7ae0a73db0
DOM automation for Google Labs Flow — background worker injects trusted input via the DevTools Protocol (Flow's editor ignores synthetic events), polls a local queue, harvests generated asset URLs. Includes the generated game+promo prompt bank. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
58 lines
2.4 KiB
JavaScript
58 lines
2.4 KiB
JavaScript
// Background service worker: performs TRUSTED input via the Chrome DevTools Protocol.
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// Flow's agent editor ignores synthetic DOM events (isTrusted=false) — the text shows
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// but the app's state stays empty ("no prompt" on send). CDP Input.* events are trusted,
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// so the framework actually registers them. Requires the "debugger" permission; the user
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// sees a "started debugging this browser" banner while it runs (expected).
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const attached = new Set();
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function attach(tabId) {
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return new Promise((res, rej) =>
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chrome.debugger.attach({ tabId }, '1.3', () =>
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chrome.runtime.lastError ? rej(chrome.runtime.lastError) : res()));
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}
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function cmd(tabId, method, params) {
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return new Promise((res, rej) =>
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chrome.debugger.sendCommand({ tabId }, method, params || {}, (r) =>
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chrome.runtime.lastError ? rej(chrome.runtime.lastError) : res(r)));
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}
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async function ensure(tabId) {
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if (attached.has(tabId)) return;
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try { await attach(tabId); attached.add(tabId); }
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catch (e) {
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// "Another debugger is already attached" => DevTools open on the tab; treat as attached-ish
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if (/already attached/i.test(String(e.message || e))) attached.add(tabId);
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else throw e;
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}
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}
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const ENTER = { key: 'Enter', code: 'Enter', windowsVirtualKeyCode: 13, nativeVirtualKeyCode: 13 };
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chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => {
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const tabId = sender.tab && sender.tab.id;
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(async () => {
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try {
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if (!tabId) throw new Error('no tab id');
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await ensure(tabId);
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if (msg.type === 'insertText') {
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await cmd(tabId, 'Input.insertText', { text: msg.text });
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sendResponse({ ok: true });
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} else if (msg.type === 'pressEnter') {
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await cmd(tabId, 'Input.dispatchKeyEvent', { type: 'keyDown', ...ENTER });
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await cmd(tabId, 'Input.dispatchKeyEvent', { type: 'keyUp', ...ENTER });
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sendResponse({ ok: true });
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} else if (msg.type === 'detach') {
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if (attached.has(tabId)) { chrome.debugger.detach({ tabId }, () => {}); attached.delete(tabId); }
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sendResponse({ ok: true });
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} else {
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sendResponse({ ok: false, error: 'unknown message' });
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}
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} catch (e) {
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sendResponse({ ok: false, error: String(e.message || e) });
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}
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})();
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return true; // keep the message channel open for the async response
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});
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chrome.debugger.onDetach.addListener((src) => { if (src.tabId) attached.delete(src.tabId); });
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