feat(back-end): introduce payload

Payload is the next.js Headless CMS and App Framework,
I would like to pick it up and modify it as it is MIT licensed.

Many features in Payload is not applicable for our project.
So, I modify it so that it is light and clear.

1 files changed, 78 insertions, 0 deletions

diff --git a/src/app/(main)/(home)/actions.ts b/src/app/(main)/(home)/actions.ts
new file mode 100644
index 0000000..fdb16ca
--- /dev/null
+++ b/src/app/(main)/(home)/actions.ts
@@ -0,0 +1,78 @@
+'use server';
+
+import { getContact, sendWelcomeEmail, updateContact } from '@/lib/resend';
+import { ActionError, actionClient } from '@/lib/safe-action';
+import { getSortedByDatePosts } from '@/lib/source';
+import { NewsletterSchema } from '@/lib/validators';
+import { getSession } from '@/server/auth';
+import { Resend } from 'resend';
+
+const resend = new Resend(process.env.RESEND_API_KEY as string);
+const audienceId = process.env.RESEND_AUDIENCE_ID as string;
+
+const splitName = (name = '') => {
+  const [firstName, ...lastName] = name.split(' ').filter(Boolean);
+  return {
+    firstName: firstName,
+    lastName: lastName.join(' '),
+  };
+};
+
+export const subscribeUser = actionClient
+  .schema(NewsletterSchema)
+  .action(async ({ parsedInput: { email } }) => {
+    const session = await getSession();
+    const fullName = session?.user.name || '';
+    const { firstName, lastName } = fullName
+      ? splitName(fullName)
+      : { firstName: '', lastName: '' };
+
+    try {
+      const contact = await getContact({ email, audienceId });
+
+      if (contact) {
+        await updateContact({
+          email,
+          firstName,
+          lastName,
+          audienceId,
+          unsubscribed: false,
+        });
+
+        return {
+          success: true,
+          message: 'You are already subscribed to our newsletter!',
+        };
+      }
+
+      const { data, error } = await resend.contacts.create({
+        email,
+        audienceId,
+        firstName,
+        lastName,
+        unsubscribed: false,
+      });
+
+      if (!data || error) {
+        throw new Error(
+          `Failed to create contact: ${error?.message || 'Unknown error'}`,
+        );
+      }
+
+      const posts = getSortedByDatePosts();
+      await sendWelcomeEmail({
+        posts,
+        to: email,
+        firstName: firstName || 'there',
+      });
+
+      return {
+        success: true,
+        message: 'You are now subscribed to our newsletter!',
+      };
+    } catch (error) {
+      console.error('Failed to subscribe:', error);
+      if (error instanceof ActionError) throw error;
+      throw new ActionError('Oops, something went wrong while subscribing.');
+    }
+  });