start the path to rust

dist_ts/mail/delivery/smtpclient/create-client.js

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+/**
+ * SMTP Client Factory
+ * Factory function for client creation and dependency injection
+ */
+import { SmtpClient } from './smtp-client.js';
+import { ConnectionManager } from './connection-manager.js';
+import { CommandHandler } from './command-handler.js';
+import { AuthHandler } from './auth-handler.js';
+import { TlsHandler } from './tls-handler.js';
+import { SmtpErrorHandler } from './error-handler.js';
+import { validateClientOptions } from './utils/validation.js';
+import { DEFAULTS } from './constants.js';
+/**
+ * Create a complete SMTP client with all components
+ */
+export function createSmtpClient(options) {
+    // Validate options
+    const errors = validateClientOptions(options);
+    if (errors.length > 0) {
+        throw new Error(`Invalid client options: ${errors.join(', ')}`);
+    }
+    // Apply defaults
+    const clientOptions = {
+        connectionTimeout: DEFAULTS.CONNECTION_TIMEOUT,
+        socketTimeout: DEFAULTS.SOCKET_TIMEOUT,
+        maxConnections: DEFAULTS.MAX_CONNECTIONS,
+        maxMessages: DEFAULTS.MAX_MESSAGES,
+        pool: false,
+        secure: false,
+        debug: false,
+        ...options
+    };
+    // Create handlers
+    const errorHandler = new SmtpErrorHandler(clientOptions);
+    const connectionManager = new ConnectionManager(clientOptions);
+    const commandHandler = new CommandHandler(clientOptions);
+    const authHandler = new AuthHandler(clientOptions, commandHandler);
+    const tlsHandler = new TlsHandler(clientOptions, commandHandler);
+    // Create and return SMTP client
+    return new SmtpClient({
+        options: clientOptions,
+        connectionManager,
+        commandHandler,
+        authHandler,
+        tlsHandler,
+        errorHandler
+    });
+}
+/**
+ * Create SMTP client with connection pooling enabled
+ */
+export function createPooledSmtpClient(options) {
+    return createSmtpClient({
+        ...options,
+        pool: true,
+        maxConnections: options.maxConnections || DEFAULTS.MAX_CONNECTIONS,
+        maxMessages: options.maxMessages || DEFAULTS.MAX_MESSAGES
+    });
+}
+/**
+ * Create SMTP client for high-volume sending
+ */
+export function createBulkSmtpClient(options) {
+    return createSmtpClient({
+        ...options,
+        pool: true,
+        maxConnections: Math.max(options.maxConnections || 10, 10),
+        maxMessages: Math.max(options.maxMessages || 1000, 1000),
+        connectionTimeout: options.connectionTimeout || 30000,
+        socketTimeout: options.socketTimeout || 120000
+    });
+}
+/**
+ * Create SMTP client for transactional emails
+ */
+export function createTransactionalSmtpClient(options) {
+    return createSmtpClient({
+        ...options,
+        pool: false, // Use fresh connections for transactional emails
+        maxConnections: 1,
+        maxMessages: 1,
+        connectionTimeout: options.connectionTimeout || 10000,
+        socketTimeout: options.socketTimeout || 30000
+    });
+}
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