{% extends "base.html" %}

{% block content %}
<div class="flex h-screen overflow-hidden" id="dashboard-view">
    <!-- Sidebar -->
    {% include 'partials/sidebar.html' %}

    <!-- Main Content -->
    <div class="flex-1 flex flex-col min-w-0 overflow-hidden bg-gray-900/80 relative">
        <!-- Top Header -->
        <header class="h-16 flex items-center justify-between px-6 z-20 bg-gray-900/80 backdrop-blur-md border-b border-blue-900/30">
            <button class="md:hidden text-gray-300 focus:outline-none" id="open-sidebar">
                <i class="fas fa-bars text-xl"></i>
            </button>
            <h1 class="text-lg md:text-2xl font-bold tech-title truncate ml-2">系统运行状态监控</h1>
            <div class="flex items-center space-x-4">
                <div class="relative">
                    <i class="fas fa-bell text-gray-400 hover:text-yellow-400 cursor-pointer transition"></i>
                    <span class="absolute -top-1 -right-1 bg-red-500 text-white text-xs rounded-full w-4 h-4 flex items-center justify-center">3</span>
                </div>
                <div class="flex items-center space-x-2">
                    <div class="w-8 h-8 rounded-full bg-blue-500 flex items-center justify-center text-white font-bold border border-cyan-400 shadow-md">A</div>
                    <span class="hidden md:inline text-sm text-gray-300">Admin</span>
                </div>
            </div>
        </header>

        <!-- Main Scrollable Area -->
        <main class="flex-1 overflow-y-auto p-4 md:p-6 scroll-smooth">
            <!-- Dashboard Home Module -->
            <div id="dashboard-home" class="space-y-6">
                <!-- Stat Cards -->
                <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4 md:gap-6">
                    <div class="tech-panel p-5 rounded-xl border-l-4 border-cyan-400 hover:shadow-cyan-500/50 transition duration-300">
                        <div class="flex justify-between items-center">
                            <p class="text-sm text-gray-400">总数据量</p>
                            <i class="fas fa-database text-3xl text-cyan-400"></i>
                        </div>
                        <p class="text-4xl font-bold mt-2" id="stat-total-data">...</p>
                        <p class="text-xs text-green-400 mt-1" id="stat-data-growth">Loading...</p>
                    </div>
                    <div class="tech-panel p-5 rounded-xl border-l-4 border-indigo-400 hover:shadow-indigo-500/50 transition duration-300">
                        <div class="flex justify-between items-center">
                            <p class="text-sm text-gray-400">总爬虫量</p>
                            <i class="fas fa-spider text-3xl text-indigo-400"></i>
                        </div>
                        <p class="text-4xl font-bold mt-2" id="stat-total-crawlers">...</p>
                        <p class="text-xs text-green-400 mt-1" id="stat-spider-growth">Loading...</p>
                    </div>
                    <div class="tech-panel p-5 rounded-xl border-l-4 border-purple-400 hover:shadow-purple-500/50 transition duration-300">
                        <div class="flex justify-between items-center">
                            <p class="text-sm text-gray-400">AI 引擎状态</p>
                            <i class="fas fa-brain text-3xl text-purple-400"></i>
                        </div>
                        <p class="text-xl font-bold mt-2 text-green-400" id="stat-ai-status">检测中...</p>
                        <p class="text-xs text-gray-500 mt-1" id="stat-ai-load">负载: -</p>
                        <p class="text-xs text-gray-500 mt-1" id="stat-ai-tokens">Token消耗: -</p>
                    </div>
                    <div class="tech-panel p-5 rounded-xl border-l-4 border-orange-400 hover:shadow-orange-500/50 transition duration-300">
                        <div class="flex justify-between items-center">
                            <p class="text-sm text-gray-400">系统告警</p>
                            <i class="fas fa-exclamation-triangle text-3xl text-orange-400"></i>
                        </div>
                        <p class="text-4xl font-bold mt-2 text-orange-300">3</p>
                        <p class="text-xs text-gray-500 mt-1">未处理</p>
                    </div>
                </div>

                <!-- Charts Section -->
                <div class="grid grid-cols-1 lg:grid-cols-2 gap-6">
                    <div class="tech-panel p-4 rounded-xl">
                        <h3 class="text-lg font-semibold mb-4 text-cyan-200 border-b border-blue-800 pb-2">
                            <i class="fas fa-chart-area mr-2"></i>数据采集趋势 (7天)
                        </h3>
                        <div id="chart-collection-trend" class="chart-container"></div>
                    </div>
                    <div class="tech-panel p-4 rounded-xl">
                        <h3 class="text-lg font-semibold mb-4 text-cyan-200 border-b border-blue-800 pb-2">
                            <i class="fas fa-chart-pie mr-2"></i>数据来源分布
                        </h3>
                        <div id="chart-data-source" class="chart-container"></div>
                    </div>
                </div>

                 <!-- System Status Detail -->
                 <div class="tech-panel p-4 rounded-xl">
                    <h3 class="text-lg font-semibold mb-4 text-cyan-200 border-b border-blue-800 pb-2">
                        <i class="fas fa-server mr-2"></i>系统资源监控
                    </h3>
                    <div id="chart-system-resource" class="chart-container" style="height: 250px;"></div>
                </div>
            </div>
            
            <!-- Placeholder for other modules -->
            <div id="other-modules" class="hidden text-center py-20">
                <i class="fas fa-tools text-6xl text-gray-600 mb-4"></i>
                <h2 class="text-2xl text-gray-400">功能模块开发中...</h2>
                <p class="text-gray-500 mt-2">请等待后续指令实现该模块功能</p>
            </div>
        </main>
    </div>
    
    <!-- Mobile Overlay -->
    <div class="fixed inset-0 bg-black bg-opacity-50 z-20 hidden" id="sidebar-overlay"></div>
</div>
{% endblock %}

{% block scripts %}
<script>
    // Sidebar Toggle Logic
    const sidebar = document.getElementById('sidebar');
    const openSidebarBtn = document.getElementById('open-sidebar');
    const closeSidebarBtn = document.getElementById('close-sidebar');
    const overlay = document.getElementById('sidebar-overlay');

    function toggleSidebar() {
        sidebar.classList.toggle('-translate-x-full');
        overlay.classList.toggle('hidden');
    }

    if (openSidebarBtn) openSidebarBtn.addEventListener('click', toggleSidebar);
    if (closeSidebarBtn) closeSidebarBtn.addEventListener('click', toggleSidebar);
    if (overlay) overlay.addEventListener('click', toggleSidebar);

    // ECharts Initialization
    document.addEventListener('DOMContentLoaded', function() {
        // Initialize Charts
        var chartCollection = echarts.init(document.getElementById('chart-collection-trend'));
        var chartSource = echarts.init(document.getElementById('chart-data-source'));
        var chartSystem = echarts.init(document.getElementById('chart-system-resource'));

        // Resize handler
        window.addEventListener('resize', function() {
            chartCollection.resize();
            chartSource.resize();
            chartSystem.resize();
        });

        // Fetch Data Function
        function fetchDashboardData() {
            fetch('/api/dashboard/stats')
                .then(response => response.json())
                .then(data => {
                    // 1. Update Stats
                    document.getElementById('stat-total-data').innerText = data.total_data.toLocaleString();
                    document.getElementById('stat-total-crawlers').innerText = data.total_spiders.toLocaleString();
                    document.getElementById('stat-ai-status').innerText = data.ai_status.status;
                    document.getElementById('stat-ai-load').innerText = '负载: ' + data.ai_status.load;
                    document.getElementById('stat-ai-tokens').innerText = 'Token消耗: ' + (data.ai_status.total_tokens || 0).toLocaleString();

                    // Update Growth Stats
                    const updateGrowth = (id, value) => {
                        const el = document.getElementById(id);
                        if(el) {
                            const sign = value >= 0 ? '+' : '';
                            el.innerText = `${sign}${value}% (24h)`;
                            el.className = `text-xs mt-1 ${value >= 0 ? 'text-green-400' : 'text-red-400'}`;
                        }
                    };
                    updateGrowth('stat-data-growth', data.data_growth);
                    updateGrowth('stat-spider-growth', data.spider_growth);

                    // 2. Update Trend Chart
                    chartCollection.setOption({
                        backgroundColor: 'transparent',
                        tooltip: { trigger: 'axis' },
                        grid: { left: '3%', right: '4%', bottom: '3%', containLabel: true },
                        xAxis: {
                            type: 'category',
                            boundaryGap: false,
                            data: data.trends.dates,
                            axisLine: { lineStyle: { color: '#57606f' } },
                            axisLabel: { color: '#a4b0be' }
                        },
                        yAxis: {
                            type: 'value',
                            axisLine: { show: false },
                            axisLabel: { color: '#a4b0be' },
                            splitLine: { lineStyle: { color: '#2f3542' } }
                        },
                        series: [{
                            name: '数据量',
                            type: 'line',
                            smooth: true,
                            data: data.trends.counts,
                            areaStyle: {
                                color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{
                                    offset: 0, color: 'rgba(59, 130, 246, 0.5)'
                                }, {
                                    offset: 1, color: 'rgba(59, 130, 246, 0)'
                                }])
                            },
                            itemStyle: { color: '#3b82f6' }
                        }]
                    });

                    // 3. Update Source Chart
                    chartSource.setOption({
                        backgroundColor: 'transparent',
                        tooltip: { trigger: 'item' },
                        legend: { bottom: '0%', left: 'center', textStyle: { color: '#a4b0be' } },
                        series: [{
                            name: '数据来源',
                            type: 'pie',
                            radius: ['40%', '70%'],
                            avoidLabelOverlap: false,
                            itemStyle: { borderRadius: 10, borderColor: '#1f2937', borderWidth: 2 },
                            label: { show: false, position: 'center' },
                            emphasis: {
                                label: { show: true, fontSize: '18', fontWeight: 'bold', color: '#fff' }
                            },
                            labelLine: { show: false },
                            data: data.sources
                        }]
                    });

                    // 4. Update System Chart
                    chartSystem.setOption({
                        backgroundColor: 'transparent',
                        tooltip: { trigger: 'axis', axisPointer: { type: 'shadow' } },
                        grid: { left: '3%', right: '4%', bottom: '3%', containLabel: true },
                        xAxis: {
                            type: 'value',
                            max: 100,
                            axisLine: { lineStyle: { color: '#57606f' } },
                            axisLabel: { color: '#a4b0be' },
                            splitLine: { lineStyle: { color: '#2f3542' } }
                        },
                        yAxis: {
                            type: 'category',
                            data: ['磁盘', '内存', 'CPU'],
                            axisLine: { lineStyle: { color: '#57606f' } },
                            axisLabel: { color: '#a4b0be' }
                        },
                        series: [{
                            name: '使用率 (%)',
                            type: 'bar',
                            data: [
                                { value: data.system.disk, itemStyle: { color: '#f59e0b' } },
                                { value: data.system.memory, itemStyle: { color: '#8b5cf6' } },
                                { value: data.system.cpu, itemStyle: { color: '#ef4444' } }
                            ],
                            label: { show: true, position: 'right', color: '#fff', formatter: '{c}%' },
                            showBackground: true,
                            backgroundStyle: { color: 'rgba(255, 255, 255, 0.05)' }
                        }]
                    });

                })
                .catch(err => console.error('Failed to fetch dashboard data:', err));
        }

        // Initial fetch
        fetchDashboardData();

        // Poll every 5 seconds
        setInterval(fetchDashboardData, 5000);
    });
</script>
{% endblock %}