function speakNext()

in static/js/chat.js [389:433]
43 lines of code
5 McCabe index (conditional complexity)

function speakNext(text, endingSilenceMs = 0) {
    const ttsVoice = "en-US-AvaMultilingualNeural";
    const personalVoiceSpeakerProfileID = "";
    let ssml = `<speak version='1.0' xmlns='http://www.w3.org/2001/10/synthesis' xmlns:mstts='http://www.w3.org/2001/mstts' xml:lang='en-US'>
                    <voice name='${ttsVoice}'>
                        <mstts:ttsembedding${personalVoiceSpeakerProfileID ? " speakerProfileId='" + personalVoiceSpeakerProfileID + "'" : ""}>
                            <mstts:leadingsilence-exact value='0'/>${text}
                        </mstts:ttsembedding>
                    </voice>
                </speak>`;
    if (endingSilenceMs > 0) {
         ssml = `<speak version='1.0' xmlns='http://www.w3.org/2001/10/synthesis' xmlns:mstts='http://www.w3.org/2001/mstts' xml:lang='en-US'>
                    <voice name='${ttsVoice}'>
                        <mstts:ttsembedding${personalVoiceSpeakerProfileID ? " speakerProfileId='" + personalVoiceSpeakerProfileID + "'" : ""}>
                            <mstts:leadingsilence-exact value='0'/>${text}<break time='${endingSilenceMs}ms' />
                        </mstts:ttsembedding>
                    </voice>
                </speak>`;
    }
    lastSpeakTime = new Date();
    isSpeaking = true;
    
    // Ensure the token is valid before speaking
    ensureValidToken().then(() => {
        avatarSynthesizer.speakSsmlAsync(ssml).then((result) => {
             if (result.reason === SpeechSDK.ResultReason.SynthesizingAudioCompleted) {
                 console.log(`Spoken: [${text}]. Result ID: ${result.resultId}`);
             } else {
                 console.error(`Error speaking text. Result ID: ${result.resultId}`);
             }
             if (spokenTextQueue.length > 0) {
                 speakNext(spokenTextQueue.shift());
             } else {
                 isSpeaking = false;
             }
        }).catch((error) => {
             console.error(`Error speaking SSML: [${error}]`);
             if (spokenTextQueue.length > 0) {
                 speakNext(spokenTextQueue.shift());
             } else {
                 isSpeaking = false;
             }
        });
    });
}