feat: initial commit!

1 files changed, 66 insertions, 0 deletions

diff --git a/src/email/email.ts b/src/email/email.ts
new file mode 100644
index 0000000..61ec18a
--- /dev/null
+++ b/src/email/email.ts
@@ -0,0 +1,66 @@
+import nodemailer from "nodemailer";
+import { logger } from "../lib/pino";
+
+let transporter: nodemailer.Transporter | null = null;
+
+/**
+ * Gets or creates the nodemailer transporter instance.
+ * Configuration is loaded from SMTP environment variables.
+ */
+export function getTransporter(): nodemailer.Transporter {
+  if (!transporter) {
+    try {
+      if (!process.env.SMTP_HOST) {
+        logger.error("SMTP_HOST environment variable not set");
+        throw new Error("SMTP_HOST is required");
+      }
+
+      if (!process.env.SMTP_PORT) {
+        logger.error("SMTP_PORT environment variable not set");
+        throw new Error("SMTP_PORT is required");
+      }
+
+      if (!process.env.SMTP_USER) {
+        logger.error("SMTP_USER environment variable not set");
+        throw new Error("SMTP_USER is required");
+      }
+
+      if (!process.env.SMTP_PASS) {
+        logger.error("SMTP_PASS environment variable not set");
+        throw new Error("SMTP_PASS is required");
+      }
+
+      const port = Number(process.env.SMTP_PORT);
+      if (isNaN(port) || port <= 0 || port > 65535) {
+        logger.error(
+          { port: process.env.SMTP_PORT },
+          "Invalid SMTP_PORT value",
+        );
+        throw new Error("SMTP_PORT must be a valid port number");
+      }
+
+      transporter = nodemailer.createTransport({
+        host: process.env.SMTP_HOST,
+        port,
+        secure: process.env.SMTP_SECURE == "1",
+        auth: {
+          user: process.env.SMTP_USER,
+          pass: process.env.SMTP_PASS,
+        },
+      });
+
+      logger.info(
+        {
+          host: process.env.SMTP_HOST,
+          port,
+          secure: process.env.SMTP_SECURE == "1",
+        },
+        "Email transporter created successfully",
+      );
+    } catch (error) {
+      logger.error({ error }, "Failed to create email transporter");
+      throw error;
+    }
+  }
+  return transporter;
+}