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Fix WhatsApp long message splitting

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Hedirman 2026-05-04 06:54:18 +08:00 • committed by Teknium
parent 4d32f40306
commit a9ebee5f02
3 changed files with 122 additions and 18 deletions
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85
scripts/whatsapp-bridge/bridge.js
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@ -55,6 +55,12 @@ const DEFAULT_REPLY_PREFIX = '⚕ *Hermes Agent*\n──────────
const REPLY_PREFIX = process.env.WHATSAPP_REPLY_PREFIX === undefined
? DEFAULT_REPLY_PREFIX
: process.env.WHATSAPP_REPLY_PREFIX.replace(/\\n/g, '\n');
const MAX_MESSAGE_LENGTH = parseInt(process.env.WHATSAPP_MAX_MESSAGE_LENGTH || '4096', 10);
const CHUNK_DELAY_MS = parseInt(process.env.WHATSAPP_CHUNK_DELAY_MS || '300', 10);
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
function formatOutgoingMessage(message) {
// In bot mode, messages come from a different number so the prefix is
@ -64,6 +70,38 @@ function formatOutgoingMessage(message) {
return REPLY_PREFIX ? `${REPLY_PREFIX}${message}` : message;
}
function splitLongMessage(message, maxLength = MAX_MESSAGE_LENGTH) {
const text = String(message || '');
if (!text) return [];
if (!Number.isFinite(maxLength) || maxLength < 1 || text.length <= maxLength) {
return [text];
}
const chunks = [];
let remaining = text;
while (remaining.length > maxLength) {
let splitAt = remaining.lastIndexOf('\n', maxLength);
if (splitAt < Math.floor(maxLength / 2)) {
splitAt = remaining.lastIndexOf(' ', maxLength);
}
if (splitAt < 1) splitAt = maxLength;
chunks.push(remaining.slice(0, splitAt).trimEnd());
remaining = remaining.slice(splitAt).trimStart();
}
if (remaining) chunks.push(remaining);
return chunks;
}
function trackSentMessageId(sent) {
if (sent?.key?.id) {
recentlySentIds.add(sent.key.id);
if (recentlySentIds.size > MAX_RECENT_IDS) {
recentlySentIds.delete(recentlySentIds.values().next().value);
}
}
}
function normalizeWhatsAppId(value) {
if (!value) return '';
return String(value).replace(':', '@');
@ -423,17 +461,22 @@ app.post('/send', async (req, res) => {
}
try {
const sent = await sock.sendMessage(chatId, { text: formatOutgoingMessage(message) });
// Track sent message ID to prevent echo-back loops
if (sent?.key?.id) {
recentlySentIds.add(sent.key.id);
if (recentlySentIds.size > MAX_RECENT_IDS) {
recentlySentIds.delete(recentlySentIds.values().next().value);
const chunks = splitLongMessage(formatOutgoingMessage(message));
const messageIds = [];
for (let i = 0; i < chunks.length; i += 1) {
const sent = await sock.sendMessage(chatId, { text: chunks[i] });
trackSentMessageId(sent);
if (sent?.key?.id) messageIds.push(sent.key.id);
if (chunks.length > 1 && i < chunks.length - 1) {
await sleep(CHUNK_DELAY_MS);
}
}
res.json({ success: true, messageId: sent?.key?.id });
res.json({
success: true,
messageId: messageIds[messageIds.length - 1],
messageIds,
});
} catch (err) {
res.status(500).json({ error: err.message });
}
@ -452,8 +495,22 @@ app.post('/edit', async (req, res) => {
try {
const key = { id: messageId, fromMe: true, remoteJid: chatId };
await sock.sendMessage(chatId, { text: formatOutgoingMessage(message), edit: key });
res.json({ success: true });
const chunks = splitLongMessage(formatOutgoingMessage(message));
const messageIds = [];
await sock.sendMessage(chatId, { text: chunks[0], edit: key });
if (chunks.length > 1) {
for (let i = 1; i < chunks.length; i += 1) {
const sent = await sock.sendMessage(chatId, { text: chunks[i] });
trackSentMessageId(sent);
if (sent?.key?.id) messageIds.push(sent.key.id);
if (i < chunks.length - 1) {
await sleep(CHUNK_DELAY_MS);
}
}
}
res.json({ success: true, messageIds });
} catch (err) {
res.status(500).json({ error: err.message });
}
@ -547,13 +604,7 @@ app.post('/send-media', async (req, res) => {
const sent = await sock.sendMessage(chatId, msgPayload);
// Track sent message ID to prevent echo-back loops
if (sent?.key?.id) {
recentlySentIds.add(sent.key.id);
if (recentlySentIds.size > MAX_RECENT_IDS) {
recentlySentIds.delete(recentlySentIds.values().next().value);
}
}
trackSentMessageId(sent);
res.json({ success: true, messageId: sent?.key?.id });
} catch (err) {