feat: implement cache management system with statistics and clearing functionality
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GitHub
223
app/components/CacheManagement.tsx
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223
app/components/CacheManagement.tsx
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'use client';
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import React, { useState, useEffect } from 'react';
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import { Button } from '@/components/ui/button';
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import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
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import { Label } from '@/components/ui/label';
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import {
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Database,
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Trash2,
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RefreshCw,
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HardDrive
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} from 'lucide-react';
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import { CacheManager } from '@/lib/cache';
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export function CacheManagement() {
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const [cacheStats, setCacheStats] = useState({
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total: 0,
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expired: 0,
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size: '0 B'
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});
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const [isClearing, setIsClearing] = useState(false);
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const [lastCleared, setLastCleared] = useState<string | null>(null);
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const loadCacheStats = () => {
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if (typeof window === 'undefined') return;
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let total = 0;
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let expired = 0;
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let totalSize = 0;
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const now = Date.now();
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// Check localStorage for cache entries
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for (let i = 0; i < localStorage.length; i++) {
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const key = localStorage.key(i);
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if (key && (key.startsWith('cache-') || key.startsWith('navidrome-cache-') || key.startsWith('library-cache-'))) {
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total++;
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const value = localStorage.getItem(key);
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if (value) {
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totalSize += key.length + value.length;
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try {
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const parsed = JSON.parse(value);
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if (parsed.expiresAt && now > parsed.expiresAt) {
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expired++;
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}
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} catch (error) {
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expired++;
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}
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}
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}
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}
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// Convert bytes to human readable format
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const formatSize = (bytes: number): string => {
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if (bytes === 0) return '0 B';
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const k = 1024;
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const sizes = ['B', 'KB', 'MB', 'GB'];
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const i = Math.floor(Math.log(bytes) / Math.log(k));
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return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
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};
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setCacheStats({
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total,
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expired,
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size: formatSize(totalSize * 2) // *2 for UTF-16 encoding
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});
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};
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useEffect(() => {
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loadCacheStats();
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// Check if there's a last cleared timestamp
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const lastClearedTime = localStorage.getItem('cache-last-cleared');
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if (lastClearedTime) {
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setLastCleared(new Date(parseInt(lastClearedTime)).toLocaleString());
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}
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}, []);
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const handleClearCache = async () => {
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setIsClearing(true);
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try {
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// Clear all cache using the CacheManager
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CacheManager.clearAll();
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// Also clear any other cache-related localStorage items
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if (typeof window !== 'undefined') {
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const keys = Object.keys(localStorage);
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keys.forEach(key => {
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if (key.startsWith('cache-') ||
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key.startsWith('navidrome-cache-') ||
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key.startsWith('library-cache-') ||
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key.includes('album') ||
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key.includes('artist') ||
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key.includes('song')) {
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localStorage.removeItem(key);
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}
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});
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// Set last cleared timestamp
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localStorage.setItem('cache-last-cleared', Date.now().toString());
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}
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// Update stats
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loadCacheStats();
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setLastCleared(new Date().toLocaleString());
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// Show success feedback
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setTimeout(() => {
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setIsClearing(false);
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}, 1000);
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} catch (error) {
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console.error('Failed to clear cache:', error);
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setIsClearing(false);
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}
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};
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const handleCleanExpired = () => {
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if (typeof window === 'undefined') return;
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const now = Date.now();
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const keysToRemove: string[] = [];
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for (let i = 0; i < localStorage.length; i++) {
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const key = localStorage.key(i);
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if (key && (key.startsWith('cache-') || key.startsWith('navidrome-cache-') || key.startsWith('library-cache-'))) {
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try {
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const value = localStorage.getItem(key);
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if (value) {
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const parsed = JSON.parse(value);
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if (parsed.expiresAt && now > parsed.expiresAt) {
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keysToRemove.push(key);
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}
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}
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} catch (error) {
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// Invalid cache item, remove it
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keysToRemove.push(key);
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}
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}
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}
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keysToRemove.forEach(key => localStorage.removeItem(key));
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loadCacheStats();
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};
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return (
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<Card className="break-inside-avoid">
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<CardHeader>
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<CardTitle className="flex items-center gap-2">
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<Database className="h-5 w-5" />
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Cache Management
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</CardTitle>
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<CardDescription>
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Manage application cache to improve performance and free up storage
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</CardDescription>
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</CardHeader>
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<CardContent className="space-y-4">
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{/* Cache Statistics */}
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<div className="grid grid-cols-3 gap-4 text-center">
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<div className="space-y-1">
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<p className="text-2xl font-bold">{cacheStats.total}</p>
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<p className="text-xs text-muted-foreground">Total Items</p>
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</div>
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<div className="space-y-1">
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<p className="text-2xl font-bold">{cacheStats.expired}</p>
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<p className="text-xs text-muted-foreground">Expired</p>
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</div>
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<div className="space-y-1">
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<p className="text-2xl font-bold">{cacheStats.size}</p>
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<p className="text-xs text-muted-foreground">Storage Used</p>
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</div>
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</div>
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{/* Cache Actions */}
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<div className="space-y-2">
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<div className="flex gap-2">
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<Button
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onClick={handleClearCache}
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disabled={isClearing}
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variant="destructive"
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size="sm"
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className="flex-1"
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>
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{isClearing ? (
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<RefreshCw className="h-4 w-4 mr-2 animate-spin" />
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) : (
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<Trash2 className="h-4 w-4 mr-2" />
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)}
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{isClearing ? 'Clearing...' : 'Clear All Cache'}
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</Button>
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<Button
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onClick={handleCleanExpired}
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variant="outline"
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size="sm"
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className="flex-1"
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>
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<HardDrive className="h-4 w-4 mr-2" />
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Clean Expired
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</Button>
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</div>
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<Button
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onClick={loadCacheStats}
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variant="ghost"
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size="sm"
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className="w-full"
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>
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<RefreshCw className="h-4 w-4 mr-2" />
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Refresh Stats
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</Button>
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</div>
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{/* Cache Info */}
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<div className="text-sm text-muted-foreground space-y-1">
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<p>Cache includes albums, artists, songs, and image URLs to improve loading times.</p>
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{lastCleared && (
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<p>Last cleared: {lastCleared}</p>
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)}
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</div>
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</CardContent>
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</Card>
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);
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}
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