elk/plugins/setup-color-mode.ts

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import type { ColorMode } from '~/types'
import { InjectionKeyColorMode } from '~/constants/symbols'
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import { COOKIE_KEY_COLOR_MODE, COOKIE_MAX_AGE } from '~/constants'
export default defineNuxtPlugin((nuxt) => {
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const cookieColorMode = useCookie<ColorMode | null>(COOKIE_KEY_COLOR_MODE, { maxAge: COOKIE_MAX_AGE })
const preferColorMode = process.server ? computed(() => 'light') : usePreferredColorScheme()
const colorMode = computed<ColorMode>({
get() {
return cookieColorMode.value || preferColorMode.value as ColorMode
},
set(value) {
cookieColorMode.value = value
},
})
nuxt.vueApp.provide(InjectionKeyColorMode, colorMode)
if (process.server) {
useHead({
htmlAttrs: {
class: colorMode,
},
})
}
else {
watchEffect(() => {
document.documentElement.classList.toggle('dark', colorMode.value === 'dark')
document.documentElement.classList.toggle('light', colorMode.value === 'light')
})
}
useHead({
meta: [{
id: 'theme-color',
name: 'theme-color',
content: computed(() => colorMode.value === 'dark' ? '#111111' : '#ffffff'),
}],
})
})