+ /**
+ * Fetch the default avatar for the given contact and size
+ *
+ * @param array $contact contact array
+ * @param string $size Size of the avatar picture
+ * @return string avatar URL
+ */
+ public static function getDefaultAvatar(array $contact, string $size)
+ {
+ switch ($size) {
+ case Proxy::SIZE_MICRO:
+ $avatar['size'] = 48;
+ $default = self::DEFAULT_AVATAR_MICRO;
+ break;
+
+ case Proxy::SIZE_THUMB:
+ $avatar['size'] = 80;
+ $default = self::DEFAULT_AVATAR_THUMB;
+ break;
+
+ case Proxy::SIZE_SMALL:
+ default:
+ $avatar['size'] = 300;
+ $default = self::DEFAULT_AVATAR_PHOTO;
+ break;
+ }
+
+ if (!DI::config()->get('system', 'remote_avatar_lookup')) {
+ return DI::baseUrl() . $default;
+ }
+
+ if (!empty($contact['xmpp'])) {
+ $avatar['email'] = $contact['xmpp'];
+ } elseif (!empty($contact['addr'])) {
+ $avatar['email'] = $contact['addr'];
+ } elseif (!empty($contact['url'])) {
+ $avatar['email'] = $contact['url'];
+ } else {
+ return DI::baseUrl() . $default;
+ }
+
+ $avatar['url'] = '';
+ $avatar['success'] = false;
+
+ Hook::callAll('avatar_lookup', $avatar);
+
+ if ($avatar['success'] && !empty($avatar['url'])) {
+ return $avatar['url'];
+ }
+
+ return DI::baseUrl() . $default;
+ }
+
+ /**
+ * Get avatar link for given contact id
+ *
+ * @param integer $cid contact id
+ * @param string $size One of the ProxyUtils::SIZE_* constants
+ * @param string $updated Contact update date
+ * @return string avatar link
+ */
+ public static function getAvatarUrlForId(int $cid, string $size = '', string $updated = ''):string
+ {
+ // We have to fetch the "updated" variable when it wasn't provided
+ // The parameter can be provided to improve performance
+ if (empty($updated)) {
+ $contact = self::getById($cid, ['updated']);
+ $updated = $contact['updated'] ?? '';
+ }
+
+ $url = DI::baseUrl() . '/photo/contact/';
+ switch ($size) {
+ case Proxy::SIZE_MICRO:
+ $url .= Proxy::PIXEL_MICRO . '/';
+ break;
+ case Proxy::SIZE_THUMB:
+ $url .= Proxy::PIXEL_THUMB . '/';
+ break;
+ case Proxy::SIZE_SMALL:
+ $url .= Proxy::PIXEL_SMALL . '/';
+ break;
+ case Proxy::SIZE_MEDIUM:
+ $url .= Proxy::PIXEL_MEDIUM . '/';
+ break;
+ case Proxy::SIZE_LARGE:
+ $url .= Proxy::PIXEL_LARGE . '/';
+ break;
+ }
+ return $url . $cid . ($updated ? '?ts=' . strtotime($updated) : '');
+ }
+
+ /**
+ * Get avatar link for given contact URL
+ *
+ * @param string $url contact url
+ * @param integer $uid user id
+ * @param string $size One of the ProxyUtils::SIZE_* constants
+ * @return string avatar link
+ */
+ public static function getAvatarUrlForUrl(string $url, int $uid, string $size = ''):string
+ {
+ $condition = ["`nurl` = ? AND ((`uid` = ? AND `network` IN (?, ?)) OR `uid` = ?)",
+ Strings::normaliseLink($url), $uid, Protocol::FEED, Protocol::MAIL, 0];
+ $contact = self::selectFirst(['id', 'updated'], $condition);
+ return self::getAvatarUrlForId($contact['id'] ?? 0, $size, $contact['updated']);
+ }
+
+ /**
+ * Get header link for given contact id
+ *
+ * @param integer $cid contact id
+ * @param string $size One of the ProxyUtils::SIZE_* constants
+ * @param string $updated Contact update date
+ * @return string header link
+ */
+ public static function getHeaderUrlForId(int $cid, string $size = '', string $updated = ''):string
+ {
+ // We have to fetch the "updated" variable when it wasn't provided
+ // The parameter can be provided to improve performance
+ if (empty($updated)) {
+ $contact = self::getById($cid, ['updated']);
+ $updated = $contact['updated'] ?? '';
+ }
+
+ $url = DI::baseUrl() . '/photo/header/';
+ switch ($size) {
+ case Proxy::SIZE_MICRO:
+ $url .= Proxy::PIXEL_MICRO . '/';
+ break;
+ case Proxy::SIZE_THUMB:
+ $url .= Proxy::PIXEL_THUMB . '/';
+ break;
+ case Proxy::SIZE_SMALL:
+ $url .= Proxy::PIXEL_SMALL . '/';
+ break;
+ case Proxy::SIZE_MEDIUM:
+ $url .= Proxy::PIXEL_MEDIUM . '/';
+ break;
+ case Proxy::SIZE_LARGE:
+ $url .= Proxy::PIXEL_LARGE . '/';
+ break;
+ }
+
+ return $url . $cid . ($updated ? '?ts=' . strtotime($updated) : '');
+ }
+