From 443221bb3a5be174356c2eb8a3d445133edb66fa Mon Sep 17 00:00:00 2001
From: Timothy Alexis Vass <timothy_alexis.vass@ub.lu.se>
Date: Wed, 16 Sep 2020 08:35:15 +0200
Subject: [PATCH] Bug 26454: Add system preference to set meta description for
 the OPAC

Websites should have a meta description tag that shows in search engine results.
The content should also be available to set as a system preference.

To test:
1) Look at opac-main source (in the browser) and see that meta name="description" is missing.
2) Apply patch.
3) Run: perl installer/data/mysql/updatedatabase.pl
4) Go to system preferences > OPAC and add a description to OpacMetaDescription.
5) Look at opac-main source and confirm that meta name="description" now has content equal to the text set in the OpacMetaDescription system preference.
6) Sign off.

Sponsored by: Lunds University Libraries
Signed-off-by: Magnus Enger <magnus@libriotech.no>
Works as advertised. Newlines are preserved. Double quote is rendered
as &quot;. Nice enhancement!
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
---
 .../bug_26454-add_OpacMetaDescription_syspref.perl         | 7 +++++++
 installer/data/mysql/sysprefs.sql                          | 1 +
 .../prog/en/modules/admin/preferences/opac.pref            | 4 ++++
 .../opac-tmpl/bootstrap/en/includes/doc-head-close.inc     | 3 +++
 4 files changed, 15 insertions(+)
 create mode 100755 installer/data/mysql/atomicupdate/bug_26454-add_OpacMetaDescription_syspref.perl

diff --git a/installer/data/mysql/atomicupdate/bug_26454-add_OpacMetaDescription_syspref.perl b/installer/data/mysql/atomicupdate/bug_26454-add_OpacMetaDescription_syspref.perl
new file mode 100755
index 0000000000..30c43e0d62
--- /dev/null
+++ b/installer/data/mysql/atomicupdate/bug_26454-add_OpacMetaDescription_syspref.perl
@@ -0,0 +1,7 @@
+$DBversion = 'XXX'; # will be replaced by the RM
+if( CheckVersion( $DBversion ) ) {
+    $dbh->do( "INSERT IGNORE INTO systempreferences (variable, value, options, explanation, type) VALUES ('OpacMetaDescription','','','This description will show in search engine results (160 characters).','Textarea');" );
+
+    # Always end with this (adjust the bug info)
+    NewVersion( $DBversion, 26454, "Add system preference to set meta description for the OPAC");
+}
diff --git a/installer/data/mysql/sysprefs.sql b/installer/data/mysql/sysprefs.sql
index 1df6a1fb53..d1f39dca2e 100644
--- a/installer/data/mysql/sysprefs.sql
+++ b/installer/data/mysql/sysprefs.sql
@@ -414,6 +414,7 @@ INSERT INTO systempreferences ( `variable`, `value`, `options`, `explanation`, `
 ('OpacMaintenance','0','','If ON, enables maintenance warning in OPAC','YesNo'),
 ('OpacMaintenanceNotice','','','A user-defined block of HTML to appear on screen when OpacMaintenace is enabled','Textarea'),
 ('OpacMaxItemsToDisplay','50','','Max items to display at the OPAC on a biblio detail','Integer'),
+('OpacMetaDescription','','','This description will show in search engine results (160 characters).','Textarea'),
 ('OpacMoreSearches', '', NULL, 'Add additional elements to the OPAC more searches bar', 'Textarea'),
 ('OPACMySummaryHTML','','70|10','Enter the HTML that will appear in a column on the \'my summary\' and \'my reading history\' tabs when a user is logged in to the OPAC. Enter {BIBLIONUMBER}, {TITLE}, {AUTHOR}, or {ISBN} in place of their respective variables in the HTML. Leave blank to disable.','Textarea'),
 ('OPACMySummaryNote','','','Note to display on the patron summary page. This note only appears if the patron is connected.','Free'),
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/opac.pref b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/opac.pref
index e078692ff6..1d09da94c7 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/opac.pref
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/opac.pref
@@ -73,6 +73,10 @@ OPAC:
               type: textarea
               syntax: text/html
               class: code
+        -
+            - "This description will show in search engine results (160 characters)."
+            - pref: OpacMetaDescription
+              type: textarea
         -
             - By default, show bibliographic records
             - pref: BiblioDefaultView
diff --git a/koha-tmpl/opac-tmpl/bootstrap/en/includes/doc-head-close.inc b/koha-tmpl/opac-tmpl/bootstrap/en/includes/doc-head-close.inc
index f3c9d7c817..e0963ca5d3 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/en/includes/doc-head-close.inc
+++ b/koha-tmpl/opac-tmpl/bootstrap/en/includes/doc-head-close.inc
@@ -5,6 +5,9 @@
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="Koha [% Version | html %]" /> <!-- leave this for stats -->
 <meta name="viewport" content="width=device-width, initial-scale=1" />
+[% IF ( Koha.Preference('OpacMetaDescription') ) %]
+    <meta name="description" content="[% Koha.Preference('OpacMetaDescription') | html %]" />
+[% END %]
 <link rel="shortcut icon" href="[% IF ( Koha.Preference('OpacFavicon') ) %][% Koha.Preference('OpacFavicon') | url %][% ELSE %][% interface | url %]/[% theme | url %]/images/favicon.ico[% END %]" type="image/x-icon" />
 [% IF ( bidi ) %]
     [% Asset.css("lib/jquery/jquery-ui-rtl-1.12.1.min.css") | $raw %]
-- 
2.20.1