supabase/apps/studio/hooks/misc/useLocalStorage.ts

// Reference: https://usehooks.com/useLocalStorage/

import { useQuery, useQueryClient } from '@tanstack/react-query'
import { Dispatch, SetStateAction, useState } from 'react'

export function useLocalStorage<T>(key: string, initialValue: T) {
  // State to store our value
  // Pass initial state function to useState so logic is only executed once
  const [storedValue, setStoredValue] = useState<T>(() => {
    if (typeof window === 'undefined') {
      return initialValue
    }

    try {
      // Get from local storage by key
      const item = window.localStorage.getItem(key)
      // Parse stored json or if none return initialValue
      return item ? JSON.parse(item) : initialValue
    } catch (error) {
      // If error also return initialValue
      console.log(error)
      return initialValue
    }
  })

  // Return a wrapped version of useState's setter function that ...
  // ... persists the new value to localStorage.
  const setValue = (value: T | ((val: T) => T)) => {
    try {
      // Allow value to be a function so we have same API as useState
      const valueToStore = value instanceof Function ? value(storedValue) : value
      // Save state
      setStoredValue(valueToStore)
      // Save to local storage
      if (typeof window !== 'undefined') {
        window.localStorage.setItem(key, JSON.stringify(valueToStore))
      }
    } catch (error) {
      // A more advanced implementation would handle the error case
      console.log(error)
    }
  }

  return [storedValue, setValue] as const
}

/**
 * Hook to load/store values from local storage with an API similar
 * to `useState()`.
 *
 * Differs from `useLocalStorage()` in that it uses `react-query` to
 * invalidate stale values across hooks with the same key.
 */
export function useLocalStorageQuery<T>(key: string, initialValue: T) {
  const queryClient = useQueryClient()
  const queryKey = ['localStorage', key]

  const { data: storedValue = initialValue } = useQuery(queryKey, () => {
    if (typeof window === 'undefined') {
      return initialValue
    }

    const item = window.localStorage.getItem(key)

    if (!item) {
      return initialValue
    }

    return JSON.parse(item) as T
  })

  const setValue: Dispatch<SetStateAction<T>> = (value) => {
    const valueToStore = value instanceof Function ? value(storedValue) : value

    if (typeof window !== 'undefined') {
      window.localStorage.setItem(key, JSON.stringify(valueToStore))
    }

    queryClient.setQueryData(queryKey, valueToStore)
    queryClient.invalidateQueries(queryKey)
  }

  return [storedValue, setValue] as const
}