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42 lines
1.1 KiB
42 lines
1.1 KiB
import { ref, onMounted, watch } from 'vue';
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const THEME_KEY = 'theme';
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const THEMES = {
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LIGHT: 'light',
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DARK: 'dark'
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} as const;
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export const useTheme = () => {
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const isDark = ref(false);
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const setTheme = (theme: typeof THEMES[keyof typeof THEMES]) => {
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document.documentElement.setAttribute('data-theme', theme);
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localStorage.setItem(THEME_KEY, theme);
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isDark.value = theme === THEMES.DARK;
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};
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const toggleTheme = () => {
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setTheme(isDark.value ? THEMES.LIGHT : THEMES.DARK);
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};
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onMounted(() => {
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const savedTheme = localStorage.getItem(THEME_KEY) as typeof THEMES[keyof typeof THEMES] | null;
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const prefersDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
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if (savedTheme) {
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setTheme(savedTheme);
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} else {
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setTheme(prefersDark ? THEMES.DARK : THEMES.LIGHT);
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}
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});
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watch(() => window.matchMedia('(prefers-color-scheme: dark)').matches, (isDarkMode) => {
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if (!localStorage.getItem(THEME_KEY)) {
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setTheme(isDarkMode ? THEMES.DARK : THEMES.LIGHT);
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}
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});
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return {
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isDark,
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toggleTheme
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};
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}; |