{% extends "base.html" %}

{% block title %}Live Dashboard{% endblock %}

{% block extra_css %}
<style>
    .stats-card {
        background: white;
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        text-align: center;
        transition: transform 0.2s;
    }
    
    .stats-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    }
    
    .stats-number {
        font-size: 2.5rem;
        font-weight: bold;
        margin: 10px 0;
    }
    
    .stats-label {
        color: #6c757d;
        font-size: 0.9rem;
        text-transform: uppercase;
    }
    
    .session-card {
        background: white;
        border-radius: 8px;
        padding: 15px;
        margin-bottom: 10px;
        border-left: 4px solid #28a745;
        transition: all 0.2s;
    }
    
    .session-card:hover {
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    }
    
    .activity-indicator {
        display: inline-block;
        width: 10px;
        height: 10px;
        border-radius: 50%;
        margin-right: 5px;
        animation: pulse 2s infinite;
    }
    
    .activity-active {
        background-color: #28a745;
    }
    
    .activity-recent {
        background-color: #ffc107;
    }
    
    .activity-inactive {
        background-color: #6c757d;
    }
    
    @keyframes pulse {
        0% { opacity: 1; }
        50% { opacity: 0.5; }
        100% { opacity: 1; }
    }
    
    .geo-info {
        font-size: 0.85rem;
        color: #6c757d;
    }
    
    .device-info {
        background: #f8f9fa;
        padding: 5px 10px;
        border-radius: 15px;
        font-size: 0.85rem;
        display: inline-block;
        margin: 2px;
    }
</style>
{% endblock %}

{% block content %}
<div class="row mb-4">
    <div class="col">
        <h2><i class="bi bi-activity"></i> Live Dashboard</h2>
        <p class="text-muted">Echtzeit-Übersicht der aktiven Kunden-Sessions</p>
    </div>
    <div class="col-auto">
        <span class="text-muted">Auto-Refresh: <span id="refresh-countdown">30</span>s</span>
        <button class="btn btn-sm btn-outline-primary ms-2" onclick="refreshData()">
            <i class="bi bi-arrow-clockwise"></i> Jetzt aktualisieren
        </button>
    </div>
</div>

<!-- Statistics Cards -->
<div class="row mb-4">
    <div class="col-md-4">
        <div class="stats-card">
            <i class="bi bi-people-fill text-primary" style="font-size: 2rem;"></i>
            <div class="stats-number text-primary">{{ stats.active_licenses|default(0) }}</div>
            <div class="stats-label">Aktive Kunden</div>
        </div>
    </div>
    <div class="col-md-4">
        <div class="stats-card">
            <i class="bi bi-laptop text-success" style="font-size: 2rem;"></i>
            <div class="stats-number text-success">{{ stats.active_devices|default(0) }}</div>
            <div class="stats-label">Aktive Geräte</div>
        </div>
    </div>
    <div class="col-md-4">
        <div class="stats-card">
            <i class="bi bi-speedometer2 text-info" style="font-size: 2rem;"></i>
            <div class="stats-number text-info" id="validations-per-minute">0</div>
            <div class="stats-label">Validierungen/Min</div>
        </div>
    </div>
</div>

<!-- Activity Timeline Chart -->
<div class="card mb-4">
    <div class="card-header">
        <h5 class="mb-0"><i class="bi bi-graph-up"></i> Aktivität (letzte 60 Minuten)</h5>
    </div>
    <div class="card-body">
        <canvas id="activityChart" height="80"></canvas>
    </div>
</div>

<!-- Active Sessions -->
<div class="card">
    <div class="card-header">
        <h5 class="mb-0"><i class="bi bi-people"></i> Aktive Kunden-Sessions</h5>
    </div>
    <div class="card-body">
        <div id="active-sessions-container">
            {% for session in active_sessions %}
            <div class="session-card">
                <div class="row align-items-center">
                    <div class="col-md-4">
                        <h6 class="mb-1">
                            <span class="activity-indicator activity-active"></span>
                            {{ session.company_name }}
                        </h6>
                        <small class="text-muted">{{ session.contact_person }}</small>
                    </div>
                    <div class="col-md-3">
                        <div class="mb-1">
                            <i class="bi bi-key"></i> {{ session.license_key[:8] }}...
                        </div>
                        <div class="device-info">
                            <i class="bi bi-laptop"></i> {{ session.active_devices }} Gerät(e)
                        </div>
                    </div>
                    <div class="col-md-3">
                        <div class="geo-info">
                            <i class="bi bi-geo-alt"></i> {{ session.ip_address }}
                            <div><small>Hardware: {{ session.hardware_id[:12] }}...</small></div>
                        </div>
                    </div>
                    <div class="col-md-2 text-end">
                        <div class="text-muted">
                            <i class="bi bi-clock"></i> 
                            <span class="last-activity" data-timestamp="{{ session.last_activity }}">
                                vor wenigen Sekunden
                            </span>
                        </div>
                    </div>
                </div>
            </div>
            {% else %}
            <div class="text-center text-muted py-5">
                <i class="bi bi-inbox" style="font-size: 3rem;"></i>
                <p>Keine aktiven Sessions in den letzten 5 Minuten</p>
            </div>
            {% endfor %}
        </div>
    </div>
</div>

<!-- Hidden validation timeline data for chart -->
<script id="validation-timeline-data" type="application/json">
{{ validation_timeline|tojson }}
</script>
{% endblock %}

{% block extra_js %}
<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.0/dist/chart.umd.js"></script>
<script src="https://cdn.jsdelivr.net/npm/date-fns@2.29.3/index.min.js"></script>
<script>
    let activityChart;
    let refreshInterval;
    let refreshCountdown = 30;
    
    // Initialize activity chart
    function initActivityChart() {
        const ctx = document.getElementById('activityChart').getContext('2d');
        const timelineData = JSON.parse(document.getElementById('validation-timeline-data').textContent);
        
        // Prepare data for chart
        const labels = timelineData.map(item => {
            const date = new Date(item.minute);
            return date.toLocaleTimeString('de-DE', { hour: '2-digit', minute: '2-digit' });
        }).reverse();
        
        const data = timelineData.map(item => item.validations).reverse();
        
        activityChart = new Chart(ctx, {
            type: 'line',
            data: {
                labels: labels,
                datasets: [{
                    label: 'Validierungen',
                    data: data,
                    borderColor: 'rgb(75, 192, 192)',
                    backgroundColor: 'rgba(75, 192, 192, 0.1)',
                    tension: 0.1,
                    fill: true
                }]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                plugins: {
                    legend: {
                        display: false
                    }
                },
                scales: {
                    y: {
                        beginAtZero: true
                    }
                }
            }
        });
    }
    
    // Update last activity times
    function updateActivityTimes() {
        document.querySelectorAll('.last-activity').forEach(el => {
            const timestamp = new Date(el.dataset.timestamp);
            const now = new Date();
            const seconds = Math.floor((now - timestamp) / 1000);
            
            if (seconds < 60) {
                el.textContent = 'vor wenigen Sekunden';
            } else if (seconds < 3600) {
                const minutes = Math.floor(seconds / 60);
                el.textContent = `vor ${minutes} Minute${minutes > 1 ? 'n' : ''}`;
            } else {
                const hours = Math.floor(seconds / 3600);
                el.textContent = `vor ${hours} Stunde${hours > 1 ? 'n' : ''}`;
            }
        });
    }
    
    // Refresh data via AJAX
    async function refreshData() {
        try {
            // Get live stats
            const statsResponse = await fetch('/monitoring/api/live-stats');
            const stats = await statsResponse.json();
            
            // Update stats cards
            document.querySelector('.stats-number.text-primary').textContent = stats.active_licenses || 0;
            document.querySelector('.stats-number.text-success').textContent = stats.active_devices || 0;
            document.getElementById('validations-per-minute').textContent = stats.validations_last_minute || 0;
            
            // Get active sessions
            const sessionsResponse = await fetch('/monitoring/api/active-sessions');
            const sessions = await sessionsResponse.json();
            
            // Update sessions display
            updateSessionsDisplay(sessions);
            
            // Reset countdown
            refreshCountdown = 30;
            
        } catch (error) {
            console.error('Error refreshing data:', error);
        }
    }
    
    // Update sessions display
    function updateSessionsDisplay(sessions) {
        const container = document.getElementById('active-sessions-container');
        
        if (sessions.length === 0) {
            container.innerHTML = `
                <div class="text-center text-muted py-5">
                    <i class="bi bi-inbox" style="font-size: 3rem;"></i>
                    <p>Keine aktiven Sessions in den letzten 5 Minuten</p>
                </div>
            `;
            return;
        }
        
        const sessionsHtml = sessions.map(session => {
            const secondsAgo = Math.floor(session.seconds_ago);
            let activityClass = 'activity-active';
            if (secondsAgo > 120) activityClass = 'activity-recent';
            if (secondsAgo > 240) activityClass = 'activity-inactive';
            
            return `
                <div class="session-card">
                    <div class="row align-items-center">
                        <div class="col-md-4">
                            <h6 class="mb-1">
                                <span class="activity-indicator ${activityClass}"></span>
                                ${session.company_name}
                            </h6>
                        </div>
                        <div class="col-md-3">
                            <div class="mb-1">
                                <i class="bi bi-key"></i> ${session.license_key.substring(0, 8)}...
                            </div>
                        </div>
                        <div class="col-md-3">
                            <div class="geo-info">
                                <i class="bi bi-geo-alt"></i> ${session.ip_address}
                                <div><small>Hardware: ${session.hardware_id.substring(0, 12)}...</small></div>
                            </div>
                        </div>
                        <div class="col-md-2 text-end">
                            <div class="text-muted">
                                <i class="bi bi-clock"></i> 
                                vor ${formatSecondsAgo(secondsAgo)}
                            </div>
                        </div>
                    </div>
                </div>
            `;
        }).join('');
        
        container.innerHTML = sessionsHtml;
    }
    
    // Format seconds ago
    function formatSecondsAgo(seconds) {
        if (seconds < 60) return 'wenigen Sekunden';
        if (seconds < 3600) {
            const minutes = Math.floor(seconds / 60);
            return `${minutes} Minute${minutes > 1 ? 'n' : ''}`;
        }
        const hours = Math.floor(seconds / 3600);
        return `${hours} Stunde${hours > 1 ? 'n' : ''}`;
    }
    
    // Countdown timer
    function updateCountdown() {
        refreshCountdown--;
        document.getElementById('refresh-countdown').textContent = refreshCountdown;
        
        if (refreshCountdown <= 0) {
            refreshData();
        }
    }
    
    // Initialize on page load
    document.addEventListener('DOMContentLoaded', function() {
        initActivityChart();
        updateActivityTimes();
        
        // Set up auto-refresh
        refreshInterval = setInterval(() => {
            updateCountdown();
            updateActivityTimes();
        }, 1000);
    });
    
    // Clean up on page leave
    window.addEventListener('beforeunload', function() {
        if (refreshInterval) {
            clearInterval(refreshInterval);
        }
    });
</script>
{% endblock %}