From df61d236f5850461c8946bdebaa9fe4d4036fa3d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Mudr=C3=A1k?= <david@moodle.com>
Date: Tue, 22 Aug 2017 20:46:29 +0200
Subject: [PATCH] MDL-59645 repository_flickr: Drop legacy auth tokens and
 nsids

The values stored in these user preferences were valid for the old
flickr auth mechanism and are not usable any more. The new oauth1 based
version needs to store both the token (in the flickr_access_token
preference) and the token secret (flickr_access_token_secret). The new
version does not need to store the user's nsid.

The cryptic names of these legacy settings are a result of how dealing
with user preferences was originally implemented.
---
 repository/flickr/db/upgrade.php | 48 ++++++++++++++++++++++++++++++++
 repository/flickr/version.php    |  2 +-
 2 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 repository/flickr/db/upgrade.php

diff --git a/repository/flickr/db/upgrade.php b/repository/flickr/db/upgrade.php
new file mode 100644
index 00000000000..ba24a773631
--- /dev/null
+++ b/repository/flickr/db/upgrade.php
@@ -0,0 +1,48 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle 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.
+//
+// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Plugin upgrade steps are defined here.
+ *
+ * @package     repository_flickr
+ * @category    upgrade
+ * @copyright   2017 David Mudrák <david@moodle.com>
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Execute repository_flickr upgrade from the given old version.
+ *
+ * @param int $oldversion
+ * @return bool
+ */
+function xmldb_repository_flickr_upgrade($oldversion) {
+    global $DB;
+
+    $dbman = $DB->get_manager();
+
+    if ($oldversion < 2016120501) {
+        // Drop legacy flickr auth tokens and nsid's.
+        $DB->delete_records('user_preferences', ['name' => 'flickr_']);
+        $DB->delete_records('user_preferences', ['name' => 'flickr__nsid']);
+
+        upgrade_plugin_savepoint(true, 2016120501, 'repository', 'flickr');
+    }
+
+    return true;
+}
diff --git a/repository/flickr/version.php b/repository/flickr/version.php
index 21959e53004..5cf7fd99ada 100644
--- a/repository/flickr/version.php
+++ b/repository/flickr/version.php
@@ -26,6 +26,6 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2016120500;        // The current plugin version (Date: YYYYMMDDXX)
+$plugin->version   = 2016120501;        // The current plugin version (Date: YYYYMMDDXX)
 $plugin->requires  = 2016112900;        // Requires this Moodle version
 $plugin->component = 'repository_flickr'; // Full name of the plugin (used for diagnostics)