fix multiple recipients

src/handlers.js

@@ -2,16 +2,11 @@ import { mail } from './mail';
 import { params } from './params';
 
 const postApiNotify = async ({ env, request }) => {
-  const { to, errors = [], ...rest } = await params(request);
-  const recipients = to?.split(',') ?? [];
-  recipients.map(async (recipient) => {
-    await mail({
-      env,
-      to: recipient,
-      ...rest,
-    });
+  const { errors = [], ...rest } = await params(request);
+  await mail({
+    env,
+    ...rest,
   });
-
   const response = {
     ...rest,
     ...(errors.length && { errors }),

src/handlers.spec.js

@@ -57,26 +57,19 @@ describe('handlers', () => {
         }),
       });
       await handler({ request });
-      expect(global.fetch).toHaveBeenCalledTimes(2);
-
-      const requestBody = (email) => ({
-        body: JSON.stringify(
-          payload({
-            ...input,
-            to: email,
-          }),
-        ),
-        headers: expect.any(Object),
-        method: 'POST',
-      });
 
       expect(global.fetch).toHaveBeenCalledWith(
         'https://api.sendgrid.com/v3/mail/send',
-        requestBody('[email protected]'),
-      );
-      expect(global.fetch).toHaveBeenCalledWith(
-        'https://api.sendgrid.com/v3/mail/send',
-        requestBody('[email protected]'),
+        {
+          body: JSON.stringify(
+            payload({
+              ...input,
+              to: '[email protected],[email protected]',
+            }),
+          ),
+          headers: expect.any(Object),
+          method: 'POST',
+        },
       );
     });
   });

src/mail.js

@@ -13,7 +13,7 @@ export const payload = ({ subject, to, body, attachments }) => ({
   personalizations: [
     {
       subject,
-      to: [{ email: to }],
+      to: to?.split(',').map((recipient) => ({ email: recipient })),
     },
   ],
 });

src/mail.test.js

@@ -1,6 +1,6 @@
 import { describe, it, expect, vi, beforeAll } from 'vitest';
 import { input } from './test';
-import { mail } from './mail';
+import { mail, payload } from './mail';
 
 // https://docs.sendgrid.com/api-reference/mail-send/mail-send#body
 const fixture = {
@@ -46,3 +46,14 @@ describe('mail', () => {
     );
   });
 });
+
+describe('payload', () => {
+  it('supports multiple recipients', () => {
+    expect(
+      payload({ to: '[email protected],[email protected]' }).personalizations[0].to,
+    ).toStrictEqual([
+      { email: '[email protected]' },
+      { email: '[email protected]' },
+    ]);
+  });
+});

wrangler.toml

@@ -3,5 +3,5 @@ main = "src/index.js"
 compatibility_date = "2024-03-04"
 compatibility_flags = ["nodejs_compat"]
 routes = [
-	{ pattern = "www.cinotify.cc/api/*", zone_id = "8b83258726802e1e77310bd3b08dfefa" }
-]
+    { pattern = "www.cinotify.cc/api/*", zone_id = "8b83258726802e1e77310bd3b08dfefa" }
+]