fix: replace myservers.cfg reads in UpdateFlashBackup.php (#1517)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Added a new method for verifying user sign-in status using a dedicated
configuration handler.
* Introduced a class to manage connection configuration and status
checks.

* **Refactor**
* Updated logic for checking connection and registration status to use
new configuration handling methods for improved clarity and reliability.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: pujitm

plugin/source/dynamix.unraid.net/etc/rc.d/rc.flash_backup

@@ -166,22 +166,23 @@ _enabled() {
   return 1
 }
 _connected() {
-  CFG=$API_CONFIG_HOME/connect.json
-  [[ ! -f "${CFG}" ]] && return 1
+  local connect_config username status_cfg connection_status
+  connect_config=$API_CONFIG_HOME/connect.json
+  [[ ! -f "${connect_config}" ]] && return 1
 
-  username=$(jq -r '.username // empty' "${CFG}" 2>/dev/null)
+  # is the user signed in?
+  username=$(jq -r '.username // empty' "${connect_config}" 2>/dev/null)
   if [ -z "${username}" ]; then
     return 1
   fi
-  # the minigraph status is no longer synced to the connect config file
-  # to avoid a false negative, we'll omit this check for now.
-  #
-  # shellcheck disable=SC1090
-  # source <(sed -nr '/\[connectionStatus\]/,/\[/{/minigraph/p}' "${CFG}" 2>/dev/null)
-  # # ensure connected
-  # if [[ -z "${minigraph}" || "${minigraph}" != "CONNECTED" ]]; then
-  #   return 1
-  # fi
+  # are we connected to mothership?
+  status_cfg="/var/local/emhttp/connectStatus.json"
+  [[ ! -f "${status_cfg}" ]] && return 1
+  connection_status=$(jq -r '.connectionStatus // empty' "${status_cfg}" 2>/dev/null)
+  if [[ "${connection_status}" != "CONNECTED" ]]; then
+    return 1
+  fi
+  
   return 0
 }
 _haserror() {

plugin/source/dynamix.unraid.net/usr/local/emhttp/plugins/dynamix.my.servers/include/UpdateFlashBackup.php

@@ -18,10 +18,9 @@
 
 $docroot ??= ($_SERVER['DOCUMENT_ROOT'] ?: '/usr/local/emhttp');
 require_once "$docroot/webGui/include/Wrappers.php";
+require_once "$docroot/plugins/dynamix.my.servers/include/connect-config.php";
 
-$myservers_flash_cfg_path='/boot/config/plugins/dynamix.my.servers/myservers.cfg';
-$myservers = file_exists($myservers_flash_cfg_path) ? @parse_ini_file($myservers_flash_cfg_path,true) : [];
-$isRegistered = !empty($myservers['remote']['username']);
+$isRegistered = ConnectConfig::isUserSignedIn();
 
 // Read connection status from the new API status file
 $statusFilePath = '/var/local/emhttp/connectStatus.json';

plugin/source/dynamix.unraid.net/usr/local/emhttp/plugins/dynamix.my.servers/include/connect-config.php

@@ -0,0 +1,26 @@
+<?php
+$docroot = $docroot ?? $_SERVER['DOCUMENT_ROOT'] ?: '/usr/local/emhttp';
+require_once "$docroot/plugins/dynamix.my.servers/include/api-config.php";
+
+/**
+ * Wrapper around the API's connect.json configuration file.
+ */
+class ConnectConfig
+{
+    public const CONFIG_PATH = ApiConfig::CONFIG_DIR . '/connect.json';
+
+    public static function getConfig()
+    {
+        try {
+            return json_decode(file_get_contents(self::CONFIG_PATH), true) ?? [];
+        } catch (Throwable $e) {
+            return [];
+        }
+    }
+
+    public static function isUserSignedIn()
+    {
+        $config = self::getConfig();
+        return ApiConfig::isConnectPluginEnabled() && !empty($config['username'] ?? '');
+    }
+}