From 37f8d4a9c63b472c3a65dd4d440f86b02c645037 Mon Sep 17 00:00:00 2001
From: Vitor <vitorjfa@gmail.com>
Date: Wed, 15 Apr 2026 10:54:13 -0300
Subject: [PATCH] =?UTF-8?q?Adicionar=20cache=20para=20vers=C3=A3o=20do=20W?=
 =?UTF-8?q?hatsApp=20Web=20com=20controle=20de=20concorr=C3=AAncia?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 pkg/whatsmeow/service/whatsmeow.go | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/pkg/whatsmeow/service/whatsmeow.go b/pkg/whatsmeow/service/whatsmeow.go
index 6af7174..3084f7a 100644
--- a/pkg/whatsmeow/service/whatsmeow.go
+++ b/pkg/whatsmeow/service/whatsmeow.go
@@ -15,6 +15,7 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 
 	"golang.org/x/image/webp"
@@ -2293,7 +2294,21 @@ func (w *whatsmeowService) SendToGlobalQueues(eventType string, payload []byte,
 	}
 }
 
+var (
+	cachedWebVersion     *clientVersion
+	cachedWebVersionAt   time.Time
+	cachedWebVersionMu   sync.Mutex
+	webVersionCacheTTL   = 1 * time.Hour
+)
+
 func fetchWhatsAppWebVersion() (*clientVersion, error) {
+	cachedWebVersionMu.Lock()
+	defer cachedWebVersionMu.Unlock()
+
+	if cachedWebVersion != nil && time.Since(cachedWebVersionAt) < webVersionCacheTTL {
+		return cachedWebVersion, nil
+	}
+
 	resp, err := http.Get("https://web.whatsapp.com/sw.js")
 	if err != nil {
 		return nil, fmt.Errorf("failed to fetch WhatsApp Web version: %v", err)
@@ -2327,11 +2342,13 @@ func fetchWhatsAppWebVersion() (*clientVersion, error) {
 
 			// Log qual padrão funcionou
 			if clientRevision > 0 {
-				return &clientVersion{
+				cachedWebVersion = &clientVersion{
 					Major: 2,
 					Minor: 3000,
 					Patch: clientRevision,
-				}, nil
+				}
+				cachedWebVersionAt = time.Now()
+				return cachedWebVersion, nil
 			}
 		}
 	}