// ========= 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 { FileStat, PathSpec } from '@struktoai/mirage-core'
import type { Stats } from 'ssh2'
import type { SSHAccessor } from '../../accessor/ssh.ts'
import { attrsToFileStat } from './entry.ts'
import { isNoSuchFile, joinRoot, stripPrefix } from './utils.ts'
import { enoent, rstripSlash } from '@struktoai/mirage-core'

export async function stat(accessor: SSHAccessor, p: PathSpec): Promise<FileStat> {
  const sftp = await accessor.sftp()
  const virtual = stripPrefix(p)
  const remote = joinRoot(accessor.config.root ?? '/', virtual)
  const attrs = await new Promise<Stats>((resolveFn, rejectFn) => {
    sftp.lstat(remote, (err, stats) => {
      if (err !== undefined) {
        if (isNoSuchFile(err)) rejectFn(enoent(p))
        else rejectFn(err)
        return
      }
      resolveFn(stats)
    })
  })
  const cleaned = rstripSlash(virtual)
  const name = cleaned.length === 0 ? '/' : (cleaned.split('/').pop() ?? '/')
  return attrsToFileStat(name, attrs)
}
