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File "use-backend-bootstrap-data.ts"

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import {apiClient, queryClient} from '../../http/query-client';
import {BootstrapData} from './bootstrap-data';
import {keepPreviousData, useQuery} from '@tanstack/react-query';

const queryKey = ['bootstrapData'];

export function getBootstrapData(): BootstrapData {
  return queryClient.getQueryData(queryKey)!;
}

export function invalidateBootstrapData() {
  queryClient.invalidateQueries({queryKey});
}

export function setBootstrapData(data: string | BootstrapData) {
  queryClient.setQueryData<BootstrapData>(
    queryKey,
    typeof data === 'string' ? decodeBootstrapData(data) : data,
  );
}

export function mergeBootstrapData(partialData: Partial<BootstrapData>) {
  setBootstrapData({
    ...getBootstrapData(),
    ...partialData,
  });
}

// set bootstrap data that was provided with initial request from backend
const initialBootstrapData = (
  typeof window !== 'undefined' && window.bootstrapData
    ? decodeBootstrapData(window.bootstrapData)
    : undefined
) as BootstrapData;

// make sure initial data is available right away when accessing it via "getBootstrapData()"
queryClient.setQueryData(queryKey, initialBootstrapData);

export function useBackendBootstrapData() {
  return useQuery({
    queryKey: queryKey,
    queryFn: () => fetchBootstrapData(),
    staleTime: Infinity,
    placeholderData: keepPreviousData,
    initialData: initialBootstrapData,
  });
}

const fetchBootstrapData = async (): Promise<BootstrapData> => {
  return apiClient
    .get('http://bedesk.test/api/v1/bootstrap-data')
    .then(response => {
      return decodeBootstrapData(response.data.data);
    });
};

function decodeBootstrapData(data: string | BootstrapData): BootstrapData {
  return typeof data === 'string' ? JSON.parse(data) : data;
}