import { cp, mkdir, rm } from "node:fs/promises"
import { existsSync } from "node:fs"
import { dirname, resolve } from "node:path"
import { fileURLToPath } from "node:url"

const here = dirname(fileURLToPath(import.meta.url))
const webRoot = resolve(here, "..")
const source = resolve(webRoot, "canvas-app", "dist")
const target = resolve(webRoot, "public", "canvas")

if (!existsSync(source)) {
  throw new Error(`Canvas build output missing: ${source}`)
}

await rm(target, { recursive: true, force: true })
await mkdir(target, { recursive: true })
await cp(source, target, { recursive: true })