fix: change tag to tags for revalidation

app/api/revalidate/route.ts

@@ -1,17 +1,17 @@
 import { env } from "@/env/server"
-import { revalidateTag } from 'next/cache'
+import { revalidateTag } from "next/cache"
 
-import type { NextRequest } from 'next/server'
+import type { NextRequest } from "next/server"
 
 export async function POST(request: NextRequest) {
   try {
     const secret = request.nextUrl.searchParams.get("secret") ?? ""
-    const tag = request.nextUrl.searchParams.get("tag") ?? ""
+    const tagsParam = request.nextUrl.searchParams.get("tags") ?? ""
 
     if (secret !== env.REVALIDATE_SECRET) {
       return Response.json(
         {
-          message: 'Invalid secret',
+          message: "Invalid secret",
           now: Date.now(),
           revalidated: false,
         },
@@ -21,10 +21,10 @@ export async function POST(request: NextRequest) {
       )
     }
 
-    if (!tag) {
+    if (!tagsParam) {
       return Response.json(
         {
-          message: 'Missing tag param',
+          message: "Missing tags param",
           now: Date.now(),
           revalidated: false,
         },
@@ -34,12 +34,31 @@ export async function POST(request: NextRequest) {
       )
     }
 
-    revalidateTag(tag)
+    const tags = tagsParam.split(",")
+    if (!tags.length) {
+      return Response.json(
+        {
+          message: "No tags",
+          now: Date.now(),
+          revalidated: false,
+        },
+        {
+          status: 400,
+        }
+      )
+    }
+
+    tags.forEach((tag) => {
+      revalidateTag(tag)
+    })
 
     return Response.json({ revalidated: true, now: Date.now() })
   } catch (error) {
-    console.info("Failed to revalidate tag")
+    console.info("Failed to revalidate tag(s)")
     console.error(error)
-    return Response.json({ revalidated: false, now: Date.now() }, { status: 500 })
+    return Response.json(
+      { revalidated: false, now: Date.now() },
+      { status: 500 }
+    )
   }
 }