1 files changed, 61 insertions, 0 deletions
diff --git a/src/lib/utils/mailer.ts b/src/lib/utils/mailer.ts
new file mode 100644
index 0000000..e5edd74
--- /dev/null
+++ b/src/lib/utils/mailer.ts
@@ -0,0 +1,61 @@
+import * as nodemailer from 'nodemailer';
+import { continueRetryUntilValidation } from './retry';
+
+export interface Mailer {
+	sendMail(to: string, subject: string, message: string): Promise<boolean>;
+}
+
+export class MistyMountainsMailer implements Mailer {
+	private from: string;
+	private domain: string;
+	private username: string;
+	private password: string;
+	private port: number;
+
+	private transporter: nodemailer.Transporter;
+
+	constructor(username: string, password: string, from: string, domain: string, port: number) {
+		this.from = from;
+		this.username = username;
+		this.password = password;
+		this.domain = domain;
+		this.port = port;
+
+		this.transporter = nodemailer.createTransport({
+			host: this.domain,
+			port: this.port,
+			auth: {
+				user: this.username,
+				pass: this.password
+			},
+			requireTLS: true,
+			tls: {
+				rejectUnauthorized: true
+			}
+		});
+	}
+
+	public async sendMail(to: string, subject: string, message: string) {
+		const mail = {
+			from: this.from,
+			subject,
+			html: message,
+			to
+		};
+
+		return !!(await continueRetryUntilValidation<string>(async () => {
+			const { messageId } = await this.transporter.sendMail(mail);
+			return messageId;
+		}));
+	}
+}
+
+export const EnvMistyMountainsMailerFactory = () => {
+	return new MistyMountainsMailer(
+		process.env.SMTP_USERNAME,
+		process.env.SMTP_PASSWORD,
+		process.env.FROM_EMAIL,
+		process.env.SMTP_SERVER,
+		Number(process.env.SMTP_PORT)
+	);
+};