import type { DataTag } from '@tanstack/query-core'
import type { InfiniteData } from '@tanstack/query-core'
import type { UseInfiniteQueryOptions } from './types'
import type { DefaultError, QueryKey } from '@tanstack/query-core'

export type UndefinedInitialDataInfiniteOptions<
  TQueryFnData,
  TError = DefaultError,
  TData = InfiniteData<TQueryFnData>,
  TQueryKey extends QueryKey = QueryKey,
  TPageParam = unknown,
> = UseInfiniteQueryOptions<
  TQueryFnData,
  TError,
  TData,
  TQueryFnData,
  TQueryKey,
  TPageParam
> & {
  initialData?: undefined
}

type NonUndefinedGuard<T> = T extends undefined ? never : T

export type DefinedInitialDataInfiniteOptions<
  TQueryFnData,
  TError = DefaultError,
  TData = InfiniteData<TQueryFnData>,
  TQueryKey extends QueryKey = QueryKey,
  TPageParam = unknown,
> = UseInfiniteQueryOptions<
  TQueryFnData,
  TError,
  TData,
  TQueryFnData,
  TQueryKey,
  TPageParam
> & {
  initialData:
    | NonUndefinedGuard<InfiniteData<TQueryFnData, TPageParam>>
    | (() => NonUndefinedGuard<InfiniteData<TQueryFnData, TPageParam>>)
}

export function infiniteQueryOptions<
  TQueryFnData,
  TError = DefaultError,
  TData = InfiniteData<TQueryFnData>,
  TQueryKey extends QueryKey = QueryKey,
  TPageParam = unknown,
>(
  options: UndefinedInitialDataInfiniteOptions<
    TQueryFnData,
    TError,
    TData,
    TQueryKey,
    TPageParam
  >,
): UndefinedInitialDataInfiniteOptions<
  TQueryFnData,
  TError,
  TData,
  TQueryKey,
  TPageParam
> & {
  queryKey: DataTag<TQueryKey, TData>
}

export function infiniteQueryOptions<
  TQueryFnData,
  TError = DefaultError,
  TData = InfiniteData<TQueryFnData>,
  TQueryKey extends QueryKey = QueryKey,
  TPageParam = unknown,
>(
  options: DefinedInitialDataInfiniteOptions<
    TQueryFnData,
    TError,
    TData,
    TQueryKey,
    TPageParam
  >,
): DefinedInitialDataInfiniteOptions<
  TQueryFnData,
  TError,
  TData,
  TQueryKey,
  TPageParam
> & {
  queryKey: DataTag<TQueryKey, TData>
}

export function infiniteQueryOptions(options: unknown) {
  return options
}