import { useState, useCallback, useRef } from 'react'

interface ConfirmOptions {
  title: string
  message: string
  confirmLabel?: string
  cancelLabel?: string
  variant?: 'danger' | 'warning' | 'info'
}

interface ConfirmState extends ConfirmOptions {
  open: boolean
  resolve: ((value: boolean) => void) | null
}

/**
 * UX-01: Promise-based 确认对话框 hook
 * 替代原生 confirm()，返回 Promise<boolean>
 */
export function useConfirm() {
  const [state, setState] = useState<ConfirmState>({
    open: false,
    title: '',
    message: '',
    resolve: null
  })

  // 使用 ref 确保回调中能拿到最新的 resolve
  const resolveRef = useRef<((value: boolean) => void) | null>(null)

  const confirm = useCallback((options: ConfirmOptions): Promise<boolean> => {
    return new Promise<boolean>((resolve) => {
      resolveRef.current = resolve
      setState({
        open: true,
        title: options.title,
        message: options.message,
        confirmLabel: options.confirmLabel,
        cancelLabel: options.cancelLabel,
        variant: options.variant,
        resolve
      })
    })
  }, [])

  const handleConfirm = useCallback(() => {
    resolveRef.current?.(true)
    setState(prev => ({ ...prev, open: false, resolve: null }))
    resolveRef.current = null
  }, [])

  const handleCancel = useCallback(() => {
    resolveRef.current?.(false)
    setState(prev => ({ ...prev, open: false, resolve: null }))
    resolveRef.current = null
  }, [])

  return {
    confirm,
    confirmDialogProps: {
      open: state.open,
      title: state.title,
      message: state.message,
      confirmLabel: state.confirmLabel,
      cancelLabel: state.cancelLabel,
      variant: state.variant,
      onConfirm: handleConfirm,
      onCancel: handleCancel
    }
  }
}