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