MDL-58939 portfolio: Remove picasa portfolio

Picasa is discontinued since 2016 so portfolio_picasa has been
removed from core Moodle.

lib/classes/plugin_manager.php

@@ -1725,6 +1725,7 @@ public static function is_deleted_standard_plugin($type, $name) {
             'block' => array('course_overview', 'messages', 'community', 'participants'),
             'cachestore' => array('memcache'),
             'enrol' => array('authorize'),
+            'portfolio' => array('picasa'),
             'qformat' => array('webct'),
             'message' => array('jabber'),
             'quizaccess' => array('safebrowser'),
@@ -1933,7 +1934,7 @@ public static function standard_plugins_list($type) {
             ),
 
             'portfolio' => array(
-                'boxnet', 'download', 'flickr', 'googledocs', 'mahara', 'picasa'
+                'boxnet', 'download', 'flickr', 'googledocs', 'mahara'
             ),
 
             'profilefield' => array(

lib/db/upgrade.php

@@ -2778,5 +2778,29 @@ function xmldb_main_upgrade($oldversion) {
         upgrade_main_savepoint(true, 2021091100.02);
     }
 
+    if ($oldversion < 2021091700.01) {
+        // If portfolio_picasa is no longer present, remove it.
+        if (!file_exists($CFG->dirroot . '/portfolio/picasa/version.php')) {
+            $instance = $DB->get_record('portfolio_instance', ['plugin' => 'picasa']);
+            if (!empty($instance)) {
+                // Remove all records from portfolio_instance_config.
+                $DB->delete_records('portfolio_instance_config', ['instance' => $instance->id]);
+                // Remove all records from portfolio_instance_user.
+                $DB->delete_records('portfolio_instance_user', ['instance' => $instance->id]);
+                // Remove all records from portfolio_log.
+                $DB->delete_records('portfolio_log', ['portfolio' => $instance->id]);
+                // Remove all records from portfolio_tempdata.
+                $DB->delete_records('portfolio_tempdata', ['instance' => $instance->id]);
+                // Remove the record from the portfolio_instance table.
+                $DB->delete_records('portfolio_instance', ['id' => $instance->id]);
+            }
+
+            // Clean config.
+            unset_all_config_for_plugin('portfolio_picasa');
+        }
+
+        upgrade_main_savepoint(true, 2021091700.01);
+    }
+
     return true;
 }

portfolio/googledocs/lang/en/portfolio_googledocs.php

@@ -27,7 +27,7 @@
 $string['nooauthcredentials'] = 'OAuth credentials required.';
 $string['nooauthcredentials_help'] = 'To use the Google Drive portfolio plugin you must configure OAuth credentials in the portfolio settings.';
 $string['nosessiontoken'] = 'A session token does not exist preventing export to google.';
-$string['oauthinfo'] = '<p>To use this plugin, you must register your site with Google, as described in the documentation <a href="{$a->docsurl}">Google OAuth 2.0 setup</a>.</p><p>As part of the registration process, you will need to enter the following URL as \'Authorized Redirect URIs\':</p><p>{$a->callbackurl}</p><p>Once registered, you will be provided with a client ID and secret which can be used to configure all Google Drive and Picasa plugins.</p>';
+$string['oauthinfo'] = '<p>To use this plugin, you must register your site with Google, as described in the documentation <a href="{$a->docsurl}">Google OAuth 2.0 setup</a>.</p><p>As part of the registration process, you will need to enter the following URL as \'Authorized Redirect URIs\':</p><p>{$a->callbackurl}</p><p>Once registered, you will be provided with a client ID and secret which can be used to configure all Google Drive plugins.</p>';
 $string['pluginname'] = 'Google Drive';
 $string['privacy:metadata'] = 'This plugin sends data externally to a linked Google account. It does not store data locally.';
 $string['privacy:metadata:data'] = 'Personal data passed through from the portfolio subsystem.';