import { join } from "path"
import { existsSync } from "fs"
import { unlink } from "fs/promises"
import * as git from "../git.ts"
import * as state from "../state.ts"

export async function action() {
  const root = await git.repoRoot()
  const st = await state.load(root)
  const sessions = Object.values(st.sessions)

  if (sessions.length === 0) {
    console.log("No sessions to clean up.")
    return
  }

  const stale = sessions.filter(s => !existsSync(s.worktree))

  if (stale.length === 0) {
    console.log("No stale sessions found.")
    return
  }

  for (const s of stale) {
    await state.removeSession(root, s.branch)
    await unlink(join(root, '.sandlot', s.branch)).catch(() => {})
    console.log(`✔ Removed stale session: ${s.branch}`)
  }
}