import { toast } from 'sonner'
import type { FieldValues, Path, UseFormSetError } from 'react-hook-form'
import { ApiError } from '@/api/client'

/**
 * Standard error handling: 422 field errors land on the form (when given),
 * everything else surfaces as a toast with the backend's localized message.
 */
export function handleApiError<T extends FieldValues>(
  error: unknown,
  setError?: UseFormSetError<T>,
): void {
  if (error instanceof ApiError) {
    if (error.status === 422 && error.errors && setError) {
      for (const [field, messages] of Object.entries(error.errors)) {
        setError(field as Path<T>, { type: 'server', message: messages[0] })
      }
      return
    }
    toast.error(error.message || `请求失败（${error.code}）`)
    return
  }
  toast.error('网络异常，请稍后重试')
}