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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Biryani Hub Registration</title>
    <link rel="stylesheet" href="{{ url_for('static', filename='styles.css') }}">
</head>
<body>
    <div class="container">
        <h1>Biryani Hub</h1>

        <label for="name">Name:</label>
        <input type="text" id="name" readonly>

        <label for="email">Email:</label>
        <input type="text" id="email" readonly>

        <p id="status">Initializing...</p>
        <audio id="audio-player" autoplay></audio>
    </div>

    <script>
        async function playAudio(src) {
            const audioPlayer = document.getElementById('audio-player');
            audioPlayer.src = src;
            await audioPlayer.play();
            return new Promise(resolve => {
                audioPlayer.onended = resolve;
            });
        }

        async function recordAudio() {
            const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
            const mediaRecorder = new MediaRecorder(stream);
            let audioChunks = [];

            return new Promise(resolve => {
                mediaRecorder.ondataavailable = event => {
                    audioChunks.push(event.data);
                };

                mediaRecorder.onstop = () => {
                    const audioBlob = new Blob(audioChunks, { type: 'audio/wav' });
                    resolve(audioBlob);
                };

                mediaRecorder.start();

                // Wait for user to stop speaking (detect silence)
                let silenceTimeout = setTimeout(() => {
                    mediaRecorder.stop();
                }, 5000); // Max 5 seconds recording

                navigator.mediaDevices.getUserMedia({ audio: true }).then(stream => {
                    stream.getTracks().forEach(track => {
                        track.onmute = () => clearTimeout(silenceTimeout);
                        track.onunmute = () => silenceTimeout = setTimeout(() => mediaRecorder.stop(), 2000);
                    });
                });
            });
        }

        async function transcribeAudio(audioBlob) {
            const formData = new FormData();
            formData.append('audio', audioBlob, 'input.wav');

            const response = await fetch('/transcribe', {
                method: 'POST',
                body: formData
            });

            const result = await response.json();
            return result.text || 'Error capturing speech';
        }

        async function startInteraction() {
            const status = document.getElementById('status');
            const nameInput = document.getElementById('name');
            const emailInput = document.getElementById('email');

            status.textContent = 'Playing welcome message...';
            await playAudio('{{ url_for("static", filename="welcome.mp3") }}');

            status.textContent = 'Asking for your name...';
            await playAudio('{{ url_for("static", filename="ask_name.mp3") }}');

            status.textContent = 'Listening for your name...';
            const nameAudio = await recordAudio();
            const nameText = await transcribeAudio(nameAudio);
            nameInput.value = nameText;

            status.textContent = 'Asking for your email...';
            await playAudio('{{ url_for("static", filename="ask_email.mp3") }}');

            status.textContent = 'Listening for your email...';
            const emailAudio = await recordAudio();
            const emailText = await transcribeAudio(emailAudio);
            emailInput.value = emailText;

            status.textContent = 'Playing thank you message...';
            await playAudio('{{ url_for("static", filename="thank_you.mp3") }}');

            status.textContent = 'Registration complete.';
        }

        window.onload = startInteraction;
    </script>
</body>
</html>