fix(tabs): lock automation to selected window

tests/sidepanel-window-lock.test.js

@@ -0,0 +1,119 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+
+const source = fs.readFileSync('sidepanel/sidepanel.js', 'utf8');
+
+function extractFunction(name) {
+  const markers = [`async function ${name}(`, `function ${name}(`];
+  const start = markers
+    .map((marker) => source.indexOf(marker))
+    .find((index) => index >= 0);
+  if (start < 0) {
+    throw new Error(`missing function ${name}`);
+  }
+
+  let parenDepth = 0;
+  let signatureEnded = false;
+  let braceStart = -1;
+  for (let index = start; index < source.length; index += 1) {
+    const ch = source[index];
+    if (ch === '(') parenDepth += 1;
+    if (ch === ')') {
+      parenDepth -= 1;
+      if (parenDepth === 0) signatureEnded = true;
+    }
+    if (ch === '{' && signatureEnded) {
+      braceStart = index;
+      break;
+    }
+  }
+
+  let depth = 0;
+  let end = braceStart;
+  for (; end < source.length; end += 1) {
+    const ch = source[end];
+    if (ch === '{') depth += 1;
+    if (ch === '}') {
+      depth -= 1;
+      if (depth === 0) {
+        end += 1;
+        break;
+      }
+    }
+  }
+
+  return source.slice(start, end);
+}
+
+function createApi() {
+  const bundle = [
+    extractFunction('normalizeAutomationWindowId'),
+    extractFunction('getCurrentSidepanelWindowId'),
+    extractFunction('shouldAttachAutomationWindow'),
+    extractFunction('sendSidepanelMessage'),
+  ].join('\n');
+
+  return new Function(`
+let latestState = {};
+const events = [];
+const chrome = {
+  windows: {
+    async getCurrent() {
+      events.push({ type: 'get-current-window' });
+      return { id: 321 };
+    },
+  },
+  runtime: {
+    async sendMessage(message) {
+      events.push({ type: 'send', message });
+      return { ok: true };
+    },
+  },
+};
+const console = { warn() {} };
+function syncLatestState(patch) {
+  latestState = { ...latestState, ...patch };
+  events.push({ type: 'sync', patch });
+}
+${bundle}
+return {
+  sendSidepanelMessage,
+  shouldAttachAutomationWindow,
+  getEvents() {
+    return events;
+  },
+  getLatestState() {
+    return latestState;
+  },
+};
+`)();
+}
+
+test('sidepanel attaches the current window id when starting automation actions', async () => {
+  const api = createApi();
+
+  await api.sendSidepanelMessage({
+    type: 'AUTO_RUN',
+    source: 'sidepanel',
+    payload: { totalRuns: 1 },
+  });
+
+  const sent = api.getEvents().find((entry) => entry.type === 'send').message;
+  assert.equal(sent.payload.automationWindowId, 321);
+  assert.equal(api.getLatestState().automationWindowId, 321);
+});
+
+test('sidepanel leaves non-automation messages unchanged', async () => {
+  const api = createApi();
+
+  await api.sendSidepanelMessage({
+    type: 'SAVE_SETTING',
+    source: 'sidepanel',
+    payload: { emailPrefix: 'demo' },
+  });
+
+  const events = api.getEvents();
+  assert.equal(events.some((entry) => entry.type === 'get-current-window'), false);
+  assert.deepEqual(events.find((entry) => entry.type === 'send').message.payload, { emailPrefix: 'demo' });
+});