Add SQLite database layer
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import { dirname } from 'node:path';
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import { mkdirSync } from 'node:fs';
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import Database from 'better-sqlite3';
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import { nanoid } from 'nanoid';
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import { config } from './config.js';
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mkdirSync(dirname(config.db.path), { recursive: true });
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export const db = new Database(config.db.path);
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db.pragma('journal_mode = WAL');
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db.pragma('foreign_keys = ON');
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export function migrate() {
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db.exec(`
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CREATE TABLE IF NOT EXISTS sites (
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id TEXT PRIMARY KEY,
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name TEXT NOT NULL,
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domain TEXT NOT NULL,
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widget_key TEXT NOT NULL UNIQUE,
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is_active INTEGER NOT NULL DEFAULT 1,
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created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
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updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
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);
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CREATE TABLE IF NOT EXISTS operators (
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id TEXT PRIMARY KEY,
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name TEXT NOT NULL,
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telegram_user_id TEXT UNIQUE,
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telegram_username TEXT,
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is_active INTEGER NOT NULL DEFAULT 1,
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created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
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updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
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);
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CREATE TABLE IF NOT EXISTS site_operators (
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site_id TEXT NOT NULL,
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operator_id TEXT NOT NULL,
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created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
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PRIMARY KEY (site_id, operator_id),
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FOREIGN KEY (site_id) REFERENCES sites(id) ON DELETE CASCADE,
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FOREIGN KEY (operator_id) REFERENCES operators(id) ON DELETE CASCADE
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);
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CREATE TABLE IF NOT EXISTS visitors (
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id TEXT PRIMARY KEY,
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site_id TEXT NOT NULL,
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visitor_key TEXT NOT NULL,
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first_seen_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
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last_seen_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
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user_agent TEXT,
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ip TEXT,
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UNIQUE(site_id, visitor_key),
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FOREIGN KEY (site_id) REFERENCES sites(id) ON DELETE CASCADE
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);
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CREATE TABLE IF NOT EXISTS conversations (
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id TEXT PRIMARY KEY,
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site_id TEXT NOT NULL,
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visitor_id TEXT NOT NULL,
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status TEXT NOT NULL DEFAULT 'open',
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assigned_operator_id TEXT,
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created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
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updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
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FOREIGN KEY (site_id) REFERENCES sites(id) ON DELETE CASCADE,
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FOREIGN KEY (visitor_id) REFERENCES visitors(id) ON DELETE CASCADE,
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FOREIGN KEY (assigned_operator_id) REFERENCES operators(id) ON DELETE SET NULL
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);
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CREATE TABLE IF NOT EXISTS messages (
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id TEXT PRIMARY KEY,
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conversation_id TEXT NOT NULL,
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site_id TEXT NOT NULL,
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visitor_id TEXT,
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operator_id TEXT,
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direction TEXT NOT NULL CHECK(direction IN ('visitor','operator','system')),
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body TEXT NOT NULL,
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transport TEXT NOT NULL DEFAULT 'web',
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telegram_message_id TEXT,
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created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
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FOREIGN KEY (conversation_id) REFERENCES conversations(id) ON DELETE CASCADE,
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FOREIGN KEY (site_id) REFERENCES sites(id) ON DELETE CASCADE,
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FOREIGN KEY (visitor_id) REFERENCES visitors(id) ON DELETE SET NULL,
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FOREIGN KEY (operator_id) REFERENCES operators(id) ON DELETE SET NULL
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);
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CREATE TABLE IF NOT EXISTS settings (
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key TEXT PRIMARY KEY,
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value TEXT NOT NULL,
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updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
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);
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CREATE INDEX IF NOT EXISTS idx_visitors_site_key ON visitors(site_id, visitor_key);
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CREATE INDEX IF NOT EXISTS idx_conversations_site_status ON conversations(site_id, status);
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CREATE INDEX IF NOT EXISTS idx_messages_conversation_created ON messages(conversation_id, created_at);
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CREATE INDEX IF NOT EXISTS idx_messages_site_created ON messages(site_id, created_at);
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`);
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ensureDefaultSite();
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}
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export function ensureDefaultSite() {
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const existing = db.prepare('SELECT id FROM sites WHERE id = ?').get('site_default');
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if (existing) return existing.id;
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db.prepare(`
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INSERT INTO sites (id, name, domain, widget_key)
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VALUES (?, ?, ?, ?)
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`).run('site_default', 'Default site', config.cors.widgetOrigin.replace(/^https?:\/\//, ''), 'site_default');
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return 'site_default';
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}
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export function getSiteByWidgetKey(widgetKey) {
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return db.prepare(`
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SELECT * FROM sites WHERE widget_key = ? AND is_active = 1
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`).get(widgetKey);
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}
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export function touchVisitor({ siteId, visitorKey, userAgent, ip }) {
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const existing = db.prepare(`
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SELECT * FROM visitors WHERE site_id = ? AND visitor_key = ?
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`).get(siteId, visitorKey);
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if (existing) {
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db.prepare(`
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UPDATE visitors
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SET last_seen_at = CURRENT_TIMESTAMP, user_agent = COALESCE(?, user_agent), ip = COALESCE(?, ip)
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WHERE id = ?
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`).run(userAgent || null, ip || null, existing.id);
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return existing;
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}
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const id = `visitor_${nanoid(12)}`;
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db.prepare(`
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INSERT INTO visitors (id, site_id, visitor_key, user_agent, ip)
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VALUES (?, ?, ?, ?, ?)
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`).run(id, siteId, visitorKey, userAgent || null, ip || null);
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return db.prepare('SELECT * FROM visitors WHERE id = ?').get(id);
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}
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export function getOrCreateOpenConversation({ siteId, visitorId }) {
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const existing = db.prepare(`
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SELECT * FROM conversations
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WHERE site_id = ? AND visitor_id = ? AND status = 'open'
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ORDER BY created_at DESC
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LIMIT 1
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`).get(siteId, visitorId);
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if (existing) return existing;
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const id = `conv_${nanoid(12)}`;
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db.prepare(`
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INSERT INTO conversations (id, site_id, visitor_id)
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VALUES (?, ?, ?)
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`).run(id, siteId, visitorId);
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return db.prepare('SELECT * FROM conversations WHERE id = ?').get(id);
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}
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export function createVisitorMessage({ conversationId, siteId, visitorId, body }) {
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const id = `msg_${nanoid(14)}`;
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db.prepare(`
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INSERT INTO messages (id, conversation_id, site_id, visitor_id, direction, body, transport)
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VALUES (?, ?, ?, ?, 'visitor', ?, 'web')
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`).run(id, conversationId, siteId, visitorId, body);
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db.prepare(`
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UPDATE conversations SET updated_at = CURRENT_TIMESTAMP WHERE id = ?
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`).run(conversationId);
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return db.prepare('SELECT * FROM messages WHERE id = ?').get(id);
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}
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export function listRecentMessages(limit = 50) {
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return db.prepare(`
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SELECT
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messages.*,
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sites.name AS site_name,
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sites.domain AS site_domain,
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visitors.visitor_key
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FROM messages
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JOIN sites ON sites.id = messages.site_id
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LEFT JOIN visitors ON visitors.id = messages.visitor_id
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ORDER BY messages.created_at DESC
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LIMIT ?
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`).all(limit);
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}
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export function getStats() {
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const siteCount = db.prepare('SELECT COUNT(*) AS count FROM sites').get().count;
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const visitorCount = db.prepare('SELECT COUNT(*) AS count FROM visitors').get().count;
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const conversationCount = db.prepare('SELECT COUNT(*) AS count FROM conversations').get().count;
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const messageCount = db.prepare('SELECT COUNT(*) AS count FROM messages').get().count;
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const openConversationCount = db.prepare("SELECT COUNT(*) AS count FROM conversations WHERE status = 'open'").get().count;
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return {
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sites: siteCount,
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visitors: visitorCount,
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conversations: conversationCount,
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openConversations: openConversationCount,
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messages: messageCount
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};
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}
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