[push] clean code

Author: capcom6

internal/sms-gateway/modules/push/upstream/client.go

@@ -43,17 +43,18 @@ func (c *Client) Open(ctx context.Context) error {
 }
 
 func (c *Client) Send(ctx context.Context, messages []types.Message) ([]error, error) {
-	payload := make(smsgateway.UpstreamPushRequest, 0, len(messages))
-
-	for _, message := range messages {
-		payload = append(payload, smsgateway.PushNotification{
-			Token: message.Token,
-			Event: message.Event.Type,
-			Data:  message.Event.Data,
-		})
-	}
+	payload := lo.Map(
+		messages,
+		func(item types.Message, _ int) smsgateway.PushNotification {
+			return smsgateway.PushNotification{
+				Token: item.Token,
+				Event: item.Event.Type,
+				Data:  item.Event.Data,
+			}
+		},
+	)
 
-	payloadBytes, err := json.Marshal(payload)
+	payloadBytes, err := json.Marshal(smsgateway.UpstreamPushRequest(payload))
 
 	if err != nil {
 		return nil, fmt.Errorf("can't marshal payload: %w", err)