'use client'

import { useState, useCallback } from 'react'
import type { FolderEntry } from '@/lib/client-types'
import { revokeEntryUrls } from '@/lib/client-object-urls'

export function useFolderEntries() {
  const [entries, setEntries] = useState<FolderEntry[]>([])

  const updateEntry = useCallback((index: number, patch: Partial<FolderEntry>) => {
    setEntries((prev) => prev.map((f, i) => (i === index ? { ...f, ...patch } : f)))
  }, [])

  const removeEntry = useCallback((index: number) => {
    setEntries((prev) => {
      const entry = prev[index]
      if (entry) revokeEntryUrls(entry)
      return prev.filter((_, i) => i !== index)
    })
  }, [])

  const resetEntries = useCallback(() => {
    setEntries((prev) => {
      prev.forEach((f) => {
        revokeEntryUrls(f)
      })
      return []
    })
  }, [])

  const allDone = entries.length > 0 && entries.every((f) => f.status === 'success')
  const hasErrors = entries.some((f) => f.status === 'error')

  return {
    entries,
    setEntries,
    updateEntry,
    removeEntry,
    resetEntries,
    allDone,
    hasErrors,
  }
}