From 7865a1c978c7f7c4f73d65cd2f5b943a7305770e Mon Sep 17 00:00:00 2001
From: Raphael Straub <raphael.straub@kit.edu>
Date: Thu, 28 Mar 2024 12:31:15 +0000
Subject: [PATCH] Bug 36503: Add a plugin hook after user authentication

This plugin hook allows to change patron data or define the patron
based on the authenticated user.

To test: Run
prove t/db_dependent/Koha/Auth/Client.t

Sponsored-by: Karlsruhe Institute of Technology (KIT)
Signed-off-by: Thomas Klausner <domm@plix.at>
---
 Koha/Auth/Client.pm               | 25 ++++++++++++++++++
 t/db_dependent/Koha/Auth/Client.t | 43 ++++++++++++++++++++++++++++++-
 2 files changed, 67 insertions(+), 1 deletion(-)

diff --git a/Koha/Auth/Client.pm b/Koha/Auth/Client.pm
index 159dd40c8f..7e9d69e640 100644
--- a/Koha/Auth/Client.pm
+++ b/Koha/Auth/Client.pm
@@ -19,6 +19,8 @@ package Koha::Auth::Client;
 
 use Modern::Perl;
 
+use C4::Context;
+
 use Koha::Exceptions::Auth;
 use Koha::Auth::Identity::Providers;
 
@@ -62,6 +64,29 @@ sub get_user {
 
     my ( $mapped_data, $patron ) = $self->_get_data_and_patron({ provider => $provider, data => $data, config => $config });
 
+    # Call the plugin hook "auth_client_get_user" of all plugins in
+    # ascending priority.
+    if ( C4::Context->config('enable_plugins') ) {
+        my @plugins = Koha::Plugins->new()->GetPlugins(
+            {
+                method => 'auth_client_get_user',
+            }
+        );
+        @plugins = sort { $a->retrieve_data('priority') <=> $b->retrieve_data('priority') } @plugins;
+        my $args = {
+            provider    => $provider,
+            data        => $data,
+            config      => $config,
+            mapped_data => $mapped_data,
+            patron      => $patron,
+        };
+        foreach my $plugin (@plugins) {
+            $plugin->auth_client_get_user($args);
+        }
+        $mapped_data = $args->{'mapped_data'};
+        $patron      = $args->{'patron'};
+    }
+
     $mapped_data //= {};
 
     my $domain = $self->has_valid_domain_config({ provider => $provider, email => $mapped_data->{email}, interface => $interface});
diff --git a/t/db_dependent/Koha/Auth/Client.t b/t/db_dependent/Koha/Auth/Client.t
index 149aaa4818..7020cef9ec 100755
--- a/t/db_dependent/Koha/Auth/Client.t
+++ b/t/db_dependent/Koha/Auth/Client.t
@@ -22,6 +22,7 @@ use Modern::Perl;
 use Test::More tests => 4;
 
 use Test::MockModule;
+use Test::MockObject;
 use Test::Exception;
 
 use JSON qw(encode_json);
@@ -38,7 +39,7 @@ my $schema  = Koha::Database->new->schema;
 my $builder = t::lib::TestBuilder->new;
 
 subtest 'get_user() tests' => sub {
-    plan tests => 4;
+    plan tests => 5;
 
     $schema->storage->txn_begin;
 
@@ -77,6 +78,46 @@ subtest 'get_user() tests' => sub {
     is( $mapped_data->{surname},              undef,                                         'No surname mapped' );
     is( $domain->identity_provider_domain_id, $resolved_domain->identity_provider_domain_id, 'Is the same domain' );
 
+    # Test the plugin hook "auth_client_get_user".
+    t::lib::Mocks::mock_config( 'enable_plugins', 1 );
+    my $get_plugins = sub {
+        my $methods = [
+            {
+                auth_client_get_user => sub {
+                    $_[1]->{mapped_data}->{firstname} = 'test name modified 1';
+                    return;
+                },
+                retrieve_data => sub { return $_[1] eq 'priority' ? 2 : undef; }
+            },
+            {
+                auth_client_get_user => sub {
+                    $_[1]->{mapped_data}->{firstname} = 'test name modified 2';
+                    return;
+                },
+                retrieve_data => sub { return $_[1] eq 'priority' ? 1 : undef; }
+            }
+        ];
+        my @plugins;
+        foreach my $method ( @{$methods} ) {
+            my $plugin = Test::MockObject->new;
+            foreach my $name ( keys %{$method} ) {
+                $plugin->mock( $name, $method->{$name} );
+            }
+            push @plugins, $plugin;
+        }
+        return @plugins;
+    };
+    my $plugins_module = Test::MockModule->new('Koha::Plugins');
+    $plugins_module->mock( 'GetPlugins',          $get_plugins );
+    $plugins_module->mock( 'get_enabled_plugins', $get_plugins );
+    ( $resolved_patron, $mapped_data, $resolved_domain ) =
+        $client->get_user( { provider => $provider->code, data => $data, interface => 'opac' } );
+    is(
+        $mapped_data->{firstname},
+        'test name modified 1',
+        'Data modified correctly by plugins'
+    );
+
     $schema->storage->txn_rollback;
 
 };
-- 
2.30.2