Fix: Envío de eventos usando proto directo (bypass sendMessage)

Baileys no maneja 'event' en generateWAMessageContent, causando
"Invalid media type" error. Se usa generateWAMessageFromContent
con proto.Message.IEventMessage y relayMessage directamente.

server/api/messages/[instanceId]/[chatId]/send.post.ts

@@ -6,6 +6,7 @@
  * - Stickers: image converted to WebP (FormData with asSticker flag)
  */
 import type { AnyMediaMessageContent } from '@whiskeysockets/baileys'
+import { generateWAMessageFromContent, proto } from '@whiskeysockets/baileys'
 import { query } from '../../../../utils/database'
 import { baileysManager } from '../../../../services/baileys/manager'
 import { convertToSticker, canConvertToSticker } from '../../../../services/media/sticker-processor'
@@ -358,6 +359,8 @@ async function handlePollMessage(
 
 /**
  * Handle event message sending
+ * Note: Baileys' sendMessage doesn't handle 'event' type directly,
+ * so we build the proto message manually and use relayMessage
  */
 async function handleEventMessage(
   body: EventMessageBody,
@@ -375,33 +378,48 @@ async function handleEventMessage(
     throw createError({ statusCode: 400, message: 'Event start date is required' })
   }
 
-  const eventContent: any = {
+  // Build the eventMessage proto directly
+  const eventMessage: proto.Message.IEventMessage = {
     name: body.name,
-    startDate: new Date(body.startDate)
+    startTime: Math.floor(new Date(body.startDate).getTime() / 1000),
+    description: body.description || undefined,
+    extraGuestsAllowed: true
   }
 
   if (body.endDate) {
-    eventContent.endDate = new Date(body.endDate)
+    eventMessage.endTime = Math.floor(new Date(body.endDate).getTime() / 1000)
   }
 
-  if (body.description) {
+  if (body.location && body.location.latitude && body.location.longitude) {
-    eventContent.description = body.description
+    eventMessage.location = {
-  }
-
-  if (body.location) {
-    if (body.location.latitude && body.location.longitude) {
-      eventContent.location = {
       degreesLatitude: body.location.latitude,
       degreesLongitude: body.location.longitude,
-        name: body.location.name,
+      name: body.location.name || undefined,
-        address: body.location.address
+      address: body.location.address || undefined
-      }
     }
   }
 
-  const content = { event: eventContent }
+  // Create the message content with eventMessage
+  const messageContent: proto.IMessage = {
+    eventMessage
+  }
 
-  const result = await socket.sendMessage(jid, content, options)
+  // Generate the full WAMessage using generateWAMessageFromContent
+  const userJid = socket.user?.id
+  const generatedMessage = generateWAMessageFromContent(
+    jid,
+    messageContent,
+    {
+      userJid,
+      quoted: options.quoted,
+      timestamp: new Date()
+    }
+  )
+
+  // Use relayMessage to send the pre-built message
+  await socket.relayMessage(jid, generatedMessage.message!, {
+    messageId: generatedMessage.key.id
+  })
 
   // Save to database
   await query(
@@ -413,7 +431,7 @@ async function handleEventMessage(
     [
       instanceId,
       chatId,
-      result.key.id,
+      generatedMessage.key.id,
       'me',
       true,
       'event',
@@ -425,7 +443,7 @@ async function handleEventMessage(
         location: body.location
       }),
       'sent',
-      JSON.stringify(result),
+      JSON.stringify(generatedMessage),
       body.quotedMessageId || null
     ]
   )
@@ -437,7 +455,7 @@ async function handleEventMessage(
 
   return {
     success: true,
-    messages: [{ messageId: result.key.id, type: 'event' }]
+    messages: [{ messageId: generatedMessage.key.id, type: 'event' }]
   }
 }