import { useRouter } from 'next/navigation'
import { flashcardsService } from '@/lib/services/flashcards'
import { useToast } from '@/components/shared/Toast'
import type { Flashcard } from '@/lib/services/flashcards'

interface UseFlashcardOperationsReturn {
  handleEdit: (card: Flashcard) => void
  handleDelete: (card: Flashcard, onSuccess?: () => void) => Promise<void>
  handleToggleFavorite: (card: Flashcard, onSuccess?: () => void) => Promise<void>
}

export const useFlashcardOperations = (): UseFlashcardOperationsReturn => {
  const router = useRouter()
  const toast = useToast()

  const handleEdit = (card: Flashcard) => {
    router.push(`/flashcards/${card.id}?edit=true`)
  }

  const handleDelete = async (card: Flashcard, onSuccess?: () => void) => {
    if (!confirm(`確定要刪除詞卡「${card.word}」嗎？`)) {
      return
    }

    try {
      const result = await flashcardsService.deleteFlashcard(card.id)
      if (result.success) {
        if (onSuccess) {
          await onSuccess()
        }
        toast.success(`詞卡「${card.word}」已刪除`)
      } else {
        toast.error(result.error || '刪除失敗')
      }
    } catch (err) {
      toast.error('刪除失敗，請重試')
    }
  }

  const handleToggleFavorite = async (card: Flashcard, onSuccess?: () => void) => {
    try {
      const result = await flashcardsService.toggleFavorite(card.id)
      if (result.success) {
        if (onSuccess) {
          await onSuccess()
        }
        toast.success(`${card.isFavorite ? '已取消收藏' : '已加入收藏'}「${card.word}」`)
      } else {
        toast.error(result.error || '操作失敗')
      }
    } catch (err) {
      toast.error('操作失敗，請重試')
    }
  }

  return {
    handleEdit,
    handleDelete,
    handleToggleFavorite
  }
}