{% extends "base.html" %}
{% load i18n %}
{% load static %}

{% block head %}
<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.0/dist/chart.umd.min.js"></script>
<style>
    .stat-card {
        border-left: 4px solid #2b3c91;
        transition: transform 0.2s;
    }
    .stat-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    }
    .stat-number {
        font-size: 2.5rem;
        font-weight: bold;
        color: #2b3c91;
    }
    .stat-label {
        color: #6c757d;
        font-size: 0.9rem;
    }
    .chart-container {
        position: relative;
        height: 400px;
    }
</style>
{% endblock %}

{% block content %}
<div class="container-fluid mt-4">
    <div class="row mb-4">
        <div class="col-12">
            <div class="d-flex justify-content-between align-items-center">
                <h1><i class="bi bi-graph-up me-2"></i>{% translate "Tableau de bord Analytics" %}</h1>
                <div class="btn-group" role="group">
                    <a href="?days=7" class="btn btn-sm {% if days == 7 %}btn-primary{% else %}btn-outline-primary{% endif %}">7j</a>
                    <a href="?days=30" class="btn btn-sm {% if days == 30 %}btn-primary{% else %}btn-outline-primary{% endif %}">30j</a>
                    <a href="?days=90" class="btn btn-sm {% if days == 90 %}btn-primary{% else %}btn-outline-primary{% endif %}">90j</a>
                </div>
            </div>
        </div>
    </div>

    <!-- Statistiques principales -->
    <div class="row g-3 mb-4">
        <div class="col-md-3">
            <div class="card stat-card h-100">
                <div class="card-body">
                    <div class="stat-number">{{ stats.total_users }}</div>
                    <div class="stat-label">{% translate "Utilisateurs totaux" %}</div>
                </div>
            </div>
        </div>
        <div class="col-md-3">
            <div class="card stat-card h-100">
                <div class="card-body">
                    <div class="stat-number">{{ stats.active_users }}</div>
                    <div class="stat-label">{% translate "Utilisateurs actifs" %} ({{ days }}j)</div>
                </div>
            </div>
        </div>
        <div class="col-md-3">
            <div class="card stat-card h-100">
                <div class="card-body">
                    <div class="stat-number">{{ stats.total_sessions }}</div>
                    <div class="stat-label">{% translate "Sessions totales" %} ({{ days }}j)</div>
                </div>
            </div>
        </div>
        <div class="col-md-3">
            <div class="card stat-card h-100">
                <div class="card-body">
                    <div class="stat-number">{{ stats.sessions_per_user }}</div>
                    <div class="stat-label">{% translate "Sessions par utilisateur" %}</div>
                </div>
            </div>
        </div>
    </div>

    <div class="row g-3 mb-4">
        <div class="col-md-4">
            <div class="card stat-card h-100">
                <div class="card-body">
                    <div class="stat-number">{{ stats.total_page_views }}</div>
                    <div class="stat-label">{% translate "Pages vues" %} ({{ days }}j)</div>
                </div>
            </div>
        </div>
        <div class="col-md-4">
            <div class="card stat-card h-100">
                <div class="card-body">
                    <div class="stat-number">{{ stats.active_sessions }}</div>
                    <div class="stat-label">{% translate "Sessions actives" %}</div>
                </div>
            </div>
        </div>
        <div class="col-md-4">
            <div class="card stat-card h-100">
                <div class="card-body">
                    <div class="stat-number">{{ stats.avg_response_time|floatformat:0 }} ms</div>
                    <div class="stat-label">{% translate "Temps de réponse moyen" %}</div>
                </div>
            </div>
        </div>
    </div>

    <!-- Graphiques -->
    <div class="row g-3 mb-4">
        <div class="col-lg-8">
            <div class="card">
                <div class="card-header">
                    <h5 class="mb-0">{% translate "Activité quotidienne" %}</h5>
                </div>
                <div class="card-body">
                    <div class="chart-container">
                        <canvas id="dailyActivityChart"></canvas>
                    </div>
                </div>
            </div>
        </div>
        <div class="col-lg-4">
            <div class="card">
                <div class="card-header">
                    <h5 class="mb-0">{% translate "Activité horaire (24h)" %}</h5>
                </div>
                <div class="card-body">
                    <div class="chart-container">
                        <canvas id="hourlyActivityChart"></canvas>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Pages et utilisateurs populaires -->
    <div class="row g-3 mb-4">
        <div class="col-lg-6">
            <div class="card">
                <div class="card-header d-flex justify-content-between align-items-center">
                    <h5 class="mb-0">{% translate "Pages les plus visitées" %}</h5>
                    <a href="{% url 'analytics:page_views_list' %}" class="btn btn-sm btn-outline-primary">{% translate "Voir tout" %}</a>
                </div>
                <div class="card-body">
                    <div class="table-responsive">
                        <table class="table table-hover">
                            <thead>
                                <tr>
                                    <th>{% translate "Page" %}</th>
                                    <th class="text-end">{% translate "Visites" %}</th>
                                </tr>
                            </thead>
                            <tbody>
                                {% for page in top_pages %}
                                <tr>
                                    <td><code>{{ page.path }}</code></td>
                                    <td class="text-end"><strong>{{ page.count }}</strong></td>
                                </tr>
                                {% empty %}
                                <tr>
                                    <td colspan="2" class="text-center text-muted">{% translate "Aucune donnée" %}</td>
                                </tr>
                                {% endfor %}
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
        <div class="col-lg-6">
            <div class="card">
                <div class="card-header d-flex justify-content-between align-items-center">
                    <h5 class="mb-0">{% translate "Utilisateurs les plus actifs" %}</h5>
                    <a href="{% url 'analytics:sessions_list' %}" class="btn btn-sm btn-outline-primary">{% translate "Voir tout" %}</a>
                </div>
                <div class="card-body">
                    <div class="table-responsive">
                        <table class="table table-hover">
                            <thead>
                                <tr>
                                    <th>{% translate "Utilisateur" %}</th>
                                    <th class="text-end">{% translate "Vues" %}</th>
                                    <th class="text-end">{% translate "Sessions" %}</th>
                                </tr>
                            </thead>
                            <tbody>
                                {% for user in top_users %}
                                <tr>
                                    <td>{{ user.user__username }}</td>
                                    <td class="text-end"><strong>{{ user.views }}</strong></td>
                                    <td class="text-end">{{ user.sessions }}</td>
                                </tr>
                                {% empty %}
                                <tr>
                                    <td colspan="3" class="text-center text-muted">{% translate "Aucune donnée" %}</td>
                                </tr>
                                {% endfor %}
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block script %}
<script>
const chartData = {{ chart_data|safe }};
const hourlyChartData = {{ hourly_chart_data|safe }};

// Graphique activité quotidienne
const dailyCtx = document.getElementById('dailyActivityChart').getContext('2d');
new Chart(dailyCtx, {
    type: 'line',
    data: {
        labels: chartData.labels,
        datasets: [
            {
                label: '{% translate "Vues de pages" %}',
                data: chartData.views,
                borderColor: 'rgb(43, 60, 145)',
                backgroundColor: 'rgba(43, 60, 145, 0.1)',
                tension: 0.4
            },
            {
                label: '{% translate "Utilisateurs" %}',
                data: chartData.users,
                borderColor: 'rgb(75, 192, 192)',
                backgroundColor: 'rgba(75, 192, 192, 0.1)',
                tension: 0.4
            },
            {
                label: '{% translate "Sessions" %}',
                data: chartData.sessions,
                borderColor: 'rgb(255, 159, 64)',
                backgroundColor: 'rgba(255, 159, 64, 0.1)',
                tension: 0.4
            }
        ]
    },
    options: {
        responsive: true,
        maintainAspectRatio: false,
        plugins: {
            legend: {
                position: 'top',
            }
        },
        scales: {
            y: {
                beginAtZero: true
            }
        }
    }
});

// Graphique activité horaire
const hourlyCtx = document.getElementById('hourlyActivityChart').getContext('2d');
new Chart(hourlyCtx, {
    type: 'bar',
    data: {
        labels: hourlyChartData.labels,
        datasets: [{
            label: '{% translate "Vues" %}',
            data: hourlyChartData.values,
            backgroundColor: 'rgba(43, 60, 145, 0.7)',
            borderColor: 'rgb(43, 60, 145)',
            borderWidth: 1
        }]
    },
    options: {
        responsive: true,
        maintainAspectRatio: false,
        plugins: {
            legend: {
                display: false
            }
        },
        scales: {
            y: {
                beginAtZero: true
            }
        }
    }
});
</script>
{% endblock %}