{% extends "base.html" %}

{% block title %}Server Administration - Outline VPN{% endblock %}

{% block content %}
<div class="dashboard-container">
    {% include 'sidebar.html' %}
    
    <main class="main-content">
        <div class="container">
            <div class="d-flex justify-content-between align-items-center mb-4">
                <h1 class="h3">Server Administration</h1>
                <div class="btn-group">
                    <button class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#backupModal">
                        <i class="bi bi-download me-2"></i>Backup Configuration
                    </button>
                    <button class="btn btn-outline-primary" data-bs-toggle="modal" data-bs-target="#restoreModal">
                        <i class="bi bi-upload me-2"></i>Restore
                    </button>
                </div>
            </div>

            <div class="row">
                <!-- Server Configuration -->
                <div class="col-lg-8">
                    <div class="dashboard-card">
                        <h2 class="h5 mb-4">Server Configuration</h2>
                        <form id="serverConfigForm" action="{{ url_for('update_server_config') }}" method="POST">
                            <!-- Network Settings -->
                            <div class="mb-4">
                                <h3 class="h6 mb-3">Network Settings</h3>
                                <div class="row g-3">
                                    <div class="col-md-6">
                                        <label class="form-label">Server Port</label>
                                        <input type="number" class="form-control" name="port" value="{{ config.port }}" required>
                                    </div>
                                    <div class="col-md-6">
                                        <label class="form-label">Access Method</label>
                                        <select class="form-select" name="access_method">
                                            <option value="direct" {% if config.access_method == 'direct' %}selected{% endif %}>Direct</option>
                                            <option value="proxy" {% if config.access_method == 'proxy' %}selected{% endif %}>Proxy</option>
                                        </select>
                                    </div>
                                </div>
                            </div>

                            <!-- Protocol Settings -->
                            <div class="mb-4">
                                <h3 class="h6 mb-3">Protocol Settings</h3>
                                <div class="row g-3">
                                    <div class="col-md-6">
                                        <label class="form-label">Default Protocol</label>
                                        <select class="form-select" name="default_protocol">
                                            <option value="shadowsocks" {% if config.default_protocol == 'shadowsocks' %}selected{% endif %}>Shadowsocks</option>
                                            <option value="wireguard" {% if config.default_protocol == 'wireguard' %}selected{% endif %}>WireGuard</option>
                                            <option value="openvpn" {% if config.default_protocol == 'openvpn' %}selected{% endif %}>OpenVPN</option>
                                        </select>
                                    </div>
                                    <div class="col-md-6">
                                        <label class="form-label">Encryption Method</label>
                                        <select class="form-select" name="encryption_method">
                                            <option value="aes-256-gcm" {% if config.encryption_method == 'aes-256-gcm' %}selected{% endif %}>AES-256-GCM</option>
                                            <option value="chacha20-poly1305" {% if config.encryption_method == 'chacha20-poly1305' %}selected{% endif %}>ChaCha20-Poly1305</option>
                                        </select>
                                    </div>
                                </div>
                            </div>

                            <!-- Security Settings -->
                            <div class="mb-4">
                                <h3 class="h6 mb-3">Security Settings</h3>
                                <div class="row g-3">
                                    <div class="col-md-6">
                                        <label class="form-label">Session Timeout (minutes)</label>
                                        <input type="number" class="form-control" name="session_timeout" value="{{ config.session_timeout }}" required>
                                    </div>
                                    <div class="col-md-6">
                                        <label class="form-label">Max Failed Attempts</label>
                                        <input type="number" class="form-control" name="max_failed_attempts" value="{{ config.max_failed_attempts }}" required>
                                    </div>
                                </div>
                            </div>

                            <div class="text-end">
                                <button type="submit" class="btn btn-primary">Save Configuration</button>
                            </div>
                        </form>
                    </div>

                    <!-- Audit Log -->
                    <div class="dashboard-card mt-4">
                        <div class="d-flex justify-content-between align-items-center mb-4">
                            <h2 class="h5 mb-0">Audit Log</h2>
                            <div class="btn-group">
                                <button class="btn btn-outline-secondary btn-sm dropdown-toggle" data-bs-toggle="dropdown">
                                    Export
                                </button>
                                <ul class="dropdown-menu">
                                    <li><a class="dropdown-item" href="{{ url_for('export_audit_log', format='csv') }}">CSV</a></li>
                                    <li><a class="dropdown-item" href="{{ url_for('export_audit_log', format='json') }}">JSON</a></li>
                                </ul>
                            </div>
                        </div>
                        <div class="table-responsive">
                            <table class="table">
                                <thead>
                                    <tr>
                                        <th>Timestamp</th>
                                        <th>User</th>
                                        <th>Action</th>
                                        <th>Details</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    {% for log in audit_logs %}
                                    <tr>
                                        <td>{{ log.timestamp.strftime('%Y-%m-%d %H:%M:%S') }}</td>
                                        <td>{{ log.username }}</td>
                                        <td>{{ log.action }}</td>
                                        <td>{{ log.details }}</td>
                                    </tr>
                                    {% endfor %}
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>

                <!-- System Health -->
                <div class="col-lg-4">
                    <!-- Real-time Monitoring -->
                    <div class="dashboard-card">
                        <h2 class="h5 mb-4">System Health</h2>
                        <div class="mb-4">
                            <label class="form-label d-flex justify-content-between">
                                CPU Usage
                                <span class="text-{{ 'success' if system_health.cpu_usage < 70 else 'warning' if system_health.cpu_usage < 90 else 'danger' }}">
                                    {{ system_health.cpu_usage }}%
                                </span>
                            </label>
                            <div class="progress">
                                <div class="progress-bar bg-{{ 'success' if system_health.cpu_usage < 70 else 'warning' if system_health.cpu_usage < 90 else 'danger' }}"
                                     role="progressbar" style="width: {{ system_health.cpu_usage }}%"></div>
                            </div>
                        </div>
                        <div class="mb-4">
                            <label class="form-label d-flex justify-content-between">
                                Memory Usage
                                <span class="text-{{ 'success' if system_health.memory_usage < 70 else 'warning' if system_health.memory_usage < 90 else 'danger' }}">
                                    {{ system_health.memory_usage }}%
                                </span>
                            </label>
                            <div class="progress">
                                <div class="progress-bar bg-{{ 'success' if system_health.memory_usage < 70 else 'warning' if system_health.memory_usage < 90 else 'danger' }}"
                                     role="progressbar" style="width: {{ system_health.memory_usage }}%"></div>
                            </div>
                        </div>
                        <div class="mb-4">
                            <label class="form-label d-flex justify-content-between">
                                Disk Usage
                                <span class="text-{{ 'success' if system_health.disk_usage < 70 else 'warning' if system_health.disk_usage < 90 else 'danger' }}">
                                    {{ system_health.disk_usage }}%
                                </span>
                            </label>
                            <div class="progress">
                                <div class="progress-bar bg-{{ 'success' if system_health.disk_usage < 70 else 'warning' if system_health.disk_usage < 90 else 'danger' }}"
                                     role="progressbar" style="width: {{ system_health.disk_usage }}%"></div>
                            </div>
                        </div>
                    </div>

                    <!-- Active Alerts -->
                    <div class="dashboard-card mt-4">
                        <h2 class="h5 mb-4">Active Alerts</h2>
                        <div class="alerts-list">
                            {% for alert in active_alerts %}
                            <div class="alert alert-{{ alert.severity }} d-flex align-items-center">
                                <i class="bi bi-exclamation-triangle me-2"></i>
                                <div>
                                    <strong>{{ alert.title }}</strong>
                                    <p class="mb-0 small">{{ alert.message }}</p>
                                    <small class="text-muted">{{ alert.timestamp.strftime('%Y-%m-%d %H:%M:%S') }}</small>
                                </div>
                            </div>
                            {% endfor %}
                            {% if not active_alerts %}
                            <p class="text-muted text-center mb-0">No active alerts</p>
                            {% endif %}
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </main>
</div>

<!-- Backup Modal -->
<div class="modal fade" id="backupModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Backup Configuration</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <p>This will create a backup of your entire server configuration, including:</p>
                <ul>
                    <li>Server settings</li>
                    <li>User configurations</li>
                    <li>Security settings</li>
                    <li>Protocol configurations</li>
                </ul>
                <div class="form-check mb-3">
                    <input class="form-check-input" type="checkbox" id="includeUserData">
                    <label class="form-check-label" for="includeUserData">
                        Include user data and statistics
                    </label>
                </div>
            </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="createBackup()">Create Backup</button>
            </div>
        </div>
    </div>
</div>

<!-- Restore Modal -->
<div class="modal fade" id="restoreModal" tabindex="-1">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">Restore Configuration</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <form action="{{ url_for('restore_config') }}" method="POST" enctype="multipart/form-data">
                <div class="modal-body">
                    <div class="mb-3">
                        <label class="form-label">Select Backup File</label>
                        <input type="file" class="form-control" name="backup_file" accept=".zip,.json" required>
                    </div>
                    <div class="alert alert-warning">
                        <i class="bi bi-exclamation-triangle me-2"></i>
                        Restoring a backup will overwrite your current configuration. This action cannot be undone.
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
                    <button type="submit" class="btn btn-primary">Restore Configuration</button>
                </div>
            </form>
        </div>
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
// Real-time system health updates
function updateSystemHealth() {
    fetch('/api/system-health')
        .then(response => response.json())
        .then(data => {
            updateProgressBar('cpu-usage', data.cpu_usage);
            updateProgressBar('memory-usage', data.memory_usage);
            updateProgressBar('disk-usage', data.disk_usage);
        });
}

function updateProgressBar(id, value) {
    const bar = document.getElementById(id);
    const label = bar.previousElementSibling;
    bar.style.width = value + '%';
    label.textContent = value + '%';
    
    const colorClass = value < 70 ? 'success' : value < 90 ? 'warning' : 'danger';
    bar.className = `progress-bar bg-${colorClass}`;
}

// Create backup
function createBackup() {
    const includeUserData = document.getElementById('includeUserData').checked;
    window.location.href = `{{ url_for('create_backup') }}?include_user_data=${includeUserData}`;
}

// Initialize real-time updates
setInterval(updateSystemHealth, 5000);
</script>
{% endblock %}