From d9e9824146fa43104f9d9329dcae627e819ebf6c Mon Sep 17 00:00:00 2001
From: Nareshkumar Rao <dev@nrx.sh>
Date: Tue, 22 Apr 2025 12:48:23 +0200
Subject: [PATCH] cleanup tags on edit

---
 src/app/blog/write/action.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/app/blog/write/action.ts b/src/app/blog/write/action.ts
index 2a9ee67..17cb0b7 100644
--- a/src/app/blog/write/action.ts
+++ b/src/app/blog/write/action.ts
@@ -39,6 +39,21 @@ export async function savePostServer(
   const slug = slugify(title, { lower: true, strict: true });
 
   if (existingSlug) {
+    const post = await prisma.post.findUnique({
+      where: { slug: existingSlug },
+      include: { tags: true },
+    });
+    if (!post) {
+      throw new Error("Post not found");
+    }
+    for (const tag of post.tags) {
+      const postsWithTag = await prisma.post.count({
+        where: { tags: { some: { id: tag.id } } },
+      });
+      if (postsWithTag == 0) {
+        await prisma.tag.delete({ where: { id: tag.id } });
+      }
+    }
     await prisma.post.delete({ where: { slug: existingSlug } });
   }