Add more recipient stats for all endpoints

scripts/lua/modules/notifications/endpoints/discord.lua

@@ -129,6 +129,12 @@ function discord.dequeueRecipientAlerts(recipient, budget)
   local settings = readSettings(recipient)
   local max_alerts_per_request = 1 -- collapse up to X alerts per request
 
+  local success = true
+  local error_message = nil
+  local delivered = 0
+  local discarded = 0
+  local failures = 0
+
   -- Dequeue alerts up to budget x max_alerts_per_request
   -- Note: in this case budget is the number of email to send
   while budget_used <= budget and more_available do
@@ -146,6 +152,8 @@ function discord.dequeueRecipientAlerts(recipient, budget)
         if alert_utils.filter_notification(notification, recipient.recipient_id) then
           notifications[#notifications + 1] = notification.alert
           i = i + 1
+        else
+          discarded = discarded + 1
         end
       else
         break
@@ -165,7 +173,12 @@ function discord.dequeueRecipientAlerts(recipient, budget)
 
     local res, msg = discord.sendMessage(table.concat(alerts, "\n"), settings)
     if not res then
-      return {success = false, error_message = msg or "Unable to send alerts to Discord"}
+       success = false
+       error_message = msg or "Unable to send alerts to Discord"
+       failures = failures + #notifications
+       goto done
+    else
+       delivered = delivered + #notifications
     end
 
     -- Remove the processed messages from the queue
@@ -173,7 +186,15 @@ function discord.dequeueRecipientAlerts(recipient, budget)
     sent = sent + 1
   end
 
-  return {success = true, more_available = more_available}
+ ::done::
+  return {
+    success = success,
+    error_message = error_message,
+    delivered = delivered,
+    discarded = discarded,
+    failures  = failures,
+    more_available = more_available,
+ }
 end
 
 -- ##############################################