komodo_scripts/hf-countdown.html at master · DeckerSU/komodo_scripts · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>KMD Hardfork Countdown</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background-color: #1e1e1e;
            color: #ffffff;
            font-family: Arial, sans-serif;
            text-align: center;
            margin: 0;
        }
        .container {
            border: 2px solid #4caf50;
            padding: 30px 50px;
            border-radius: 10px;
            background-color: #2e2e2e;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
        }
        h1 {
            margin-bottom: 20px;
            font-size: 2.5em;
            color: #4caf50;
        }
        .countdown {
            font-size: 1.5em;
            margin: 15px 0;
        }
        .countdown div {
            margin: 10px 0;
        }
        .countdown span {
            font-weight: bold;
            color: #ffeb3b;
        }
        .estimated-date {
            font-size: 1.2em;
            margin-top: 25px;
            color: #00e676;
        }
        .footer {
            margin-top: 30px;
            font-size: 0.9em;
            color: #bdbdbd;
        }
        a {
            color: #4caf50;
            text-decoration: none;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>KMD Hardfork Countdown</h1>
        <div class="countdown">
            <div>Current Block Height: <span id="current-height">Loading...</span></div>
            <div>Hardfork Block Height: <span id="hf-block-height">4,125,988</span></div>
            <div>Blocks Remaining: <span id="blocks-remaining">Loading...</span></div>
            <div>Time Remaining: <span id="time-remaining">Loading...</span></div>
        </div>
        <div class="estimated-date">
            Estimated Hardfork Date: <span id="estimated-date">Loading...</span>
        </div>
        <div class="footer">
            Data fetched from <a href="https://kmdexplorer.io/" target="_blank">KMD Explorer</a>
        </div>
    </div>

    <script>
        const HARDFORK_BLOCK_HEIGHT = 4125988;
        const API_BASE = 'https://kmdexplorer.io/insight-api-komodo';
        const blocksRemainingElem = document.getElementById('blocks-remaining');
        const timeRemainingElem = document.getElementById('time-remaining');
        const estimatedDateElem = document.getElementById('estimated-date');
        const currentHeightElem = document.getElementById('current-height');
        const hfBlockHeightElem = document.getElementById('hf-block-height');

        let height1 = null; // Height 1 day before
        let height2 = null; // Height 2 days before
        let blocksPerDay = null;
        let blocksToHF = null;
        let blocksPerSec = null;
        let timeToHF = null;
        let estimatedHFDate = null;

        // Record the time when the page was opened
        const pageOpenTime = Date.now();

        // Function to format seconds to hh:mm:ss
        function formatSeconds(seconds) {
            const hrs = Math.floor(seconds / 3600);
            const mins = Math.floor((seconds % 3600) / 60);
            const secs = Math.floor(seconds % 60);
            return `${hrs.toString().padStart(2, '0')}:${mins.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`;
        }

        // Function to format Date to DD-MM-YY hh:mm:ss
        function formatDate(date) {
            const dd = String(date.getDate()).padStart(2, '0');
            const mm = String(date.getMonth() + 1).padStart(2, '0'); // Months are zero-based
            const yy = String(date.getFullYear()).slice(-2);
            const hh = String(date.getHours()).padStart(2, '0');
            const min = String(date.getMinutes()).padStart(2, '0');
            const ss = String(date.getSeconds()).padStart(2, '0');
            return `${dd}-${mm}-${yy} ${hh}:${min}:${ss}`;
        }

        // Fetch current block height
        async function fetchCurrentHeight() {
            try {
                const response = await fetch(`${API_BASE}/status?q=getInfo`);
                const data = await response.json();
                return data.info.blocks;
            } catch (error) {
                console.error('Error fetching current height:', error);
                return null;
            }
        }

        // Fetch block height for a specific date
        async function fetchHeightByDate(dateStr) {
            try {
                const response = await fetch(`${API_BASE}/blocks?blockDate=${dateStr}`);
                const data = await response.json();
                if (data.blocks && data.blocks.length > 0) {
                    return data.blocks[data.blocks.length - 1].height;
                } else {
                    console.warn(`No blocks found for date ${dateStr}`);
                    return null;
                }
            } catch (error) {
                console.error(`Error fetching height for date ${dateStr}:`, error);
                return null;
            }
        }

        // Initialize height1 and height2
        async function initializeHeights() {
            const today = new Date();
            const yesterday = new Date(today);
            yesterday.setDate(today.getDate() - 1);
            const dayBeforeYesterday = new Date(today);
            dayBeforeYesterday.setDate(today.getDate() - 2);

            const format = (date) => date.toISOString().split('T')[0];

            const date1 = format(yesterday);
            const date2 = format(dayBeforeYesterday);

            height1 = await fetchHeightByDate(date1);
            height2 = await fetchHeightByDate(date2);

            if (height1 && height2) {
                blocksPerDay = height1 - height2;
                blocksPerSec = blocksPerDay / 86400; // 86400 seconds in a day
                console.log(`Blocks per day: ${blocksPerDay}, Blocks per second: ${blocksPerSec.toFixed(6)}`);
            } else {
                console.error('Failed to fetch height1 or height2.');
            }
        }

        // Initialize and calculate estimatedHFDate
        async function initializeCountdown() {
            // Set Hardfork Block Height
            hfBlockHeightElem.textContent = HARDFORK_BLOCK_HEIGHT.toLocaleString();

            await initializeHeights();

            const currentHeight = await fetchCurrentHeight();
            if (currentHeight === null) {
                blocksRemainingElem.textContent = 'Error';
                timeRemainingElem.textContent = 'Error';
                estimatedDateElem.textContent = 'Error';
                currentHeightElem.textContent = 'Error';
                return;
            }

            currentHeightElem.textContent = currentHeight.toLocaleString();

            blocksToHF = HARDFORK_BLOCK_HEIGHT - currentHeight;
            blocksRemainingElem.textContent = blocksToHF.toLocaleString();

            if (!blocksPerSec) {
                timeRemainingElem.textContent = 'Calculating...';
                estimatedDateElem.textContent = 'Calculating...';
                return;
            }

            timeToHF = blocksToHF / blocksPerSec; // in seconds

            // Calculate Estimated Hardfork Date once
            estimatedHFDate = new Date(pageOpenTime + timeToHF * 1000);
            estimatedDateElem.textContent = formatDate(estimatedHFDate);

            // Start the interval to update time remaining
            setInterval(updateTimeRemaining, 1000);
        }

        // Update the time remaining
        function updateTimeRemaining() {
            if (!timeToHF || !estimatedHFDate) {
                timeRemainingElem.textContent = 'Calculating...';
                estimatedDateElem.textContent = 'Calculating...';
                return;
            }

            const now = Date.now();
            const remainingSeconds = Math.max((estimatedHFDate.getTime() - now) / 1000, 0);

            // Update time remaining
            timeRemainingElem.textContent = formatSeconds(remainingSeconds);

            // Optionally, update the estimated date once (if you want to show real-time)
            // estimatedDateElem.textContent = formatDate(estimatedHFDate);
        }

        // Refresh heights daily
        async function refreshHeightsIfNeeded() {
            const today = new Date();
            const currentHour = today.getHours();
            if (currentHour === 0) { // Reset heights at midnight
                await initializeHeights();
            }
        }

        // Start the countdown on page load
        window.onload = initializeCountdown;

        // Optionally, periodically refresh heights (e.g., every hour)
        setInterval(refreshHeightsIfNeeded, 60 * 60 * 1000); // Every hour
    </script>
</body>
</html>