feat(frontend): implement basic frontend interface

2026-09-08 23:15:50 +08:00
parent 8b43e8b2ea
commit 378727ac57
29 changed files with 5190 additions and 0 deletions
@@ -0,0 +1,43 @@
+// Severity levels as sent by the backend log websocket (see postLog package):
+// 0=DEBUG 1=INFO 2=WARN 3=ERROR 4=FATAL
+export const LOG_LEVELS = [
+    { key: 'DEBUG', value: 0 },
+    { key: 'INFO', value: 1 },
+    { key: 'WARN', value: 2 },
+    { key: 'ERROR', value: 3 },
+    { key: 'FATAL', value: 4 }
+];
+
+export const levelOf = (value) => LOG_LEVELS.find((l) => l.value === value) || { key: 'LOG', value };
+
+export function formatBytes(n, digits = 1) {
+    if (n === null || n === undefined || Number.isNaN(n)) return '-';
+    if (n < 1024) return `${Math.round(n)} B`;
+    const units = ['KB', 'MB', 'GB', 'TB', 'PB'];
+    let v = n;
+    let u = -1;
+    do {
+        v /= 1024;
+        u += 1;
+    } while (v >= 1024 && u < units.length - 1);
+    return `${v.toFixed(digits)} ${units[u]}`;
+}
+
+export function formatPercent(used, total) {
+    if (!total) return '—';
+    return `${Math.min(100, Math.max(0, Math.round((used / total) * 100)))}%`;
+}
+
+export function shortUUID(uuid = '') {
+    if (!uuid) return '';
+    if (uuid.length <= 13) return uuid;
+    return `${uuid.slice(0, 8)}…${uuid.slice(-4)}`;
+}
+
+// Online/offline counts + aggregate online ratio. Report arrays carry the
+// report; when absent the server has no live telemetry yet.
+export function sumUp(entries) {
+    const total = entries.length;
+    const online = entries.filter((e) => e.online).length;
+    return { total, online, offline: total - online };
+}