Sebastian Krüger
2000623c67
- Add Figlet text converter with font selection and history - Add Pastel color palette generator and manipulation suite - Add comprehensive Units converter with category-based logic - Introduce AppShell with Sidebar and Header for navigation - Modernize theme system with CSS variables and new animations - Update project configuration and dependencies
116 lines
2.4 KiB
TypeScript
116 lines
2.4 KiB
TypeScript
/**
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* LocalStorage utilities for persisting user data
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*/
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export interface ConversionRecord {
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id: string;
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timestamp: number;
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from: {
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value: number;
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unit: string;
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};
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to: {
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value: number;
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unit: string;
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};
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measure: string;
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}
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const HISTORY_KEY = 'units-ui-history';
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const FAVORITES_KEY = 'units-ui-favorites';
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const MAX_HISTORY = 50;
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/**
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* Save conversion to history
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*/
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export function saveToHistory(record: Omit<ConversionRecord, 'id' | 'timestamp'>): void {
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if (typeof window === 'undefined') return;
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const history = getHistory();
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const newRecord: ConversionRecord = {
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...record,
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id: crypto.randomUUID(),
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timestamp: Date.now(),
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};
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// Add to beginning and limit size
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const updated = [newRecord, ...history].slice(0, MAX_HISTORY);
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localStorage.setItem(HISTORY_KEY, JSON.stringify(updated));
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}
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/**
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* Get conversion history
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*/
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export function getHistory(): ConversionRecord[] {
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if (typeof window === 'undefined') return [];
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try {
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const stored = localStorage.getItem(HISTORY_KEY);
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return stored ? JSON.parse(stored) : [];
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} catch {
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return [];
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}
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}
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/**
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* Clear conversion history
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*/
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export function clearHistory(): void {
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if (typeof window === 'undefined') return;
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localStorage.removeItem(HISTORY_KEY);
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}
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/**
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* Get favorite units
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*/
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export function getFavorites(): string[] {
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if (typeof window === 'undefined') return [];
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try {
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const stored = localStorage.getItem(FAVORITES_KEY);
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return stored ? JSON.parse(stored) : [];
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} catch {
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return [];
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}
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}
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/**
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* Add unit to favorites
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*/
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export function addToFavorites(unit: string): void {
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if (typeof window === 'undefined') return;
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const favorites = getFavorites();
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if (!favorites.includes(unit)) {
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favorites.push(unit);
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localStorage.setItem(FAVORITES_KEY, JSON.stringify(favorites));
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}
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}
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/**
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* Remove unit from favorites
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*/
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export function removeFromFavorites(unit: string): void {
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if (typeof window === 'undefined') return;
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const favorites = getFavorites();
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const filtered = favorites.filter(u => u !== unit);
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localStorage.setItem(FAVORITES_KEY, JSON.stringify(filtered));
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}
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/**
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* Toggle favorite status
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*/
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export function toggleFavorite(unit: string): boolean {
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const favorites = getFavorites();
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const isFavorite = favorites.includes(unit);
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if (isFavorite) {
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removeFromFavorites(unit);
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return false;
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} else {
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addToFavorites(unit);
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return true;
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}
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}
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