{% extends "base.html" %}
{% load static %}

{% block title %}User Sessions - Session Management{% endblock %}

{% block css %}
<link href="{% static 'assets/plugins/datatables.net-bs5/css/dataTables.bootstrap5.min.css' %}" rel="stylesheet" />
<link href="{% static 'assets/plugins/datatables.net-responsive-bs5/css/responsive.bootstrap5.min.css' %}" rel="stylesheet" />
{% endblock %}

{% block content %}
<!-- BEGIN breadcrumb -->
<ol class="breadcrumb float-xl-end">
    <li class="breadcrumb-item"><a href="{% url 'core:dashboard' %}">Dashboard</a></li>
    <li class="breadcrumb-item"><a href="{% url 'accounts:user_list' %}">Users</a></li>
    <li class="breadcrumb-item active">Sessions</li>
</ol>
<!-- END breadcrumb -->

<!-- BEGIN page-header -->
<h1 class="page-header">
    User Sessions
    <small>Active Session Management</small>
</h1>
<!-- END page-header -->

<!-- BEGIN panel -->
<div class="panel panel-inverse">
    <div class="panel-heading">
        <h4 class="panel-title">Session Management</h4>
        <div class="panel-heading-btn">
            <a href="javascript:;" class="btn btn-xs btn-icon btn-default" data-toggle="panel-expand"><i class="fa fa-expand"></i></a>
            <a href="javascript:;" class="btn btn-xs btn-icon btn-default" data-toggle="panel-reload"><i class="fa fa-redo"></i></a>
            <a href="javascript:;" class="btn btn-xs btn-icon btn-default" data-toggle="panel-collapse"><i class="fa fa-minus"></i></a>
        </div>
    </div>
    <div class="panel-body">
        <!-- Filters and Search -->
        <div class="row mb-3">
            <div class="col-md-4">
                <label class="form-label">Search Sessions</label>
                <div class="input-group">
                    <input type="text" class="form-control" id="search-input" placeholder="Username, IP address...">
                    <button class="btn btn-outline-secondary" type="button" id="search-btn">
                        <i class="fa fa-search"></i>
                    </button>
                </div>
            </div>
            <div class="col-md-3">
                <label class="form-label">Status</label>
                <select class="form-select" id="status-filter">
                    <option value="">All Sessions</option>
                    <option value="active">Active</option>
                    <option value="expired">Expired</option>
                </select>
            </div>
            <div class="col-md-3">
                <label class="form-label">Time Range</label>
                <select class="form-select" id="time-filter">
                    <option value="">All Time</option>
                    <option value="today">Today</option>
                    <option value="week">This Week</option>
                    <option value="month">This Month</option>
                </select>
            </div>
            <div class="col-md-2">
                <label class="form-label">&nbsp;</label>
                <div class="d-grid">
                    <button class="btn btn-outline-danger" onclick="terminateAllSessions()">
                        <i class="fa fa-sign-out-alt me-2"></i>Terminate All
                    </button>
                </div>
            </div>
        </div>

        <!-- Quick Stats -->
        <div class="row mb-4">
            <div class="col-lg-3 col-md-6 mb-3">
                <div class="card border-0 bg-primary text-white">
                    <div class="card-body">
                        <div class="d-flex align-items-center">
                            <div class="flex-fill">
                                <div class="fs-10px text-white-transparent-5 mb-1">ACTIVE SESSIONS</div>
                                <div class="fs-18px fw-900 text-white" id="active-sessions">-</div>
                            </div>
                            <div class="w-50px h-50px bg-white-transparent-2 rounded-circle d-flex align-items-center justify-content-center">
                                <i class="fa fa-users fa-lg text-white"></i>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
            <div class="col-lg-3 col-md-6 mb-3">
                <div class="card border-0 bg-success text-white">
                    <div class="card-body">
                        <div class="d-flex align-items-center">
                            <div class="flex-fill">
                                <div class="fs-10px text-white-transparent-5 mb-1">UNIQUE USERS</div>
                                <div class="fs-18px fw-900 text-white" id="unique-users">-</div>
                            </div>
                            <div class="w-50px h-50px bg-white-transparent-2 rounded-circle d-flex align-items-center justify-content-center">
                                <i class="fa fa-user fa-lg text-white"></i>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
            <div class="col-lg-3 col-md-6 mb-3">
                <div class="card border-0 bg-warning text-white">
                    <div class="card-body">
                        <div class="d-flex align-items-center">
                            <div class="flex-fill">
                                <div class="fs-10px text-white-transparent-5 mb-1">EXPIRED TODAY</div>
                                <div class="fs-18px fw-900 text-white" id="expired-today">-</div>
                            </div>
                            <div class="w-50px h-50px bg-white-transparent-2 rounded-circle d-flex align-items-center justify-content-center">
                                <i class="fa fa-clock fa-lg text-white"></i>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
            <div class="col-lg-3 col-md-6 mb-3">
                <div class="card border-0 bg-info text-white">
                    <div class="card-body">
                        <div class="d-flex align-items-center">
                            <div class="flex-fill">
                                <div class="fs-10px text-white-transparent-5 mb-1">AVG DURATION</div>
                                <div class="fs-18px fw-900 text-white" id="avg-duration">-</div>
                            </div>
                            <div class="w-50px h-50px bg-white-transparent-2 rounded-circle d-flex align-items-center justify-content-center">
                                <i class="fa fa-stopwatch fa-lg text-white"></i>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Action Buttons -->
        <div class="d-flex justify-content-between align-items-center mb-3">
            <div class="btn-group">
                <button type="button" class="btn btn-outline-secondary" id="bulk-actions-btn" disabled>
                    <i class="fa fa-tasks me-2"></i>Bulk Actions
                </button>
                <button type="button" class="btn btn-outline-secondary dropdown-toggle dropdown-toggle-split" 
                        data-bs-toggle="dropdown" id="bulk-dropdown" disabled>
                    <span class="visually-hidden">Toggle Dropdown</span>
                </button>
                <ul class="dropdown-menu">
                    <li><a class="dropdown-item text-danger" href="#" onclick="bulkTerminate()">
                        <i class="fa fa-sign-out-alt me-2"></i>Terminate Selected
                    </a></li>
                    <li><hr class="dropdown-divider"></li>
                    <li><a class="dropdown-item" href="#" onclick="bulkExport()">
                        <i class="fa fa-download me-2"></i>Export Selected
                    </a></li>
                </ul>
            </div>
            
            <div class="btn-group">
                <button type="button" class="btn btn-outline-secondary" onclick="refreshTable()">
                    <i class="fa fa-refresh me-2"></i>Refresh
                </button>
                <button type="button" class="btn btn-outline-secondary dropdown-toggle" data-bs-toggle="dropdown">
                    <i class="fa fa-download me-2"></i>Export
                </button>
                <ul class="dropdown-menu">
                    <li><a class="dropdown-item" href="#" onclick="exportData('csv')">
                        <i class="fa fa-file-csv me-2"></i>Export as CSV
                    </a></li>
                    <li><a class="dropdown-item" href="#" onclick="exportData('excel')">
                        <i class="fa fa-file-excel me-2"></i>Export as Excel
                    </a></li>
                </ul>
            </div>
        </div>

        <!-- Sessions Table -->
        <div class="table-responsive">
            <table id="sessions-table" class="table table-striped table-bordered align-middle">
                <thead>
                    <tr>
                        <th width="30">
                            <div class="form-check">
                                <input class="form-check-input" type="checkbox" id="select-all">
                            </div>
                        </th>
                        <th>User</th>
                        <th>Session Key</th>
                        <th>IP Address</th>
                        <th>User Agent</th>
                        <th>Created</th>
                        <th>Last Activity</th>
                        <th>Status</th>
                        <th width="120">Actions</th>
                    </tr>
                </thead>
                <tbody>
                    <!-- Data will be loaded via AJAX -->
                </tbody>
            </table>
        </div>
    </div>
</div>
<!-- END panel -->
{% endblock %}

{% block js %}
<script src="{% static 'assets/plugins/datatables.net/js/jquery.dataTables.min.js' %}"></script>
<script src="{% static 'assets/plugins/datatables.net-bs5/js/dataTables.bootstrap5.min.js' %}"></script>
<script src="{% static 'assets/plugins/datatables.net-responsive/js/dataTables.responsive.min.js' %}"></script>
<script src="{% static 'assets/plugins/datatables.net-responsive-bs5/js/responsive.bootstrap5.min.js' %}"></script>
<script>
$(document).ready(function() {
    var table;
    
    // Initialize DataTable
    table = $('#sessions-table').DataTable({
        processing: true,
        serverSide: true,
        ajax: {
            url: '{% url "accounts:session_list_api" %}',
            data: function(d) {
                d.search_value = $('#search-input').val();
                d.status = $('#status-filter').val();
                d.time_range = $('#time-filter').val();
            }
        },
        columns: [
            {
                data: 'session_key',
                orderable: false,
                render: function(data, type, row) {
                    return '<div class="form-check"><input class="form-check-input session-checkbox" type="checkbox" value="' + data + '"></div>';
                }
            },
            {
                data: 'user',
                render: function(data, type, row) {
                    if (data) {
                        return '<div>' +
                               '<div class="fw-bold">' + data.full_name + '</div>' +
                               '<div class="text-muted small">' + data.username + '</div>' +
                               '</div>';
                    } else {
                        return '<span class="text-muted">Anonymous</span>';
                    }
                }
            },
            {
                data: 'session_key',
                render: function(data, type, row) {
                    return '<code class="small">' + data.substring(0, 16) + '...</code>';
                }
            },
            {
                data: 'ip_address',
                render: function(data, type, row) {
                    return data || '<span class="text-muted">Unknown</span>';
                }
            },
            {
                data: 'user_agent',
                render: function(data, type, row) {
                    if (data) {
                        var browser = getBrowserInfo(data);
                        return '<div>' +
                               '<div class="small">' + browser.name + ' ' + browser.version + '</div>' +
                               '<div class="text-muted small">' + browser.os + '</div>' +
                               '</div>';
                    } else {
                        return '<span class="text-muted">Unknown</span>';
                    }
                }
            },
            {
                data: 'created_at',
                render: function(data, type, row) {
                    return moment(data).format('MMM DD, YYYY HH:mm');
                }
            },
            {
                data: 'last_activity',
                render: function(data, type, row) {
                    return moment(data).fromNow();
                }
            },
            {
                data: 'is_active',
                render: function(data, type, row) {
                    if (data) {
                        return '<span class="badge bg-success">Active</span>';
                    } else {
                        return '<span class="badge bg-secondary">Expired</span>';
                    }
                }
            },
            {
                data: 'session_key',
                orderable: false,
                render: function(data, type, row) {
                    var actions = '<div class="btn-group btn-group-sm">';
                    actions += '<button class="btn btn-outline-primary" onclick="viewSession(\'' + data + '\')" title="View">';
                    actions += '<i class="fa fa-eye"></i></button>';
                    if (row.is_active) {
                        actions += '<button class="btn btn-outline-danger" onclick="terminateSession(\'' + data + '\')" title="Terminate">';
                        actions += '<i class="fa fa-sign-out-alt"></i></button>';
                    }
                    actions += '</div>';
                    return actions;
                }
            }
        ],
        order: [[6, 'desc']],
        pageLength: 25,
        responsive: true,
        language: {
            processing: '<div class="d-flex justify-content-center"><div class="spinner-border" role="status"></div></div>'
        }
    });
    
    // Load stats
    loadStats();
    
    // Filter event handlers
    $('#search-input, #status-filter, #time-filter').on('change keyup', function() {
        table.draw();
    });
    
    // Select all checkbox
    $('#select-all').on('change', function() {
        $('.session-checkbox').prop('checked', this.checked);
        updateBulkActions();
    });
    
    // Individual checkbox change
    $(document).on('change', '.session-checkbox', function() {
        updateBulkActions();
    });
    
    // Auto-refresh every 30 seconds
    setInterval(function() {
        table.ajax.reload(null, false);
        loadStats();
    }, 30000);
});

function loadStats() {
    $.ajax({
        url: '{% url "accounts:session_stats" %}',
        success: function(data) {
            $('#active-sessions').text(data.active_sessions);
            $('#unique-users').text(data.unique_users);
            $('#expired-today').text(data.expired_today);
            $('#avg-duration').text(data.avg_duration);
        }
    });
}

function updateBulkActions() {
    var checkedCount = $('.session-checkbox:checked').length;
    $('#bulk-actions-btn, #bulk-dropdown').prop('disabled', checkedCount === 0);
}

function viewSession(sessionKey) {
    window.location.href = '{% url "accounts:session_detail" "SESSION_KEY" %}'.replace('SESSION_KEY', sessionKey);
}

function terminateSession(sessionKey) {
    if (confirm('Are you sure you want to terminate this session?')) {
        $.ajax({
            url: '{% url "accounts:session_terminate" "SESSION_KEY" %}'.replace('SESSION_KEY', sessionKey),
            method: 'POST',
            data: {
                'csrfmiddlewaretoken': '{{ csrf_token }}'
            },
            success: function(response) {
                if (response.success) {
                    toastr.success('Session terminated successfully');
                    $('#sessions-table').DataTable().ajax.reload();
                } else {
                    toastr.error('Failed to terminate session');
                }
            },
            error: function() {
                toastr.error('An error occurred while terminating the session');
            }
        });
    }
}

function terminateAllSessions() {
    if (confirm('Are you sure you want to terminate ALL active sessions? This will log out all users.')) {
        $.ajax({
            url: '{% url "accounts:session_terminate_all" %}',
            method: 'POST',
            data: {
                'csrfmiddlewaretoken': '{{ csrf_token }}'
            },
            success: function(response) {
                if (response.success) {
                    toastr.success('All sessions terminated successfully');
                    $('#sessions-table').DataTable().ajax.reload();
                    loadStats();
                } else {
                    toastr.error('Failed to terminate all sessions');
                }
            },
            error: function() {
                toastr.error('An error occurred while terminating sessions');
            }
        });
    }
}

function bulkTerminate() {
    var selectedSessions = $('.session-checkbox:checked').map(function() {
        return this.value;
    }).get();
    
    if (selectedSessions.length === 0) {
        toastr.warning('Please select sessions to terminate');
        return;
    }
    
    if (confirm('Are you sure you want to terminate ' + selectedSessions.length + ' session(s)?')) {
        $.ajax({
            url: '{% url "accounts:session_bulk_terminate" %}',
            method: 'POST',
            data: {
                'session_keys': selectedSessions,
                'csrfmiddlewaretoken': '{{ csrf_token }}'
            },
            success: function(response) {
                if (response.success) {
                    toastr.success(response.message);
                    $('#sessions-table').DataTable().ajax.reload();
                    $('#select-all').prop('checked', false);
                    updateBulkActions();
                } else {
                    toastr.error('Failed to terminate sessions');
                }
            },
            error: function() {
                toastr.error('An error occurred during bulk termination');
            }
        });
    }
}

function bulkExport() {
    var selectedSessions = $('.session-checkbox:checked').map(function() {
        return this.value;
    }).get();
    
    if (selectedSessions.length === 0) {
        toastr.warning('Please select sessions to export');
        return;
    }
    
    window.location.href = '{% url "accounts:session_export" %}?sessions=' + selectedSessions.join(',');
}

function exportData(format) {
    window.location.href = '{% url "accounts:session_export" %}?format=' + format;
}

function refreshTable() {
    $('#sessions-table').DataTable().ajax.reload();
    loadStats();
    toastr.info('Table refreshed');
}

function getBrowserInfo(userAgent) {
    // Simple browser detection
    var browser = { name: 'Unknown', version: '', os: 'Unknown' };
    
    if (userAgent.includes('Chrome')) {
        browser.name = 'Chrome';
        var match = userAgent.match(/Chrome\/(\d+)/);
        browser.version = match ? match[1] : '';
    } else if (userAgent.includes('Firefox')) {
        browser.name = 'Firefox';
        var match = userAgent.match(/Firefox\/(\d+)/);
        browser.version = match ? match[1] : '';
    } else if (userAgent.includes('Safari')) {
        browser.name = 'Safari';
        var match = userAgent.match(/Version\/(\d+)/);
        browser.version = match ? match[1] : '';
    }
    
    if (userAgent.includes('Windows')) {
        browser.os = 'Windows';
    } else if (userAgent.includes('Mac')) {
        browser.os = 'macOS';
    } else if (userAgent.includes('Linux')) {
        browser.os = 'Linux';
    } else if (userAgent.includes('Android')) {
        browser.os = 'Android';
    } else if (userAgent.includes('iOS')) {
        browser.os = 'iOS';
    }
    
    return browser;
}
</script>
{% endblock %}