wrolpi/etc/raspberrypios/maintenance.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>WROLPi - Upgrade in Progress</title>
    <style>
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            color: #333;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 50%, #dde4ed 100%);
        }

        .container {
            text-align: center;
            padding: 2rem;
            max-width: 500px;
            width: 90%;
        }

        .logo {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        h1 {
            color: #5829bb;
            font-size: 1.8rem;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }

        .subtitle {
            color: #666;
            font-size: 1rem;
            margin-bottom: 2rem;
        }

        .spinner-container {
            margin: 2rem 0;
        }

        .spinner {
            width: 50px;
            height: 50px;
            border: 4px solid #ddd;
            border-top: 4px solid #4CAF50;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .status {
            font-size: 1.1rem;
            margin: 1.5rem 0;
            min-height: 1.5em;
        }

        .elapsed {
            color: #666;
            font-size: 0.9rem;
            margin-top: 1rem;
        }

        .warning {
            background: rgba(255, 193, 7, 0.1);
            border: 1px solid rgba(255, 193, 7, 0.3);
            border-radius: 8px;
            padding: 1rem;
            margin-top: 2rem;
            font-size: 0.9rem;
            color: #b38600;
        }

        .success {
            color: #4CAF50;
        }

        .check-icon {
            font-size: 3rem;
            color: #4CAF50;
            animation: fadeIn 0.5s ease-in;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: scale(0.5); }
            to { opacity: 1; transform: scale(1); }
        }

        .hidden {
            display: none;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="logo">WROLPi</div>
        <h1>Upgrade in Progress</h1>
        <p class="subtitle">Please wait while your system is being upgraded</p>

        <div class="spinner-container" id="spinnerContainer">
            <div class="spinner"></div>
        </div>

        <div class="spinner-container hidden" id="successContainer">
            <div class="check-icon">&#10003;</div>
        </div>

        <p class="status" id="status">Checking upgrade status...</p>
        <p class="elapsed" id="elapsed">Elapsed: 0:00</p>

        <div class="warning">
            <strong>Do not power off</strong> your device or close this window during the upgrade.
        </div>
    </div>

    <script>
        const startTime = Date.now();
        let pollInterval;
        let elapsedInterval;

        function updateElapsed() {
            const elapsed = Math.floor((Date.now() - startTime) / 1000);
            const minutes = Math.floor(elapsed / 60);
            const seconds = elapsed % 60;
            document.getElementById('elapsed').textContent =
                `Elapsed: ${minutes}:${seconds.toString().padStart(2, '0')}`;
        }

        function showSuccess() {
            document.getElementById('spinnerContainer').classList.add('hidden');
            document.getElementById('successContainer').classList.remove('hidden');
        }

        async function checkApiStatus() {
            try {
                const response = await fetch('/api/status', {
                    method: 'GET',
                    headers: { 'Accept': 'application/json' },
                    // Short timeout to avoid long waits
                    signal: AbortSignal.timeout(5000)
                });

                if (response.ok) {
                    // API is back online!
                    clearInterval(pollInterval);
                    clearInterval(elapsedInterval);

                    showSuccess();
                    document.getElementById('status').innerHTML =
                        '<span class="success">Upgrade complete! Redirecting...</span>';

                    // Redirect to home after a short delay
                    setTimeout(() => {
                        window.location.href = '/';
                    }, 2000);
                }
            } catch (e) {
                // API is still down or timeout - this is expected during upgrade
                document.getElementById('status').textContent = 'Upgrade in progress...';
            }
        }

        // Update elapsed time every second
        elapsedInterval = setInterval(updateElapsed, 1000);

        // Check API status every 3 seconds
        pollInterval = setInterval(checkApiStatus, 3000);

        // Initial check
        checkApiStatus();
    </script>
</body>
</html>