fix one-click unsub from the header (#195)

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 }
+    );
+  }
+}