fix :

- make second display to be responsive

app/services/kbz_merchant.rb

@@ -132,22 +132,68 @@ class KbzMerchant
       )
 
      puts "Response: #{response}"
-    response.body
-    # puts "Response: #{response}"
+     JSON.parse(response.body)
     rescue HTTParty::Error => e
-      raise PaymentError, "HTTP error: #{e.message}"
+      {
+        error: true,
+        code: 'http_error',
+        message: "HTTP error: #{e.message}",
+        alert: "Payment service unavailable. Please try again later."
+      }
     rescue SocketError => e
-      raise PaymentError, "Network error: #{e.message}"
+      {
+        error: true,
+        code: 'network_error',
+        message: "Network error: #{e.message}",
+        alert: "Network connection failed. Please check your internet."
+      }
+    rescue JSON::ParserError => e
+      {
+        error: true,
+        code: 'invalid_response',
+        message: "Invalid response format: #{e.message}",
+        alert: "Received invalid payment response. Please contact support."
+      }
+    rescue StandardError => e
+      {
+        error: true,
+        code: 'unexpected_error',
+        message: "Unexpected error: #{e.message}",
+        alert: "An unexpected error occurred. Please try again."
+      }
     end
   end
 
 
   def handle_response(response)
-    json_response = JSON.parse(response)
-    if json_response.dig('Response', 'result') == 'SUCCESS'
-      json_response['Response']
+    if response['error']
+      {
+        status: 'error',
+        code: response['code'],
+        message: response['message']
+      }
+    elsif response.dig('Response', 'result') == 'SUCCESS'
+      {
+        status: 'success',
+        data: response['Response']
+      }
     else
-      raise PaymentError, "Payment failed: #{json_response['Response']['msg']}"
+      error_code = response.dig('Response', 'code')
+      error_message = response.dig('Response', 'msg')
+      case error_code
+      when 'OrderCenter.FAILED_CREATE_ORDER_FOR_DUPLICATED_MERCHANT_ORDER_ID'
+        {
+          status: 'failed',
+          code: error_code,
+          message: 'Duplicate order ID detected. Please use a unique reference ID.'
+        }
+      else
+        {
+          status: 'failed',
+          code: error_code || 'unknown_error',
+          message: error_message || 'Payment processing failed'
+        }
+      end
     end
   end
 end