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<script lang="ts">
import { imageCache } from '../cache';
interface CacheStats {
entries: number;
fullCount: number;
thumbCount: number;
totalBytes: number;
idbEntries: number;
idbBytes: number;
idbError: string | undefined;
}
let stats = $state<CacheStats | undefined>(undefined);
let refreshing = $state(false);
let collapsed = $state(false);
function formatBytes(bytes: number): string {
if (bytes === 0) return '0 B';
const k = 1024;
const sizes = ['B', 'KB', 'MB', 'GB'];
const i = Math.floor(Math.log(bytes) / Math.log(k));
const val = bytes / Math.pow(k, i);
return `${val.toFixed(1)} ${sizes[i]}`;
}
async function refresh() {
refreshing = true;
try {
stats = await imageCache.getStats();
} catch { /* ignore */ }
refreshing = false;
}
$effect(() => {
void refresh();
const id = setInterval(() => { void refresh(); }, 2000);
return () => clearInterval(id);
});
</script>
<div class="fixed top-2 left-2 z-50 bg-base-100/95 backdrop-blur-sm rounded-box shadow-lg border border-base-300 p-3 text-xs font-mono max-w-80 pointer-events-auto">
<button
class="flex items-center justify-between w-full mb-1"
onclick={() => collapsed = !collapsed}
>
<span class="font-bold text-sm">Cache Debug</span>
<span class="text-base-content/50">{collapsed ? '▶' : '▼'}</span>
</button>
{#if !collapsed && stats !== undefined}
<div class="space-y-2">
<!-- Memory Cache -->
<div>
<div class="font-semibold text-primary">Memory Cache</div>
<div>Entries: <span class="text-info">{stats.entries}</span> ({stats.fullCount} full, {stats.thumbCount} thumb)</div>
<div>Size: <span class="text-info">{formatBytes(stats.totalBytes)}</span></div>
</div>
<!-- IndexedDB -->
<div class="border-t border-base-300 pt-2">
<div class="font-semibold text-secondary">IndexedDB</div>
{#if stats.idbError !== undefined}
<div class="text-error">Error: {stats.idbError}</div>
{:else}
<div>Entries: <span class="text-info">{stats.idbEntries}</span></div>
<div>Size: <span class="text-info">{formatBytes(stats.idbBytes)}</span></div>
<div class="mt-1">
{#if stats.idbEntries === stats.entries}
<span class="text-success">✅ In sync with memory</span>
{:else if stats.idbEntries < stats.entries}
<span class="text-warning">⏳ IDB behind ({stats.entries - stats.idbEntries} pending)</span>
{:else}
<span class="text-info">IDB has {stats.idbEntries - stats.entries} extra (pre-loaded)</span>
{/if}
</div>
{/if}
</div>
</div>
{:else if !collapsed}
<div class="text-base-content/50">
{#if refreshing}Loading…{:else}No data{/if}
</div>
{/if}
</div>
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