fix(email): test saved SMTP config and add TLS modes (#3388)

fluxer_api/pkgs/email/src/SmtpEmailProvider.ts

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
+import {resolveSmtpTlsMode, type SmtpTlsMode, SmtpTlsModes} from '@fluxer/constants/src/SmtpConstants';
 import {createLogger} from '@fluxer/logger/src/Logger';
 import type {EmailMessage, IEmailProvider} from '@pkgs/email/src/EmailProviderTypes';
 import nodemailer, {type Transporter} from 'nodemailer';
@@ -11,7 +12,7 @@ interface SmtpEmailConfig {
 	port: number;
 	username: string;
 	password: string;
-	secure?: boolean;
+	tlsMode?: SmtpTlsMode | null;
 	connectionTimeoutMs?: number;
 	greetingTimeoutMs?: number;
 	socketTimeoutMs?: number;
@@ -19,12 +20,20 @@ interface SmtpEmailConfig {
 
 export class SmtpEmailProvider implements IEmailProvider {
 	private readonly transporter: Transporter;
+	private readonly host: string;
+	private readonly port: number;
+	private readonly tlsMode: SmtpTlsMode;
 
 	constructor(config: SmtpEmailConfig) {
+		this.host = config.host;
+		this.port = config.port;
+		this.tlsMode = resolveSmtpTlsMode(config.tlsMode, config.port);
 		this.transporter = nodemailer.createTransport({
 			host: config.host,
 			port: config.port,
-			secure: config.secure ?? true,
+			secure: this.tlsMode === SmtpTlsModes.IMPLICIT,
+			requireTLS: this.tlsMode === SmtpTlsModes.STARTTLS,
+			ignoreTLS: this.tlsMode === SmtpTlsModes.NONE,
 			auth: {
 				user: config.username,
 				pass: config.password,
@@ -52,7 +61,7 @@ export class SmtpEmailProvider implements IEmailProvider {
 			logger.debug({to: message.to}, 'Email sent via SMTP');
 			return true;
 		} catch (error) {
-			logger.error({error}, 'SMTP send failed');
+			logger.error({error, host: this.host, port: this.port, tlsMode: this.tlsMode}, 'SMTP send failed');
 			return false;
 		}
 	}