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* Mass Send Service
* Handles mass WhatsApp message sending with tenant isolation
*
* @module services/MassSendService
*/
const { pool } = require('../config/database');
const { logger } = require('../config/logger');
const axios = require('axios');
class MassSendService {
constructor() {
this.activeProcesses = new Map();
this.io = null;
this.whatsappService = null;
}
/**
* Initialize service with Socket.IO and WhatsApp service
*/
initialize(io, whatsappService) {
this.io = io;
this.whatsappService = whatsappService;
this.startScheduleChecker();
this.startReminderChecker();
this.startCloudCampaignChecker();
logger.info('ā
Mass Send Service initialized');
}
/**
* Get contact name from database
*/
async getContactName(phoneNumber, tenantId) {
try {
const cleanPhone = phoneNumber.replace(/[^\d]/g, '');
const phoneVariations = [
cleanPhone,
cleanPhone.slice(-11),
cleanPhone.slice(-10),
cleanPhone.slice(-9),
];
// Try contacts table
for (const variation of phoneVariations) {
const [contacts] = await pool.execute(
`SELECT name FROM contacts
WHERE tenant_id = ? AND (
phone = ?
OR phone LIKE ?
OR phone LIKE ?
OR REPLACE(REPLACE(REPLACE(phone, '+', ''), '-', ''), ' ', '') = ?
)
LIMIT 1`,
[tenantId, variation, `%${variation}`, `%${variation}%`, variation]
);
if (contacts.length > 0 && contacts[0].name) {
return contacts[0].name;
}
}
// Try conversations table
for (const variation of phoneVariations) {
const [conversations] = await pool.execute(
`SELECT contact_name FROM conversations
WHERE tenant_id = ? AND (
phone_number = ?
OR phone_number LIKE ?
OR REPLACE(REPLACE(REPLACE(phone_number, '+', ''), '-', ''), ' ', '') = ?
)
LIMIT 1`,
[tenantId, variation, `%${variation}%`, variation]
);
if (conversations.length > 0 && conversations[0].contact_name) {
return conversations[0].contact_name;
}
}
return null;
} catch (error) {
logger.error('Error getting contact name:', error);
return null;
}
}
/**
* Process mass send from history
*/
async processMassSend(sendId, tenantId) {
try {
const [sends] = await pool.execute(
`SELECT * FROM mass_send_history
WHERE id = ? AND tenant_id = ? AND status IN ('pending', 'paused')`,
[sendId, tenantId]
);
if (sends.length === 0) {
logger.warn(`Mass send ${sendId} not found or not in valid status`);
return;
}
const send = sends[0];
const recipients = JSON.parse(send.recipients);
await pool.execute(
`UPDATE mass_send_history SET status = 'sending', started_at = NOW() WHERE id = ?`,
[sendId]
);
this.activeProcesses.set(sendId, { paused: false, cancelled: false });
const startIndex = send.sent_count || 0;
for (let i = startIndex; i < recipients.length; i++) {
const process = this.activeProcesses.get(sendId);
if (process.cancelled) {
await pool.execute(
`UPDATE mass_send_history SET status = 'cancelled', updated_at = NOW() WHERE id = ?`,
[sendId]
);
this.activeProcesses.delete(sendId);
return;
}
if (process.paused) {
await pool.execute(
`UPDATE mass_send_history SET status = 'paused', sent_count = ?, updated_at = NOW() WHERE id = ?`,
[i, sendId]
);
return;
}
const recipient = recipients[i];
const phoneNumber = recipient.phone || recipient;
const logId = await this.createLog('history', sendId, phoneNumber, send.message);
try {
await this.updateLogStatus(logId, 'sending');
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-progress', {
sendId,
type: 'history',
status: 'sending',
current: i + 1,
total: recipients.length,
phoneNumber
});
}
const messageToSend = await this.replacePlaceholders(send.message, recipient, phoneNumber, tenantId);
const result = await this.whatsappService.sendMessage(tenantId, phoneNumber, messageToSend);
if (!result || !result.success) {
throw new Error(result?.error || 'Failed to send message');
}
await this.updateLogStatus(logId, 'success');
await pool.execute(
`UPDATE mass_send_history SET sent_count = sent_count + 1 WHERE id = ?`,
[sendId]
);
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-progress', {
sendId,
type: 'history',
status: 'success',
current: i + 1,
total: recipients.length,
phoneNumber
});
}
if (i < recipients.length - 1) {
await this.sleep(send.send_interval * 1000);
}
} catch (error) {
logger.error(`Error sending to ${phoneNumber}:`, error);
await this.updateLogStatus(logId, 'failed', error.message);
await pool.execute(
`UPDATE mass_send_history SET failed_count = failed_count + 1 WHERE id = ?`,
[sendId]
);
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-progress', {
sendId,
type: 'history',
status: 'failed',
current: i + 1,
total: recipients.length,
phoneNumber,
error: error.message
});
}
}
}
await pool.execute(
`UPDATE mass_send_history SET status = 'completed', completed_at = NOW() WHERE id = ?`,
[sendId]
);
this.activeProcesses.delete(sendId);
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-complete', {
sendId,
type: 'history'
});
}
} catch (error) {
logger.error(`Error processing mass send ${sendId}:`, error);
await pool.execute(
`UPDATE mass_send_history SET status = 'failed', updated_at = NOW() WHERE id = ?`,
[sendId]
);
this.activeProcesses.delete(sendId);
}
}
/**
* Process scheduled send
*/
async processSchedule(scheduleId, tenantId) {
try {
const [schedules] = await pool.execute(
`SELECT * FROM mass_send_schedules
WHERE id = ? AND tenant_id = ? AND status = 'scheduled'`,
[scheduleId, tenantId]
);
if (schedules.length === 0) {
return;
}
const schedule = schedules[0];
const recipients = JSON.parse(schedule.recipients);
await pool.execute(
`UPDATE mass_send_schedules SET status = 'sending', started_at = NOW() WHERE id = ?`,
[scheduleId]
);
for (let i = 0; i < recipients.length; i++) {
const recipient = recipients[i];
const phoneNumber = recipient.phone || recipient;
const logId = await this.createLog('schedule', scheduleId, phoneNumber, schedule.message);
try {
await this.updateLogStatus(logId, 'sending');
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-progress', {
sendId: scheduleId,
type: 'schedule',
status: 'sending',
current: i + 1,
total: recipients.length,
phoneNumber
});
}
const messageToSend = await this.replacePlaceholders(schedule.message, recipient, phoneNumber, tenantId);
const result = await this.whatsappService.sendMessage(tenantId, phoneNumber, messageToSend);
if (!result || !result.success) {
throw new Error(result?.error || 'Failed to send message');
}
await this.updateLogStatus(logId, 'success');
await pool.execute(
`UPDATE mass_send_schedules SET sent_count = sent_count + 1 WHERE id = ?`,
[scheduleId]
);
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-progress', {
sendId: scheduleId,
type: 'schedule',
status: 'success',
current: i + 1,
total: recipients.length,
phoneNumber
});
}
if (i < recipients.length - 1) {
await this.sleep(schedule.send_interval * 1000);
}
} catch (error) {
logger.error(`Error sending scheduled message to ${phoneNumber}:`, error);
await this.updateLogStatus(logId, 'failed', error.message);
await pool.execute(
`UPDATE mass_send_schedules SET failed_count = failed_count + 1 WHERE id = ?`,
[scheduleId]
);
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-progress', {
sendId: scheduleId,
type: 'schedule',
status: 'failed',
current: i + 1,
total: recipients.length,
phoneNumber,
error: error.message
});
}
}
}
await pool.execute(
`UPDATE mass_send_schedules SET status = 'completed', completed_at = NOW() WHERE id = ?`,
[scheduleId]
);
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-complete', {
sendId: scheduleId,
type: 'schedule'
});
}
} catch (error) {
logger.error(`Error processing schedule ${scheduleId}:`, error);
await pool.execute(
`UPDATE mass_send_schedules SET status = 'failed', updated_at = NOW() WHERE id = ?`,
[scheduleId]
);
}
}
/**
* Process reminder send
*/
async processReminder(reminderId, tenantId) {
try {
const [reminders] = await pool.execute(
`SELECT * FROM mass_send_reminders
WHERE id = ? AND tenant_id = ? AND status = 'active'`,
[reminderId, tenantId]
);
if (reminders.length === 0) {
return;
}
const reminder = reminders[0];
const recipients = JSON.parse(reminder.recipients);
const reminderDates = JSON.parse(reminder.reminder_dates);
const finalDate = new Date(reminder.final_date);
const now = new Date();
const daysRemaining = Math.ceil((finalDate - now) / (1000 * 60 * 60 * 24));
for (let i = 0; i < recipients.length; i++) {
const recipient = recipients[i];
const phoneNumber = recipient.phone || recipient;
const logId = await this.createLog('reminder', reminderId, phoneNumber, reminder.message);
try {
await this.updateLogStatus(logId, 'sending');
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-progress', {
sendId: reminderId,
type: 'reminder',
status: 'sending',
current: i + 1,
total: recipients.length,
phoneNumber
});
}
let messageToSend = await this.replacePlaceholders(reminder.message, recipient, phoneNumber, tenantId);
messageToSend = messageToSend.replace(/{remaining-days}/g, daysRemaining);
const result = await this.whatsappService.sendMessage(tenantId, phoneNumber, messageToSend);
if (!result || !result.success) {
throw new Error(result?.error || 'Failed to send message');
}
await this.updateLogStatus(logId, 'success');
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-progress', {
sendId: reminderId,
type: 'reminder',
status: 'success',
current: i + 1,
total: recipients.length,
phoneNumber
});
}
if (i < recipients.length - 1) {
await this.sleep(reminder.send_interval * 1000);
}
} catch (error) {
logger.error(`Error sending reminder to ${phoneNumber}:`, error);
await this.updateLogStatus(logId, 'failed', error.message);
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-progress', {
sendId: reminderId,
type: 'reminder',
status: 'failed',
current: i + 1,
total: recipients.length,
phoneNumber,
error: error.message
});
}
}
}
await pool.execute(
`UPDATE mass_send_reminders
SET last_sent_at = NOW(), total_sent = total_sent + ?
WHERE id = ?`,
[recipients.length, reminderId]
);
const currentDateIndex = reminderDates.findIndex(rd => {
const sendDateTime = new Date(rd.send_datetime || rd.send_date);
const nowTime = now.getTime();
const sendTime = sendDateTime.getTime();
return Math.abs(nowTime - sendTime) < 3600000;
});
if (currentDateIndex >= 0 && currentDateIndex < reminderDates.length - 1) {
const nextReminderData = reminderDates[currentDateIndex + 1];
const nextDate = new Date(nextReminderData.send_datetime || nextReminderData.send_date);
await pool.execute(
`UPDATE mass_send_reminders SET next_send_at = ? WHERE id = ?`,
[nextDate, reminderId]
);
} else {
await pool.execute(
`UPDATE mass_send_reminders SET status = 'completed', next_send_at = NULL WHERE id = ?`,
[reminderId]
);
}
if (this.io) {
this.io.to(`tenant_${tenantId}`).emit('mass-send-complete', {
sendId: reminderId,
type: 'reminder'
});
}
} catch (error) {
logger.error(`Error processing reminder ${reminderId}:`, error);
}
}
/**
* Pause mass send
*/
pauseSend(sendId) {
const process = this.activeProcesses.get(sendId);
if (process) {
process.paused = true;
return true;
}
return false;
}
/**
* Cancel mass send
*/
cancelSend(sendId) {
const process = this.activeProcesses.get(sendId);
if (process) {
process.cancelled = true;
return true;
}
return false;
}
/**
* Create log entry
*/
async createLog(sendType, sendId, phoneNumber, message) {
const [result] = await pool.execute(
`INSERT INTO mass_send_logs (send_type, send_id, phone_number, message, status)
VALUES (?, ?, ?, ?, 'pending')`,
[sendType, sendId, phoneNumber, message]
);
return result.insertId;
}
/**
* Update log status
*/
async updateLogStatus(logId, status, errorMessage = null) {
await pool.execute(
`UPDATE mass_send_logs
SET status = ?, error_message = ?, sent_at = NOW()
WHERE id = ?`,
[status, errorMessage, logId]
);
}
/**
* Replace placeholders in message
*/
async replacePlaceholders(message, recipient, phoneNumber, tenantId) {
if (!message) return '';
let result = message;
const now = new Date();
// Replace recipient-specific placeholders (single braces)
if (typeof recipient === 'object') {
Object.keys(recipient).forEach(key => {
const placeholder = `{${key}}`;
const value = recipient[key];
if (value !== undefined && value !== null) {
result = result.replace(new RegExp(placeholder.replace(/[{}]/g, '\\$&'), 'g'), value);
}
});
}
// Get contact name
const contactName = await this.getContactName(phoneNumber, tenantId);
const displayName = contactName || 'Cliente';
// Replace standard placeholders (double braces)
const placeholders = {
'{{customer_name}}': displayName,
'{{phone_number}}': phoneNumber || '',
'{{date}}': now.toLocaleDateString(),
'{{current_date}}': now.toLocaleDateString(),
'{{time}}': now.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' }),
'{{current_time}}': now.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' }),
'{{day}}': now.toLocaleDateString([], { weekday: 'long' }),
'{{month}}': now.toLocaleDateString([], { month: 'long' }),
'{{year}}': now.getFullYear().toString()
};
for (const [placeholder, value] of Object.entries(placeholders)) {
result = result.replace(new RegExp(placeholder.replace(/[{}]/g, '\\$&'), 'g'), value);
}
// Replace WooCommerce product placeholders {{product_X}}
const productMatches = result.match(/\{\{product_(\d+)\}\}/g);
if (productMatches) {
try {
for (const match of productMatches) {
const wcProductId = parseInt(match.match(/\d+/)[0]);
const [products] = await pool.execute(
'SELECT * FROM woocommerce_products WHERE tenant_id = ? AND wc_product_id = ? AND is_active = TRUE LIMIT 1',
[tenantId, wcProductId]
);
if (products.length > 0) {
const product = products[0];
const price = product.sale_price || product.regular_price || product.price;
const priceText = price ? `R$ ${parseFloat(price).toFixed(2).replace('.', ',')}` : 'Consulte';
const productText = `šļø *${product.name}*\n\n${product.short_description || ''}\n\nš° ${priceText}\n\nš ${product.permalink}`;
result = result.replace(
new RegExp(match.replace(/[{}]/g, '\\$&'), 'g'),
productText
);
} else {
result = result.replace(
new RegExp(match.replace(/[{}]/g, '\\$&'), 'g'),
'[Product not found]'
);
}
}
} catch (error) {
logger.error('Error fetching products for mass send:', error);
}
}
return result;
}
/**
* Sleep utility
*/
sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
normalizePhone(value) {
return String(value || '').replace(/[^\d]/g, '');
}
parseAudienceNumbers(input) {
if (Array.isArray(input)) {
return input.map(item => String(item || '')).filter(item => item.trim().length > 0);
}
if (typeof input === 'string') {
return input.split(/\r?\n/).map(item => item.trim()).filter(item => item.length > 0);
}
return [];
}
parseJson(value, fallback) {
try {
if (value === null || value === undefined || value === '') {
return fallback;
}
if (typeof value === 'string') {
return JSON.parse(value);
}
return value;
} catch (error) {
return fallback;
}
}
async getCloudCampaignRecipients({ tenantId, audienceType, audienceGroups, audienceCustomNumbers }) {
const recipients = [];
if (audienceType === 'custom') {
const numbers = this.parseAudienceNumbers(audienceCustomNumbers);
const seen = new Set();
numbers.forEach(number => {
const normalized = this.normalizePhone(number);
if (!normalized || seen.has(normalized)) return;
seen.add(normalized);
recipients.push({ phone: normalized, name: normalized });
});
return recipients;
}
let query = `SELECT name, phone FROM contacts WHERE tenant_id = ? AND phone IS NOT NULL AND phone <> ''`;
const params = [tenantId];
if (audienceType === 'groups') {
const groupList = Array.isArray(audienceGroups) ? audienceGroups : [];
if (!groupList.length) {
return [];
}
const placeholders = groupList.map(() => '?').join(', ');
query += ` AND group_id IN (${placeholders})`;
params.push(...groupList);
}
const [rows] = await pool.execute(query, params);
const seen = new Set();
rows.forEach(row => {
const normalized = this.normalizePhone(row.phone);
if (!normalized || seen.has(normalized)) return;
seen.add(normalized);
recipients.push({ phone: normalized, name: row.name || normalized });
});
return recipients;
}
async ensureCloudConversation({ tenantId, accountId, contactPhone, contactName }) {
const [existing] = await pool.execute(
'SELECT id FROM whatsapp_cloud_conversations WHERE account_id = ? AND contact_phone = ?',
[accountId, contactPhone]
);
if (existing.length > 0) {
return existing[0].id;
}
try {
const [result] = await pool.execute(
`INSERT INTO whatsapp_cloud_conversations
(tenant_id, account_id, contact_phone, contact_name, last_message_text, last_message_time, last_message_from, unread_count, status, created_at, updated_at)
VALUES (?, ?, ?, ?, NULL, NOW(), 'business', 0, 'open', NOW(), NOW())`,
[tenantId, accountId, contactPhone, contactName || contactPhone]
);
return result.insertId;
} catch (error) {
const [existingRetry] = await pool.execute(
'SELECT id FROM whatsapp_cloud_conversations WHERE account_id = ? AND contact_phone = ?',
[accountId, contactPhone]
);
if (existingRetry.length > 0) {
return existingRetry[0].id;
}
throw error;
}
}
async processCloudCampaign(campaignId, tenantId) {
try {
const [lock] = await pool.execute(
`UPDATE whatsapp_cloud_campaigns
SET status = 'sending', updated_at = NOW()
WHERE id = ? AND tenant_id = ? AND status = 'scheduled'`,
[campaignId, tenantId]
);
if (lock.affectedRows === 0) {
return;
}
const [campaignRows] = await pool.execute(
`SELECT * FROM whatsapp_cloud_campaigns WHERE id = ? AND tenant_id = ?`,
[campaignId, tenantId]
);
if (campaignRows.length === 0) {
return;
}
const campaign = campaignRows[0];
const [accounts] = await pool.execute(
'SELECT id, access_token, phone_number_id FROM whatsapp_cloud_accounts WHERE id = ? AND tenant_id = ?',
[campaign.account_id, tenantId]
);
if (accounts.length === 0 || !accounts[0].access_token || !accounts[0].phone_number_id) {
await pool.execute(
`UPDATE whatsapp_cloud_campaigns SET status = 'failed', error_message = 'Account not found', updated_at = NOW() WHERE id = ?`,
[campaignId]
);
return;
}
const [templates] = await pool.execute(
`SELECT template_id, name, language
FROM whatsapp_cloud_templates
WHERE tenant_id = ? AND account_id = ? AND template_id = ?
LIMIT 1`,
[tenantId, campaign.account_id, campaign.template_id]
);
if (templates.length === 0) {
await pool.execute(
`UPDATE whatsapp_cloud_campaigns SET status = 'failed', error_message = 'Template not found', updated_at = NOW() WHERE id = ?`,
[campaignId]
);
return;
}
const template = templates[0];
const languageCode = template.language || 'en';
const audienceGroups = this.parseJson(campaign.audience_groups, []);
const audienceCustomNumbers = this.parseJson(campaign.audience_custom_numbers, []);
const recipients = await this.getCloudCampaignRecipients({
tenantId,
audienceType: campaign.audience_type,
audienceGroups,
audienceCustomNumbers
});
if (recipients.length === 0) {
await pool.execute(
`UPDATE whatsapp_cloud_campaigns SET status = 'failed', total_count = 0, error_message = 'No recipients', updated_at = NOW() WHERE id = ?`,
[campaignId]
);
return;
}
await pool.execute(
`UPDATE whatsapp_cloud_campaigns SET total_count = ?, updated_at = NOW() WHERE id = ?`,
[recipients.length, campaignId]
);
let sent = 0;
let failed = 0;
for (const recipient of recipients) {
const contactPhone = recipient.phone;
if (!contactPhone) {
failed += 1;
continue;
}
const payload = {
messaging_product: 'whatsapp',
to: contactPhone,
type: 'template',
template: {
name: template.name,
language: { code: languageCode }
}
};
try {
const response = await axios.post(
`https://graph.facebook.com/v18.0/${accounts[0].phone_number_id}/messages`,
payload,
{
headers: {
'Authorization': `Bearer ${accounts[0].access_token}`,
'Content-Type': 'application/json'
}
}
);
const messageId = response?.data?.messages?.[0]?.id || `campaign_${Date.now()}`;
const conversationId = await this.ensureCloudConversation({
tenantId,
accountId: accounts[0].id,
contactPhone,
contactName: recipient.name || contactPhone
});
await pool.execute(
`INSERT INTO whatsapp_cloud_messages
(conversation_id, message_id, direction, message_type, text_content, status, timestamp, created_at)
VALUES (?, ?, 'outbound', 'template', ?, 'sent', NOW(), NOW())`,
[conversationId, messageId, template.name]
);
await pool.execute(
`UPDATE whatsapp_cloud_conversations
SET last_message_text = ?, last_message_time = NOW(), last_message_from = 'business', updated_at = NOW()
WHERE id = ?`,
[template.name, conversationId]
);
sent += 1;
} catch (error) {
failed += 1;
}
}
const status = failed >= recipients.length ? 'failed' : 'sent';
await pool.execute(
`UPDATE whatsapp_cloud_campaigns
SET status = ?, sent_count = ?, failed_count = ?, updated_at = NOW()
WHERE id = ?`,
[status, sent, failed, campaignId]
);
} catch (error) {
logger.error('Error processing cloud campaign', { error: error.message });
await pool.execute(
`UPDATE whatsapp_cloud_campaigns SET status = 'failed', error_message = ?, updated_at = NOW() WHERE id = ?`,
[error.message, campaignId]
);
}
}
/**
* Start schedule checker (runs every minute)
*/
startScheduleChecker() {
setInterval(async () => {
try {
const [schedules] = await pool.execute(
`SELECT id, tenant_id FROM mass_send_schedules
WHERE status = 'scheduled' AND scheduled_date <= NOW()`
);
for (const schedule of schedules) {
this.processSchedule(schedule.id, schedule.tenant_id);
}
} catch (error) {
logger.error('Error checking schedules:', error);
}
}, 60000);
}
startCloudCampaignChecker() {
setInterval(async () => {
try {
const [campaigns] = await pool.execute(
`SELECT id, tenant_id FROM whatsapp_cloud_campaigns
WHERE status = 'scheduled' AND schedule_at <= NOW()`
);
for (const campaign of campaigns) {
this.processCloudCampaign(campaign.id, campaign.tenant_id);
}
} catch (error) {
logger.error('Error checking cloud campaigns:', error);
}
}, 60000);
}
/**
* Start reminder checker (runs every minute)
*/
startReminderChecker() {
setInterval(async () => {
try {
const [reminders] = await pool.execute(
`SELECT id, tenant_id FROM mass_send_reminders
WHERE status = 'active'
AND next_send_at <= NOW()
AND next_send_at >= DATE_SUB(NOW(), INTERVAL 5 MINUTE)`
);
for (const reminder of reminders) {
this.processReminder(reminder.id, reminder.tenant_id);
}
} catch (error) {
logger.error('Error checking reminders:', error);
}
}, 60000);
}
}
module.exports = new MassSendService();
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