Initial open source release

lib/wx.ts

@@ -0,0 +1,89 @@
+import { execFile } from 'node:child_process';
+import { promisify } from 'node:util';
+import type {
+  WxDaemonStatus,
+  WxMember,
+  WxMessage,
+  WxNewMessage,
+  WxSession,
+  WxStats,
+} from './wx-types';
+
+const run = promisify(execFile);
+
+const DEFAULT_OPTS = {
+  maxBuffer: 64 * 1024 * 1024,
+  timeout: 60_000,
+} as const;
+
+async function wxRaw(args: string[], opts = DEFAULT_OPTS): Promise<string> {
+  const { stdout } = await run('wx', args, opts);
+  return stdout;
+}
+
+async function wxJson<T>(args: string[], opts = DEFAULT_OPTS): Promise<T> {
+  const stdout = await wxRaw([...args, '--json'], opts);
+  return JSON.parse(stdout) as T;
+}
+
+export async function wxSessions(limit = 500): Promise<WxSession[]> {
+  return wxJson<WxSession[]>(['sessions', '-n', String(limit)]);
+}
+
+export async function wxStats(
+  chat: string,
+  since: string,
+  until: string,
+): Promise<WxStats> {
+  return wxJson<WxStats>(['stats', chat, '--since', since, '--until', until]);
+}
+
+export async function wxHistory(
+  chat: string,
+  since: string,
+  until: string,
+  limit = 1000,
+): Promise<WxMessage[]> {
+  return wxJson<WxMessage[]>([
+    'history',
+    chat,
+    '--since',
+    since,
+    '--until',
+    until,
+    '-n',
+    String(limit),
+  ]);
+}
+
+export async function wxNewMessages(limit = 50): Promise<WxNewMessage[]> {
+  return wxJson<WxNewMessage[]>(['new-messages', '-n', String(limit)]);
+}
+
+export async function wxMembers(chat: string): Promise<WxMember[]> {
+  return wxJson<WxMember[]>(['members', chat]);
+}
+
+export async function wxDaemonStatus(): Promise<WxDaemonStatus> {
+  try {
+    const out = await wxRaw(['daemon', 'status']);
+    const lower = out.toLowerCase();
+    const running = lower.includes('running') || lower.includes('运行');
+    const pidMatch = out.match(/pid[^\d]*(\d+)/i);
+    return {
+      running,
+      pid: pidMatch ? Number(pidMatch[1]) : undefined,
+    };
+  } catch {
+    return { running: false };
+  }
+}
+
+export async function wxAvailable(): Promise<boolean> {
+  try {
+    await run('wx', ['--version'], { timeout: 5_000 });
+    return true;
+  } catch {
+    return false;
+  }
+}