Add upstream plugins

Signed-off-by: Adrian Nöthlich <git@promasu.tech>

wp-content/plugins/all-in-one-event-calendar/app/model/meta-user.php

@@ -0,0 +1,96 @@
+<?php
+
+/**
+ * User meta entries management.
+ *
+ * Meta entries management based on {@see Ai1ec_Meta} class.
+ *
+ * @author     Time.ly Network, Inc.
+ * @since      2.0
+ * @package    Ai1EC
+ * @subpackage Ai1EC.Model
+ */
+class Ai1ec_Meta_User extends Ai1ec_Meta {
+
+    /**
+     * Get meta value for current user.
+     *
+     * @param string $meta_key Name of meta entry to get for current user.
+     * @param mixed  $default  Value to return if no entry found.
+     *
+     * @return mixed Current user's option or $default if none found.
+     */
+    public function get_current( $meta_key, $default = null ) {
+        $user_id = 0;
+        if ( is_callable( 'wp_get_current_user' ) ) {
+            $user    = wp_get_current_user();
+            $user_id = (int)$user->ID;
+            unset( $user );
+        }
+        if ( $user_id <= 0 ) {
+            return $default;
+        }
+        return $this->get( $user_id, $meta_key, $default );
+    }
+
+    /**
+     * user_selected_tz method
+     *
+     * Get/set user selected (preferred) timezone.
+     * If only {@see $user_id} is provided - method acts as getter.
+     * Otherwise it acts as setter.
+     *
+     * @param int    $user_id      ID of user whose timezone is being checked/changed
+     * @param string $new_value    New timezone string value to set user preferrence
+     * @param bool   $force_update Set to true to force value update instead of add
+     *
+     * @return mixed Return value depends on activity:
+     *     - [getter] string User preferred timezone name (might be empty string)
+     *     - [setter] bool   Success of preferrence change
+     */
+    public function user_selected_tz(
+        $user_id,
+        $new_value    = NULL,
+        $force_update = false
+    ) {
+        $meta_key  = 'ai1ec_timezone';
+        $user_id   = (int)$user_id;
+        $old_value = $this->get(
+            $user_id,
+            $meta_key,
+            NULL,
+            true
+        );
+        if ( NULL !== $new_value ) {
+            if ( ! in_array( $new_value, timezone_identifiers_list() ) ) {
+                return false;
+            }
+            $success = false;
+            if ( true === $force_update || ! empty( $old_value ) ) {
+                $success = update_user_meta(
+                    $user_id,
+                    $meta_key,
+                    $new_value,
+                    $old_value
+                );
+            } else {
+                $success = add_user_meta(
+                    $user_id,
+                    $meta_key,
+                    $new_value,
+                    true
+                );
+                if ( false === $success ) {
+                    return $this->user_selected_tz(
+                        $user_id,
+                        $new_value,
+                        true
+                    );
+                }
+            }
+            return $success;
+        }
+        return $old_value;
+    }
+
+}