completed SMS gateway project

app/controllers/admin/dashboard_controller.rb

@@ -0,0 +1,20 @@
+module Admin
+  class DashboardController < BaseController
+    def index
+      @stats = {
+        total_gateways: Gateway.count,
+        online_gateways: Gateway.online.count,
+        total_api_keys: ApiKey.count,
+        active_api_keys: ApiKey.active_keys.count,
+        messages_today: SmsMessage.where("created_at >= ?", Time.current.beginning_of_day).count,
+        messages_sent_today: SmsMessage.where("created_at >= ? AND direction = ?", Time.current.beginning_of_day, "outbound").count,
+        messages_received_today: SmsMessage.where("created_at >= ? AND direction = ?", Time.current.beginning_of_day, "inbound").count,
+        failed_messages_today: SmsMessage.where("created_at >= ? AND status = ?", Time.current.beginning_of_day, "failed").count,
+        pending_messages: SmsMessage.pending.count
+      }
+
+      @recent_messages = SmsMessage.order(created_at: :desc).limit(10)
+      @recent_gateways = Gateway.order(last_heartbeat_at: :desc).limit(5)
+    end
+  end
+end