Initial commit: Sproutlink short URL system

web/src/ipRuleHelpers.ts

@@ -0,0 +1,26 @@
+import type { IpRule } from './api';
+
+const MAX_IPS = 200;
+
+/** 从表单生成 IpRule，未选模式或内容为空时返回 null */
+export function buildIpRule(mode: '' | 'allow' | 'block', text: string): IpRule | null {
+  if (mode !== 'allow' && mode !== 'block') return null;
+  const ips = text
+    .split(/[\n,;，]+/u)
+    .map(s => s.trim())
+    .filter(Boolean)
+    .slice(0, MAX_IPS);
+  if (ips.length === 0) return null;
+  return { mode, ips };
+}
+
+export function parseIpRuleText(json: string | null | undefined): { mode: '' | 'allow' | 'block'; text: string } {
+  if (!json) return { mode: '', text: '' };
+  try {
+    const r = JSON.parse(json) as IpRule;
+    if (r.mode !== 'allow' && r.mode !== 'block') return { mode: '', text: '' };
+    return { mode: r.mode, text: (r.ips ?? []).join('\n') };
+  } catch {
+    return { mode: '', text: '' };
+  }
+}