Discord Transprot user configurable embed fields (#15068)

LibreNMS/Alert/Transport/Discord.php

@@ -35,12 +35,9 @@ use LibreNMS\Util\Http;
 
 class Discord extends Transport
 {
-    public const ALERT_FIELDS_TO_DISCORD_FIELDS = [
-        'timestamp' => 'Timestamp',
-        'severity' => 'Severity',
-        'hostname' => 'Hostname',
+    public const DEFAULT_EMBEDS = 'hostname,name,timestamp,severity';
+    private array $embedFieldTranslations = [
         'name' => 'Rule Name',
-        'rule' => 'Rule',
     ];
 
     public function deliverAlert(array $alert_data): bool
@@ -105,15 +102,12 @@ class Discord extends Transport
     {
         $result = [];
 
-        foreach (self::ALERT_FIELDS_TO_DISCORD_FIELDS as $objKey => $discordKey) {
-            // Skip over keys that do not exist so Discord does not give us a 400.
-            if (! $alert_data[$objKey]) {
-                continue;
-            }
+        $fields = explode(',', $this->config['discord-embed-fields'] ?? self::DEFAULT_EMBEDS);
 
+        foreach ($fields as $field) {
             $result[] = [
-                'name' => $discordKey,
-                'value' => $alert_data[$objKey],
+                'name' => $this->embedFieldTranslations[$field] ?? ucfirst($field),
+                'value' => $alert_data[$field] ?? 'Error: Invalid Field',
             ];
         }
 
@@ -136,6 +130,13 @@ class Discord extends Transport
                     'descr' => 'Enter the config options (format: option=value separated by new lines)',
                     'type' => 'textarea',
                 ],
+                [
+                    'title' => 'Fields to embed in the alert',
+                    'name' => 'discord-embed-fields',
+                    'descr' => 'Comma seperated list of fields from the alert to attach to the Discord message',
+                    'type' => 'text',
+                    'default' => self::DEFAULT_EMBEDS,
+                ],
             ],
             'validation' => [
                 'url' => 'required|url',