🐛 fix typecheck and cleanup imports

server/api/pots/[slug]/participants/[id].delete.ts

@@ -0,0 +1,25 @@
+import { and, eq } from 'drizzle-orm'
+import { useDb } from '~~/server/database/client'
+import { expenseParticipants, expenses, participants } from '~~/server/database/schema'
+
+export default defineEventHandler(async (event) => {
+  const slug = getRouterParam(event, 'slug')!
+  const id = Number(getRouterParam(event, 'id'))
+  await getPotOrThrow(slug)
+
+  const db = useDb()
+  const [existing] = await db.select().from(participants).where(and(eq(participants.id, id), eq(participants.potSlug, slug)))
+  if (!existing) {
+    throw createError({ statusCode: 404, statusMessage: 'Participant not found' })
+  }
+
+  const [asPayer] = await db.select().from(expenses).where(eq(expenses.payerId, id)).limit(1)
+  const [asSplit] = await db.select().from(expenseParticipants).where(eq(expenseParticipants.participantId, id)).limit(1)
+  if (asPayer || asSplit) {
+    throw createError({ statusCode: 409, statusMessage: 'Cannot remove a participant with expenses or payments' })
+  }
+
+  await db.delete(participants).where(eq(participants.id, id))
+
+  return { success: true }
+})