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

{% block title %}Communications Dashboard - {{ block.super }}{% endblock %}

{% block content %}
<div class="container-fluid">
    <!-- Page Header -->
    <div class="d-flex justify-content-between align-items-center mb-4">
        <div>
            <h1 class="h3 mb-1">Communications Dashboard</h1>
            <nav aria-label="breadcrumb">
                <ol class="breadcrumb mb-0">
                    <li class="breadcrumb-item"><a href="{% url 'accounts:dashboard' %}">Dashboard</a></li>
                    <li class="breadcrumb-item active">Communications</li>
                </ol>
            </nav>
        </div>
        <div class="btn-group">
            <a href="{% url 'communications:message_compose' %}" class="btn btn-primary">
                <i class="fas fa-plus me-2"></i>Compose Message
            </a>
            <button type="button" class="btn btn-outline-primary dropdown-toggle dropdown-toggle-split" data-bs-toggle="dropdown">
                <span class="visually-hidden">Toggle Dropdown</span>
            </button>
            <ul class="dropdown-menu">
                <li><a class="dropdown-item" href="{% url 'communications:broadcast_create' %}">
                    <i class="fas fa-bullhorn me-2"></i>Create Broadcast
                </a></li>
                <li><a class="dropdown-item" href="{% url 'communications:template_create' %}">
                    <i class="fas fa-file-alt me-2"></i>Create Template
                </a></li>
                <li><a class="dropdown-item" href="{% url 'communications:alert_rule_create' %}">
                    <i class="fas fa-exclamation-triangle me-2"></i>Create Alert Rule
                </a></li>
            </ul>
        </div>
    </div>

    <!-- Quick Stats -->
    <div class="row mb-4" hx-get="{% url 'communications:dashboard_stats' %}" hx-trigger="load, every 30s">
        <div class="col-xl-3 col-md-6 mb-3">
            <div class="card bg-gradient-primary text-white h-100">
                <div class="card-body">
                    <div class="d-flex justify-content-between align-items-center">
                        <div>
                            <div class="text-white-75 small">Unread Messages</div>
                            <div class="h4 mb-0" id="unread-messages">{{ stats.unread_messages|default:0 }}</div>
                        </div>
                        <div class="text-white-50">
                            <i class="fas fa-envelope fa-2x"></i>
                        </div>
                    </div>
                </div>
                <div class="card-footer d-flex align-items-center justify-content-between small">
                    <a class="text-white stretched-link" href="{% url 'communications:message_inbox' %}">View Inbox</a>
                    <div class="text-white"><i class="fas fa-angle-right"></i></div>
                </div>
            </div>
        </div>
        <div class="col-xl-3 col-md-6 mb-3">
            <div class="card bg-gradient-success text-white h-100">
                <div class="card-body">
                    <div class="d-flex justify-content-between align-items-center">
                        <div>
                            <div class="text-white-75 small">Messages Sent Today</div>
                            <div class="h4 mb-0" id="messages-sent-today">{{ stats.messages_sent_today|default:0 }}</div>
                        </div>
                        <div class="text-white-50">
                            <i class="fas fa-paper-plane fa-2x"></i>
                        </div>
                    </div>
                </div>
                <div class="card-footer d-flex align-items-center justify-content-between small">
                    <a class="text-white stretched-link" href="{% url 'communications:message_sent' %}">View Sent</a>
                    <div class="text-white"><i class="fas fa-angle-right"></i></div>
                </div>
            </div>
        </div>
        <div class="col-xl-3 col-md-6 mb-3">
            <div class="card bg-gradient-warning text-white h-100">
                <div class="card-body">
                    <div class="d-flex justify-content-between align-items-center">
                        <div>
                            <div class="text-white-75 small">Active Alerts</div>
                            <div class="h4 mb-0" id="active-alerts">{{ stats.active_alerts|default:0 }}</div>
                        </div>
                        <div class="text-white-50">
                            <i class="fas fa-exclamation-triangle fa-2x"></i>
                        </div>
                    </div>
                </div>
                <div class="card-footer d-flex align-items-center justify-content-between small">
                    <a class="text-white stretched-link" href="{% url 'communications:alert_list' %}">View Alerts</a>
                    <div class="text-white"><i class="fas fa-angle-right"></i></div>
                </div>
            </div>
        </div>
        <div class="col-xl-3 col-md-6 mb-3">
            <div class="card bg-gradient-info text-white h-100">
                <div class="card-body">
                    <div class="d-flex justify-content-between align-items-center">
                        <div>
                            <div class="text-white-75 small">Pending Notifications</div>
                            <div class="h4 mb-0" id="pending-notifications">{{ stats.pending_notifications|default:0 }}</div>
                        </div>
                        <div class="text-white-50">
                            <i class="fas fa-bell fa-2x"></i>
                        </div>
                    </div>
                </div>
                <div class="card-footer d-flex align-items-center justify-content-between small">
                    <a class="text-white stretched-link" href="{% url 'communications:notification_list' %}">View Notifications</a>
                    <div class="text-white"><i class="fas fa-angle-right"></i></div>
                </div>
            </div>
        </div>
    </div>

    <div class="row">
        <!-- Recent Messages -->
        <div class="col-lg-6 mb-4">
            <div class="card h-100">
                <div class="card-header d-flex justify-content-between align-items-center">
                    <h5 class="mb-0">
                        <i class="fas fa-inbox me-2"></i>Recent Messages
                    </h5>
                    <div class="btn-group btn-group-sm">
                        <button type="button" class="btn btn-outline-primary" hx-get="{% url 'communications:recent_messages' %}" hx-target="#recent-messages-list">
                            <i class="fas fa-sync-alt"></i>
                        </button>
                        <a href="{% url 'communications:message_inbox' %}" class="btn btn-outline-primary">
                            <i class="fas fa-external-link-alt"></i>
                        </a>
                    </div>
                </div>
                <div class="card-body p-0">
                    <div id="recent-messages-list" hx-get="{% url 'communications:recent_messages' %}" hx-trigger="load">
                        <div class="text-center p-4">
                            <div class="spinner-border text-primary" role="status">
                                <span class="visually-hidden">Loading...</span>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Communication Activity -->
        <div class="col-lg-6 mb-4">
            <div class="card h-100">
                <div class="card-header d-flex justify-content-between align-items-center">
                    <h5 class="mb-0">
                        <i class="fas fa-chart-line me-2"></i>Communication Activity
                    </h5>
                    <div class="btn-group btn-group-sm">
                        <button type="button" class="btn btn-outline-primary" onclick="refreshActivityChart()">
                            <i class="fas fa-sync-alt"></i>
                        </button>
                        <div class="dropdown">
                            <button class="btn btn-outline-primary dropdown-toggle" type="button" data-bs-toggle="dropdown">
                                <i class="fas fa-calendar"></i>
                            </button>
                            <ul class="dropdown-menu">
                                <li><a class="dropdown-item" href="#" onclick="updateActivityPeriod('7d')">Last 7 Days</a></li>
                                <li><a class="dropdown-item" href="#" onclick="updateActivityPeriod('30d')">Last 30 Days</a></li>
                                <li><a class="dropdown-item" href="#" onclick="updateActivityPeriod('90d')">Last 90 Days</a></li>
                            </ul>
                        </div>
                    </div>
                </div>
                <div class="card-body">
                    <canvas id="activityChart" width="100%" height="50"></canvas>
                </div>
            </div>
        </div>
    </div>

    <div class="row">
        <!-- Active Alerts -->
        <div class="col-lg-8 mb-4">
            <div class="card h-100">
                <div class="card-header d-flex justify-content-between align-items-center">
                    <h5 class="mb-0">
                        <i class="fas fa-exclamation-triangle me-2"></i>Active Alerts
                    </h5>
                    <div class="btn-group btn-group-sm">
                        <button type="button" class="btn btn-outline-primary" hx-get="{% url 'communications:active_alerts' %}" hx-target="#active-alerts-list">
                            <i class="fas fa-sync-alt"></i>
                        </button>
                        <a href="{% url 'communications:alert_list' %}" class="btn btn-outline-primary">
                            <i class="fas fa-external-link-alt"></i>
                        </a>
                    </div>
                </div>
                <div class="card-body p-0">
                    <div id="active-alerts-list" hx-get="{% url 'communications:active_alerts' %}" hx-trigger="load">
                        <div class="text-center p-4">
                            <div class="spinner-border text-warning" role="status">
                                <span class="visually-hidden">Loading...</span>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Quick Actions -->
        <div class="col-lg-4 mb-4">
            <div class="card h-100">
                <div class="card-header">
                    <h5 class="mb-0">
                        <i class="fas fa-bolt me-2"></i>Quick Actions
                    </h5>
                </div>
                <div class="card-body">
                    <div class="d-grid gap-2">
                        <a href="{% url 'communications:message_compose' %}" class="btn btn-outline-primary">
                            <i class="fas fa-edit me-2"></i>Compose Message
                        </a>
                        <a href="{% url 'communications:broadcast_create' %}" class="btn btn-outline-success">
                            <i class="fas fa-bullhorn me-2"></i>Send Broadcast
                        </a>
                        <a href="{% url 'communications:template_list' %}" class="btn btn-outline-info">
                            <i class="fas fa-file-alt me-2"></i>Manage Templates
                        </a>
                        <a href="{% url 'communications:notification_settings' %}" class="btn btn-outline-warning">
                            <i class="fas fa-cog me-2"></i>Notification Settings
                        </a>
                        <a href="{% url 'communications:communication_log' %}" class="btn btn-outline-secondary">
                            <i class="fas fa-history me-2"></i>Communication Log
                        </a>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Message Types Distribution -->
    <div class="row">
        <div class="col-lg-6 mb-4">
            <div class="card h-100">
                <div class="card-header">
                    <h5 class="mb-0">
                        <i class="fas fa-chart-pie me-2"></i>Message Types Distribution
                    </h5>
                </div>
                <div class="card-body">
                    <canvas id="messageTypesChart" width="100%" height="50"></canvas>
                </div>
            </div>
        </div>

        <!-- Delivery Status Overview -->
        <div class="col-lg-6 mb-4">
            <div class="card h-100">
                <div class="card-header">
                    <h5 class="mb-0">
                        <i class="fas fa-chart-bar me-2"></i>Delivery Status Overview
                    </h5>
                </div>
                <div class="card-body">
                    <canvas id="deliveryStatusChart" width="100%" height="50"></canvas>
                </div>
            </div>
        </div>
    </div>

    <!-- System Status -->
    <div class="row">
        <div class="col-12">
            <div class="card">
                <div class="card-header d-flex justify-content-between align-items-center">
                    <h5 class="mb-0">
                        <i class="fas fa-server me-2"></i>Communication System Status
                    </h5>
                    <div class="btn-group btn-group-sm">
                        <button type="button" class="btn btn-outline-primary" hx-get="{% url 'communications:system_status' %}" hx-target="#system-status-content">
                            <i class="fas fa-sync-alt"></i>
                        </button>
                    </div>
                </div>
                <div class="card-body">
                    <div id="system-status-content" hx-get="{% url 'communications:system_status' %}" hx-trigger="load, every 60s">
                        <div class="text-center p-4">
                            <div class="spinner-border text-info" role="status">
                                <span class="visually-hidden">Loading...</span>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<script>
// Chart.js configurations
let activityChart, messageTypesChart, deliveryStatusChart;

// Initialize charts when page loads
document.addEventListener('DOMContentLoaded', function() {
    initializeCharts();
    
    // Auto-refresh dashboard every 5 minutes
    setInterval(function() {
        refreshDashboard();
    }, 300000);
});

function initializeCharts() {
    // Activity Chart
    const activityCtx = document.getElementById('activityChart').getContext('2d');
    activityChart = new Chart(activityCtx, {
        type: 'line',
        data: {
            labels: [],
            datasets: [{
                label: 'Messages Sent',
                data: [],
                borderColor: 'rgb(75, 192, 192)',
                backgroundColor: 'rgba(75, 192, 192, 0.1)',
                tension: 0.1
            }, {
                label: 'Messages Received',
                data: [],
                borderColor: 'rgb(255, 99, 132)',
                backgroundColor: 'rgba(255, 99, 132, 0.1)',
                tension: 0.1
            }]
        },
        options: {
            responsive: true,
            maintainAspectRatio: false,
            scales: {
                y: {
                    beginAtZero: true
                }
            }
        }
    });

    // Message Types Chart
    const messageTypesCtx = document.getElementById('messageTypesChart').getContext('2d');
    messageTypesChart = new Chart(messageTypesCtx, {
        type: 'doughnut',
        data: {
            labels: ['Email', 'SMS', 'Internal', 'Push', 'Slack'],
            datasets: [{
                data: [0, 0, 0, 0, 0],
                backgroundColor: [
                    '#FF6384',
                    '#36A2EB',
                    '#FFCE56',
                    '#4BC0C0',
                    '#9966FF'
                ]
            }]
        },
        options: {
            responsive: true,
            maintainAspectRatio: false
        }
    });

    // Delivery Status Chart
    const deliveryStatusCtx = document.getElementById('deliveryStatusChart').getContext('2d');
    deliveryStatusChart = new Chart(deliveryStatusCtx, {
        type: 'bar',
        data: {
            labels: ['Sent', 'Delivered', 'Read', 'Failed'],
            datasets: [{
                label: 'Count',
                data: [0, 0, 0, 0],
                backgroundColor: [
                    '#28a745',
                    '#17a2b8',
                    '#6f42c1',
                    '#dc3545'
                ]
            }]
        },
        options: {
            responsive: true,
            maintainAspectRatio: false,
            scales: {
                y: {
                    beginAtZero: true
                }
            }
        }
    });

    // Load chart data
    loadChartData();
}

function loadChartData() {
    // Load activity chart data
    fetch('{% url "communications:activity_chart_data" %}')
        .then(response => response.json())
        .then(data => {
            activityChart.data.labels = data.labels;
            activityChart.data.datasets[0].data = data.sent;
            activityChart.data.datasets[1].data = data.received;
            activityChart.update();
        })
        .catch(error => console.error('Error loading activity chart data:', error));

    // Load message types chart data
    fetch('{% url "communications:message_types_chart_data" %}')
        .then(response => response.json())
        .then(data => {
            messageTypesChart.data.labels = data.labels;
            messageTypesChart.data.datasets[0].data = data.data;
            messageTypesChart.update();
        })
        .catch(error => console.error('Error loading message types chart data:', error));

    // Load delivery status chart data
    fetch('{% url "communications:delivery_status_chart_data" %}')
        .then(response => response.json())
        .then(data => {
            deliveryStatusChart.data.labels = data.labels;
            deliveryStatusChart.data.datasets[0].data = data.data;
            deliveryStatusChart.update();
        })
        .catch(error => console.error('Error loading delivery status chart data:', error));
}

function refreshActivityChart() {
    loadChartData();
}

function updateActivityPeriod(period) {
    fetch(`{% url "communications:activity_chart_data" %}?period=${period}`)
        .then(response => response.json())
        .then(data => {
            activityChart.data.labels = data.labels;
            activityChart.data.datasets[0].data = data.sent;
            activityChart.data.datasets[1].data = data.received;
            activityChart.update();
        })
        .catch(error => console.error('Error updating activity chart:', error));
}

function refreshDashboard() {
    // Trigger HTMX refresh for dynamic content
    htmx.trigger('#recent-messages-list', 'refresh');
    htmx.trigger('#active-alerts-list', 'refresh');
    htmx.trigger('#system-status-content', 'refresh');
    
    // Refresh charts
    loadChartData();
}

// Real-time notifications
if (typeof EventSource !== "undefined") {
    const eventSource = new EventSource('{% url "communications:sse_notifications" %}');
    
    eventSource.onmessage = function(event) {
        const data = JSON.parse(event.data);
        
        if (data.type === 'new_message') {
            // Update unread count
            const unreadElement = document.getElementById('unread-messages');
            if (unreadElement) {
                unreadElement.textContent = parseInt(unreadElement.textContent) + 1;
            }
            
            // Refresh recent messages
            htmx.trigger('#recent-messages-list', 'refresh');
            
            // Show toast notification
            showToast('New Message', data.message, 'info');
        } else if (data.type === 'new_alert') {
            // Update alert count
            const alertElement = document.getElementById('active-alerts');
            if (alertElement) {
                alertElement.textContent = parseInt(alertElement.textContent) + 1;
            }
            
            // Refresh alerts list
            htmx.trigger('#active-alerts-list', 'refresh');
            
            // Show toast notification
            showToast('New Alert', data.message, 'warning');
        }
    };
    
    eventSource.onerror = function(event) {
        console.error('SSE connection error:', event);
    };
}

function showToast(title, message, type) {
    // Create toast notification
    const toastHtml = `
        <div class="toast align-items-center text-white bg-${type === 'info' ? 'primary' : 'warning'} border-0" role="alert">
            <div class="d-flex">
                <div class="toast-body">
                    <strong>${title}</strong><br>
                    ${message}
                </div>
                <button type="button" class="btn-close btn-close-white me-2 m-auto" data-bs-dismiss="toast"></button>
            </div>
        </div>
    `;
    
    // Add to toast container (assuming it exists in base template)
    const toastContainer = document.getElementById('toast-container');
    if (toastContainer) {
        toastContainer.insertAdjacentHTML('beforeend', toastHtml);
        const toast = new bootstrap.Toast(toastContainer.lastElementChild);
        toast.show();
    }
}
</script>
{% endblock %}