{% extends "base.html" %}

{% block title %}System Administration{% endblock %}

{% block content %}
<div class="container-fluid">
    <div class="row">
        <div class="col-12">
            <div class="d-flex justify-content-between align-items-center mb-4">
                <h1><i class="fas fa-cogs"></i> System Administration</h1>
                <div class="btn-group" role="group">
                    <button type="button" class="btn btn-outline-info" onclick="refreshDashboard()">
                        <i class="fas fa-sync-alt"></i> Refresh
                    </button>
                    <button type="button" class="btn btn-outline-success" onclick="createBackup()">
                        <i class="fas fa-download"></i> Create Backup
                    </button>
                </div>
            </div>
        </div>
    </div>

    <!-- System Health Cards -->
    <div class="row mb-4">
        <div class="col-md-3">
            <div class="card border-primary">
                <div class="card-body text-center">
                    <div id="system-status" class="display-6 mb-2">
                        <i class="fas fa-circle text-success"></i>
                    </div>
                    <h6 class="card-title">System Status</h6>
                    <p class="card-text small" id="system-status-text">Healthy</p>
                </div>
            </div>
        </div>
        <div class="col-md-3">
            <div class="card border-info">
                <div class="card-body text-center">
                    <div class="display-6 mb-2">
                        <i class="fas fa-users"></i>
                    </div>
                    <h6 class="card-title">Total Users</h6>
                    <p class="card-text h4" id="total-users">0</p>
                </div>
            </div>
        </div>
        <div class="col-md-3">
            <div class="card border-warning">
                <div class="card-body text-center">
                    <div class="display-6 mb-2">
                        <i class="fas fa-database"></i>
                    </div>
                    <h6 class="card-title">Database Size</h6>
                    <p class="card-text h6" id="db-size">0 MB</p>
                </div>
            </div>
        </div>
        <div class="col-md-3">
            <div class="card border-success">
                <div class="card-body text-center">
                    <div class="display-6 mb-2">
                        <i class="fas fa-clock"></i>
                    </div>
                    <h6 class="card-title">System Uptime</h6>
                    <p class="card-text small" id="system-uptime">Unknown</p>
                </div>
            </div>
        </div>
    </div>

    <!-- Main Navigation Tabs -->
    <ul class="nav nav-tabs mb-4" id="adminTabs" role="tablist">
        <li class="nav-item" role="presentation">
            <button class="nav-link active" id="overview-tab" data-bs-toggle="tab" data-bs-target="#overview" 
                type="button" role="tab">
                <i class="fas fa-tachometer-alt"></i> Overview
            </button>
        </li>
        <li class="nav-item" role="presentation">
            <button class="nav-link" id="users-tab" data-bs-toggle="tab" data-bs-target="#users" 
                type="button" role="tab">
                <i class="fas fa-users"></i> User Management
            </button>
        </li>
        <li class="nav-item" role="presentation">
            <button class="nav-link" id="settings-tab" data-bs-toggle="tab" data-bs-target="#settings" 
                type="button" role="tab">
                <i class="fas fa-sliders-h"></i> System Settings
            </button>
        </li>
        <li class="nav-item" role="presentation">
            <button class="nav-link" id="maintenance-tab" data-bs-toggle="tab" data-bs-target="#maintenance" 
                type="button" role="tab">
                <i class="fas fa-tools"></i> Maintenance
            </button>
        </li>
        <li class="nav-item" role="presentation">
            <button class="nav-link" id="backup-tab" data-bs-toggle="tab" data-bs-target="#backup" 
                type="button" role="tab">
                <i class="fas fa-hdd"></i> Backup & Restore
            </button>
        </li>
    </ul>

    <!-- Tab Content -->
    <div class="tab-content" id="adminTabContent">
        <!-- Overview Tab -->
        <div class="tab-pane fade show active" id="overview" role="tabpanel">
            <div class="row">
                <div class="col-md-8">
                    <div class="card">
                        <div class="card-header">
                            <h5 class="mb-0"><i class="fas fa-chart-bar"></i> System Statistics</h5>
                        </div>
                        <div class="card-body">
                            <div class="row">
                                <div class="col-sm-6 mb-3">
                                    <strong>Total Customers:</strong>
                                    <span id="stat-customers" class="float-end">0</span>
                                </div>
                                <div class="col-sm-6 mb-3">
                                    <strong>Total Files:</strong>
                                    <span id="stat-files" class="float-end">0</span>
                                </div>
                                <div class="col-sm-6 mb-3">
                                    <strong>Total Transactions:</strong>
                                    <span id="stat-transactions" class="float-end">0</span>
                                </div>
                                <div class="col-sm-6 mb-3">
                                    <strong>Total QDROs:</strong>
                                    <span id="stat-qdros" class="float-end">0</span>
                                </div>
                                <div class="col-sm-6 mb-3">
                                    <strong>Active Users:</strong>
                                    <span id="stat-active-users" class="float-end">0</span>
                                </div>
                                <div class="col-sm-6 mb-3">
                                    <strong>Admin Users:</strong>
                                    <span id="stat-admins" class="float-end">0</span>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="col-md-4">
                    <div class="card">
                        <div class="card-header">
                            <h5 class="mb-0"><i class="fas fa-exclamation-triangle"></i> System Alerts</h5>
                        </div>
                        <div class="card-body">
                            <div id="system-alerts">
                                <p class="text-muted">No alerts</p>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <div class="row mt-4">
                <div class="col-12">
                    <div class="card">
                        <div class="card-header">
                            <h5 class="mb-0"><i class="fas fa-history"></i> Recent Activity</h5>
                        </div>
                        <div class="card-body">
                            <div id="recent-activity">
                                <p class="text-muted">Loading recent activity...</p>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Users Tab -->
        <div class="tab-pane fade" id="users" role="tabpanel">
            <div class="card">
                <div class="card-header d-flex justify-content-between align-items-center">
                    <h5 class="mb-0"><i class="fas fa-users"></i> User Management</h5>
                    <button type="button" class="btn btn-primary btn-sm" onclick="showCreateUserModal()">
                        <i class="fas fa-plus"></i> Add User
                    </button>
                </div>
                <div class="card-body">
                    <div class="row mb-3">
                        <div class="col-md-6">
                            <input type="text" class="form-control" id="user-search" 
                                placeholder="Search users..." onkeyup="searchUsers()">
                        </div>
                        <div class="col-md-3">
                            <select class="form-select" id="user-filter" onchange="filterUsers()">
                                <option value="all">All Users</option>
                                <option value="active">Active Only</option>
                                <option value="admin">Admins Only</option>
                            </select>
                        </div>
                        <div class="col-md-3">
                            <button type="button" class="btn btn-outline-secondary" onclick="loadUsers()">
                                <i class="fas fa-sync"></i> Refresh
                            </button>
                        </div>
                    </div>

                    <div class="table-responsive">
                        <table class="table table-striped table-hover">
                            <thead class="table-dark">
                                <tr>
                                    <th>Username</th>
                                    <th>Email</th>
                                    <th>Name</th>
                                    <th>Status</th>
                                    <th>Role</th>
                                    <th>Last Login</th>
                                    <th>Actions</th>
                                </tr>
                            </thead>
                            <tbody id="users-table-body">
                                <tr>
                                    <td colspan="7" class="text-center">Loading users...</td>
                                </tr>
                            </tbody>
                        </table>
                    </div>

                    <nav>
                        <ul class="pagination justify-content-center" id="users-pagination">
                        </ul>
                    </nav>
                </div>
            </div>
        </div>

        <!-- Settings Tab -->
        <div class="tab-pane fade" id="settings" role="tabpanel">
            <div class="card">
                <div class="card-header d-flex justify-content-between align-items-center">
                    <h5 class="mb-0"><i class="fas fa-sliders-h"></i> System Settings</h5>
                    <button type="button" class="btn btn-primary btn-sm" onclick="showCreateSettingModal()">
                        <i class="fas fa-plus"></i> Add Setting
                    </button>
                </div>
                <div class="card-body">
                    <div class="table-responsive">
                        <table class="table table-striped">
                            <thead class="table-dark">
                                <tr>
                                    <th>Setting Key</th>
                                    <th>Value</th>
                                    <th>Type</th>
                                    <th>Description</th>
                                    <th>Actions</th>
                                </tr>
                            </thead>
                            <tbody id="settings-table-body">
                                <tr>
                                    <td colspan="5" class="text-center">Loading settings...</td>
                                </tr>
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>

        <!-- Maintenance Tab -->
        <div class="tab-pane fade" id="maintenance" role="tabpanel">
            <div class="row">
                <div class="col-md-6">
                    <div class="card">
                        <div class="card-header">
                            <h5 class="mb-0"><i class="fas fa-database"></i> Database Maintenance</h5>
                        </div>
                        <div class="card-body">
                            <p class="card-text">Optimize database performance and clean up data.</p>
                            <div class="d-grid gap-2">
                                <button type="button" class="btn btn-warning" onclick="vacuumDatabase()">
                                    <i class="fas fa-compress-alt"></i> Vacuum Database
                                </button>
                                <button type="button" class="btn btn-info" onclick="analyzeDatabase()">
                                    <i class="fas fa-chart-line"></i> Analyze Statistics
                                </button>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="col-md-6">
                    <div class="card">
                        <div class="card-header">
                            <h5 class="mb-0"><i class="fas fa-table"></i> Lookup Tables</h5>
                        </div>
                        <div class="card-body">
                            <div id="lookup-tables">
                                <p class="text-muted">Loading lookup table information...</p>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <div class="row mt-4">
                <div class="col-12">
                    <div class="card">
                        <div class="card-header">
                            <h5 class="mb-0"><i class="fas fa-history"></i> Maintenance Log</h5>
                        </div>
                        <div class="card-body">
                            <div id="maintenance-log">
                                <p class="text-muted">No maintenance operations performed yet.</p>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Backup Tab -->
        <div class="tab-pane fade" id="backup" role="tabpanel">
            <div class="row">
                <div class="col-md-6">
                    <div class="card">
                        <div class="card-header">
                            <h5 class="mb-0"><i class="fas fa-download"></i> Create Backup</h5>
                        </div>
                        <div class="card-body">
                            <p class="card-text">Create a manual backup of the database.</p>
                            <button type="button" class="btn btn-success btn-lg w-100" onclick="createBackup()">
                                <i class="fas fa-download"></i> Create Backup Now
                            </button>
                        </div>
                    </div>
                </div>
                <div class="col-md-6">
                    <div class="card">
                        <div class="card-header">
                            <h5 class="mb-0"><i class="fas fa-info-circle"></i> Backup Information</h5>
                        </div>
                        <div class="card-body">
                            <p><strong>Last Backup:</strong> <span id="last-backup">Unknown</span></p>
                            <p><strong>Backup Location:</strong> ./backups/</p>
                            <p><strong>Retention:</strong> 10 most recent backups</p>
                        </div>
                    </div>
                </div>
            </div>

            <div class="row mt-4">
                <div class="col-12">
                    <div class="card">
                        <div class="card-header">
                            <h5 class="mb-0"><i class="fas fa-list"></i> Available Backups</h5>
                        </div>
                        <div class="card-body">
                            <div class="table-responsive">
                                <table class="table table-striped">
                                    <thead class="table-dark">
                                        <tr>
                                            <th>Filename</th>
                                            <th>Size</th>
                                            <th>Created</th>
                                            <th>Type</th>
                                            <th>Actions</th>
                                        </tr>
                                    </thead>
                                    <tbody id="backup-list">
                                        <tr>
                                            <td colspan="5" class="text-center">Loading backups...</td>
                                        </tr>
                                    </tbody>
                                </table>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<!-- User Management Modal -->
<div class="modal fade" id="userModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="userModalTitle">Add User</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <form id="userForm">
                    <input type="hidden" id="userId">
                    <div class="row">
                        <div class="col-md-6 mb-3">
                            <label for="username" class="form-label">Username *</label>
                            <input type="text" class="form-control" id="username" required>
                        </div>
                        <div class="col-md-6 mb-3">
                            <label for="email" class="form-label">Email *</label>
                            <input type="email" class="form-control" id="email" required>
                        </div>
                    </div>
                    <div class="row">
                        <div class="col-md-6 mb-3">
                            <label for="firstName" class="form-label">First Name</label>
                            <input type="text" class="form-control" id="firstName">
                        </div>
                        <div class="col-md-6 mb-3">
                            <label for="lastName" class="form-label">Last Name</label>
                            <input type="text" class="form-control" id="lastName">
                        </div>
                    </div>
                    <div class="mb-3" id="passwordFields">
                        <label for="password" class="form-label">Password *</label>
                        <input type="password" class="form-control" id="password" required>
                    </div>
                    <div class="row">
                        <div class="col-md-6">
                            <div class="form-check">
                                <input class="form-check-input" type="checkbox" id="isAdmin">
                                <label class="form-check-label" for="isAdmin">
                                    Administrator
                                </label>
                            </div>
                        </div>
                        <div class="col-md-6">
                            <div class="form-check">
                                <input class="form-check-input" type="checkbox" id="isActive" checked>
                                <label class="form-check-label" for="isActive">
                                    Active
                                </label>
                            </div>
                        </div>
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
                <button type="button" class="btn btn-primary" onclick="saveUser()">Save</button>
            </div>
        </div>
    </div>
</div>

<!-- Settings Modal -->
<div class="modal fade" id="settingModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="settingModalTitle">Add Setting</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <form id="settingForm">
                    <div class="mb-3">
                        <label for="settingKey" class="form-label">Setting Key *</label>
                        <input type="text" class="form-control" id="settingKey" required>
                    </div>
                    <div class="mb-3">
                        <label for="settingValue" class="form-label">Setting Value *</label>
                        <input type="text" class="form-control" id="settingValue" required>
                    </div>
                    <div class="mb-3">
                        <label for="settingType" class="form-label">Setting Type</label>
                        <select class="form-select" id="settingType">
                            <option value="STRING">String</option>
                            <option value="INTEGER">Integer</option>
                            <option value="FLOAT">Float</option>
                            <option value="BOOLEAN">Boolean</option>
                        </select>
                    </div>
                    <div class="mb-3">
                        <label for="settingDescription" class="form-label">Description</label>
                        <textarea class="form-control" id="settingDescription" rows="3"></textarea>
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
                <button type="button" class="btn btn-primary" onclick="saveSetting()">Save</button>
            </div>
        </div>
    </div>
</div>

<!-- Password Reset Modal -->
<div class="modal fade" id="passwordModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Reset Password</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <form id="passwordForm">
                    <input type="hidden" id="resetUserId">
                    <div class="mb-3">
                        <label for="newPassword" class="form-label">New Password *</label>
                        <input type="password" class="form-control" id="newPassword" required>
                    </div>
                    <div class="mb-3">
                        <label for="confirmPassword" class="form-label">Confirm Password *</label>
                        <input type="password" class="form-control" id="confirmPassword" required>
                    </div>
                </form>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
                <button type="button" class="btn btn-primary" onclick="resetPassword()">Reset Password</button>
            </div>
        </div>
    </div>
</div>

<script>
// Global variables
let currentUsers = [];
let currentSettings = [];
let userPagination = { page: 1, limit: 10 };

// Initialize admin dashboard
document.addEventListener('DOMContentLoaded', function() {
    loadSystemHealth();
    loadSystemStats();
    loadUsers();
    loadSettings();
    loadLookupTables();
    loadBackups();
    
    // Auto-refresh every 5 minutes
    setInterval(loadSystemHealth, 300000);
});

// System Health Functions
async function loadSystemHealth() {
    try {
        const response = await fetch('/api/admin/health');
        const data = await response.json();
        
        // Update status indicator
        const statusElement = document.getElementById('system-status');
        const statusTextElement = document.getElementById('system-status-text');
        
        if (data.status === 'healthy') {
            statusElement.innerHTML = '<i class="fas fa-circle text-success"></i>';
            statusTextElement.textContent = 'Healthy';
        } else {
            statusElement.innerHTML = '<i class="fas fa-circle text-danger"></i>';
            statusTextElement.textContent = 'Unhealthy';
        }
        
        // Update system info
        document.getElementById('system-uptime').textContent = data.uptime;
        
        // Update alerts
        const alertsElement = document.getElementById('system-alerts');
        if (data.alerts && data.alerts.length > 0) {
            alertsElement.innerHTML = data.alerts.map(alert => 
                '<div class="alert alert-warning alert-sm mb-1">' + alert + '</div>'
            ).join('');
        } else {
            alertsElement.innerHTML = '<p class="text-muted">No alerts</p>';
        }
        
    } catch (error) {
        console.error('Failed to load system health:', error);
        showAlert('Failed to load system health', 'error');
    }
}

async function loadSystemStats() {
    try {
        const response = await fetch('/api/admin/stats');
        const data = await response.json();
        
        // Update dashboard cards
        document.getElementById('total-users').textContent = data.total_users;
        document.getElementById('db-size').textContent = data.database_size;
        
        // Update detailed stats
        document.getElementById('stat-customers').textContent = data.total_customers.toLocaleString();
        document.getElementById('stat-files').textContent = data.total_files.toLocaleString();
        document.getElementById('stat-transactions').textContent = data.total_transactions.toLocaleString();
        document.getElementById('stat-qdros').textContent = data.total_qdros.toLocaleString();
        document.getElementById('stat-active-users').textContent = data.total_active_users;
        document.getElementById('stat-admins').textContent = data.total_admins;
        
        // Update recent activity
        const activityElement = document.getElementById('recent-activity');
        if (data.recent_activity && data.recent_activity.length > 0) {
            activityElement.innerHTML = data.recent_activity.map(activity => 
                '<div class="border-bottom pb-2 mb-2">' +
                '<small class="text-muted">' + (activity.timestamp ? new Date(activity.timestamp).toLocaleString() : 'Recent') + '</small><br>' +
                activity.description +
                '</div>'
            ).join('');
        } else {
            activityElement.innerHTML = '<p class="text-muted">No recent activity</p>';
        }
        
    } catch (error) {
        console.error('Failed to load system stats:', error);
        showAlert('Failed to load system statistics', 'error');
    }
}

// User Management Functions
async function loadUsers() {
    try {
        const search = document.getElementById('user-search').value;
        const filter = document.getElementById('user-filter').value;
        
        let url = '/api/admin/users?';
        if (search) url += 'search=' + encodeURIComponent(search) + '&';
        if (filter === 'active') url += 'active_only=true&';
        
        const response = await fetch(url);
        const users = await response.json();
        currentUsers = users;
        
        renderUsersTable(users);
        
    } catch (error) {
        console.error('Failed to load users:', error);
        showAlert('Failed to load users', 'error');
    }
}

function renderUsersTable(users) {
    const tbody = document.getElementById('users-table-body');
    
    if (users.length === 0) {
        tbody.innerHTML = '<tr><td colspan="7" class="text-center">No users found</td></tr>';
        return;
    }
    
    tbody.innerHTML = users.map(user => `
        <tr>
            <td>${user.username}</td>
            <td>${user.email}</td>
            <td>${(user.first_name || '') + ' ' + (user.last_name || '')}</td>
            <td>
                <span class="badge ${user.is_active ? 'bg-success' : 'bg-secondary'}">
                    ${user.is_active ? 'Active' : 'Inactive'}
                </span>
            </td>
            <td>
                <span class="badge ${user.is_admin ? 'bg-primary' : 'bg-secondary'}">
                    ${user.is_admin ? 'Admin' : 'User'}
                </span>
            </td>
            <td>${user.last_login ? new Date(user.last_login).toLocaleDateString() : 'Never'}</td>
            <td>
                <div class="btn-group btn-group-sm">
                    <button class="btn btn-outline-primary" onclick="editUser(${user.id})" title="Edit">
                        <i class="fas fa-edit"></i>
                    </button>
                    <button class="btn btn-outline-warning" onclick="showPasswordModal(${user.id})" title="Reset Password">
                        <i class="fas fa-key"></i>
                    </button>
                    <button class="btn btn-outline-danger" onclick="deactivateUser(${user.id})" title="Deactivate">
                        <i class="fas fa-user-times"></i>
                    </button>
                </div>
            </td>
        </tr>
    `).join('');
}

function showCreateUserModal() {
    document.getElementById('userModalTitle').textContent = 'Add User';
    document.getElementById('userForm').reset();
    document.getElementById('userId').value = '';
    document.getElementById('passwordFields').style.display = 'block';
    document.getElementById('isActive').checked = true;
    new bootstrap.Modal(document.getElementById('userModal')).show();
}

async function editUser(userId) {
    try {
        const response = await fetch('/api/admin/users/' + userId);
        const user = await response.json();
        
        document.getElementById('userModalTitle').textContent = 'Edit User';
        document.getElementById('userId').value = user.id;
        document.getElementById('username').value = user.username;
        document.getElementById('email').value = user.email;
        document.getElementById('firstName').value = user.first_name || '';
        document.getElementById('lastName').value = user.last_name || '';
        document.getElementById('isAdmin').checked = user.is_admin;
        document.getElementById('isActive').checked = user.is_active;
        document.getElementById('passwordFields').style.display = 'none';
        
        new bootstrap.Modal(document.getElementById('userModal')).show();
        
    } catch (error) {
        console.error('Failed to load user:', error);
        showAlert('Failed to load user details', 'error');
    }
}

async function saveUser() {
    const userId = document.getElementById('userId').value;
    const isEdit = !!userId;
    
    const userData = {
        username: document.getElementById('username').value,
        email: document.getElementById('email').value,
        first_name: document.getElementById('firstName').value,
        last_name: document.getElementById('lastName').value,
        is_admin: document.getElementById('isAdmin').checked,
        is_active: document.getElementById('isActive').checked
    };
    
    if (!isEdit) {
        userData.password = document.getElementById('password').value;
    }
    
    try {
        const url = isEdit ? '/api/admin/users/' + userId : '/api/admin/users';
        const method = isEdit ? 'PUT' : 'POST';
        
        const response = await fetch(url, {
            method: method,
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(userData)
        });
        
        if (response.ok) {
            bootstrap.Modal.getInstance(document.getElementById('userModal')).hide();
            showAlert(isEdit ? 'User updated successfully' : 'User created successfully', 'success');
            loadUsers();
        } else {
            const error = await response.json();
            showAlert(error.detail || 'Failed to save user', 'error');
        }
        
    } catch (error) {
        console.error('Failed to save user:', error);
        showAlert('Failed to save user', 'error');
    }
}

function showPasswordModal(userId) {
    document.getElementById('resetUserId').value = userId;
    document.getElementById('passwordForm').reset();
    new bootstrap.Modal(document.getElementById('passwordModal')).show();
}

async function resetPassword() {
    const userId = document.getElementById('resetUserId').value;
    const newPassword = document.getElementById('newPassword').value;
    const confirmPassword = document.getElementById('confirmPassword').value;
    
    if (newPassword !== confirmPassword) {
        showAlert('Passwords do not match', 'error');
        return;
    }
    
    try {
        const response = await fetch('/api/admin/users/' + userId + '/reset-password', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify({
                new_password: newPassword,
                confirm_password: confirmPassword
            })
        });
        
        if (response.ok) {
            bootstrap.Modal.getInstance(document.getElementById('passwordModal')).hide();
            showAlert('Password reset successfully', 'success');
        } else {
            const error = await response.json();
            showAlert(error.detail || 'Failed to reset password', 'error');
        }
        
    } catch (error) {
        console.error('Failed to reset password:', error);
        showAlert('Failed to reset password', 'error');
    }
}

async function deactivateUser(userId) {
    if (!confirm('Are you sure you want to deactivate this user?')) return;
    
    try {
        const response = await fetch('/api/admin/users/' + userId, {
            method: 'DELETE'
        });
        
        if (response.ok) {
            showAlert('User deactivated successfully', 'success');
            loadUsers();
        } else {
            const error = await response.json();
            showAlert(error.detail || 'Failed to deactivate user', 'error');
        }
        
    } catch (error) {
        console.error('Failed to deactivate user:', error);
        showAlert('Failed to deactivate user', 'error');
    }
}

// Settings Management Functions
async function loadSettings() {
    try {
        const response = await fetch('/api/admin/settings');
        const data = await response.json();
        currentSettings = data.settings;
        
        renderSettingsTable(data.settings);
        
    } catch (error) {
        console.error('Failed to load settings:', error);
        showAlert('Failed to load settings', 'error');
    }
}

function renderSettingsTable(settings) {
    const tbody = document.getElementById('settings-table-body');
    
    if (settings.length === 0) {
        tbody.innerHTML = '<tr><td colspan="5" class="text-center">No settings found</td></tr>';
        return;
    }
    
    tbody.innerHTML = settings.map(setting => `
        <tr>
            <td><code>${setting.setting_key}</code></td>
            <td>${setting.setting_value}</td>
            <td><span class="badge bg-secondary">${setting.setting_type}</span></td>
            <td>${setting.description || '-'}</td>
            <td>
                <div class="btn-group btn-group-sm">
                    <button class="btn btn-outline-primary" onclick="editSetting('${setting.setting_key}')" title="Edit">
                        <i class="fas fa-edit"></i>
                    </button>
                    <button class="btn btn-outline-danger" onclick="deleteSetting('${setting.setting_key}')" title="Delete">
                        <i class="fas fa-trash"></i>
                    </button>
                </div>
            </td>
        </tr>
    `).join('');
}

function showCreateSettingModal() {
    document.getElementById('settingModalTitle').textContent = 'Add Setting';
    document.getElementById('settingForm').reset();
    document.getElementById('settingKey').readOnly = false;
    new bootstrap.Modal(document.getElementById('settingModal')).show();
}

async function editSetting(settingKey) {
    try {
        const response = await fetch('/api/admin/settings/' + encodeURIComponent(settingKey));
        const setting = await response.json();
        
        document.getElementById('settingModalTitle').textContent = 'Edit Setting';
        document.getElementById('settingKey').value = setting.setting_key;
        document.getElementById('settingKey').readOnly = true;
        document.getElementById('settingValue').value = setting.setting_value;
        document.getElementById('settingType').value = setting.setting_type;
        document.getElementById('settingDescription').value = setting.description || '';
        
        new bootstrap.Modal(document.getElementById('settingModal')).show();
        
    } catch (error) {
        console.error('Failed to load setting:', error);
        showAlert('Failed to load setting details', 'error');
    }
}

async function saveSetting() {
    const settingKey = document.getElementById('settingKey').value;
    const isEdit = document.getElementById('settingKey').readOnly;
    
    const settingData = {
        setting_key: settingKey,
        setting_value: document.getElementById('settingValue').value,
        setting_type: document.getElementById('settingType').value,
        description: document.getElementById('settingDescription').value
    };
    
    try {
        const url = isEdit ? '/api/admin/settings/' + encodeURIComponent(settingKey) : '/api/admin/settings';
        const method = isEdit ? 'PUT' : 'POST';
        
        const response = await fetch(url, {
            method: method,
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(isEdit ? {
                setting_value: settingData.setting_value,
                description: settingData.description
            } : settingData)
        });
        
        if (response.ok) {
            bootstrap.Modal.getInstance(document.getElementById('settingModal')).hide();
            showAlert(isEdit ? 'Setting updated successfully' : 'Setting created successfully', 'success');
            loadSettings();
        } else {
            const error = await response.json();
            showAlert(error.detail || 'Failed to save setting', 'error');
        }
        
    } catch (error) {
        console.error('Failed to save setting:', error);
        showAlert('Failed to save setting', 'error');
    }
}

async function deleteSetting(settingKey) {
    if (!confirm('Are you sure you want to delete this setting?')) return;
    
    try {
        const response = await fetch('/api/admin/settings/' + encodeURIComponent(settingKey), {
            method: 'DELETE'
        });
        
        if (response.ok) {
            showAlert('Setting deleted successfully', 'success');
            loadSettings();
        } else {
            const error = await response.json();
            showAlert(error.detail || 'Failed to delete setting', 'error');
        }
        
    } catch (error) {
        console.error('Failed to delete setting:', error);
        showAlert('Failed to delete setting', 'error');
    }
}

// Maintenance Functions
async function loadLookupTables() {
    try {
        const response = await fetch('/api/admin/lookups/tables');
        const data = await response.json();
        
        const element = document.getElementById('lookup-tables');
        element.innerHTML = data.tables.map(table => `
            <div class="d-flex justify-content-between align-items-center border-bottom pb-2 mb-2">
                <div>
                    <strong>${table.display_name}</strong><br>
                    <small class="text-muted">${table.description}</small>
                </div>
                <span class="badge bg-info">${table.record_count} records</span>
            </div>
        `).join('');
        
    } catch (error) {
        console.error('Failed to load lookup tables:', error);
        document.getElementById('lookup-tables').innerHTML = '<p class="text-danger">Failed to load lookup tables</p>';
    }
}

async function vacuumDatabase() {
    if (!confirm('This will optimize the database. Continue?')) return;
    
    try {
        const response = await fetch('/api/admin/maintenance/vacuum', { method: 'POST' });
        const result = await response.json();
        
        if (response.ok) {
            showAlert('Database vacuum completed in ' + result.duration_seconds.toFixed(2) + ' seconds', 'success');
            addMaintenanceLog('Database Vacuum', 'Completed successfully');
        } else {
            showAlert(result.detail || 'Database vacuum failed', 'error');
        }
        
    } catch (error) {
        console.error('Failed to vacuum database:', error);
        showAlert('Failed to vacuum database', 'error');
    }
}

async function analyzeDatabase() {
    if (!confirm('This will analyze database statistics. Continue?')) return;
    
    try {
        const response = await fetch('/api/admin/maintenance/analyze', { method: 'POST' });
        const result = await response.json();
        
        if (response.ok) {
            showAlert('Database analysis completed in ' + result.duration_seconds.toFixed(2) + ' seconds', 'success');
            addMaintenanceLog('Database Analysis', 'Completed successfully');
        } else {
            showAlert(result.detail || 'Database analysis failed', 'error');
        }
        
    } catch (error) {
        console.error('Failed to analyze database:', error);
        showAlert('Failed to analyze database', 'error');
    }
}

function addMaintenanceLog(operation, message) {
    const logElement = document.getElementById('maintenance-log');
    const timestamp = new Date().toLocaleString();
    const logEntry = `
        <div class="border-bottom pb-2 mb-2">
            <small class="text-muted">${timestamp}</small><br>
            <strong>${operation}:</strong> ${message}
        </div>
    `;
    
    if (logElement.innerHTML.includes('No maintenance operations')) {
        logElement.innerHTML = logEntry;
    } else {
        logElement.innerHTML = logEntry + logElement.innerHTML;
    }
}

// Backup Functions
async function loadBackups() {
    try {
        const response = await fetch('/api/admin/backup/list');
        const data = await response.json();
        
        const tbody = document.getElementById('backup-list');
        
        if (data.backups.length === 0) {
            tbody.innerHTML = '<tr><td colspan="5" class="text-center">No backups found</td></tr>';
            return;
        }
        
        tbody.innerHTML = data.backups.map(backup => `
            <tr>
                <td><code>${backup.filename}</code></td>
                <td>${backup.size}</td>
                <td>${new Date(backup.created_at).toLocaleString()}</td>
                <td><span class="badge ${backup.backup_type === 'manual' ? 'bg-primary' : 'bg-secondary'}">${backup.backup_type}</span></td>
                <td>
                    <button class="btn btn-outline-success btn-sm" onclick="downloadBackup('${backup.filename}')" title="Download">
                        <i class="fas fa-download"></i>
                    </button>
                </td>
            </tr>
        `).join('');
        
        // Update last backup info
        if (data.backups.length > 0) {
            document.getElementById('last-backup').textContent = new Date(data.backups[0].created_at).toLocaleString();
        }
        
    } catch (error) {
        console.error('Failed to load backups:', error);
        document.getElementById('backup-list').innerHTML = '<tr><td colspan="5" class="text-center text-danger">Failed to load backups</td></tr>';
    }
}

async function createBackup() {
    if (!confirm('Create a new database backup?')) return;
    
    try {
        const response = await fetch('/api/admin/backup/create', { method: 'POST' });
        const result = await response.json();
        
        if (response.ok) {
            showAlert('Backup created successfully: ' + result.backup_info.filename, 'success');
            loadBackups();
        } else {
            showAlert(result.detail || 'Failed to create backup', 'error');
        }
        
    } catch (error) {
        console.error('Failed to create backup:', error);
        showAlert('Failed to create backup', 'error');
    }
}

function downloadBackup(filename) {
    window.open('/api/admin/backup/download', '_blank');
}

// Utility Functions
function refreshDashboard() {
    loadSystemHealth();
    loadSystemStats();
    loadUsers();
    loadSettings();
    loadLookupTables();
    loadBackups();
    showAlert('Dashboard refreshed', 'info');
}

function searchUsers() {
    const searchTerm = document.getElementById('user-search').value.toLowerCase();
    const filteredUsers = currentUsers.filter(user => 
        user.username.toLowerCase().includes(searchTerm) ||
        user.email.toLowerCase().includes(searchTerm) ||
        (user.first_name && user.first_name.toLowerCase().includes(searchTerm)) ||
        (user.last_name && user.last_name.toLowerCase().includes(searchTerm))
    );
    renderUsersTable(filteredUsers);
}

function filterUsers() {
    loadUsers(); // Reload with current filter
}

function showAlert(message, type = 'info') {
    const alertDiv = document.createElement('div');
    alertDiv.className = `alert alert-${type === 'error' ? 'danger' : type} alert-dismissible fade show position-fixed`;
    alertDiv.style.cssText = 'top: 20px; right: 20px; z-index: 9999; max-width: 400px;';
    
    alertDiv.innerHTML = `
        ${message}
        <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
    `;
    
    document.body.appendChild(alertDiv);
    
    // Auto-remove after 5 seconds
    setTimeout(() => {
        if (alertDiv.parentNode) {
            alertDiv.parentNode.removeChild(alertDiv);
        }
    }, 5000);
}
</script>
{% endblock %}