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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 | /** * WhatsAppStateManager * Manages WhatsApp session state with tenant isolation * * @module services/whatsapp/WhatsAppStateManager */ const fs = require('fs'); const path = require('path'); const { logger } = require('../../config/logger'); class WhatsAppStateManager { constructor(baseSessionPath) { this.baseSessionPath = baseSessionPath || path.join(__dirname, '../../sessions'); this.ensureBaseDirectory(); } /** * Ensure base sessions directory exists */ ensureBaseDirectory() { if (!fs.existsSync(this.baseSessionPath)) { fs.mkdirSync(this.baseSessionPath, { recursive: true }); logger.info('Base sessions directory created', { path: this.baseSessionPath }); } } /** * Get tenant-specific session path * @param {number} tenantId - Tenant ID * @returns {string} Session path for tenant */ getTenantSessionPath(tenantId) { const basePath = path.join(this.baseSessionPath, `tenant_${tenantId}`); const nestedPath = path.join(basePath, `tenant_${tenantId}`); const nestedCreds = path.join(nestedPath, 'creds.json'); if (fs.existsSync(nestedCreds)) { return nestedPath; } return basePath; } /** * Ensure tenant session directory exists * @param {number} tenantId - Tenant ID */ ensureTenantSessionDirectory(tenantId) { const sessionPath = this.getTenantSessionPath(tenantId); if (!fs.existsSync(sessionPath)) { fs.mkdirSync(sessionPath, { recursive: true }); logger.info('Tenant session directory created', { tenantId, path: sessionPath }); } } /** * Check if tenant has saved session * @param {number} tenantId - Tenant ID * @returns {boolean} True if session exists */ hasSession(tenantId) { const sessionPath = this.getTenantSessionPath(tenantId); const credsPath = path.join(sessionPath, 'creds.json'); if (fs.existsSync(credsPath)) { return true; } const nestedPath = path.join(this.baseSessionPath, `tenant_${tenantId}`, `tenant_${tenantId}`); const nestedCreds = path.join(nestedPath, 'creds.json'); return fs.existsSync(nestedCreds); } /** * Clear tenant session * @param {number} tenantId - Tenant ID * @returns {boolean} Success status */ clearSession(tenantId) { try { const sessionPath = this.getTenantSessionPath(tenantId); if (fs.existsSync(sessionPath)) { const files = fs.readdirSync(sessionPath); files.forEach(file => { const filePath = path.join(sessionPath, file); if (fs.lstatSync(filePath).isDirectory()) { fs.rmSync(filePath, { recursive: true, force: true }); } else { fs.unlinkSync(filePath); } }); logger.info('Tenant session cleared', { tenantId }); return true; } return false; } catch (error) { logger.error('Error clearing tenant session', { tenantId, error: error.message }); return false; } } /** * Backup tenant session * @param {number} tenantId - Tenant ID * @returns {boolean} Success status */ backupSession(tenantId) { try { const sessionPath = this.getTenantSessionPath(tenantId); const backupPath = path.join( this.baseSessionPath, `tenant_${tenantId}_backup_${Date.now()}` ); if (!fs.existsSync(sessionPath)) { logger.warn('No session to backup', { tenantId }); return false; } fs.mkdirSync(backupPath, { recursive: true }); const files = fs.readdirSync(sessionPath); files.forEach(file => { const srcPath = path.join(sessionPath, file); const destPath = path.join(backupPath, file); if (fs.lstatSync(srcPath).isDirectory()) { fs.cpSync(srcPath, destPath, { recursive: true }); } else { fs.copyFileSync(srcPath, destPath); } }); logger.info('Tenant session backed up', { tenantId, backupPath }); return true; } catch (error) { logger.error('Error backing up tenant session', { tenantId, error: error.message }); return false; } } /** * Get tenant session info * @param {number} tenantId - Tenant ID * @returns {Object} Session info */ getSessionInfo(tenantId) { try { const sessionPath = this.getTenantSessionPath(tenantId); const credsPath = path.join(sessionPath, 'creds.json'); if (!fs.existsSync(credsPath)) { return { exists: false, tenantId, createdAt: null, size: 0 }; } const stats = fs.statSync(credsPath); return { exists: true, tenantId, createdAt: stats.mtime, size: stats.size, path: sessionPath }; } catch (error) { logger.error('Error getting tenant session info', { tenantId, error: error.message }); return { exists: false, tenantId, error: error.message }; } } /** * Clean old backup sessions * @param {number} daysToKeep - Days to keep backups * @returns {number} Number of cleaned backups */ cleanOldBackups(daysToKeep = 7) { try { const files = fs.readdirSync(this.baseSessionPath); const backupDirs = files.filter(f => f.includes('_backup_')); const now = Date.now(); const maxAge = daysToKeep * 24 * 60 * 60 * 1000; let cleaned = 0; backupDirs.forEach(dir => { const match = dir.match(/_backup_(\d+)$/); if (match) { const timestamp = parseInt(match[1]); const age = now - timestamp; if (age > maxAge) { const fullPath = path.join(this.baseSessionPath, dir); fs.rmSync(fullPath, { recursive: true, force: true }); cleaned++; logger.info('Old backup cleaned', { dir, ageInDays: Math.floor(age / (24 * 60 * 60 * 1000)) }); } } }); if (cleaned > 0) { logger.info('Backup cleanup completed', { cleaned }); } return cleaned; } catch (error) { logger.error('Error cleaning old backups', { error: error.message }); return 0; } } /** * Get all tenant sessions * @returns {Array} Array of tenant IDs with sessions */ getAllTenantSessions() { try { const files = fs.readdirSync(this.baseSessionPath); const tenantDirs = files.filter(f => f.startsWith('tenant_') && !f.includes('_backup_')); return tenantDirs.map(dir => { const match = dir.match(/^tenant_(\d+)$/); return match ? parseInt(match[1]) : null; }).filter(id => id !== null); } catch (error) { logger.error('Error getting all tenant sessions', { error: error.message }); return []; } } /** * Get session statistics * @returns {Object} Session statistics */ getStats() { try { const tenantSessions = this.getAllTenantSessions(); const backups = fs.readdirSync(this.baseSessionPath) .filter(f => f.includes('_backup_')).length; return { totalSessions: tenantSessions.length, totalBackups: backups, tenants: tenantSessions }; } catch (error) { logger.error('Error getting session stats', { error: error.message }); return { totalSessions: 0, totalBackups: 0, tenants: [] }; } } } module.exports = WhatsAppStateManager; |