feat(weixin): show typing indicator during turns

test/channels/weixin/weixin-api.test.mjs

@@ -208,6 +208,103 @@ test('sendText emits the iLink message envelope without reflecting the token in
   assert.doesNotMatch(calls[0].init.body, /host-only-token/);
 });
 
+test('getConfig requests a typing ticket for the current Weixin conversation', async () => {
+  const calls = [];
+  const api = createWeixinApi({
+    fetchImpl: async (url, init) => {
+      calls.push({ url: url.toString(), init });
+      return jsonResponse({ ret: 0, typing_ticket: 'typing-ticket' });
+    },
+  });
+
+  const config = await api.getConfig({
+    baseUrl: 'https://ilinkai.weixin.qq.com',
+    token: 'host-only-token',
+    toUserId: 'wx-user',
+    contextToken: 'message-context',
+  });
+
+  assert.deepEqual(config, { typingTicket: 'typing-ticket' });
+  assert.match(calls[0].url, /\/ilink\/bot\/getconfig$/);
+  assert.equal(calls[0].init.headers.Authorization, 'Bearer host-only-token');
+  const body = JSON.parse(calls[0].init.body);
+  assert.equal(body.ilink_user_id, 'wx-user');
+  assert.equal(body.context_token, 'message-context');
+  assert.equal(body.base_info.channel_version, '2.4.6');
+  assert.doesNotMatch(calls[0].init.body, /host-only-token/);
+});
+
+test('sendTyping sends start and cancel states with the cached ticket', async () => {
+  const calls = [];
+  const api = createWeixinApi({
+    fetchImpl: async (url, init) => {
+      calls.push({ url: url.toString(), init });
+      return jsonResponse({ ret: 0 });
+    },
+  });
+
+  for (const status of [1, 2]) {
+    await api.sendTyping({
+      baseUrl: 'https://ilinkai.weixin.qq.com',
+      token: 'host-only-token',
+      toUserId: 'wx-user',
+      typingTicket: 'typing-ticket',
+      status,
+    });
+  }
+
+  assert.deepEqual(calls.map(({ url, init }) => {
+    const body = JSON.parse(init.body);
+    return {
+      path: new URL(url).pathname,
+      user: body.ilink_user_id,
+      ticket: body.typing_ticket,
+      status: body.status,
+      tokenInBody: init.body.includes('host-only-token'),
+    };
+  }), [
+    {
+      path: '/ilink/bot/sendtyping',
+      user: 'wx-user',
+      ticket: 'typing-ticket',
+      status: 1,
+      tokenInBody: false,
+    },
+    {
+      path: '/ilink/bot/sendtyping',
+      user: 'wx-user',
+      ticket: 'typing-ticket',
+      status: 2,
+      tokenInBody: false,
+    },
+  ]);
+});
+
+test('typing endpoints reject non-zero iLink return codes', async () => {
+  const api = createWeixinApi({
+    fetchImpl: async () => jsonResponse({ ret: -2, errmsg: 'rejected' }),
+  });
+
+  await assert.rejects(
+    api.getConfig({
+      baseUrl: 'https://ilinkai.weixin.qq.com',
+      token: 'host-only-token',
+      toUserId: 'wx-user',
+    }),
+    (error) => error instanceof WeixinApiError && error.code === 'config-rejected',
+  );
+  await assert.rejects(
+    api.sendTyping({
+      baseUrl: 'https://ilinkai.weixin.qq.com',
+      token: 'host-only-token',
+      toUserId: 'wx-user',
+      typingTicket: 'typing-ticket',
+      status: 1,
+    }),
+    (error) => error instanceof WeixinApiError && error.code === 'typing-rejected',
+  );
+});
+
 test('sendFile uses the iLink 2.4.6 encrypted CDN flow and sends a native file item', async () => {
   const calls = [];
   const api = createWeixinApi({