elk/plugins/setup-i18n.ts

47 lines
1.6 KiB
TypeScript

import type { VueI18n } from 'vue-i18n'
import type { LocaleObject } from 'vue-i18n-routing'
import { COOKIE_KEY_LOCALE, COOKIE_MAX_AGE, DEFAULT_LANGUAGE } from '~/constants'
export default defineNuxtPlugin(async (nuxt) => {
const i18n = nuxt.vueApp.config.globalProperties.$i18n as VueI18n
const { setLocale, locales } = i18n
const supportLanguages = (locales as LocaleObject[]).map(locale => locale.code)
const cookieLocale = useCookie(COOKIE_KEY_LOCALE, { maxAge: COOKIE_MAX_AGE })
const userSettings = useUserSettings()
if (process.server) {
const headers = useRequestHeaders()
let lang = cookieLocale.value
if (!lang || !supportLanguages.includes(lang)) {
// first visit
if (headers['accept-language']) {
// detect language from header
const userLanguages = headers['accept-language'].split(',').map(lang => lang.split(';')[0].toLowerCase())
lang = matchLanguages(supportLanguages, userLanguages) || DEFAULT_LANGUAGE
}
else {
lang = DEFAULT_LANGUAGE
}
}
userSettings.value.language = cookieLocale.value = lang
if (lang !== i18n.locale)
await setLocale(cookieLocale.value)
return
}
// could be null if browser don't accept cookie
if (!cookieLocale.value || !supportLanguages.includes(cookieLocale.value))
cookieLocale.value = DEFAULT_LANGUAGE
userSettings.value.language = cookieLocale.value
watch(() => userSettings.value.language, (lang) => {
if (lang !== cookieLocale.value)
cookieLocale.value = lang
if (lang !== i18n.locale)
setLocale(lang)
}, { immediate: true })
})