Updates

package-shared/functions/email/fns/validate-email.ts

@@ -0,0 +1,52 @@
+import handleNodemailer, {
+    HandleNodemailerParam,
+} from "../../backend/handleNodemailer";
+import emailMxLookup from "../verification/email-mx-lookup";
+import emailRegexCheck from "../verification/email-regex-test";
+
+type Param = {
+    email?: string;
+    welcomeEmailOptions?: HandleNodemailerParam;
+};
+export default async function validateEmail({
+    email,
+    welcomeEmailOptions,
+}: Param): Promise<{ isValid: boolean; message?: string }> {
+    if (!email) {
+        return {
+            isValid: false,
+            message: "Email is required.",
+        };
+    }
+
+    if (!emailRegexCheck(email)) {
+        return {
+            isValid: false,
+            message: "Invalid email format.",
+        };
+    }
+
+    const checkEmailMxRecords = await emailMxLookup(email);
+
+    if (!checkEmailMxRecords) {
+        return {
+            isValid: false,
+            message: "Email domain does not have valid MX records.",
+        };
+    }
+
+    if (welcomeEmailOptions) {
+        const welcomeEmail = await handleNodemailer(welcomeEmailOptions);
+        if (!welcomeEmail?.accepted?.[0]) {
+            return {
+                isValid: false,
+                message: "Email verification failed.",
+            };
+        }
+    }
+
+    return {
+        isValid: true,
+        message: "Email is valid.",
+    };
+}