From c2ca2d8e9126f7446b2440af228e6bae0adc67e0 Mon Sep 17 00:00:00 2001
From: Dan Poltawski <dan@moodle.com>
Date: Mon, 15 Jul 2013 13:56:39 +0800
Subject: [PATCH] MDL-28466 remove the enrol_authorize data

If there are no records, remove the plugin
---
 lib/accesslib.php  |  1 +
 lib/db/upgrade.php | 34 ++++++++++++++++++++++++++++++++++
 lib/moodlelib.php  |  1 +
 version.php        |  2 +-
 4 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/lib/accesslib.php b/lib/accesslib.php
index a31aedd4b52..a3e2a224eb0 100644
--- a/lib/accesslib.php
+++ b/lib/accesslib.php
@@ -2667,6 +2667,7 @@ function update_capabilities($component = 'moodle') {
 /**
  * Deletes cached capabilities that are no longer needed by the component.
  * Also unassigns these capabilities from any roles that have them.
+ * NOTE: this function is called from lib/db/upgrade.php
  *
  * @access private
  * @param string $component examples: 'moodle', 'mod_forum', 'block_quiz_results'
diff --git a/lib/db/upgrade.php b/lib/db/upgrade.php
index b593aef76f5..4c2e9bc3acd 100644
--- a/lib/db/upgrade.php
+++ b/lib/db/upgrade.php
@@ -2259,5 +2259,39 @@ function xmldb_main_upgrade($oldversion) {
         upgrade_main_savepoint(true, 2013070800.01);
     }
 
+    if ($oldversion < 2013071500.01) {
+        // The enrol_authorize plugin has been removed, if there are no records
+        // and no plugin files then remove the plugin data.
+        $enrolauthorize = new xmldb_table('enrol_authorize');
+        $enrolauthorizerefunds = new xmldb_table('enrol_authorize_refunds');
+
+        if (!file_exists($CFG->dirroot.'/enrol/authorize/version.php') &&
+            $dbman->table_exists($enrolauthorize) &&
+            $dbman->table_exists($enrolauthorizerefunds)) {
+
+            $enrolauthorizecount = $DB->count_records('enrol_authorize');
+            $enrolauthorizerefundcount = $DB->count_records('enrol_authorize_refunds');
+
+            if (empty($enrolauthorizecount) && empty($enrolauthorizerefundcount)) {
+
+                // Drop the database tables.
+                $dbman->drop_table($enrolauthorize);
+                $dbman->drop_table($enrolauthorizerefunds);
+
+                // Drop the message provider and associated data manually.
+                $DB->delete_records('message_providers', array('component' => 'enrol_authorize'));
+                $DB->delete_records_select('config_plugins', "plugin = 'message' AND ".$DB->sql_like('name', '?', false), array("%_provider_enrol_authorize_%"));
+                $DB->delete_records_select('user_preferences', $DB->sql_like('name', '?', false), array("message_provider_enrol_authorize_%"));
+
+                // Remove capabilities.
+                capabilities_cleanup('enrol_authorize');
+
+                // Remove all other associated config.
+                unset_all_config_for_plugin('enrol_authorize');
+            }
+        }
+        upgrade_main_savepoint(true, 2013071500.01);
+    }
+
     return true;
 }
diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index fcb1e18f62e..cbcdef58079 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -1468,6 +1468,7 @@ function unset_config($name, $plugin=NULL) {
 
 /**
  * Remove all the config variables for a given plugin.
+ * NOTE: this function is called from lib/db/upgrade.php
  *
  * @param string $plugin a plugin, for example 'quiz' or 'qtype_multichoice';
  * @return boolean whether the operation succeeded.
diff --git a/version.php b/version.php
index 8920a08849a..e3a379dee50 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2013071500.00;              // YYYYMMDD      = weekly release date of this DEV branch
+$version  = 2013071500.01;              // YYYYMMDD      = weekly release date of this DEV branch
                                         //         RR    = release increments - 00 in DEV branches
                                         //           .XX = incremental changes