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<script lang="ts">
import { imageCache } from '../cache';
import { autoCacheService } from '../cache';
import { fly } from 'svelte/transition';
interface CacheStats {
entries: number;
fullCount: number;
thumbCount: number;
totalBytes: number;
maxBytes: number;
idbEntries: number;
idbBytes: number;
idbError: string | undefined;
idbLastWriteError: string | undefined;
idbWriteErrorCount: number;
}
let stats = $state<CacheStats | undefined>(undefined);
let idbBudgetPct = $derived(
stats !== undefined && stats.maxBytes > 0
? (stats.idbBytes / stats.maxBytes * 100)
: 0
);
let budgetPct = $derived(
stats !== undefined && stats.maxBytes > 0
? (stats.totalBytes / stats.maxBytes * 100)
: 0
);
function formatBytes(bytes: number): string {
if (bytes === 0) return '0 B';
const k = 1024;
const sizes = ['B', 'KB', 'MB', 'GB'];
const i = Math.floor(Math.log(bytes) / Math.log(k));
const val = bytes / Math.pow(k, i);
return `${val.toFixed(1)} ${sizes[i]}`;
}
let downloadSpeed = $state(0);
async function refresh() {
try {
stats = await imageCache.getStats();
} catch {
// ignore
}
downloadSpeed = autoCacheService.downloadSpeed;
}
$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"
transition:fly={{ x: -320, duration: 250 }}
>
<div class="font-bold text-sm mb-2">Cache Debug</div>
{#if stats !== undefined}
<div class="space-y-2">
<!-- Download Speed -->
<div>
<span class="font-semibold">DL Speed:</span>
{#if downloadSpeed > 0}
<span class="text-info">{formatBytes(downloadSpeed)}/s</span>
{:else}
<span class="text-base-content/50">N/A</span>
{/if}
</div>
<!-- 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> / {formatBytes(stats.maxBytes)}</div>
<div>
<progress class="progress progress-primary w-full h-1.5" value={budgetPct} max="100"></progress>
<span class="text-[10px]" class:text-error={budgetPct > 90} class:text-warning={budgetPct > 70 && budgetPct <= 90}>{budgetPct.toFixed(1)}% of budget</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> / {formatBytes(stats.maxBytes)}</div>
<div>
<progress class="progress progress-secondary w-full h-1.5" value={idbBudgetPct} max="100"></progress>
<span class="text-[10px]" class:text-error={idbBudgetPct > 90} class:text-warning={idbBudgetPct > 70 && idbBudgetPct <= 90}>{idbBudgetPct.toFixed(1)}% of budget</span>
</div>
{#if stats.idbWriteErrorCount > 0}
<div class="text-error mt-1">{stats.idbWriteErrorCount} write errors</div>
{#if stats.idbLastWriteError !== undefined}
<div class="text-error text-[10px] break-all">{stats.idbLastWriteError}</div>
{/if}
{/if}
<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}
<div class="text-base-content/50">Loading…</div>
{/if}
</div>
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