File size: 40,065 Bytes
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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>English Helper - Admin Panel</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
    <style>

        /* Tailwind utility classes should be used directly in HTML, not via @apply in <style> */

        .spinner {

            border: 3px solid #f3f3f3;

            border-top: 3px solid #3498db;

            border-radius: 50%;

            width: 20px;

            height: 20px;

            animation: spin 1s linear infinite;

            display: inline-block;

            margin-right: 10px;

        }

        @keyframes spin {

            0% { transform: rotate(0deg); }

            100% { transform: rotate(360deg); }

        }

        .table-container {

            max-height: 600px;

            overflow-y: auto;

        }

    </style>
</head>
<body class="bg-gray-100 min-h-screen">
    <!-- Admin Login Modal removed: admin panel is always accessible -->

    <!-- Admin Interface -->
    <div id="adminInterface">
        <!-- Header -->
        <header class="bg-white shadow-md">
            <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
                <div class="flex justify-between items-center py-4">
                    <div class="flex items-center">
                        <h1 class="text-2xl font-bold text-gray-900">🎓 English Helper Admin</h1>
                    </div>
                    <!-- Admin user info and logout removed -->
                </div>
            </div>
        </header>

        <!-- Navigation Tabs -->
        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 mt-6">
            <div class="border-b border-gray-200">
                <nav class="-mb-px flex space-x-8">
                    <button onclick="showTab('dashboard')" class="admin-tab active" data-tab="dashboard">
                        📊 Dashboard
                    </button>
                    <button onclick="showTab('users')" class="admin-tab" data-tab="users">
                        👥 Users
                    </button>
                    <button onclick="showTab('database')" class="admin-tab" data-tab="database">
                        🗄️ Database
                    </button>
                    <button onclick="showTab('tokens')" class="admin-tab" data-tab="tokens">
                        🎯 Token Usage
                    </button>
                    <button onclick="showTab('system')" class="admin-tab" data-tab="system">
                        🖥️ System Health
                    </button>
                </nav>
            </div>
        </div>

        <!-- Tab Content -->
        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-6">
            <!-- Dashboard Tab -->
            <div id="dashboardTab" class="tab-content">
                <h2 class="text-2xl font-bold mb-6">📊 System Dashboard</h2>
                
                <!-- System Stats Cards -->
                <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6 mb-8">
                    <div class="stat-card">
                        <h3 class="text-lg font-semibold mb-2">👥 Total Users</h3>
                        <p id="totalUsers" class="text-3xl font-bold">-</p>
                        <p class="text-sm opacity-80">
                            <span id="newUsersWeek">-</span> this week
                        </p>
                    </div>
                    <div class="stat-card">
                        <h3 class="text-lg font-semibold mb-2">📚 Study Sessions</h3>
                        <p id="totalSessions" class="text-3xl font-bold">-</p>
                        <p class="text-sm opacity-80">All time</p>
                    </div>
                    <div class="stat-card">
                        <h3 class="text-lg font-semibold mb-2">🎯 API Tokens</h3>
                        <p id="totalTokens" class="text-3xl font-bold">-</p>
                        <p class="text-sm opacity-80">
                            $<span id="estimatedCost">-</span> estimated cost
                        </p>
                    </div>
                    <div class="stat-card">
                        <h3 class="text-lg font-semibold mb-2">📝 Content Items</h3>
                        <p id="totalContent" class="text-3xl font-bold">-</p>
                        <p class="text-sm opacity-80">Articles & flashcards</p>
                    </div>
                </div>

                <!-- Charts Section -->
                <div class="grid grid-cols-1 lg:grid-cols-2 gap-6 mb-8">
                    <div class="admin-card">
                        <h3 class="text-lg font-semibold mb-4">📈 User Growth</h3>
                        <canvas id="userGrowthChart" width="400" height="200"></canvas>
                    </div>
                    <div class="admin-card">
                        <h3 class="text-lg font-semibold mb-4">💰 Token Usage Costs</h3>
                        <canvas id="tokenCostChart" width="400" height="200"></canvas>
                    </div>
                </div>

                <!-- Recent Activity -->
                <div class="admin-card">
                    <h3 class="text-lg font-semibold mb-4">🔄 Recent Activity</h3>
                    <div id="recentActivity" class="space-y-2">
                        <div class="text-center text-gray-500 py-4">Loading recent activity...</div>
                    </div>
                </div>
            </div>

            <!-- Users Tab -->
            <!-- Users Tab removed: user management is not available in open version -->

            <!-- Database Tab -->
            <div id="databaseTab" class="tab-content hidden">
                <h2 class="text-2xl font-bold mb-6">🗄️ Database Overview</h2>
                
                <div class="admin-card">
                    <h3 class="text-lg font-semibold mb-4">📋 Database Schema</h3>
                    <div id="databaseSchema" class="space-y-4">
                        <div class="text-center text-gray-500 py-4">Loading schema...</div>
                    </div>
                </div>
            </div>

            <!-- Token Usage Tab -->
            <div id="tokensTab" class="tab-content hidden">
                <div class="flex justify-between items-center mb-6">
                    <h2 class="text-2xl font-bold">🎯 Token Usage Analytics</h2>
                    <button onclick="exportTokens()" class="bg-green-500 text-white px-4 py-2 rounded-lg hover:bg-green-600">
                        📥 Export Token Data
                    </button>
                </div>
                
                <div class="grid grid-cols-1 lg:grid-cols-2 gap-6">
                    <div class="admin-card">
                        <h3 class="text-lg font-semibold mb-4">📊 Usage by Provider</h3>
                        <canvas id="providerUsageChart" width="400" height="300"></canvas>
                    </div>
                    <div class="admin-card">
                        <h3 class="text-lg font-semibold mb-4">💰 Cost Breakdown</h3>
                        <canvas id="costBreakdownChart" width="400" height="300"></canvas>
                    </div>
                </div>
            </div>

            <!-- System Health Tab -->
            <div id="systemTab" class="tab-content hidden">
                <h2 class="text-2xl font-bold mb-6">🖥️ System Health Monitor</h2>
                
                <!-- System Alerts -->
                <div class="admin-card mb-6">
                    <h3 class="text-lg font-semibold mb-4">⚠️ System Alerts</h3>
                    <div id="systemAlerts">
                        <div class="text-center text-gray-500 py-4">Loading alerts...</div>
                    </div>
                </div>

                <!-- System Metrics -->
                <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6 mb-6">
                    <div class="admin-card">
                        <h4 class="font-semibold mb-3">💾 Memory Usage</h4>
                        <div id="memoryMetrics">
                            <div class="text-sm text-gray-500">Loading...</div>
                        </div>
                    </div>
                    
                    <div class="admin-card">
                        <h4 class="font-semibold mb-3">💿 Disk Usage</h4>
                        <div id="diskMetrics">
                            <div class="text-sm text-gray-500">Loading...</div>
                        </div>
                    </div>
                    
                    <div class="admin-card">
                        <h4 class="font-semibold mb-3">🗄️ Database</h4>
                        <div id="databaseMetrics">
                            <div class="text-sm text-gray-500">Loading...</div>
                        </div>
                    </div>
                </div>

                <!-- Error Logs -->
                <div class="admin-card">
                    <h3 class="text-lg font-semibold mb-4">🚨 Recent Errors</h3>
                    <div id="errorLogs">
                        <div class="text-center text-gray-500 py-4">Loading error logs...</div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- User Detail Modal removed -->

    <!-- Toast Notifications -->
    <div id="toastContainer" class="fixed top-4 right-4 z-50"></div>

    <script>

        // User logic, authentication, and user management removed. Admin panel is always accessible.



        // Tab management (users tab removed)

        function showTab(tabName) {

            document.querySelectorAll('.tab-content').forEach(tab => {

                tab.classList.add('hidden');

            });

            document.querySelectorAll('.admin-tab').forEach(btn => {

                btn.classList.remove('active', 'border-blue-500', 'text-blue-600');

                btn.classList.add('border-transparent', 'text-gray-500');

            });

            document.getElementById(tabName + 'Tab').classList.remove('hidden');

            const activeBtn = document.querySelector(`[data-tab="${tabName}"]`);

            activeBtn.classList.add('active', 'border-blue-500', 'text-blue-600');

            activeBtn.classList.remove('border-transparent', 'text-gray-500');

            if (tabName === 'dashboard') {

                loadDashboard();

            } else if (tabName === 'database') {

                loadDatabaseSchema();

            } else if (tabName === 'tokens') {

                loadTokenUsage();

            } else if (tabName === 'system') {

                loadSystemHealth();

            }

        }



        async function loadDashboard() {

            try {

                const response = await fetch('/admin/dashboard');

                const data = await response.json();

                

                if (data.success) {

                    const stats = data.stats;

                    

                    // Update stat cards

                    document.getElementById('totalUsers').textContent = stats.users?.total || 0;

                    document.getElementById('newUsersWeek').textContent = stats.users?.new_week || 0;

                    document.getElementById('totalSessions').textContent = stats.activity?.total_sessions || 0;

                    document.getElementById('totalTokens').textContent = (stats.api_usage?.total_tokens || 0).toLocaleString();

                    document.getElementById('estimatedCost').textContent = stats.api_usage?.estimated_cost || '0.00';

                    document.getElementById('totalContent').textContent = 

                        (stats.activity?.total_flashcards || 0) + (stats.activity?.total_articles || 0);

                    

                    // Update recent activity

                    updateRecentActivity(stats.recent_activity || []);

                    

                    // Create charts

                    createCharts(stats);

                }

            } catch (error) {

                console.error('Dashboard loading error:', error);

                showToast('Failed to load dashboard', 'error');

            }

        }



        function updateRecentActivity(activities) {

            const container = document.getElementById('recentActivity');

            

            if (activities.length === 0) {

                container.innerHTML = '<div class="text-center text-gray-500 py-4">No recent activity</div>';

                return;

            }

            

            container.innerHTML = activities.map(activity => `

                <div class="flex items-center justify-between py-2 border-b border-gray-100">

                    <div>

                        <span class="font-medium">${activity.user}</span>

                        <span class="text-gray-600">performed ${activity.activity}</span>

                    </div>

                    <span class="text-sm text-gray-500">${formatDate(activity.timestamp)}</span>

                </div>

            `).join('');

        }



        async function loadUsers() {

            try {

                const response = await fetch(`/admin/users?page=${currentPage}&per_page=20`);

                const data = await response.json();

                

                if (data.success) {

                    usersData = data.data;

                    updateUsersTable(usersData.users);

                    updateUsersPagination(usersData);

                }

            } catch (error) {

                console.error('Users loading error:', error);

                showToast('Failed to load users', 'error');

            }

        }



        function updateUsersTable(users) {

            const tbody = document.getElementById('usersTableBody');

            

            if (users.length === 0) {

                tbody.innerHTML = '<tr><td colspan="5" class="text-center py-8">No users found</td></tr>';

                return;

            }

            

            tbody.innerHTML = users.map(user => `

                <tr class="border-b hover:bg-gray-50">

                    <td class="px-4 py-3">

                        <div>

                            <div class="font-medium">${user.email}</div>

                            <div class="text-sm text-gray-500">ID: ${user.id}</div>

                        </div>

                    </td>

                    <td class="px-4 py-3 text-sm text-gray-600">

                        ${formatDate(user.created_at)}

                    </td>

                    <td class="px-4 py-3">

                        <div class="text-sm">

                            <div>${user.session_count} sessions</div>

                            <div class="text-gray-500">${user.flashcard_count} cards, ${user.article_count} articles</div>

                        </div>

                    </td>

                    <td class="px-4 py-3">

                        <span class="px-2 py-1 text-xs rounded-full ${user.email_confirmed ? 'bg-green-100 text-green-800' : 'bg-yellow-100 text-yellow-800'}">

                            ${user.email_confirmed ? 'Confirmed' : 'Unconfirmed'}

                        </span>

                    </td>

                    <td class="px-4 py-3">

                        <div class="flex space-x-2">

                            <button onclick="viewUser(${user.id})" class="text-blue-600 hover:text-blue-800 text-sm">👁️ View</button>

                            <button onclick="deleteUser(${user.id}, '${user.email}')" class="text-red-600 hover:text-red-800 text-sm">🗑️ Delete</button>

                        </div>

                    </td>

                </tr>

            `).join('');

        }



        function updateUsersPagination(data) {

            document.getElementById('usersInfo').textContent = 

                `Showing ${((data.page - 1) * data.per_page) + 1}-${Math.min(data.page * data.per_page, data.total)} of ${data.total} users`;

            

            document.getElementById('pageInfo').textContent = `Page ${data.page} of ${data.total_pages}`;

            

            document.getElementById('prevPageBtn').disabled = data.page <= 1;

            document.getElementById('nextPageBtn').disabled = data.page >= data.total_pages;

        }



        async function viewUser(userId) {

            try {

                const response = await fetch(`/admin/users/${userId}`);

                const data = await response.json();

                

                if (data.success) {

                    showUserModal(data.user);

                }

            } catch (error) {

                console.error('User details error:', error);

                showToast('Failed to load user details', 'error');

            }

        }



        function showUserModal(user) {

            const modal = document.getElementById('userDetailModal');

            const content = document.getElementById('userDetailContent');

            

            content.innerHTML = `

                <div class="grid grid-cols-1 lg:grid-cols-2 gap-6">

                    <div>

                        <h4 class="font-semibold mb-3">📋 Basic Information</h4>

                        <div class="space-y-2 text-sm">

                            <div><strong>Email:</strong> ${user.user.email}</div>

                            <div><strong>ID:</strong> ${user.user.id}</div>

                            <div><strong>Created:</strong> ${formatDate(user.user.created_at)}</div>

                            <div><strong>Last Login:</strong> ${user.user.last_login ? formatDate(user.user.last_login) : 'Never'}</div>

                            <div><strong>Email Confirmed:</strong> ${user.user.email_confirmed ? '✅ Yes' : '❌ No'}</div>

                        </div>

                    </div>

                    

                    <div>

                        <h4 class="font-semibold mb-3">⚙️ Settings</h4>

                        <div class="space-y-2 text-sm">

                            ${Object.entries(user.settings).map(([key, value]) => 

                                `<div><strong>${key}:</strong> ${value}</div>`

                            ).join('')}

                        </div>

                    </div>

                </div>

                

                <div class="mt-6">

                    <h4 class="font-semibold mb-3">📊 Recent Activity</h4>

                    <div class="max-h-48 overflow-y-auto">

                        ${user.recent_sessions.map(session => `

                            <div class="flex justify-between py-2 border-b text-sm">

                                <span>${session.activity}</span>

                                <span class="text-gray-500">${formatDate(session.timestamp)}</span>

                            </div>

                        `).join('')}

                    </div>

                </div>

                

                <div class="mt-6">

                    <h4 class="font-semibold mb-3">🎯 Token Usage</h4>

                    <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">

                        ${user.token_usage.map(usage => `

                            <div class="bg-gray-50 p-3 rounded">

                                <div class="font-medium">${usage.provider}</div>

                                <div class="text-sm text-gray-600">

                                    Input: ${usage.input_tokens.toLocaleString()}<br>

                                    Output: ${usage.output_tokens.toLocaleString()}<br>

                                    Calls: ${usage.calls}

                                </div>

                            </div>

                        `).join('')}

                    </div>

                </div>

            `;

            

            modal.classList.remove('hidden');

        }



        function closeUserModal() {

            document.getElementById('userDetailModal').classList.add('hidden');

        }



        async function deleteUser(userId, email) {

            if (!confirm(`Are you sure you want to delete user "${email}" and all their data? This action cannot be undone.`)) {

                return;

            }

            

            try {

                const response = await fetch(`/admin/users/${userId}`, {

                    method: 'DELETE'

                });

                

                const data = await response.json();

                

                if (data.success) {

                    showToast('User deleted successfully', 'success');

                    loadUsers(); // Refresh the table

                } else {

                    showToast('Failed to delete user', 'error');

                }

            } catch (error) {

                console.error('Delete user error:', error);

                showToast('Failed to delete user', 'error');

            }

        }



        async function loadDatabaseSchema() {

            try {

                const response = await fetch('/admin/database/schema');

                const data = await response.json();

                

                if (data.success) {

                    updateDatabaseSchema(data.schema);

                }

            } catch (error) {

                console.error('Schema loading error:', error);

                showToast('Failed to load database schema', 'error');

            }

        }



        function updateDatabaseSchema(schema) {

            const container = document.getElementById('databaseSchema');

            

            container.innerHTML = Object.entries(schema).map(([tableName, tableInfo]) => `

                <div class="border rounded-lg p-4">

                    <div class="flex justify-between items-center mb-3">

                        <h5 class="font-semibold text-lg">${tableName}</h5>

                        <span class="bg-blue-100 text-blue-800 px-2 py-1 rounded text-sm">

                            ${tableInfo.row_count} rows

                        </span>

                    </div>

                    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-2 text-sm">

                        ${tableInfo.columns.map(col => `

                            <div class="flex items-center space-x-2">

                                <span class="font-medium">${col.name}</span>

                                <span class="text-gray-500">${col.type}</span>

                                ${col.primary_key ? '<span class="bg-yellow-100 text-yellow-800 px-1 rounded text-xs">PK</span>' : ''}

                                ${col.not_null ? '<span class="bg-red-100 text-red-800 px-1 rounded text-xs">NOT NULL</span>' : ''}

                            </div>

                        `).join('')}

                    </div>

                </div>

            `).join('');

        }



        async function loadTokenUsage() {

            try {

                // For now, create sample charts with existing data

                await createTokenUsageCharts();

            } catch (error) {

                console.error('Token usage loading error:', error);

                showToast('Failed to load token usage data', 'error');

            }

        }



        async function createTokenUsageCharts() {

            // Provider Usage Chart

            const providerCtx = document.getElementById('providerUsageChart').getContext('2d');

            

            new Chart(providerCtx, {

                type: 'bar',

                data: {

                    labels: ['Groq', 'Gemini'],

                    datasets: [{

                        label: 'Input Tokens',

                        data: [150000, 85000],

                        backgroundColor: 'rgba(59, 130, 246, 0.8)',

                        borderColor: 'rgba(59, 130, 246, 1)',

                        borderWidth: 1

                    }, {

                        label: 'Output Tokens',

                        data: [45000, 28000],

                        backgroundColor: 'rgba(147, 51, 234, 0.8)',

                        borderColor: 'rgba(147, 51, 234, 1)',

                        borderWidth: 1

                    }]

                },

                options: {

                    responsive: true,

                    plugins: {

                        title: {

                            display: true,

                            text: 'Token Usage by Provider'

                        }

                    },

                    scales: {

                        y: {

                            beginAtZero: true,

                            title: {

                                display: true,

                                text: 'Tokens'

                            }

                        }

                    }

                }

            });



            // Cost Breakdown Chart

            const costCtx = document.getElementById('costBreakdownChart').getContext('2d');

            

            new Chart(costCtx, {

                type: 'pie',

                data: {

                    labels: ['Conversation', 'Content Analysis', 'Recommendations', 'Study Planning'],

                    datasets: [{

                        data: [40, 25, 20, 15],

                        backgroundColor: [

                            'rgba(34, 197, 94, 0.8)',

                            'rgba(59, 130, 246, 0.8)',

                            'rgba(147, 51, 234, 0.8)',

                            'rgba(251, 146, 60, 0.8)'

                        ],

                        borderColor: [

                            'rgba(34, 197, 94, 1)',

                            'rgba(59, 130, 246, 1)',

                            'rgba(147, 51, 234, 1)',

                            'rgba(251, 146, 60, 1)'

                        ],

                        borderWidth: 2

                    }]

                },

                options: {

                    responsive: true,

                    plugins: {

                        title: {

                            display: true,

                            text: 'Cost Distribution by Operation Type'

                        },

                        legend: {

                            position: 'bottom'

                        }

                    }

                }

            });

        }



        function refreshUsers() {

            currentPage = 1;

            loadUsers();

        }



        function previousPage() {

            if (currentPage > 1) {

                currentPage--;

                loadUsers();

            }

        }



        function nextPage() {

            if (usersData && currentPage < usersData.total_pages) {

                currentPage++;

                loadUsers();

            }

        }



        function createCharts(stats) {

            createUserGrowthChart(stats);

            createTokenCostChart(stats);

        }



        function createUserGrowthChart(stats) {

            const ctx = document.getElementById('userGrowthChart').getContext('2d');

            

            // Generate sample data for last 30 days

            const dates = [];

            const userData = [];

            const today = new Date();

            

            for (let i = 29; i >= 0; i--) {

                const date = new Date(today);

                date.setDate(date.getDate() - i);

                dates.push(date.toLocaleDateString());

                

                // Simulate growth data (would come from real analytics)

                userData.push(Math.max(0, stats.users?.total - Math.floor(Math.random() * i * 2)));

            }

            

            new Chart(ctx, {

                type: 'line',

                data: {

                    labels: dates,

                    datasets: [{

                        label: 'Total Users',

                        data: userData,

                        borderColor: 'rgb(59, 130, 246)',

                        backgroundColor: 'rgba(59, 130, 246, 0.1)',

                        fill: true,

                        tension: 0.4

                    }]

                },

                options: {

                    responsive: true,

                    plugins: {

                        title: {

                            display: true,

                            text: 'User Growth Over Time'

                        }

                    },

                    interaction: {

                        intersect: false,

                    },

                    scales: {

                        x: {

                            display: true,

                            title: {

                                display: true,

                                text: 'Date'

                            }

                        },

                        y: {

                            display: true,

                            title: {

                                display: true,

                                text: 'Users'

                            }

                        }

                    }

                }

            });

        }



        function createTokenCostChart(stats) {

            const ctx = document.getElementById('tokenCostChart').getContext('2d');

            

            // Sample cost data

            const providers = ['Groq', 'Gemini'];

            const costs = [

                (stats.api_usage?.estimated_cost || 0) * 0.6, // Groq portion

                (stats.api_usage?.estimated_cost || 0) * 0.4  // Gemini portion

            ];

            

            new Chart(ctx, {

                type: 'doughnut',

                data: {

                    labels: providers,

                    datasets: [{

                        label: 'Cost ($)',

                        data: costs,

                        backgroundColor: [

                            'rgba(59, 130, 246, 0.8)',

                            'rgba(147, 51, 234, 0.8)'

                        ],

                        borderColor: [

                            'rgba(59, 130, 246, 1)',

                            'rgba(147, 51, 234, 1)'

                        ],

                        borderWidth: 2

                    }]

                },

                options: {

                    responsive: true,

                    plugins: {

                        title: {

                            display: true,

                            text: 'API Costs by Provider'

                        },

                        legend: {

                            position: 'bottom',

                        }

                    }

                }

            });

        }



        function exportUsers() {

            window.open('/admin/export/users', '_blank');

            showToast('Users data export started', 'success');

        }



        function exportTokens() {

            window.open('/admin/export/tokens', '_blank');

            showToast('Token usage data export started', 'success');

        }



        async function loadSystemHealth() {

            try {

                // Load system health metrics

                const healthResponse = await fetch('/admin/system/health');

                const healthData = await healthResponse.json();

                

                if (healthData.success) {

                    updateSystemMetrics(healthData.health);

                }

                

                // Load system alerts

                const alertsResponse = await fetch('/admin/system/alerts');

                const alertsData = await alertsResponse.json();

                

                if (alertsData.success) {

                    updateSystemAlerts(alertsData.alerts);

                }

            } catch (error) {

                console.error('System health loading error:', error);

                showToast('Failed to load system health data', 'error');

            }

        }



        function updateSystemMetrics(health) {

            // Memory metrics

            if (health.memory) {

                const memoryPercent = health.memory.percent || 0;

                const memoryUsed = Math.round(health.memory.used / 1024 / 1024 / 1024 * 100) / 100;

                const memoryTotal = Math.round(health.memory.total / 1024 / 1024 / 1024 * 100) / 100;

                

                document.getElementById('memoryMetrics').innerHTML = `

                    <div class="space-y-2">

                        <div class="flex justify-between">

                            <span>Used:</span>

                            <span>${memoryUsed}GB / ${memoryTotal}GB</span>

                        </div>

                        <div class="w-full bg-gray-200 rounded-full h-2">

                            <div class="bg-blue-600 h-2 rounded-full" style="width: ${memoryPercent}%"></div>

                        </div>

                        <div class="text-xs text-gray-500">${memoryPercent.toFixed(1)}% used</div>

                    </div>

                `;

            }

            

            // Disk metrics

            if (health.disk) {

                const diskPercent = health.disk.percent || 0;

                const diskUsed = Math.round(health.disk.used / 1024 / 1024 / 1024 * 100) / 100;

                const diskTotal = Math.round(health.disk.total / 1024 / 1024 / 1024 * 100) / 100;

                

                document.getElementById('diskMetrics').innerHTML = `

                    <div class="space-y-2">

                        <div class="flex justify-between">

                            <span>Used:</span>

                            <span>${diskUsed}GB / ${diskTotal}GB</span>

                        </div>

                        <div class="w-full bg-gray-200 rounded-full h-2">

                            <div class="bg-green-600 h-2 rounded-full" style="width: ${diskPercent}%"></div>

                        </div>

                        <div class="text-xs text-gray-500">${diskPercent.toFixed(1)}% used</div>

                    </div>

                `;

            }

            

            // Database metrics

            if (health.database) {

                document.getElementById('databaseMetrics').innerHTML = `

                    <div class="space-y-2">

                        <div class="flex justify-between">

                            <span>Size:</span>

                            <span>${health.database.size_mb}MB</span>

                        </div>

                        <div class="flex justify-between">

                            <span>Uptime:</span>

                            <span>${health.uptime || 'Unknown'}</span>

                        </div>

                    </div>

                `;

            }

            

            // Error logs

            if (health.recent_errors && health.recent_errors.length > 0) {

                document.getElementById('errorLogs').innerHTML = `

                    <div class="space-y-2 max-h-64 overflow-y-auto">

                        ${health.recent_errors.map(error => `

                            <div class="p-2 bg-red-50 border border-red-200 rounded text-sm">

                                <div class="flex justify-between items-start">

                                    <span class="font-medium text-red-800">${error.level}</span>

                                    <span class="text-red-600 text-xs">${error.timestamp}</span>

                                </div>

                                <div class="text-red-700 mt-1">${error.message}</div>

                                <div class="text-red-600 text-xs mt-1">Module: ${error.module}</div>

                            </div>

                        `).join('')}

                    </div>

                `;

            } else {

                document.getElementById('errorLogs').innerHTML = '<div class="text-center text-gray-500 py-4">No recent errors</div>';

            }

        }



        function updateSystemAlerts(alerts) {

            const container = document.getElementById('systemAlerts');

            

            if (alerts.length === 0) {

                container.innerHTML = '<div class="text-center text-green-600 py-4">✅ All systems normal</div>';

                return;

            }

            

            container.innerHTML = alerts.map(alert => {

                const bgColor = alert.type === 'error' ? 'bg-red-50 border-red-200' : 

                               alert.type === 'warning' ? 'bg-yellow-50 border-yellow-200' : 

                               'bg-blue-50 border-blue-200';

                const textColor = alert.type === 'error' ? 'text-red-800' : 

                                 alert.type === 'warning' ? 'text-yellow-800' : 

                                 'text-blue-800';

                const icon = alert.type === 'error' ? '🚨' : 

                            alert.type === 'warning' ? '⚠️' : 'ℹ️';

                

                return `

                    <div class="p-3 ${bgColor} border rounded-lg">

                        <div class="flex items-start gap-3">

                            <span class="text-lg">${icon}</span>

                            <div class="flex-1">

                                <div class="font-medium ${textColor}">${alert.message}</div>

                                <div class="text-sm ${textColor} opacity-75 mt-1">Action: ${alert.action}</div>

                            </div>

                        </div>

                    </div>

                `;

            }).join('');

        }



        function formatDate(dateString) {

            if (!dateString) return 'Never';

            return new Date(dateString).toLocaleDateString() + ' ' + new Date(dateString).toLocaleTimeString();

        }



        function showToast(message, type = 'info') {

            const toast = document.createElement('div');

            toast.className = `fixed top-4 right-4 p-4 rounded-lg shadow-md z-50 ${

                type === 'success' ? 'bg-green-500' : 

                type === 'error' ? 'bg-red-500' : 

                type === 'warning' ? 'bg-yellow-500' : 'bg-blue-500'

            } text-white`;

            

            toast.textContent = message;

            document.body.appendChild(toast);

            

            setTimeout(() => {

                toast.remove();

            }, 5000);

        }



        // Add CSS for tab styling

        const style = document.createElement('style');

        style.textContent = `

            .admin-tab {

                padding: 0.5rem 1rem;

                border-bottom: 2px solid transparent;

                font-medium: 500;

                text-decoration: none;

                transition: all 0.2s;

            }

            .admin-tab:hover {

                text-decoration: none;

                border-bottom-color: #d1d5db;

            }

            .admin-tab.active {

                border-bottom-color: #3b82f6;

                color: #3b82f6;

            }

        `;

        document.head.appendChild(style);

    </script>
</body>
</html>