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import { usePreferredLanguages, useStorage } from '@vueuse/core'
import { useJwt } from '@vueuse/integrations/useJwt'
import type { JwtPayload } from 'jwt-decode'
import type { State, StoredState } from './types'
import { computed, ref, toRefs, useNuxtApp, useTimestamp } from '#imports'
import type { User } from '~/lib'
const storageKey = 'nocodb-gui-v2'
export function useGlobalState(): State {
/** get the preferred languages of a user, according to browser settings */
const preferredLanguages = $(usePreferredLanguages())
/** todo: reimplement; get the preferred dark mode setting, according to browser settings */
// const prefersDarkMode = $(usePreferredDark())
const prefersDarkMode = false
/** reactive timestamp to check token expiry against */
const timestamp = useTimestamp({ immediate: true, interval: 100 })
const {
vueApp: { i18n },
} = useNuxtApp()
/**
* Set initial language based on browser settings.
* If the user has not set a preferred language, we fallback to 'en'.
* If the user has set a preferred language, we try to find a matching locale in the available locales.
*/
const preferredLanguage = preferredLanguages.reduce<string>((locale, language) => {
/** split language to language and code, e.g. en-GB -> [en, GB] */
const [lang, code] = language.split(/[_-]/)
/** find all locales that match the language */
let availableLocales = i18n.availableLocales.filter((locale) => locale.startsWith(lang))
/** If we can match more than one locale, we check if the code of the language matches as well */
if (availableLocales.length > 1) {
availableLocales = availableLocales.filter((locale) => locale.endsWith(code))
}
/** if there are still multiple locales, pick the first one */
const availableLocale = availableLocales[0]
/** if we found a matching locale, return it */
if (availableLocale) locale = availableLocale
return locale
}, 'en' /** fallback locale */)
/** State */
const initialState: StoredState = { token: null, user: null, lang: preferredLanguage, darkMode: prefersDarkMode }
/** saves a reactive state, any change to these values will write/delete to localStorage */
const storage = useStorage<StoredState>(storageKey, initialState)
/** force turn off of dark mode, regardless of previously stored settings */
storage.value.darkMode = false
/** current token ref, used by `useJwt` to reactively parse our token payload */
const token = computed({
get: () => storage.value.token || '',
set: (val) => (storage.value.token = val),
})
/** reactive token payload */
const { payload } = useJwt<JwtPayload & User>(token.value)
/** is sidebar open */
const sidebarOpen = ref(false)
/** currently running requests */
const runningRequests = ref<number[]>([])
/** global error */
const error = ref()
return {
...toRefs(storage.value),
token,
jwtPayload: payload,
sidebarOpen,
timestamp,
runningRequests,
error,
}
}