import {
  useInfiniteQuery as useInfiniteReactQuery,
  UseInfiniteQueryOptions,
  UseInfiniteQueryResult,
  useQuery as useReactQuery,
  UseQueryOptions,
  UseQueryResult,
  MutateOptions,
  useMutation as useReactQueryMutation,
  UseMutationOptions,
  UseMutationResult,
} from 'react-query'
import { useSession } from './auth'
import { FirstParam, PromiseReturnType, AsyncFunc } from '../types/utils'
import { isServer } from '../stdlib/index'
import {
  emptyQueryFn,
  getQueryCacheFunctions,
  getQueryKey,
  QueryCacheFunctions,
  sanitizeQuery,
  sanitizeMutation,
  getInfiniteQueryKey,
} from './react-query-utils'
import { useRouter } from '../client/router'

type QueryLazyOptions = { suspense: unknown } | { enabled: unknown }
type QueryNonLazyOptions =
  | { suspense: true; enabled?: never }
  | { suspense?: never; enabled: true }
  | { suspense: true; enabled: true }
  | { suspense?: never; enabled?: never }

// -------------------------
// useQuery
// -------------------------
type RestQueryResult<TResult, TError> = Omit<
  UseQueryResult<TResult, TError>,
  'data'
> &
  QueryCacheFunctions<TResult>

export function useQuery<
  T extends AsyncFunc,
  TResult = PromiseReturnType<T>,
  TError = unknown,
  TSelectedData = TResult
>(
  queryFn: T,
  params: FirstParam<T>,
  options?: UseQueryOptions<TResult, TError, TSelectedData> &
    QueryNonLazyOptions
): [TSelectedData, RestQueryResult<TSelectedData, TError>]
export function useQuery<
  T extends AsyncFunc,
  TResult = PromiseReturnType<T>,
  TError = unknown,
  TSelectedData = TResult
>(
  queryFn: T,
  params: FirstParam<T>,
  options: UseQueryOptions<TResult, TError, TSelectedData> & QueryLazyOptions
): [TSelectedData | undefined, RestQueryResult<TSelectedData, TError>]
export function useQuery<
  T extends AsyncFunc,
  TResult = PromiseReturnType<T>,
  TError = unknown,
  TSelectedData = TResult
>(
  queryFn: T,
  params: FirstParam<T>,
  options: UseQueryOptions<TResult, TError, TSelectedData> = {}
) {
  if (typeof queryFn === 'undefined') {
    throw new Error(
      'useQuery is missing the first argument - it must be a query function'
    )
  }

  const suspenseEnabled = Boolean(process.env.__BLITZ_SUSPENSE_ENABLED)
  let enabled =
    isServer && suspenseEnabled
      ? false
      : options?.enabled ?? options?.enabled !== null
  const suspense = enabled === false ? false : options?.suspense
  const session = useSession({ suspense })
  if (session.isLoading) {
    enabled = false
  }

  const routerIsReady = useRouter().isReady || (isServer && suspenseEnabled)
  const enhancedResolverRpcClient = sanitizeQuery(queryFn)
  const queryKey = getQueryKey(queryFn, params)

  const { data, ...queryRest } = useReactQuery({
    queryKey: routerIsReady ? queryKey : ['_routerNotReady_'],
    queryFn: routerIsReady
      ? () => enhancedResolverRpcClient(params, { fromQueryHook: true })
      : (emptyQueryFn as any),
    ...options,
    enabled,
  })

  if (
    queryRest.isIdle &&
    isServer &&
    suspenseEnabled !== false &&
    !data &&
    (!options || !('suspense' in options) || options.suspense) &&
    (!options || !('enabled' in options) || options.enabled)
  ) {
    throw new Promise(() => {})
  }

  const rest = {
    ...queryRest,
    ...getQueryCacheFunctions<FirstParam<T>, TResult, T>(queryFn, params),
  }

  // return [data, rest as RestQueryResult<TResult>]
  return [data, rest]
}

// -------------------------
// usePaginatedQuery
// -------------------------
type RestPaginatedResult<TResult, TError> = Omit<
  UseQueryResult<TResult, TError>,
  'data'
> &
  QueryCacheFunctions<TResult>

export function usePaginatedQuery<
  T extends AsyncFunc,
  TResult = PromiseReturnType<T>,
  TError = unknown,
  TSelectedData = TResult
>(
  queryFn: T,
  params: FirstParam<T>,
  options?: UseQueryOptions<TResult, TError, TSelectedData> &
    QueryNonLazyOptions
): [TSelectedData, RestPaginatedResult<TSelectedData, TError>]
export function usePaginatedQuery<
  T extends AsyncFunc,
  TResult = PromiseReturnType<T>,
  TError = unknown,
  TSelectedData = TResult
>(
  queryFn: T,
  params: FirstParam<T>,
  options: UseQueryOptions<TResult, TError, TSelectedData> & QueryLazyOptions
): [TSelectedData | undefined, RestPaginatedResult<TSelectedData, TError>]
export function usePaginatedQuery<
  T extends AsyncFunc,
  TResult = PromiseReturnType<T>,
  TError = unknown,
  TSelectedData = TResult
>(
  queryFn: T,
  params: FirstParam<T>,
  options: UseQueryOptions<TResult, TError, TSelectedData> = {}
) {
  if (typeof queryFn === 'undefined') {
    throw new Error(
      'usePaginatedQuery is missing the first argument - it must be a query function'
    )
  }

  const suspenseEnabled = Boolean(process.env.__BLITZ_SUSPENSE_ENABLED)
  let enabled =
    isServer && suspenseEnabled
      ? false
      : options?.enabled ?? options?.enabled !== null
  const suspense = enabled === false ? false : options?.suspense

  const session = useSession({ suspense })
  if (session.isLoading) {
    enabled = false
  }

  const routerIsReady = useRouter().isReady || (isServer && suspenseEnabled)
  const enhancedResolverRpcClient = sanitizeQuery(queryFn)
  const queryKey = getQueryKey(queryFn, params)

  const { data, ...queryRest } = useReactQuery({
    queryKey: routerIsReady ? queryKey : ['_routerNotReady_'],
    queryFn: routerIsReady
      ? () => enhancedResolverRpcClient(params, { fromQueryHook: true })
      : (emptyQueryFn as any),
    ...options,
    keepPreviousData: true,
    enabled,
  })

  if (
    queryRest.isIdle &&
    isServer &&
    suspenseEnabled !== false &&
    !data &&
    (!options || !('suspense' in options) || options.suspense) &&
    (!options || !('enabled' in options) || options.enabled)
  ) {
    throw new Promise(() => {})
  }

  const rest = {
    ...queryRest,
    ...getQueryCacheFunctions<FirstParam<T>, TResult, T>(queryFn, params),
  }

  // return [data, rest as RestPaginatedResult<TResult>]
  return [data, rest]
}

// -------------------------
// useInfiniteQuery
// -------------------------
interface RestInfiniteResult<TResult, TError>
  extends Omit<UseInfiniteQueryResult<TResult, TError>, 'data'>,
    QueryCacheFunctions<TResult> {
  pageParams: any
}

interface InfiniteQueryConfig<TResult, TError, TSelectedData>
  extends UseInfiniteQueryOptions<TResult, TError, TSelectedData, TResult> {
  // getPreviousPageParam?: (lastPage: TResult, allPages: TResult[]) => TGetPageParamResult
  // getNextPageParam?: (lastPage: TResult, allPages: TResult[]) => TGetPageParamResult
}

export function useInfiniteQuery<
  T extends AsyncFunc,
  TResult = PromiseReturnType<T>,
  TError = unknown,
  TSelectedData = TResult
>(
  queryFn: T,
  getQueryParams: (pageParam: any) => FirstParam<T>,
  options: InfiniteQueryConfig<TResult, TError, TSelectedData> &
    QueryNonLazyOptions
): [TSelectedData[], RestInfiniteResult<TSelectedData, TError>]
export function useInfiniteQuery<
  T extends AsyncFunc,
  TResult = PromiseReturnType<T>,
  TError = unknown,
  TSelectedData = TResult
>(
  queryFn: T,
  getQueryParams: (pageParam: any) => FirstParam<T>,
  options: InfiniteQueryConfig<TResult, TError, TSelectedData> &
    QueryLazyOptions
): [TSelectedData[] | undefined, RestInfiniteResult<TSelectedData, TError>]
export function useInfiniteQuery<
  T extends AsyncFunc,
  TResult = PromiseReturnType<T>,
  TError = unknown,
  TSelectedData = TResult
>(
  queryFn: T,
  getQueryParams: (pageParam: any) => FirstParam<T>,
  options: InfiniteQueryConfig<TResult, TError, TSelectedData>
) {
  if (typeof queryFn === 'undefined') {
    throw new Error(
      'useInfiniteQuery is missing the first argument - it must be a query function'
    )
  }

  const suspenseEnabled = Boolean(process.env.__BLITZ_SUSPENSE_ENABLED)
  let enabled =
    isServer && suspenseEnabled
      ? false
      : options?.enabled ?? options?.enabled !== null
  const suspense = enabled === false ? false : options?.suspense
  const session = useSession({ suspense })
  if (session.isLoading) {
    enabled = false
  }

  const routerIsReady = useRouter().isReady || (isServer && suspenseEnabled)
  const enhancedResolverRpcClient = sanitizeQuery(queryFn)
  const queryKey = getInfiniteQueryKey(queryFn, getQueryParams)

  const { data, ...queryRest } = useInfiniteReactQuery({
    // we need an extra cache key for infinite loading so that the cache for
    // for this query is stored separately since the hook result is an array of results.
    // Without this cache for usePaginatedQuery and this will conflict and break.
    queryKey: routerIsReady ? queryKey : ['_routerNotReady_'],
    queryFn: routerIsReady
      ? ({ pageParam }) =>
          enhancedResolverRpcClient(getQueryParams(pageParam), {
            fromQueryHook: true,
          })
      : (emptyQueryFn as any),
    ...options,
    enabled,
  })

  if (
    queryRest.isIdle &&
    isServer &&
    suspenseEnabled !== false &&
    !data &&
    (!options || !('suspense' in options) || options.suspense) &&
    (!options || !('enabled' in options) || options.enabled)
  ) {
    throw new Promise(() => {})
  }

  const rest = {
    ...queryRest,
    ...getQueryCacheFunctions<FirstParam<T>, TResult, T>(
      queryFn,
      getQueryParams
    ),
    pageParams: data?.pageParams,
  }

  return [data?.pages as any, rest]
}

// -------------------------------------------------------------------
//                       useMutation
// -------------------------------------------------------------------

/*
 * We have to override react-query's MutationFunction and MutationResultPair
 * types so because we have throwOnError:true by default. And by the RQ types
 * have the mutate function result typed as TData|undefined which isn't typed
 * properly with throwOnError.
 *
 * So this fixes that.
 */
export declare type MutateFunction<
  TData,
  TError = unknown,
  TVariables = unknown,
  TContext = unknown
> = (
  variables?: TVariables,
  config?: MutateOptions<TData, TError, TVariables, TContext>
) => Promise<TData>

export declare type MutationResultPair<TData, TError, TVariables, TContext> = [
  MutateFunction<TData, TError, TVariables, TContext>,
  Omit<UseMutationResult<TData, TError>, 'mutate' | 'mutateAsync'>
]

export declare type MutationFunction<TData, TVariables = unknown> = (
  variables: TVariables,
  ctx?: any
) => Promise<TData>

export function useMutation<
  TData = unknown,
  TError = unknown,
  TVariables = void,
  TContext = unknown
>(
  mutationResolver: MutationFunction<TData, TVariables>,
  config?: UseMutationOptions<TData, TError, TVariables, TContext>
): MutationResultPair<TData, TError, TVariables, TContext> {
  const enhancedResolverRpcClient = sanitizeMutation(mutationResolver)

  const { mutate, mutateAsync, ...rest } = useReactQueryMutation<
    TData,
    TError,
    TVariables,
    TContext
  >(
    (variables) =>
      enhancedResolverRpcClient(variables, { fromQueryHook: true }),
    {
      throwOnError: true,
      ...config,
    } as any
  )

  return [mutateAsync, rest] as MutationResultPair<
    TData,
    TError,
    TVariables,
    TContext
  >
}