File size: 10,563 Bytes
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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>RetroChat Audio</title>
    <style>
        body {
            font-family: monospace;
            background-color: #1a1a1a;
            color: #00ff00;
            margin: 0;
            padding: 20px;
            height: 100vh;
            box-sizing: border-box;
        }

        .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            height: calc(100% - 100px);
            margin-bottom: 20px;
        }

        .visualization-container {
            border: 2px solid #00ff00;
            padding: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            position: relative;
        }

        #visualizer {
            width: 100%;
            height: 100%;
            background-color: #000;
        }

        .chat-container {
            border: 2px solid #00ff00;
            padding: 20px;
            display: flex;
            flex-direction: column;
            height: 100%;
            box-sizing: border-box;
        }

        .chat-messages {
            flex-grow: 1;
            overflow-y: auto;
            margin-bottom: 20px;
            padding: 10px;
            border: 1px solid #00ff00;
        }

        .message {
            margin-bottom: 10px;
            padding: 8px;
            border-radius: 4px;
        }

        .message.user {
            background-color: #003300;
        }

        .message.assistant {
            background-color: #002200;
        }

        .controls {
            text-align: center;
        }

        button {
            background-color: #000;
            color: #00ff00;
            border: 2px solid #00ff00;
            padding: 10px 20px;
            font-family: monospace;
            font-size: 16px;
            cursor: pointer;
            transition: all 0.3s;
        }

        button:hover {
            background-color: #00ff00;
            color: #000;
        }

        #audio-output {
            display: none;
        }

        /* Retro CRT effect */
        .crt-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: repeating-linear-gradient(0deg,
                    rgba(0, 255, 0, 0.03),
                    rgba(0, 255, 0, 0.03) 1px,
                    transparent 1px,
                    transparent 2px);
            pointer-events: none;
        }
    </style>
</head>

<body>
    <div class="container">
        <div class="visualization-container">
            <canvas id="visualizer"></canvas>
            <div class="crt-overlay"></div>
        </div>
        <div class="chat-container">
            <div class="chat-messages" id="chat-messages"></div>
        </div>
    </div>
    <div class="controls">
        <button id="start-button">Start</button>
    </div>
    <audio id="audio-output"></audio>

    <script>
        let audioContext;
        let analyser;
        let dataArray;
        let animationId;
        let chatHistory = [];
        let peerConnection;
        let webrtc_id;

        const visualizer = document.getElementById('visualizer');
        const ctx = visualizer.getContext('2d');
        const audioOutput = document.getElementById('audio-output');
        const startButton = document.getElementById('start-button');
        const chatMessages = document.getElementById('chat-messages');

        // Set canvas size
        function resizeCanvas() {
            visualizer.width = visualizer.offsetWidth;
            visualizer.height = visualizer.offsetHeight;
        }

        window.addEventListener('resize', resizeCanvas);
        resizeCanvas();

        // Initialize WebRTC
        async function setupWebRTC() {
            const config = __RTC_CONFIGURATION__;
            peerConnection = new RTCPeerConnection(config);

            try {
                const stream = await navigator.mediaDevices.getUserMedia({
                    audio: true
                });

                stream.getTracks().forEach(track => {
                    peerConnection.addTrack(track, stream);
                });

                // Audio visualization will be set up when we receive the output stream

                // Handle incoming audio
                peerConnection.addEventListener('track', (evt) => {
                    if (audioOutput && audioOutput.srcObject !== evt.streams[0]) {
                        audioOutput.srcObject = evt.streams[0];
                        audioOutput.play();

                        // Set up audio visualization on the output stream
                        audioContext = new AudioContext();
                        analyser = audioContext.createAnalyser();
                        const source = audioContext.createMediaStreamSource(evt.streams[0]);
                        source.connect(analyser);
                        analyser.fftSize = 2048;
                        dataArray = new Uint8Array(analyser.frequencyBinCount);
                    }
                });

                // Create data channel for messages
                const dataChannel = peerConnection.createDataChannel('text');
                dataChannel.onmessage = handleMessage;

                // Create and send offer
                const offer = await peerConnection.createOffer();
                await peerConnection.setLocalDescription(offer);

                await new Promise((resolve) => {
                    if (peerConnection.iceGatheringState === "complete") {
                        resolve();
                    } else {
                        const checkState = () => {
                            if (peerConnection.iceGatheringState === "complete") {
                                peerConnection.removeEventListener("icegatheringstatechange", checkState);
                                resolve();
                            }
                        };
                        peerConnection.addEventListener("icegatheringstatechange", checkState);
                    }
                });

                webrtc_id = Math.random().toString(36).substring(7);

                const response = await fetch('/webrtc/offer', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({
                        sdp: peerConnection.localDescription.sdp,
                        type: peerConnection.localDescription.type,
                        webrtc_id: webrtc_id
                    })
                });

                const serverResponse = await response.json();
                await peerConnection.setRemoteDescription(serverResponse);

                // Start visualization
                draw();

                // create event stream to receive messages from /output
                const eventSource = new EventSource('/outputs?webrtc_id=' + webrtc_id);
                eventSource.addEventListener("output", (event) => {
                    const eventJson = JSON.parse(event.data);
                    addMessage(eventJson.role, eventJson.content);
                });
            } catch (err) {
                console.error('Error setting up WebRTC:', err);
            }
        }

        function handleMessage(event) {
            const eventJson = JSON.parse(event.data);
            if (eventJson.type === "send_input") {
                fetch('/input_hook', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json',
                    },
                    body: JSON.stringify({
                        webrtc_id: webrtc_id,
                        chatbot: chatHistory
                    })
                });
            }
        }

        function addMessage(role, content) {
            const messageDiv = document.createElement('div');
            messageDiv.classList.add('message', role);
            messageDiv.textContent = content;
            chatMessages.appendChild(messageDiv);
            chatMessages.scrollTop = chatMessages.scrollHeight;
            chatHistory.push({ role, content });
        }

        function draw() {
            animationId = requestAnimationFrame(draw);

            analyser.getByteTimeDomainData(dataArray);

            ctx.fillStyle = 'rgb(0, 0, 0)';
            ctx.fillRect(0, 0, visualizer.width, visualizer.height);

            ctx.lineWidth = 2;
            ctx.strokeStyle = 'rgb(0, 255, 0)';
            ctx.beginPath();

            const sliceWidth = visualizer.width / dataArray.length;
            let x = 0;

            for (let i = 0; i < dataArray.length; i++) {
                const v = dataArray[i] / 128.0;
                const y = v * visualizer.height / 2;

                if (i === 0) {
                    ctx.moveTo(x, y);
                } else {
                    ctx.lineTo(x, y);
                }

                x += sliceWidth;
            }

            ctx.lineTo(visualizer.width, visualizer.height / 2);
            ctx.stroke();
        }

        function stop() {
            if (peerConnection) {
                if (peerConnection.getTransceivers) {
                    peerConnection.getTransceivers().forEach(transceiver => {
                        if (transceiver.stop) {
                            transceiver.stop();
                        }
                    });
                }

                if (peerConnection.getSenders) {
                    peerConnection.getSenders().forEach(sender => {
                        if (sender.track && sender.track.stop) sender.track.stop();
                    });
                }

                setTimeout(() => {
                    peerConnection.close();
                }, 500);
            }

            if (animationId) {
                cancelAnimationFrame(animationId);
            }

            if (audioContext) {
                audioContext.close();
            }
        }

        startButton.addEventListener('click', () => {
            if (startButton.textContent === 'Start') {
                setupWebRTC();
                startButton.textContent = 'Stop';
            } else {
                stop();
                startButton.textContent = 'Start';
            }
        });
    </script>
</body>

</html>