons.
+
+=over 8
+
+=item B<--help>
+
+Prints a brief usage message and exits.
+
+=item B<--verbose>
+
+Prints information about the current weight, and the new one for each term/biblionumber.
+
+=back
+
+=cut
+
+binmode( STDOUT, ":encoding(UTF-8)" );
+
+my $help;
+my $verbose;
+
+my $result = GetOptions(
+    'help|h'    => \$help,
+    'verbose|v' => \$verbose
+);
+
+if ( not $result or $help ) {
+    pod2usage();
+    exit 0;
+}
+
+fix_tags_approval($verbose);
+fix_tags_index( $verbose );
+
+sub fix_tags_approval {
+
+    my ($verbose) = @_;
+
+    print "Fix tags_approval\n=================\n" if $verbose;
+
+    my $dbh = C4::Context->dbh;
+    # Search the terms in tags_all that don't exist in tags_approval
+    my $sth = $dbh->prepare(
+        q{
+        SELECT term
+        FROM (
+            SELECT DISTINCT(tags_all.term) AS term, tags_approval.term AS approval FROM tags_all
+            LEFT JOIN tags_approval
+            ON (tags_all.term=tags_approval.term)) a
+        WHERE approval IS NULL;
+    }
+    );
+    $sth->execute();
+    my $approved = C4::Context->preference('TagsModeration') ? 0 : 1;
+
+    # Add missing terms to tags_approval
+    while ( my $row = $sth->fetchrow_hashref ) {
+        my $term = $row->{term};
+        C4::Tags::add_tag_approval( $term, 0, $approved );
+        print "Added => $term\n";
+    }
+
+    my $approvals = Koha::Tags::Approvals->search;
+    # Recalculate weight_total for all tags_approval rows
+    while ( my $approval = $approvals->next ) {
+        my $count = Koha::Tags->search( { term => $approval->term } )->count;
+        print $approval->term . "\t|\t" . $approval->weight_total . "\t=>\t" . $count . "\n"
+            if $verbose;
+        $approval->weight_total($count)->store;
+    }
+}
+
+sub fix_tags_index {
+
+    my ($verbose) = @_;
+    my $indexes = Koha::Tags::Indexes->search;
+
+    print "Fix tags_index\n==============\n" if $verbose;
+
+    while ( my $index = $indexes->next ) {
+        my $count
+            = Koha::Tags->search( { term => $index->term, biblionumber => $index->biblionumber } )
+            ->count;
+        print $index->term . "/"
+            . $index->biblionumber . "\t|\t"
+            . $index->weight
+            . "\t=>\t"
+            . $count . "\n"
+            if $verbose;
+        $index->weight($count)->store;
+    }
+}
+
+1;
-- 
2.1.4