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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>Binance Futures Dashboard</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@simonwep/pickr/dist/themes/classic.min.css">
    <link href="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/css/select2.min.css" rel="stylesheet" />
    <script src="https://cdn.jsdelivr.net/npm/lightweight-charts@3.8.0/dist/lightweight-charts.standalone.production.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/@simonwep/pickr/dist/pickr.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js"></script>
    <script src="https://cdn.tailwindcss.com"></script>
    <style>
        .chart-container {
            width: 500px;
            height: 250px;
            margin: 10px;
            position: relative;
        }
        .chart-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
            gap: 10px;
            padding: 20px;
        }
        #sidebar {
            width: 300px;
            position: fixed;
            right: -300px;
            top: 0;
            height: 100%;
            overflow-y: auto;
            transition: right 0.5s ease;
            background-color: #f8f9fa;
            z-index: 1000;
            padding: 20px;
            box-shadow: -2px 0 5px rgba(0,0,0,0.1);
        }

        #sidebar.open {
            right: 0;
        }
#main {
            transition: margin-left .5s;
        }
        .tooltip {
            position: absolute;
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 5px;
            border-radius: 3px;
            pointer-events: none;
            font-size: 12px;
        }
        .dark-mode {
            background-color: #1a202c;
            color: white;
        }
        .dark-mode .chart-container {
            background-color: #2d3748;
        }
    </style>
</head>
<body class="bg-gray-100">
    <div id="main">
        <header class="bg-white shadow-sm p-4 flex justify-between items-center">
            <h1 class="text-xl font-bold">Binance Futures Dashboard</h1>
            <div class="flex space-x-4">
                <select id="timeframe" class="p-2 border rounded">
                    <option value="1m">1m</option>
                    <option value="5m">5m</option>
                    <option value="15m">15m</option>
                    <option value="1h">1h</option>
                    <option value="4h">4h</option>
                    <option value="1d">1d</option>
                    <option value="1w">1w</option>
                </select>
                <button id="settingsBtn" class="p-2 bg-blue-500 text-white rounded">⚙️ Settings</button>
                <button id="darkModeToggle" class="p-2 bg-gray-200 rounded">🌙</button>
            </div>
        </header>
        <div class="p-4">
            <div class="mb-2">
                <label for="pairSelector" class="block font-medium mb-1">Select Trading Pairs:</label>
                <select id="pairSelector" class="w-full p-2 border rounded" multiple="multiple"></select>
            </div>
            <div class="flex space-x-2">
                <button id="addPairsBtn" class="flex-1 p-2 bg-green-500 text-white rounded hover:bg-green-600">Add Selected Pairs</button>
                <button id="clearPairsBtn" class="flex-1 p-2 bg-red-500 text-white rounded hover:bg-red-600">Clear All</button>
            </div>
        </div>
<div id="chartGrid" class="chart-grid"></div>
</div>

    <div id="sidebar" class="p-4">
        <button id="closeSidebar" class="float-right"></button>
        <h2 class="text-lg font-bold mb-4">Settings</h2>
        <div class="mb-4">
            <h3 class="font-bold mb-2">Display Options</h3>
            <label class="flex items-center space-x-2">
                <input type="checkbox" id="showPrice" class="form-checkbox">
                <span>Show Price</span>
            </label>
            <label class="flex items-center space-x-2">
                <input type="checkbox" id="showVolume" class="form-checkbox">
                <span>Show 24h Volume</span>
            </label>
            <label class="flex items-center space-x-2">
                <input type="checkbox" id="showOI" class="form-checkbox">
                <span>Show Open Interest</span>
            </label>
            <label class="flex items-center space-x-2">
                <input type="checkbox" id="showFunding" class="form-checkbox">
                <span>Show Funding Rate</span>
            </label>
            <label class="flex items-center space-x-2">
                <input type="checkbox" id="showFundingTimer" class="form-checkbox">
                <span>Show Funding Timer</span>
            </label>
        </div>
        <div class="mb-4">
            <h3 class="font-bold mb-2">Chart Style</h3>
            <label class="block mb-2">
                <span class="block mb-1">Candle Up Color</span>
                <div id="candleUpColor" class="w-full h-8 border"></div>
            </label>
            <label class="block mb-2">
                <span class="block mb-1">Candle Down Color</span>
                <div id="candleDownColor" class="w-full h-8 border"></div>
            </label>
        </div>
        <button id="saveSettings" class="p-2 bg-blue-500 text-white rounded w-full">Save Settings</button>
    </div>

    <script>
        // Global variables
        let ws;
        const charts = {};
        const subscribedPairs = new Set();
        let colorTheme = {
            up: '#26a69a',
            down: '#ef5350',
            background: '#ffffff',
            text: '#333333'
        };

        // DOM elements
        const pairSelector = $('#pairSelector');
        const chartGrid = document.getElementById('chartGrid');
        const sidebar = document.getElementById('sidebar');
        const settingsBtn = document.getElementById('settingsBtn');
        const closeSidebar = document.getElementById('closeSidebar');
        const darkModeToggle = document.getElementById('darkModeToggle');
        const timeframeSelector = document.getElementById('timeframe');
        // Initialize UI components
        document.addEventListener('DOMContentLoaded', function() {
            // Initialize Select2 for pair selection
            $(pairSelector).select2({
                placeholder: "Search and select trading pairs",
                allowClear: true,
                width: '100%',
                closeOnSelect: false
            });

            // Load pairs immediately
            fetchPairs();
// Initialize color pickers
            const candleUpPicker = Pickr.create({
                el: '#candleUpColor',
                theme: 'classic',
                default: colorTheme.up,
                components: {
                    preview: true,
                    opacity: true,
                    hue: true,
                    interaction: {
                        hex: true,
                        rgba: true,
                        input: true
                    }
                }
            });

            const candleDownPicker = Pickr.create({
                el: '#candleDownColor',
                theme: 'classic',
                default: colorTheme.down,
                components: {
                    preview: true,
                    opacity: true,
                    hue: true,
                    interaction: {
                        hex: true,
                        rgba: true,
                        input: true
                    }
                }
            });
            // Event listeners
            document.getElementById('addPairsBtn').addEventListener('click', function() {
                console.log('Add pairs clicked');
                addSelectedPairs();
            });

            document.getElementById('clearPairsBtn').addEventListener('click', function() {
                console.log('Clear pairs clicked');
                clearAllPairs();
            });

            settingsBtn.addEventListener('click', function() {
                console.log('Settings clicked');
                openSidebar();
            });

            closeSidebar.addEventListener('click', function() {
                console.log('Close sidebar clicked');
                closeSidebar();
            });

            document.getElementById('saveSettings').addEventListener('click', function() {
                console.log('Save settings clicked');
                saveSettings();
            });

            // Close sidebar when clicking outside
            document.addEventListener('click', function(event) {
                if (!sidebar.contains(event.target) && event.target !== settingsBtn) {
                    closeSidebar();
                }
            });

            // Initialize WebSocket connection
            initWebSocket();

            // Load saved settings
            loadSettings();
darkModeToggle.addEventListener('click', function() {
                document.body.classList.toggle('dark-mode');
                const isDarkMode = document.body.classList.contains('dark-mode');
                
                // Update button text
                darkModeToggle.textContent = isDarkMode ? '☀️' : '🌙';
                
                // Update all charts
                Object.keys(charts).forEach(pair => {
                    updateChartTheme(pair, isDarkMode);
                });
                
                // Save dark mode state
                const settings = JSON.parse(localStorage.getItem('binanceDashboardSettings') || '{}');
                settings.darkMode = isDarkMode;
                localStorage.setItem('binanceDashboardSettings', JSON.stringify(settings));
            });
document.getElementById('saveSettings').addEventListener('click', saveSettings);
            timeframeSelector.addEventListener('change', changeTimeframe);
        });

        function initWebSocket() {
            ws = new WebSocket('wss://fstream.binance.com/ws');
            
            ws.onopen = () => {
                console.log('WebSocket connected');
                // Resubscribe to any previously subscribed pairs
                subscribedPairs.forEach(pair => {
                    subscribeToPair(pair);
                });
            };

            ws.onclose = () => {
                console.log('WebSocket disconnected, attempting to reconnect...');
                setTimeout(initWebSocket, 1000);
            };

            ws.onerror = (error) => {
                console.error('WebSocket error:', error);
            };

            ws.onmessage = (event) => {
                const message = JSON.parse(event.data);
                processWebSocketMessage(message);
            };
        }
        function fetchPairs() {
            console.log('Fetching available pairs...');
            fetch('https://fapi.binance.com/fapi/v1/exchangeInfo')
                .then(response => response.json())
                .then(data => {
                    const pairs = data.symbols
                        .filter(symbol => symbol.status === 'TRADING')
                        .map(symbol => ({
                            id: symbol.symbol,
                            text: symbol.symbol
                        }));
                    
                    console.log(`Loaded ${pairs.length} trading pairs`);
                    $(pairSelector).select2({
                        data: pairs,
                        placeholder: "Search and select trading pairs",
                        allowClear: true,
                        width: '100%',
                        closeOnSelect: false
                    });
                })
                .catch(error => {
                    console.error('Error fetching pairs:', error);
                    // Retry after 5 seconds if failed
                    setTimeout(fetchPairs, 5000);
                });
        }
function addSelectedPairs() {
            const selectedPairs = pairSelector.val();
            if (!selectedPairs) return;

            selectedPairs.forEach(pair => {
                if (!subscribedPairs.has(pair)) {
                    subscribedPairs.add(pair);
                    subscribeToPair(pair);
                    createChart(pair);
                }
            });

            // Save selected pairs
            const settings = JSON.parse(localStorage.getItem('binanceDashboardSettings') || '{}');
            settings.selectedPairs = Array.from(subscribedPairs);
            localStorage.setItem('binanceDashboardSettings', JSON.stringify(settings));
        }

        function clearAllPairs() {
            subscribedPairs.forEach(pair => {
                if (ws && ws.readyState === WebSocket.OPEN) {
                    const unsubscribe = {
                        method: "UNSUBSCRIBE",
                        params: [
                            `${pair.toLowerCase()}@kline_${timeframeSelector.value}`,
                            `${pair.toLowerCase()}@markPrice@1s`,
                            `${pair.toLowerCase()}@bookTicker`
                        ],
                        id: Date.now()
                    };
                    ws.send(JSON.stringify(unsubscribe));
                }
                
                const chartElement = document.getElementById(`chart-${pair}`);
                if (chartElement) {
                    chartElement.remove();
                }
            });
            
            subscribedPairs.clear();
            Object.keys(charts).forEach(pair => delete charts[pair]);
            
            // Clear saved pairs
            const settings = JSON.parse(localStorage.getItem('binanceDashboardSettings') || '{}');
            settings.selectedPairs = [];
            localStorage.setItem('binanceDashboardSettings', JSON.stringify(settings));
        }
function subscribeToPair(pair) {
            if (ws && ws.readyState === WebSocket.OPEN) {
                const timeframe = timeframeSelector.value;
                const subscription = {
                    method: "SUBSCRIBE",
                    params: [
                        `${pair.toLowerCase()}@kline_${timeframe}`,
                        `${pair.toLowerCase()}@markPrice@1s`,
                        `${pair.toLowerCase()}@bookTicker`
                    ],
                    id: Date.now()
                };
                ws.send(JSON.stringify(subscription));
            }
        }

        function createChart(pair) {
            const container = document.createElement('div');
            container.className = 'chart-container';
            container.id = `chart-${pair}`;
            
            const title = document.createElement('div');
            title.className = 'font-bold mb-2';
            title.id = `title-${pair}`;
            title.textContent = pair;
            
            const chartElement = document.createElement('div');
            chartElement.style.width = '100%';
            chartElement.style.height = '100%';
            
            container.appendChild(title);
            container.appendChild(chartElement);
            chartGrid.appendChild(container);
            
            const chart = LightweightCharts.createChart(chartElement, {
                width: 500,
                height: 250,
                layout: {
                    backgroundColor: colorTheme.background,
                    textColor: colorTheme.text
                },
                grid: {
                    vertLines: { color: '#eee' },
                    horzLines: { color: '#eee' }
                },
                crosshair: {
                    mode: LightweightCharts.CrosshairMode.Normal
                },
                timeScale: {
                    timeVisible: true,
                    secondsVisible: false
                }
            });
            
            const candleSeries = chart.addCandlestickSeries({
                upColor: colorTheme.up,
                downColor: colorTheme.down,
                borderVisible: false,
                wickUpColor: colorTheme.up,
                wickDownColor: colorTheme.down
            });
            
            const volumeSeries = chart.addHistogramSeries({
                color: '#26a69a',
                priceFormat: {
                    type: 'volume'
                },
                priceScaleId: '',
                scaleMargins: {
                    top: 0.8,
                    bottom: 0
                }
            });
            
            charts[pair] = {
                chart,
                candleSeries,
                volumeSeries,
                lastUpdate: null,
                data: []
            };
            
            // Fetch initial historical data
            fetchInitialData(pair);
        }

        function fetchInitialData(pair) {
            const timeframe = timeframeSelector.value;
            const limit = 100;
            
            fetch(`https://fapi.binance.com/fapi/v1/klines?symbol=${pair}&interval=${timeframe}&limit=${limit}`)
                .then(response => response.json())
                .then(data => {
                    const formattedData = data.map(item => ({
                        time: item[0] / 1000,
                        open: parseFloat(item[1]),
                        high: parseFloat(item[2]),
                        low: parseFloat(item[3]),
                        close: parseFloat(item[4]),
                        volume: parseFloat(item[5])
                    }));
                    
                    const volumes = data.map(item => ({
                        time: item[0] / 1000,
                        value: parseFloat(item[5]),
                        color: parseFloat(item[4]) >= parseFloat(item[1]) ? colorTheme.up : colorTheme.down
                    }));
                    
                    if (charts[pair]) {
                        charts[pair].candleSeries.setData(formattedData);
                        charts[pair].volumeSeries.setData(volumes);
                        charts[pair].data = formattedData;
                    }
                })
                .catch(error => console.error(`Error fetching initial data for ${pair}:`, error));
        }

        function processWebSocketMessage(message) {
            if (message.e === 'kline') {
                const pair = message.s;
                const kline = message.k;
                
                if (charts[pair]) {
                    const newCandle = {
                        time: kline.t / 1000,
                        open: parseFloat(kline.o),
                        high: parseFloat(kline.h),
                        low: parseFloat(kline.l),
                        close: parseFloat(kline.c),
                        volume: parseFloat(kline.v)
                    };
                    
                    // Update or add candle
                    if (kline.x) {
                        // Closed candle
                        charts[pair].data.push(newCandle);
                        if (charts[pair].data.length > 100) {
                            charts[pair].data.shift();
                        }
                        charts[pair].candleSeries.update(newCandle);
                    } else {
                        // Update current candle
                        charts[pair].candleSeries.update(newCandle);
                    }
                    
                    // Update volume
                    const newVolume = {
                        time: kline.t / 1000,
                        value: parseFloat(kline.v),
                        color: parseFloat(kline.c) >= parseFloat(kline.o) ? colorTheme.up : colorTheme.down
                    };
                    charts[pair].volumeSeries.update(newVolume);
                }
            }
            // Handle other message types (mark price, book ticker, etc.)
        }

        function changeTimeframe() {
            const timeframe = timeframeSelector.value;
            subscribedPairs.forEach(pair => {
                // Unsubscribe from old streams
                if (ws && ws.readyState === WebSocket.OPEN) {
                    const unsubscribe = {
                        method: "UNSUBSCRIBE",
                        params: [
                            `${pair.toLowerCase()}@kline_${timeframe}`,
                            `${pair.toLowerCase()}@markPrice@1s`,
                            `${pair.toLowerCase()}@bookTicker`
                        ],
                        id: Date.now()
                    };
                    ws.send(JSON.stringify(unsubscribe));
                }
                
                // Subscribe to new streams
                subscribeToPair(pair);
                
                // Refresh chart data
                if (charts[pair]) {
                    fetchInitialData(pair);
                }
            });
        }
        function openSidebar() {
            sidebar.classList.add('open');
        }

        function closeSidebar() {
            sidebar.classList.remove('open');
        }
function updateChartTheme(pair, isDarkMode) {
            charts[pair].chart.applyOptions({
                layout: {
                    backgroundColor: isDarkMode ? '#2d3748' : '#ffffff',
                    textColor: isDarkMode ? '#ffffff' : '#333333'
                },
                grid: {
                    vertLines: { color: isDarkMode ? '#4a5568' : '#eee' },
                    horzLines: { color: isDarkMode ? '#4a5568' : '#eee' }
                }
            });
        }
        function saveSettings() {
            try {
                const settings = {
                    showPrice: document.getElementById('showPrice').checked,
                    showVolume: document.getElementById('showVolume').checked,
                    showOI: document.getElementById('showOI').checked,
                    showFunding: document.getElementById('showFunding').checked,
                    showFundingTimer: document.getElementById('showFundingTimer').checked,
                    darkMode: document.body.classList.contains('dark-mode'),
                    selectedPairs: Array.from(subscribedPairs),
                    timeframe: document.getElementById('timeframe').value
                };
                localStorage.setItem('binanceDashboardSettings', JSON.stringify(settings));
                console.log('Settings saved successfully');
                closeSidebar();
            } catch (error) {
                console.error('Error saving settings:', error);
            }
        }
function loadSettings() {
            const savedSettings = localStorage.getItem('binanceDashboardSettings');
            if (savedSettings) {
                const settings = JSON.parse(savedSettings);
                document.getElementById('showPrice').checked = settings.showPrice;
                document.getElementById('showVolume').checked = settings.showVolume;
                document.getElementById('showOI').checked = settings.showOI;
                document.getElementById('showFunding').checked = settings.showFunding;
                document.getElementById('showFundingTimer').checked = settings.showFundingTimer;
                
                if (settings.darkMode) {
                    document.body.classList.add('dark-mode');
                }
                
                if (settings.selectedPairs && settings.selectedPairs.length > 0) {
                    settings.selectedPairs.forEach(pair => {
                        subscribedPairs.add(pair);
                        createChart(pair);
                    });
                }
                
                if (settings.timeframe) {
                    timeframeSelector.value = settings.timeframe;
                }
            }
        }
    </script>
</body>
</html>