{% extends "base.html" %}

{% block title %}统计分析 - 软件授权管理系统{% endblock %}

{% block page_title %}统计分析{% endblock %}

{% block content %}
<!-- 统计卡片 -->
<div class="row mb-4">
    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card card-stats">
            <div class="card-body">
                <div class="row">
                    <div class="col">
                        <h5 class="card-title text-uppercase text-muted mb-0">产品总数</h5>
                        <span class="h2 font-weight-bold mb-0" id="total-products">-</span>
                    </div>
                    <div class="col-auto">
                        <div class="icon icon-shape bg-white text-primary rounded-circle shadow">
                            <i class="fas fa-box"></i>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card card-stats">
            <div class="card-body">
                <div class="row">
                    <div class="col">
                        <h5 class="card-title text-uppercase text-muted mb-0">卡密总数</h5>
                        <span class="h2 font-weight-bold mb-0" id="total-licenses">-</span>
                    </div>
                    <div class="col-auto">
                        <div class="icon icon-shape bg-white text-warning rounded-circle shadow">
                            <i class="fas fa-key"></i>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card card-stats">
            <div class="card-body">
                <div class="row">
                    <div class="col">
                        <h5 class="card-title text-uppercase text-muted mb-0">设备总数</h5>
                        <span class="h2 font-weight-bold mb-0" id="total-devices">-</span>
                    </div>
                    <div class="col-auto">
                        <div class="icon icon-shape bg-white text-success rounded-circle shadow">
                            <i class="fas fa-desktop"></i>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <div class="col-xl-3 col-md-6 mb-4">
        <div class="card card-stats">
            <div class="card-body">
                <div class="row">
                    <div class="col">
                        <h5 class="card-title text-uppercase text-muted mb-0">工单总数</h5>
                        <span class="h2 font-weight-bold mb-0" id="total-tickets">-</span>
                    </div>
                    <div class="col-auto">
                        <div class="icon icon-shape bg-white text-info rounded-circle shadow">
                            <i class="fas fa-ticket-alt"></i>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- 图表区域 -->
<div class="row mb-4">
    <div class="col-lg-8">
        <div class="card shadow">
            <div class="card-header bg-white">
                <h6 class="m-0 font-weight-bold">激活趋势（最近30天）</h6>
            </div>
            <div class="card-body">
                <canvas id="activationChart" height="300"></canvas>
            </div>
        </div>
    </div>

    <div class="col-lg-4">
        <div class="card shadow">
            <div class="card-header bg-white">
                <h6 class="m-0 font-weight-bold">产品分布</h6>
            </div>
            <div class="card-body">
                <canvas id="productDistributionChart" height="300"></canvas>
            </div>
        </div>
    </div>
</div>

<!-- 详细统计 -->
<div class="row">
    <div class="col-lg-6">
        <div class="card shadow">
            <div class="card-header bg-white">
                <h6 class="m-0 font-weight-bold">最近激活的卡密</h6>
            </div>
            <div class="card-body">
                <div class="table-responsive">
                    <table class="table table-sm">
                        <thead>
                            <tr>
                                <th>卡密</th>
                                <th>产品</th>
                                <th>激活时间</th>
                            </tr>
                        </thead>
                        <tbody id="recent-activations">
                            <tr>
                                <td colspan="3" class="text-center text-muted">加载中...</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>

    <div class="col-lg-6">
        <div class="card shadow">
            <div class="card-header bg-white">
                <h6 class="m-0 font-weight-bold">热门产品</h6>
            </div>
            <div class="card-body">
                <div class="table-responsive">
                    <table class="table table-sm">
                        <thead>
                            <tr>
                                <th>产品名称</th>
                                <th>卡密数</th>
                                <th>设备数</th>
                            </tr>
                        </thead>
                        <tbody id="popular-products">
                            <tr>
                                <td colspan="3" class="text-center text-muted">加载中...</td>
                            </tr>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
let activationChart, productDistributionChart;

// 页面加载完成后初始化
document.addEventListener('DOMContentLoaded', function() {
    loadStatistics();
    initCharts();
});

// 加载统计数据
function loadStatistics() {
    // 加载总览统计
    apiRequest('/api/v1/statistics/overview')
        .then(data => {
            if (data.success) {
                const stats = data.data;
                document.getElementById('total-products').textContent = stats.products.total;
                document.getElementById('total-licenses').textContent = stats.licenses.total;
                document.getElementById('total-devices').textContent = stats.devices.total;
                document.getElementById('total-tickets').textContent = stats.tickets.total;
            }
        })
        .catch(error => {
            console.error('Failed to load statistics:', error);
        });

    // 加载激活趋势
    apiRequest('/api/v1/statistics/activations?days=30')
        .then(data => {
            if (data.success && activationChart) {
                const labels = data.data.activations.map(item => {
                    const date = new Date(item.date);
                    return `${date.getMonth() + 1}/${date.getDate()}`;
                });
                const counts = data.data.activations.map(item => item.count);

                activationChart.data.labels = labels;
                activationChart.data.datasets[0].data = counts;
                activationChart.update();
            }
        })
        .catch(error => {
            console.error('Failed to load activation trend:', error);
        });

    // 加载产品分布
    apiRequest('/api/v1/statistics/products')
        .then(data => {
            if (data.success && productDistributionChart) {
                const products = data.data.products.slice(0, 5); // 只显示前5个产品
                const labels = products.map(p => p.product_name);
                const counts = products.map(p => p.license_count);

                productDistributionChart.data.labels = labels;
                productDistributionChart.data.datasets[0].data = counts;
                productDistributionChart.update();
            }
        })
        .catch(error => {
            console.error('Failed to load product distribution:', error);
        });

    // 加载最近激活
    loadRecentActivations();

    // 加载热门产品
    loadPopularProducts();
}

// 初始化图表
function initCharts() {
    // 激活趋势图表
    const activationCtx = document.getElementById('activationChart').getContext('2d');
    activationChart = new Chart(activationCtx, {
        type: 'line',
        data: {
            labels: [],
            datasets: [{
                label: '激活数',
                data: [],
                borderColor: 'rgb(75, 192, 192)',
                backgroundColor: 'rgba(75, 192, 192, 0.1)',
                tension: 0.1
            }]
        },
        options: {
            responsive: true,
            maintainAspectRatio: false,
            plugins: {
                legend: {
                    display: false
                }
            },
            scales: {
                y: {
                    beginAtZero: true,
                    ticks: {
                        stepSize: 1
                    }
                }
            }
        }
    });

    // 产品分布图表
    const productDistributionCtx = document.getElementById('productDistributionChart').getContext('2d');
    productDistributionChart = new Chart(productDistributionCtx, {
        type: 'doughnut',
        data: {
            labels: [],
            datasets: [{
                data: [],
                backgroundColor: [
                    'rgba(255, 99, 132, 0.8)',
                    'rgba(54, 162, 235, 0.8)',
                    'rgba(255, 206, 86, 0.8)',
                    'rgba(75, 192, 192, 0.8)',
                    'rgba(153, 102, 255, 0.8)'
                ]
            }]
        },
        options: {
            responsive: true,
            maintainAspectRatio: false,
            plugins: {
                legend: {
                    position: 'bottom'
                }
            }
        }
    });
}

// 加载最近激活
function loadRecentActivations() {
    apiRequest('/api/v1/licenses?status=1&per_page=5&sort=activate_time&order=desc')
        .then(data => {
            if (data.success) {
                const tbody = document.getElementById('recent-activations');
                tbody.innerHTML = '';

                if (data.data.licenses.length === 0) {
                    tbody.innerHTML = '<tr><td colspan="3" class="text-center text-muted">暂无数据</td></tr>';
                    return;
                }

                data.data.licenses.forEach(license => {
                    const row = `
                        <tr>
                            <td><code>${license.license_key.substring(0, 8)}...</code></td>
                            <td>${license.product_name || '-'}</td>
                            <td>${formatDate(license.activate_time)}</td>
                        </tr>
                    `;
                    tbody.innerHTML += row;
                });
            }
        })
        .catch(error => {
            console.error('Failed to load recent activations:', error);
        });
}

// 加载热门产品
function loadPopularProducts() {
    apiRequest('/api/v1/statistics/products')
        .then(data => {
            if (data.success) {
                const tbody = document.getElementById('popular-products');
                tbody.innerHTML = '';

                if (data.data.products.length === 0) {
                    tbody.innerHTML = '<tr><td colspan="3" class="text-center text-muted">暂无数据</td></tr>';
                    return;
                }

                // 显示前5个产品
                data.data.products.slice(0, 5).forEach(product => {
                    const row = `
                        <tr>
                            <td>${product.product_name}</td>
                            <td>${product.license_count}</td>
                            <td>${product.device_count}</td>
                        </tr>
                    `;
                    tbody.innerHTML += row;
                });
            }
        })
        .catch(error => {
            console.error('Failed to load popular products:', error);
        });
}
</script>
{% endblock %}