From 43d99bb980f68430dc4c0c2f2c2c46b9a441101d Mon Sep 17 00:00:00 2001
From: KM Koushik <koushikmohan1996@gmail.com>
Date: Sun, 17 Aug 2025 09:09:43 +1000
Subject: [PATCH] fix one-click unsub from the header (#195)

---
 .../(dashboard)/admin/ses-configurations.tsx  |  2 +
 .../src/app/api/unsubscribe-oneclick/route.ts | 49 +++++++++++++++++++
 .../src/server/service/campaign-service.ts    | 13 ++++-
 3 files changed, 63 insertions(+), 1 deletion(-)
 create mode 100644 apps/web/src/app/api/unsubscribe-oneclick/route.ts

diff --git a/apps/web/src/app/(dashboard)/admin/ses-configurations.tsx b/apps/web/src/app/(dashboard)/admin/ses-configurations.tsx
index 42dae43..34cd891 100644
--- a/apps/web/src/app/(dashboard)/admin/ses-configurations.tsx
+++ b/apps/web/src/app/(dashboard)/admin/ses-configurations.tsx
@@ -24,6 +24,7 @@ export default function SesConfigurations() {
           <TableHeader className="">
             <TableRow className=" bg-muted/30">
               <TableHead className="rounded-tl-xl">Region</TableHead>
+              <TableHead>Prefix Key</TableHead>
               <TableHead>Callback URL</TableHead>
               <TableHead>Callback status</TableHead>
               <TableHead>Created at</TableHead>
@@ -52,6 +53,7 @@ export default function SesConfigurations() {
               sesSettingsQuery.data?.map((sesSetting) => (
                 <TableRow key={sesSetting.id}>
                   <TableCell>{sesSetting.region}</TableCell>
+                  <TableCell>{sesSetting.idPrefix}</TableCell>
                   <TableCell>
                     <div className="w-[200px] overflow-hidden text-ellipsis">
                       <TextWithCopyButton
diff --git a/apps/web/src/app/api/unsubscribe-oneclick/route.ts b/apps/web/src/app/api/unsubscribe-oneclick/route.ts
new file mode 100644
index 0000000..b2ace16
--- /dev/null
+++ b/apps/web/src/app/api/unsubscribe-oneclick/route.ts
@@ -0,0 +1,49 @@
+import { NextRequest, NextResponse } from "next/server";
+import { unsubscribeContactFromLink } from "~/server/service/campaign-service";
+import { logger } from "~/server/logger/log";
+
+export async function POST(request: NextRequest) {
+  try {
+    const url = new URL(request.url);
+    const id = url.searchParams.get("id");
+    const hash = url.searchParams.get("hash");
+
+    if (!id || !hash) {
+      logger.warn(
+        `One-click unsubscribe: Missing id or hash id: ${id} hash: ${hash} url: ${request.url}`
+      );
+      return NextResponse.json(
+        { error: "Invalid unsubscribe link" },
+        { status: 400 }
+      );
+    }
+
+    // Process the unsubscribe using existing logic
+    const contact = await unsubscribeContactFromLink(id, hash);
+
+    logger.info(
+      { contactId: contact.id, campaignId: id.split("-")[1] },
+      "One-click unsubscribe successful"
+    );
+
+    // Return success response for email clients
+    return NextResponse.json(
+      {
+        success: true,
+        message: "Successfully unsubscribed",
+      },
+      { status: 200 }
+    );
+  } catch (error) {
+    logger.error(
+      { error: error instanceof Error ? error.message : error },
+      "One-click unsubscribe failed"
+    );
+
+    // Return error response
+    return NextResponse.json(
+      { error: "Failed to process unsubscribe request" },
+      { status: 500 }
+    );
+  }
+}
diff --git a/apps/web/src/server/service/campaign-service.ts b/apps/web/src/server/service/campaign-service.ts
index 52c7962..3e80836 100644
--- a/apps/web/src/server/service/campaign-service.ts
+++ b/apps/web/src/server/service/campaign-service.ts
@@ -99,6 +99,16 @@ export function createUnsubUrl(contactId: string, campaignId: string) {
   return `${env.NEXTAUTH_URL}/unsubscribe?id=${unsubId}&hash=${unsubHash}`;
 }
 
+export function createOneClickUnsubUrl(contactId: string, campaignId: string) {
+  const unsubId = `${contactId}-${campaignId}`;
+
+  const unsubHash = createHash("sha256")
+    .update(`${unsubId}-${env.NEXTAUTH_SECRET}`)
+    .digest("hex");
+
+  return `${env.NEXTAUTH_URL}/api/unsubscribe-oneclick?id=${unsubId}&hash=${unsubHash}`;
+}
+
 export async function unsubscribeContactFromLink(id: string, hash: string) {
   const [contactId, campaignId] = id.split("-");
 
@@ -253,6 +263,7 @@ async function processContactEmail(jobData: CampaignEmailJob) {
   const renderer = new EmailRenderer(jsonContent);
 
   const unsubscribeUrl = createUnsubUrl(contact.id, emailConfig.campaignId);
+  const oneClickUnsubUrl = createOneClickUnsubUrl(contact.id, emailConfig.campaignId);
 
   // Check for suppressed emails before processing
   const toEmails = [contact.email];
@@ -387,7 +398,7 @@ async function processContactEmail(jobData: CampaignEmailJob) {
     emailConfig.teamId,
     emailConfig.region,
     false,
-    unsubscribeUrl
+    oneClickUnsubUrl
   );
 }