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feat(theme): listen to system color-scheme changes and persist user p… #64

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Merged
arine merged 1 commit into from
Mar 30, 2026
Merged

feat(theme): listen to system color-scheme changes and persist user p… #64

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14 changes: 14 additions & 0 deletions client/src/app/services/theme.service.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ export class ThemeService {

constructor() {
this.applyClass(this.isDark());
this.listenToSystemTheme();
}

toggle() {
Expand All @@ -25,4 +26,17 @@ export class ThemeService {
if (stored) return stored === 'dark';
return window.matchMedia?.('(prefers-color-scheme: dark)').matches ?? false;
}

private listenToSystemTheme(): void {
const mediaQuery = window.matchMedia?.('(prefers-color-scheme: dark)');
if (!mediaQuery) return;

mediaQuery.addEventListener('change', (event) => {
// Only follow system changes if the user hasn't set a manual preference
if (!localStorage.getItem(this.STORAGE_KEY)) {
this.isDark.set(event.matches);
this.applyClass(event.matches);
}
});
}
}
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