From 448a534245cabf2bd8d4cb555dd15c46e06c3587 Mon Sep 17 00:00:00 2001
From: Lindsay Holmwood <lindsay@holmwood.id.au>
Date: Wed, 20 May 2026 23:38:57 +1000
Subject: [PATCH] fix(examples/prisma): make demo idempotent across runs

The `@cipherstash/prisma-next` example demo (`pnpm start`) inserts seed users
with hardcoded primary keys (`user-0`..`user-3`). The first run succeeds;
every subsequent run aborts with `23505 duplicate key value violates unique
constraint "users_pkey"` before any of the codec demonstrations execute.

Make the demo idempotent.
---
 examples/prisma/src/index.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/examples/prisma/src/index.ts b/examples/prisma/src/index.ts
index 35cc1023..64242ec0 100644
--- a/examples/prisma/src/index.ts
+++ b/examples/prisma/src/index.ts
@@ -103,6 +103,7 @@ async function main() {
 
   const runtime = await db.connect({ url })
   try {
+    await clearUsers()
     await insertUsers()
     await searchByEq()
     await searchByIlikeAndDecrypt()
@@ -116,6 +117,13 @@ async function main() {
   }
 }
 
+async function clearUsers(): Promise<void> {
+  const removed = await db.orm.User.where((u) => u.id.isNotNull()).deleteCount()
+  if (removed > 0) {
+    console.log(`--- Cleanup ---\nRemoved ${removed} existing user row(s).\n`)
+  }
+}
+
 async function insertUsers(): Promise<void> {
   console.log('--- Insert (mixed-codec round-trip) ---')
   await Promise.all(