From f8b1c6e0fa5dfb52241677b56f8d4d8467bdb2e7 Mon Sep 17 00:00:00 2001
From: Marcelo Assis <marcelo.apdassis@gmail.com>
Date: Thu, 20 Mar 2025 18:37:58 -0300
Subject: [PATCH] fix: preserve animation in GIF and WebP stickers

---
 .../whatsapp/whatsapp.baileys.service.ts      | 27 ++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/src/api/integrations/channel/whatsapp/whatsapp.baileys.service.ts b/src/api/integrations/channel/whatsapp/whatsapp.baileys.service.ts
index 10feb7ce..f5217060 100644
--- a/src/api/integrations/channel/whatsapp/whatsapp.baileys.service.ts
+++ b/src/api/integrations/channel/whatsapp/whatsapp.baileys.service.ts
@@ -2703,15 +2703,36 @@ export class BaileysStartupService extends ChannelStartupService {
         imageBuffer = Buffer.from(response.data, 'binary');
       }
 
-      const webpBuffer = await sharp(imageBuffer).webp().toBuffer();
-
-      return webpBuffer;
+      const isAnimated = image.includes('.gif') || 
+                         (image.includes('.webp') && this.isAnimatedWebp(imageBuffer));
+      
+      if (isAnimated) {
+        return await sharp(imageBuffer, { animated: true })
+          .webp({ quality: 80, animated: true })
+          .toBuffer();
+      } else {
+        return await sharp(imageBuffer).webp().toBuffer();
+      }
     } catch (error) {
       console.error('Erro ao converter a imagem para WebP:', error);
       throw error;
     }
   }
 
+  private isAnimatedWebp(buffer: Buffer): boolean {
+    if (buffer.length < 12) return false;
+    
+    for (let i = 0; i < buffer.length - 4; i++) {
+      if (buffer[i] === 0x41 && // 'A'
+          buffer[i + 1] === 0x4E && // 'N'
+          buffer[i + 2] === 0x49 && // 'I'
+          buffer[i + 3] === 0x4D) { // 'M'
+        return true;
+      }
+    }
+    return false;
+  }
+
   public async mediaSticker(data: SendStickerDto, file?: any) {
     const mediaData: SendStickerDto = { ...data };