// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========

import type { RAMAccessor } from '../../accessor/ram.ts'
import type { PathSpec } from '../../types.ts'
import { norm, nowIso } from './utils.ts'
import { enoent } from '../../utils/errors.ts'
import { checkDestParents } from './dest.ts'
import { invalidateAfterWrite } from '../../cache/context.ts'

export async function copy(accessor: RAMAccessor, src: PathSpec, dst: PathSpec): Promise<void> {
  const s = norm(src.mountPath)
  const d = norm(dst.mountPath)
  checkDestParents(accessor, dst, d)
  const data = accessor.store.files.get(s)
  if (data === undefined) throw enoent(src)
  accessor.store.files.set(d, data)
  accessor.store.modified.set(d, nowIso())
  await invalidateAfterWrite(dst)
  return Promise.resolve()
}
