service-teams-browser-bot/src/bot/captionsProcedure.ts

1333 lines
49 KiB
TypeScript

import { Page } from 'playwright';
import { Logger } from 'winston';
import { TranscriptEntry } from '../types';
/**
* Handles enabling and scraping captions from Teams meetings.
* Based on Recall.ai's open-source implementation.
*
* Teams web UI selectors (updated Jan 2025):
* - More button: button[id="callingButtons-showMoreBtn"]
* - Captions button: div[id="closed-captions-button"]
* - Captions container: div[data-tid="closed-caption-renderer-wrapper"]
* - Caption author: span[data-tid="author"]
* - Caption text: span[data-tid="closed-caption-text"]
* - Caption message: .fui-ChatMessageCompact
*/
export class CaptionsProcedure {
private _page: Page;
private _logger: Logger;
private _onTranscript: (entry: TranscriptEntry) => void;
private _isSubscribed: boolean = false;
private _lastCaptionText: string = '';
private _language: string;
constructor(
page: Page,
logger: Logger,
onTranscript: (entry: TranscriptEntry) => void,
language?: string
) {
this._page = page;
this._logger = logger;
this._onTranscript = onTranscript;
this._language = language || 'de-DE';
}
/**
* Enable live captions in the meeting.
* Opens the "More" menu and clicks the captions button, then sets the spoken language.
*/
async enableCaptionsFlow(): Promise<void> {
this._logger.info('Enabling captions/transcription...');
// First, open the "More actions" menu
await this._openMoreMenu();
// Then click on the captions/transcription button
await this._clickEnableCaptions();
// Handle language dialog (appears after "Start transcription" in authenticated Teams)
const dialogHandled = await this._handleLanguageDialog();
// Wait for the captions/transcript container to appear
await this._waitForCaptionsContainer();
this._logger.info('Captions/transcription enabled');
// Only try separate language setting if dialog wasn't already handled
if (!dialogHandled) {
await this._setSpokenLanguage();
}
}
/**
* Open the "More actions" (...) menu in the call controls.
* Works for both anonymous (light-meetings) and authenticated (full Teams) UI.
*/
private async _openMoreMenu(): Promise<void> {
const allSelectors = [
'button[id="callingButtons-showMoreBtn"]',
'[data-tid="callingButtons-showMoreBtn"]',
'button[aria-label*="More actions"]',
'button[aria-label*="More"]',
'[data-tid="more-button"]',
];
for (const selector of allSelectors) {
try {
const button = await this._page.$(selector);
if (button) {
await button.click();
this._logger.info(`Clicked "More" button: ${selector}`);
await this._page.waitForTimeout(1000);
return;
}
} catch {
// Continue
}
}
// Last resort: wait for the primary selector with a short timeout
try {
await this._page.waitForSelector(allSelectors[0], { timeout: 10000 });
await this._page.click(allSelectors[0]);
this._logger.info('Found "More" button (after wait)');
await this._page.waitForTimeout(1000);
return;
} catch {
// Continue
}
throw new Error('Could not find More actions menu');
}
/**
* Enable captions or transcription from the "More" menu.
*
* Strategies in priority order:
* 1. Direct captions button (anonymous / light-meetings UI)
* 2. "Record and transcribe" → "Start transcription" (authenticated Teams 2025+)
* → triggers spoken-language-selection-dialog handled by _handleLanguageDialog()
* 3. "Captions & transcripts" submenu (older authenticated Teams)
* 4. "Language and speech" panel toggle (alternative path)
* 5. Generic text / DOM scan fallback
*/
private async _clickEnableCaptions(): Promise<void> {
await this._logVisibleMenuItems();
// ── Strategy 1: Direct captions button (anonymous / light-meetings UI) ──
const directSelectors = [
'div[id="closed-captions-button"]',
'[data-tid="closed-captions-button"]',
'[data-tid="captions-toggle"]',
];
for (const selector of directSelectors) {
try {
const button = await this._page.$(selector);
if (button) {
await button.click();
this._logger.info(`Clicked direct captions button: ${selector}`);
await this._page.waitForTimeout(1000);
return;
}
} catch {
// Continue
}
}
// ── Strategy 2: "Record and transcribe" → "Start transcription" ──
// Authenticated Teams 2025+: More → Record and transcribe → Start transcription
// After clicking, a spoken-language-selection-dialog appears (handled later).
const recordMenuSelectors = [
'[data-tid="RecordingMenuControl-id"]',
'div[role="menuitem"]:has-text("Record and transcribe")',
'div[role="menuitem"]:has-text("Aufzeichnen und transkribieren")',
'div[role="menuitem"]:has-text("Aufnehmen und transkribieren")',
];
for (const selector of recordMenuSelectors) {
try {
const item = await this._page.$(selector);
if (item) {
await item.click();
this._logger.info(`Clicked "Record and transcribe": ${selector}`);
await this._page.waitForTimeout(1500);
await this._logVisibleMenuItems();
// Check if transcription is ALREADY running ("Stop transcription" visible)
const stopSelectors = [
'[data-tid="call-transcript-button"]:has-text("Stop")',
'[role="menuitem"]:has-text("Stop transcription")',
'[role="menuitem"]:has-text("Transkription beenden")',
'[role="menuitem"]:has-text("Transkription stoppen")',
];
let alreadyRunning = false;
for (const stopSel of stopSelectors) {
try {
const stopBtn = await this._page.$(stopSel);
if (stopBtn) {
this._logger.info('Transcription already running (found "Stop transcription") — not clicking');
alreadyRunning = true;
break;
}
} catch {
// Continue
}
}
if (!alreadyRunning) {
// Click "Start transcription" (only explicit "Start" selectors)
const startSelectors = [
'[data-tid="call-transcript-button"]:has-text("Start")',
'[role="menuitem"]:has-text("Start transcription")',
'[role="menuitem"]:has-text("Transkription starten")',
'button:has-text("Start transcription")',
'button:has-text("Transkription starten")',
];
let started = false;
for (const startSel of startSelectors) {
try {
const startBtn = await this._page.$(startSel);
if (startBtn) {
await startBtn.click();
this._logger.info(`Clicked "Start transcription": ${startSel}`);
await this._page.waitForTimeout(2000);
started = true;
break;
}
} catch {
// Continue
}
}
if (!started) {
this._logger.warn('"Record and transcribe" opened but "Start transcription" not found');
}
}
// Click "Show transcript" to open the transcript panel for scraping
const showTranscriptSelectors = [
'[data-tid="transcript-panel-button"]',
'[role="menuitem"]:has-text("Show transcript")',
'[role="menuitem"]:has-text("Transkript anzeigen")',
'[role="menuitem"]:has-text("Transkript")',
];
for (const showSel of showTranscriptSelectors) {
try {
const showBtn = await this._page.$(showSel);
if (showBtn) {
await showBtn.click();
this._logger.info(`Clicked "Show transcript": ${showSel}`);
await this._page.waitForTimeout(2000);
break;
}
} catch {
// Continue
}
}
return;
}
} catch {
// Continue
}
}
// ── Strategy 3: "Captions & transcripts" submenu (older Teams) ──
const submenuSelectors = [
'[data-tid="captions-and-transcripts-button"]',
'[role="menuitem"]:has-text("Captions & transcripts")',
'[role="menuitem"]:has-text("Captions and transcripts")',
'[role="menuitem"]:has-text("Untertitel und Transkripte")',
'[role="menuitem"]:has-text("Untertitel")',
];
for (const selector of submenuSelectors) {
try {
const item = await this._page.$(selector);
if (item) {
await item.click();
this._logger.info(`Clicked captions submenu: ${selector}`);
await this._page.waitForTimeout(1500);
const enableSelectors = [
'button:has-text("Turn on live captions")',
'button:has-text("Live captions")',
'button:has-text("Live-Untertitel aktivieren")',
'[role="menuitem"]:has-text("Turn on live captions")',
'[role="menuitem"]:has-text("Live captions")',
'[role="menuitemcheckbox"]:has-text("captions")',
'[data-tid="toggle-captions"]',
];
for (const enableSel of enableSelectors) {
try {
const enableBtn = await this._page.$(enableSel);
if (enableBtn) {
await enableBtn.click();
this._logger.info(`Clicked enable captions: ${enableSel}`);
await this._page.waitForTimeout(1000);
return;
}
} catch {
// Continue
}
}
this._logger.info('Opened captions submenu but could not find enable button');
break;
}
} catch {
// Continue
}
}
// ── Strategy 4: "Language and speech" panel toggle ──
const langSpeechSelectors = [
'[data-tid="LanguageSpeechMenuControl-id"]',
'div[role="menuitem"]:has-text("Language and speech")',
'div[role="menuitem"]:has-text("Sprache und Spracheingabe")',
];
for (const selector of langSpeechSelectors) {
try {
const item = await this._page.$(selector);
if (item) {
await item.click();
this._logger.info(`Clicked "Language and speech": ${selector}`);
await this._page.waitForTimeout(2000);
const panelToggles = await this._page.evaluate(() => {
const switches = document.querySelectorAll(
'input[role="switch"], [role="switch"], input[type="checkbox"]'
);
return Array.from(switches).map(s => ({
tid: s.getAttribute('data-tid') || '',
label: s.getAttribute('aria-label') || '',
checked: (s as HTMLInputElement).checked,
nearText: ((s.closest('div, label') as HTMLElement)?.textContent || '')
.trim().substring(0, 80),
}));
});
this._logger.info(`Panel toggles: ${JSON.stringify(panelToggles)}`);
const toggleResult = await this._page.evaluate(() => {
const switches = document.querySelectorAll(
'input[role="switch"], [role="switch"], input[type="checkbox"]'
);
for (const sw of Array.from(switches)) {
const label = (sw.getAttribute('aria-label') || '').toLowerCase();
const tid = (sw.getAttribute('data-tid') || '').toLowerCase();
const parentEl = sw.closest('div, label, span') as HTMLElement;
const nearText = (parentEl?.textContent || '').toLowerCase();
const isCaptions =
label.includes('caption') || label.includes('untertitel') ||
tid.includes('caption') || tid.includes('subtitle') ||
nearText.includes('live caption') || nearText.includes('liveuntertitel');
if (isCaptions) {
if (!(sw as HTMLInputElement).checked) {
(sw as HTMLElement).click();
return { found: true, clicked: true, info: label || tid || nearText.substring(0, 60) };
}
return { found: true, clicked: false, info: `already on: ${label || tid}` };
}
}
return { found: false, clicked: false, info: '' };
});
this._logger.info(`Captions toggle result: ${JSON.stringify(toggleResult)}`);
if (toggleResult.found && toggleResult.clicked) {
await this._page.waitForTimeout(1500);
}
await this._page.keyboard.press('Escape');
if (toggleResult.found) return;
this._logger.warn('Language panel opened but no captions toggle found');
break;
}
} catch {
// Continue
}
}
// ── Strategy 5: DOM scan for anything containing "caption" / "transcri" ──
const found = await this._page.evaluate(() => {
const keywords = ['caption', 'captions', 'untertitel', 'live caption', 'transcri', 'transkri'];
const candidates = document.querySelectorAll(
'[role="menuitem"], [role="menuitemcheckbox"], [role="menuitemradio"], button, li, div[role="option"]'
);
const results: string[] = [];
for (let i = 0; i < candidates.length; i++) {
const el = candidates[i] as HTMLElement;
const text = el.innerText?.toLowerCase()?.trim() || '';
if (text && keywords.some(kw => text.includes(kw))) {
results.push(text.substring(0, 60));
el.click();
return { clicked: text.substring(0, 60), allMatches: results };
}
}
return { clicked: null, allMatches: results };
});
if (found.clicked) {
this._logger.info(`Clicked via DOM scan: "${found.clicked}"`);
await this._page.waitForTimeout(1500);
const turnOnBtn = await this._page.$('button:has-text("Turn on"), [role="menuitem"]:has-text("Turn on")');
if (turnOnBtn) {
await turnOnBtn.click();
this._logger.info('Clicked "Turn on" in submenu');
await this._page.waitForTimeout(1000);
}
return;
}
await this._page.keyboard.press('Escape');
this._logger.warn(`Could not find captions/transcription option. DOM scan: ${JSON.stringify(found.allMatches)}`);
}
/**
* Handle the "What language is everyone speaking?" dialog.
* This dialog appears after clicking "Start transcription" in authenticated Teams.
*
* DOM structure (from user-provided HTML):
* [data-tid="spoken-language-selection-dialog"] — alertdialog
* button[data-tid="callingCaptions-spokenLanguages"] — combobox (current lang)
* button[data-tid="calling_captions_change_language_dialog_confirm_button"]
* button[data-tid="calling_captions_change_language_dialog_cancel_button"]
*/
private async _handleLanguageDialog(): Promise<boolean> {
try {
const dialogSelector = '[data-tid="spoken-language-selection-dialog"]';
await this._page.waitForSelector(dialogSelector, { timeout: 8000 });
this._logger.info('Spoken language selection dialog appeared');
// Read current language from dropdown button
const dropdownSelector = 'button[data-tid="callingCaptions-spokenLanguages"]';
const dropdown = await this._page.$(dropdownSelector);
if (dropdown) {
const currentLang = await dropdown.evaluate(
(el) => el.textContent?.trim() || '',
);
this._logger.info(`Dialog current language: "${currentLang}"`);
// Check if the language is already correct
const targetNames = this._getLanguageDisplayNames();
const isCorrect = targetNames.some((name) =>
currentLang.toLowerCase().includes(name.toLowerCase()),
);
if (!isCorrect) {
this._logger.info(`Need to change language to: ${targetNames.join(', ')}`);
// Open dropdown
await dropdown.click();
await this._page.waitForTimeout(800);
// Select the correct option
let selected = false;
for (const name of targetNames) {
if (selected) break;
const optionSelectors = [
`[role="option"]:has-text("${name}")`,
`li:has-text("${name}")`,
`div[role="option"]:has-text("${name}")`,
];
for (const optSel of optionSelectors) {
try {
const option = await this._page.$(optSel);
if (option) {
await option.click();
this._logger.info(`Selected language: ${name} (via ${optSel})`);
selected = true;
break;
}
} catch {
// Continue
}
}
}
if (!selected) {
this._logger.warn('Could not select language in dialog dropdown');
}
await this._page.waitForTimeout(500);
} else {
this._logger.info('Language already correct in dialog');
}
}
// Click "Confirm"
const confirmSelectors = [
'button[data-tid="calling_captions_change_language_dialog_confirm_button"]',
'button:has-text("Confirm")',
'button:has-text("Bestätigen")',
];
for (const sel of confirmSelectors) {
try {
const btn = await this._page.$(sel);
if (btn) {
await btn.click();
this._logger.info(`Clicked "Confirm" in language dialog: ${sel}`);
await this._page.waitForTimeout(1500);
return true;
}
} catch {
// Continue
}
}
this._logger.warn('Language dialog found but could not click Confirm');
return false;
} catch {
// No dialog appeared — using captions mode, not transcription
this._logger.info('No language selection dialog appeared (may be using captions mode)');
return false;
}
}
/**
* Get display names for the configured language (used in dropdown selection).
*/
private _getLanguageDisplayNames(): string[] {
const languageDisplayNames: Record<string, string[]> = {
'de-DE': ['German (Germany)', 'Deutsch (Deutschland)', 'German'],
'de-CH': ['German (Switzerland)', 'Deutsch (Schweiz)', 'German'],
'en-US': ['English (United States)', 'English (US)', 'English'],
'en-GB': ['English (United Kingdom)', 'English (UK)'],
'fr-FR': ['French (France)', 'Français (France)', 'French'],
'fr-CH': ['French (Switzerland)', 'Français (Suisse)'],
'it-IT': ['Italian (Italy)', 'Italiano (Italia)', 'Italian'],
};
return languageDisplayNames[this._language] || [this._language];
}
/**
* Log visible menu items for debugging when captions button is not found.
*/
private async _logVisibleMenuItems(): Promise<void> {
try {
const menuItems = await this._page.evaluate(() => {
const items = document.querySelectorAll(
'[role="menuitem"], [role="menuitemcheckbox"], [role="menuitemradio"]'
);
return Array.from(items).map(el => {
const text = (el as HTMLElement).innerText?.trim()?.substring(0, 50) || '';
const tid = el.getAttribute('data-tid') || '';
const id = el.id || '';
return `[${tid || id || 'no-id'}] ${text}`;
}).filter(t => t.length > 5);
});
this._logger.info(`Visible menu items (${menuItems.length}): ${JSON.stringify(menuItems)}`);
} catch {
// Not critical
}
}
/**
* Wait for the captions container to become visible after enabling.
*/
private async _waitForCaptionsContainer(): Promise<void> {
const containerSelectors = [
'div[data-tid="closed-caption-renderer-wrapper"]',
'div[data-tid="live-captions-renderer"]',
'[data-tid="caption-area"]',
'[data-tid="transcript-pane"]',
'[data-tid="transcript-view"]',
'[data-tid="transcript-content"]',
];
for (const selector of containerSelectors) {
try {
await this._page.waitForSelector(selector, { timeout: 8000 });
this._logger.info(`Found captions/transcript container: ${selector}`);
return;
} catch {
// Try next
}
}
// Log ALL transcript/caption related data-tid elements for debugging
const tids = await this._page.evaluate(() => {
const els = document.querySelectorAll('[data-tid]');
return Array.from(els)
.map(e => ({
tid: e.getAttribute('data-tid') || '',
tag: e.tagName,
h: (e as HTMLElement).offsetHeight,
w: (e as HTMLElement).offsetWidth,
}))
.filter(t =>
t.tid.includes('caption') || t.tid.includes('transcript') || t.tid.includes('subtitle'),
)
.slice(0, 15);
});
this._logger.info(`Transcript/caption data-tid elements: ${JSON.stringify(tids)}`);
this._logger.warn('Could not find captions/transcript container with known selectors');
}
/**
* Set the spoken language for captions.
*
* Teams defaults to English for anonymous users. This method attempts to
* change the "Meeting spoken language" to the configured language (e.g. "de-DE").
*
* Flow (per Microsoft docs):
* 1. Click "Caption settings" (gear/settings icon near captions area)
* 2. Click "Language settings"
* 3. Change "Meeting spoken language" dropdown
* 4. Click "Update"
*
* Note: Changing spoken language affects ALL meeting participants.
*/
private async _setSpokenLanguage(): Promise<void> {
// Map BCP-47 codes to Teams display names for the spoken language dropdown
const languageDisplayNames: Record<string, string[]> = {
'de-DE': ['German (Germany)', 'Deutsch (Deutschland)', 'German'],
'de-CH': ['German (Switzerland)', 'Deutsch (Schweiz)', 'German'],
'en-US': ['English (United States)', 'English (US)', 'English'],
'en-GB': ['English (United Kingdom)', 'English (UK)'],
'fr-FR': ['French (France)', 'Français (France)', 'French'],
'fr-CH': ['French (Switzerland)', 'Français (Suisse)'],
'it-IT': ['Italian (Italy)', 'Italiano (Italia)', 'Italian'],
};
const targetNames = languageDisplayNames[this._language] || [this._language];
this._logger.info(`Setting spoken language to: ${this._language} (looking for: ${targetNames.join(', ')})`);
try {
// Wait a moment for the captions UI to stabilize
await this._page.waitForTimeout(2000);
let settingsOpened = false;
// Strategy 1: Try "Caption settings" gear button near the captions area
const captionSettingsSelectors = [
'button[aria-label*="Caption settings" i]',
'button[aria-label*="Captions settings" i]',
'button[aria-label*="Untertiteleinstellungen" i]',
'button[data-tid="caption-settings-button"]',
'button[id="caption-settings-button"]',
// Teams 2025+: settings icon inside the captions banner
'button[aria-label*="Settings" i][data-tid*="caption" i]',
];
for (const selector of captionSettingsSelectors) {
try {
const button = await this._page.$(selector);
if (button) {
await button.click();
this._logger.info(`Clicked caption settings: ${selector}`);
settingsOpened = true;
await this._page.waitForTimeout(1000);
break;
}
} catch {
// Continue
}
}
// Strategy 2: More menu > "Language and speech" / "Captions & transcripts"
if (!settingsOpened) {
this._logger.info('Caption settings button not found, trying More menu > Language and speech...');
await this._openMoreMenu();
await this._page.waitForTimeout(1000);
// All selectors must have an element prefix for Playwright
const languageMenuSelectors = [
'[data-tid="captions-and-transcripts-button"]',
'[data-tid="language-and-speech-button"]',
'div[role="menuitem"]:has-text("Captions & transcripts")',
'div[role="menuitem"]:has-text("Captions and transcripts")',
'div[role="menuitem"]:has-text("Untertitel und Transkripte")',
'div[role="menuitem"]:has-text("Language and speech")',
'div[role="menuitem"]:has-text("Sprache und Spracheingabe")',
'button:has-text("Captions & transcripts")',
'button:has-text("Captions and transcripts")',
'button:has-text("Language and speech")',
'button:has-text("Sprache und Spracheingabe")',
'li:has-text("Captions")',
'li:has-text("Language")',
'li:has-text("Untertitel")',
'li:has-text("Sprache")',
];
for (const selector of languageMenuSelectors) {
try {
const item = await this._page.$(selector);
if (item) {
await item.click();
this._logger.info(`Clicked language menu: ${selector}`);
settingsOpened = true;
await this._page.waitForTimeout(1000);
break;
}
} catch {
// Continue
}
}
}
// Strategy 3: Search all visible menu items by evaluating text content
if (!settingsOpened) {
this._logger.info('Standard selectors failed, scanning menu items by text...');
const found = await this._page.evaluate(() => {
const keywords = [
'caption', 'captions', 'untertitel',
'language', 'sprache', 'spoken',
];
// Search all menu items, buttons, and clickable elements
const candidates = document.querySelectorAll(
'[role="menuitem"], [role="menuitemcheckbox"], [role="menuitemradio"], button, li'
);
const elArray = Array.from(candidates);
for (let i = 0; i < elArray.length; i++) {
const el = elArray[i] as HTMLElement;
const text = el.innerText?.toLowerCase() || '';
if (keywords.some(kw => text.includes(kw))) {
el.click();
return text;
}
}
return null;
});
if (found) {
this._logger.info(`Clicked menu item by text scan: "${found}"`);
settingsOpened = true;
await this._page.waitForTimeout(1000);
}
}
if (!settingsOpened) {
this._logger.warn('Could not open language settings - captions will use default language (English)');
return;
}
// Look for sub-options like "Change spoken language" / "Language settings"
const langSettingsSelectors = [
'button:has-text("Change spoken language")',
'button:has-text("Gesprochene Sprache ändern")',
'button:has-text("Language settings")',
'button:has-text("Spracheinstellungen")',
'button:has-text("Spoken language")',
'button:has-text("Gesprochene Sprache")',
'div[role="menuitem"]:has-text("Change spoken language")',
'div[role="menuitem"]:has-text("Spoken language")',
'div[role="menuitem"]:has-text("Gesprochene Sprache")',
'a:has-text("Change spoken language")',
'a:has-text("Spoken language")',
];
for (const selector of langSettingsSelectors) {
try {
const item = await this._page.$(selector);
if (item) {
await item.click();
this._logger.info(`Clicked language settings: ${selector}`);
await this._page.waitForTimeout(1000);
break;
}
} catch {
// Continue - might already be on the language settings page
}
}
// Look for the spoken language dropdown/combobox
let languageSet = false;
// First, log what's visible in the settings panel for debugging
const panelInfo = await this._page.evaluate(() => {
const selects = document.querySelectorAll('select');
const comboboxes = document.querySelectorAll('[role="combobox"]');
const listboxes = document.querySelectorAll('[role="listbox"]');
const dropdowns = document.querySelectorAll('[class*="dropdown" i], [class*="Dropdown" i]');
const allButtons = document.querySelectorAll('button');
const buttonsWithText = Array.from(allButtons)
.map(b => `${b.tagName}[${b.getAttribute('aria-label') || b.textContent?.trim().substring(0, 40)}]`)
.filter(t => t.length > 10)
.slice(0, 10);
return {
selects: selects.length,
comboboxes: comboboxes.length,
listboxes: listboxes.length,
dropdowns: dropdowns.length,
buttons: buttonsWithText,
bodySnippet: document.body?.innerText?.substring(0, 800) || '',
};
});
this._logger.info(`Caption settings panel - selects: ${panelInfo.selects}, comboboxes: ${panelInfo.comboboxes}, listboxes: ${panelInfo.listboxes}, dropdowns: ${panelInfo.dropdowns}`);
this._logger.info(`Panel buttons: ${JSON.stringify(panelInfo.buttons)}`);
this._logger.debug(`Panel text: ${panelInfo.bodySnippet.substring(0, 300)}`);
// Strategy A: Standard selectors
const dropdownSelectors = [
'select[aria-label*="spoken language" i]',
'select[aria-label*="Meeting spoken language" i]',
'select[aria-label*="Gesprochene Sprache" i]',
'[data-tid="spoken-language-dropdown"]',
'div[role="combobox"]',
'div[role="listbox"]',
'select',
];
for (const selector of dropdownSelectors) {
if (languageSet) break;
try {
const dropdown = await this._page.$(selector);
if (dropdown) {
const tagName = await dropdown.evaluate(el => el.tagName.toLowerCase());
if (tagName === 'select') {
for (const name of targetNames) {
try {
await this._page.selectOption(selector, { label: name });
this._logger.info(`Selected spoken language: ${name}`);
languageSet = true;
break;
} catch {
// Try next name variant
}
}
} else {
// Fluent UI dropdown/combobox
await dropdown.click();
await this._page.waitForTimeout(500);
for (const name of targetNames) {
try {
const optionSelectors = [
`[role="option"]:has-text("${name}")`,
`li:has-text("${name}")`,
`div[role="option"]:has-text("${name}")`,
`span:has-text("${name}")`,
];
for (const optSel of optionSelectors) {
const option = await this._page.$(optSel);
if (option) {
await option.click();
this._logger.info(`Selected spoken language: ${name} (via ${optSel})`);
languageSet = true;
break;
}
}
if (languageSet) break;
} catch {
// Try next name variant
}
}
}
if (languageSet) break;
}
} catch {
// Continue
}
}
// Strategy B: DOM evaluation fallback - find any dropdown-like element and interact
if (!languageSet) {
this._logger.info('Standard dropdown selectors failed, trying DOM evaluation fallback...');
languageSet = await this._page.evaluate((names: string[]) => {
// Find all elements that could be dropdowns (Fluent UI uses various patterns)
const candidates = document.querySelectorAll(
'[role="combobox"], [role="listbox"], select, ' +
'[class*="dropdown" i], [class*="Dropdown"], ' +
'button[aria-haspopup="listbox"], button[aria-haspopup="true"], ' +
'[aria-expanded]'
);
for (let i = 0; i < candidates.length; i++) {
const el = candidates[i] as HTMLElement;
const label = el.getAttribute('aria-label') || '';
const nearbyText = el.parentElement?.innerText || '';
// Check if this dropdown is related to language
const isLanguageRelated =
label.toLowerCase().includes('language') ||
label.toLowerCase().includes('sprache') ||
nearbyText.toLowerCase().includes('spoken language') ||
nearbyText.toLowerCase().includes('gesprochene sprache');
if (isLanguageRelated || candidates.length === 1) {
// Click to open the dropdown
el.click();
// Wait a frame for options to render
return new Promise<boolean>((resolve) => {
requestAnimationFrame(() => {
requestAnimationFrame(() => {
// Look for options
const options = document.querySelectorAll(
'[role="option"], [role="menuitem"], li[class*="option" i]'
);
for (let j = 0; j < options.length; j++) {
const opt = options[j] as HTMLElement;
const optText = opt.innerText?.trim() || '';
if (names.some(n => optText.includes(n))) {
opt.click();
resolve(true);
return;
}
}
resolve(false);
});
});
});
}
}
return Promise.resolve(false);
}, targetNames);
if (languageSet) {
this._logger.info('Selected spoken language via DOM evaluation fallback');
await this._page.waitForTimeout(500);
}
}
if (!languageSet) {
this._logger.warn('Could not find/select spoken language in dropdown');
}
// Click "Update" / "Apply" / "Confirm" button
const updateSelectors = [
'button:has-text("Update")',
'button:has-text("Apply")',
'button:has-text("Confirm")',
'button:has-text("Aktualisieren")',
'button:has-text("Übernehmen")',
'button:has-text("Bestätigen")',
'button[data-tid="language-update-button"]',
];
for (const selector of updateSelectors) {
try {
const button = await this._page.$(selector);
if (button) {
await button.click();
this._logger.info(`Clicked update button: ${selector}`);
await this._page.waitForTimeout(1000);
break;
}
} catch {
// Continue
}
}
// Close any open dialogs/menus
await this._page.keyboard.press('Escape');
this._logger.info(`Spoken language setting attempt completed (set: ${languageSet})`);
} catch (error) {
this._logger.warn(`Could not set spoken language to ${this._language}: ${error}`);
// Not fatal - captions will still work, just in the wrong language
}
}
/**
* Start watching the captions DOM for updates using Recall.ai's approach.
*
* Uses page.exposeFunction() + MutationObserver for real-time caption detection.
* Captions in Teams are rendered inside .fui-ChatMessageCompact elements with:
* - span[data-tid="author"] for the speaker name
* - span[data-tid="closed-caption-text"] for the caption text
*
* Teams updates captions in real-time as the user speaks, adding punctuation
* only when the caption is finalized. We use this to detect final captions.
*/
async subscribeToCaptions(): Promise<void> {
if (this._isSubscribed) {
this._logger.warn('Already subscribed to captions');
return;
}
this._isSubscribed = true;
this._logger.info('Subscribing to captions...');
// Expose callback functions from Node.js to the browser context
await this._page.exposeFunction('__onCaptionEvent', (caption: {
speaker: string;
text: string;
timestamp: string;
}) => {
this._handleCaptionEvent(caption);
});
// Debug callback: logs transcript DOM structure to help identify selectors
try {
await this._page.exposeFunction('__onCaptionDebug', (info: {
tag: string;
tid: string;
classes: string;
text: string;
children: number;
html: string;
}) => {
this._logger.info(
`TranscriptDOM: <${info.tag} data-tid="${info.tid}"> ` +
`children=${info.children}, text="${info.text}"`,
);
this._logger.debug(`TranscriptDOM html: ${info.html}`);
});
} catch {
// May already be exposed
}
// Wait for a known container
const waitSelectors = [
'div[data-tid="closed-caption-renderer-wrapper"]',
'div[data-tid="live-captions-renderer"]',
'[data-tid="caption-area"]',
'[data-tid="transcript-pane"]',
'[data-tid="transcript-view"]',
'[data-tid="transcript-content"]',
];
let containerFound = false;
for (const sel of waitSelectors) {
try {
await this._page.waitForSelector(sel, { timeout: 8000 });
containerFound = true;
this._logger.info(`Captions/transcript container found: ${sel}`);
break;
} catch {
// Try next
}
}
if (!containerFound) {
// Log all transcript/caption related elements for debugging
const transcriptTids = await this._page.evaluate(() => {
const els = document.querySelectorAll('[data-tid]');
return Array.from(els)
.map(e => ({
tid: e.getAttribute('data-tid') || '',
tag: e.tagName,
h: (e as HTMLElement).offsetHeight,
w: (e as HTMLElement).offsetWidth,
children: e.children?.length || 0,
}))
.filter(t =>
t.tid.includes('caption') || t.tid.includes('transcript') || t.tid.includes('subtitle'),
)
.slice(0, 20);
});
this._logger.info(
`No exact container match. Transcript/caption elements: ${JSON.stringify(transcriptTids)}`,
);
this._logger.warn('Captions/transcript container not found, subscribing with body fallback');
}
this._logger.info('Setting up MutationObserver for captions/transcription...');
const observerTarget = await this._page.evaluate(() => {
// ── Helper: extract caption data (anonymous/light-meetings captions) ──
function _extractCaption(element: HTMLElement): boolean {
const captionMessage = element.querySelector('.fui-ChatMessageCompact')
|| (element.classList?.contains('fui-ChatMessageCompact') ? element : null);
if (captionMessage) {
const authorElement = captionMessage.querySelector('span[data-tid="author"]');
const contentElement = captionMessage.querySelector('span[data-tid="closed-caption-text"]');
if (authorElement && contentElement) {
const textObserver = new MutationObserver(() => {
const speaker = authorElement.textContent?.trim() ?? 'Unknown';
const text = (contentElement as any).innerText?.trim() ?? '';
(window as any).__onCaptionEvent({
speaker,
text,
timestamp: new Date().toISOString(),
});
});
textObserver.observe(contentElement, {
childList: true,
subtree: true,
characterData: true,
});
return true;
}
}
return false;
}
// ── Helper: extract transcript entry (authenticated Teams transcript panel) ──
function _extractTranscript(element: HTMLElement): boolean {
const text = element.innerText?.trim();
if (!text || text.length < 2) return false;
// Strategy A: data-tid based speaker/text elements
const speakerEl = element.querySelector(
'[data-tid*="speaker"], [data-tid*="author"], [data-tid*="name"], ' +
'[data-tid*="participant"]'
);
const textEl = element.querySelector(
'[data-tid*="text"], [data-tid*="content"], [data-tid*="body"], ' +
'[data-tid*="message"]'
);
if (speakerEl && textEl) {
const speaker = speakerEl.textContent?.trim() || 'Unknown';
const content = (textEl as HTMLElement).innerText?.trim() || '';
if (content) {
(window as any).__onCaptionEvent({
speaker,
text: content,
timestamp: new Date().toISOString(),
});
return true;
}
}
// Strategy B: structural — first short text child = speaker, rest = text
const directChildren = Array.from(element.children) as HTMLElement[];
if (directChildren.length >= 2) {
const first = directChildren[0].innerText?.trim() || '';
const rest = directChildren
.slice(1)
.map(c => c.innerText?.trim())
.filter(Boolean)
.join(' ')
.trim();
if (first && first.length < 60 && rest && rest.length > 2) {
(window as any).__onCaptionEvent({
speaker: first,
text: rest,
timestamp: new Date().toISOString(),
});
return true;
}
}
return false;
}
// ── Combined handler for mutation observer ──
function _handleAddedNode(node: Node): void {
if (node.nodeType !== Node.ELEMENT_NODE) return;
const el = node as HTMLElement;
// Skip tiny/empty elements
const text = el.innerText?.trim();
if (!text || text.length < 2) return;
// Try caption extraction first (anonymous UI)
if (_extractCaption(el)) return;
// Try transcript extraction (authenticated UI)
if (_extractTranscript(el)) return;
// Not recognized — log for debugging (only elements with meaningful text)
if (text.length > 3) {
(window as any).__onCaptionDebug?.({
tag: el.tagName,
tid: el.getAttribute('data-tid') || '',
classes: (el.className || '').substring(0, 100),
text: text.substring(0, 200),
children: el.children?.length || 0,
html: el.innerHTML?.substring(0, 500) || '',
});
}
}
// ── Find container ──
const containerSelectors = [
'div[data-tid="closed-caption-renderer-wrapper"]',
'div[data-tid="live-captions-renderer"]',
'[data-tid="caption-area"]',
'[data-tid="transcript-pane"]',
'[data-tid="transcript-view"]',
];
let targetNode: Element | null = null;
let targetSelector = '';
for (const sel of containerSelectors) {
targetNode = document.querySelector(sel);
if (targetNode) {
targetSelector = sel;
break;
}
}
// Also try wildcard match (transcript container — exclude buttons/controls)
if (!targetNode) {
const candidates = document.querySelectorAll('[data-tid*="transcript"]');
for (const c of Array.from(candidates)) {
const tid = c.getAttribute('data-tid') || '';
const tag = c.tagName;
const height = (c as HTMLElement).offsetHeight || 0;
// Skip buttons, small elements, and control-related elements
if (
tag === 'BUTTON' || tag === 'SPAN' || tag === 'SVG' ||
tid.includes('button') || tid.includes('cancel') || tid.includes('stop') ||
height < 100
) continue;
targetNode = c;
targetSelector = `[data-tid="${tid}"]`;
break;
}
}
if (targetNode) {
const tid = targetNode.getAttribute('data-tid') || '';
const observer = new MutationObserver((mutationsList) => {
for (const mutation of mutationsList) {
if (mutation.type === 'childList') {
mutation.addedNodes.forEach(_handleAddedNode);
}
}
});
observer.observe(targetNode, { childList: true, subtree: true });
(window as any).__captionsObserver = observer;
return `container:${tid}`;
}
// ── Fallback: observe document.body ──
const allSelectors = [...containerSelectors];
function _isTranscriptContainer(el: Element): boolean {
const tid = el.getAttribute('data-tid') || '';
if (!tid.includes('transcript')) return false;
if (el.tagName === 'BUTTON' || el.tagName === 'SPAN' || el.tagName === 'SVG') return false;
if (tid.includes('button') || tid.includes('cancel') || tid.includes('stop')) return false;
if ((el as HTMLElement).offsetHeight < 100) return false;
return true;
}
const bodyObserver = new MutationObserver((mutationsList) => {
for (const mutation of mutationsList) {
if (mutation.type !== 'childList') continue;
mutation.addedNodes.forEach((node) => {
if (node.nodeType !== Node.ELEMENT_NODE) return;
const el = node as HTMLElement;
// Check if a known container just appeared
for (const sel of allSelectors) {
const container = el.matches?.(sel) ? el : el.querySelector?.(sel);
if (container) {
bodyObserver.disconnect();
const tid = container.getAttribute('data-tid') || '';
const targeted = new MutationObserver((muts) => {
for (const m of muts) {
if (m.type === 'childList') {
m.addedNodes.forEach(_handleAddedNode);
}
}
});
targeted.observe(container, { childList: true, subtree: true });
(window as any).__captionsObserver = targeted;
return;
}
}
// Check if a transcript container appeared dynamically
if (_isTranscriptContainer(el)) {
bodyObserver.disconnect();
const tid = el.getAttribute('data-tid') || '';
const targeted = new MutationObserver((muts) => {
for (const m of muts) {
if (m.type === 'childList') {
m.addedNodes.forEach(_handleAddedNode);
}
}
});
targeted.observe(el, { childList: true, subtree: true });
(window as any).__captionsObserver = targeted;
return;
}
// Also check inside the added node for transcript containers
const transcriptChild = el.querySelector?.('[data-tid*="transcript"]');
if (transcriptChild && _isTranscriptContainer(transcriptChild)) {
bodyObserver.disconnect();
const tid = transcriptChild.getAttribute('data-tid') || '';
const targeted = new MutationObserver((muts) => {
for (const m of muts) {
if (m.type === 'childList') {
m.addedNodes.forEach(_handleAddedNode);
}
}
});
targeted.observe(transcriptChild, { childList: true, subtree: true });
(window as any).__captionsObserver = targeted;
return;
}
_handleAddedNode(node);
});
}
});
bodyObserver.observe(document.body, { childList: true, subtree: true });
(window as any).__captionsObserver = bodyObserver;
return 'body-fallback';
});
this._logger.info(`MutationObserver set up for captions (target: ${observerTarget})`);
}
/**
* Handle a caption event from the browser MutationObserver.
* Teams updates captions in real-time. We detect finalized captions by
* checking for terminal punctuation (. , ! ?).
*/
private _handleCaptionEvent(caption: { speaker: string; text: string; timestamp: string }): void {
if (!this._isSubscribed || !caption.text) {
return;
}
// Teams adds punctuation only to finalized captions
const terminalPunctuationRegex = /[.,!?]/;
if (!terminalPunctuationRegex.test(caption.text)) {
return; // Not finalized yet
}
// Dedup: strip punctuation and compare to last caption
const punctuationRegex = /[.,'"!?~\-]/g;
const newTextStripped = caption.text.replace(punctuationRegex, '');
const lastTextStripped = this._lastCaptionText.replace(punctuationRegex, '');
if (newTextStripped === lastTextStripped) {
return; // Duplicate
}
this._lastCaptionText = caption.text;
this._logger.info(`Caption: [${caption.speaker}] ${caption.text}`);
this._onTranscript({
speaker: caption.speaker,
text: caption.text,
timestamp: new Date(caption.timestamp),
isFinal: true,
});
}
/**
* Stop watching for captions.
*/
async unsubscribe(): Promise<void> {
this._isSubscribed = false;
try {
await this._page.evaluate(() => {
if ((window as any).__captionsObserver) {
(window as any).__captionsObserver.disconnect();
}
});
} catch {
// Page might already be closed
}
this._logger.info('Unsubscribed from captions');
}
}