{% extends "base.html" %}

{% block title %}Admin - Ticket Management - Too Many Cables{% endblock %}

{% block description %}Administrative interface for managing customer support tickets and monitoring system performance.{% endblock %}

{% block content %}
<div class="admin-container">
    <div class="page-header">
        <h1 class="page-title">Admin - Ticket Management</h1>
        <p class="page-subtitle">Manage customer support tickets and monitor system performance</p>
    </div>

    <!-- Statistics Dashboard -->
    <div class="stats-grid">
        <div class="stat-card">
            <div class="stat-icon">📊</div>
            <div class="stat-content">
                <h3 id="total-tickets">-</h3>
                <p>Total Tickets</p>
            </div>
        </div>
        
        <div class="stat-card">
            <div class="stat-icon">🟢</div>
            <div class="stat-content">
                <h3 id="open-tickets">-</h3>
                <p>Open Tickets</p>
            </div>
        </div>
        
        <div class="stat-card">
            <div class="stat-icon">🔵</div>
            <div class="stat-content">
                <h3 id="in-progress-tickets">-</h3>
                <p>In Progress</p>
            </div>
        </div>
        
        <div class="stat-card">
            <div class="stat-icon">✅</div>
            <div class="stat-content">
                <h3 id="resolved-tickets">-</h3>
                <p>Resolved</p>
            </div>
        </div>
    </div>

    <!-- Filters and Controls -->
    <div class="glass-card filters-section">
        <div class="filters-header">
            <h3>Ticket Filters</h3>
            <button class="btn btn-primary" onclick="refreshTickets()">Refresh</button>
        </div>
        
        <div class="filters-row">
            <div class="filter-group">
                <label for="status-filter">Status:</label>
                <select id="status-filter" onchange="applyFilters()">
                    <option value="">All Status</option>
                    <option value="open">Open</option>
                    <option value="in_progress">In Progress</option>
                    <option value="resolved">Resolved</option>
                    <option value="closed">Closed</option>
                </select>
            </div>
            
            <div class="filter-group">
                <label for="priority-filter">Priority:</label>
                <select id="priority-filter" onchange="applyFilters()">
                    <option value="">All Priority</option>
                    <option value="low">Low</option>
                    <option value="medium">Medium</option>
                    <option value="high">High</option>
                    <option value="urgent">Urgent</option>
                </select>
            </div>
            
            <div class="filter-group">
                <label for="category-filter">Category:</label>
                <select id="category-filter" onchange="applyFilters()">
                    <option value="">All Categories</option>
                </select>
            </div>
        </div>
    </div>

    <!-- Tickets Table -->
    <div class="glass-card tickets-table-section">
        <div class="table-header">
            <h3>All Tickets</h3>
            <div class="pagination-info">
                <span id="pagination-text">Loading...</span>
            </div>
        </div>
        
        <div id="tickets-loading" class="loading-state">
            <div class="spinner"></div>
            <p>Loading tickets...</p>
        </div>
        
        <div id="tickets-table-container" style="display: none;">
            <table id="tickets-table" class="admin-table">
                <thead>
                    <tr>
                        <th>Ticket #</th>
                        <th>Customer</th>
                        <th>Subject</th>
                        <th>Category</th>
                        <th>Priority</th>
                        <th>Status</th>
                        <th>Assigned To</th>
                        <th>Created</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody id="tickets-table-body">
                </tbody>
            </table>
        </div>
        
        <!-- Pagination -->
        <div class="pagination-container">
            <button id="prev-page" class="btn btn-outline" onclick="changePage(-1)" disabled>Previous</button>
            <span id="page-info">Page 1 of 1</span>
            <button id="next-page" class="btn btn-outline" onclick="changePage(1)" disabled>Next</button>
        </div>
    </div>
</div>

<!-- Ticket Detail Modal -->
<div id="ticket-detail-modal" class="modal" style="display: none;">
    <div class="modal-content large-modal glass-card">
        <div class="modal-header">
            <h3 id="modal-ticket-title">Ticket Details</h3>
            <button class="modal-close" onclick="closeTicketModal()">&times;</button>
        </div>
        
        <div class="modal-body">
            <div id="ticket-detail-content"></div>
            
            <!-- Admin Actions -->
            <div class="admin-actions">
                <h4>Admin Actions</h4>
                
                <div class="action-row">
                    <div class="action-group">
                        <label for="assign-agent">Assign to Agent:</label>
                        <input type="text" id="assign-agent" placeholder="Agent name">
                        <button class="btn btn-secondary" onclick="assignTicket()">Assign</button>
                    </div>
                    
                    <div class="action-group">
                        <label for="update-status">Update Status:</label>
                        <select id="update-status">
                            <option value="open">Open</option>
                            <option value="in_progress">In Progress</option>
                            <option value="resolved">Resolved</option>
                            <option value="closed">Closed</option>
                        </select>
                        <button class="btn btn-secondary" onclick="updateStatus()">Update</button>
                    </div>
                </div>
                
                <div class="admin-reply-section">
                    <h5>Add Admin Reply</h5>
                    <textarea id="admin-reply" placeholder="Type your reply..." rows="3"></textarea>
                    <div class="reply-options">
                        <label>
                            <input type="checkbox" id="internal-note"> Internal note (not visible to customer)
                        </label>
                        <button class="btn btn-primary" onclick="addAdminReply()">Send Reply</button>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<style>
.admin-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.9);
    font-weight: 300;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(25px);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-icon {
    font-size: 2rem;
}

.stat-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin: 0;
}

.stat-content p {
    color: rgba(255,255,255,0.8);
    margin: 0;
    font-size: 0.9rem;
}

.glass-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.filters-header h3 {
    color: white;
    margin: 0;
}

.filters-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.filter-group label {
    display: block;
    color: rgba(255,255,255,0.9);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.filter-group select,
.filter-group input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 8px;
    background: rgba(255,255,255,0.1);
    color: white;
    font-size: 0.9rem;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.table-header h3 {
    color: white;
    margin: 0;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    overflow: hidden;
}

.admin-table th,
.admin-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.admin-table th {
    background: rgba(255,255,255,0.2);
    color: white;
    font-weight: 600;
}

.admin-table td {
    color: rgba(255,255,255,0.9);
}

.admin-table tr:hover {
    background: rgba(255,255,255,0.1);
}

.ticket-status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
}

.priority-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.priority-low { background: #95a5a6; color: white; }
.priority-medium { background: #3498db; color: white; }
.priority-high { background: #f39c12; color: white; }
.priority-urgent { background: #e74c3c; color: white; }

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.loading-state {
    text-align: center;
    padding: 2rem;
    color: rgba(255,255,255,0.8);
}

.spinner {
    border: 3px solid rgba(255,255,255,0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.large-modal {
    max-width: 900px;
    width: 95%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.modal-close:hover {
    opacity: 1;
}

.admin-actions {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.admin-actions h4,
.admin-actions h5 {
    color: white;
    margin-bottom: 1rem;
}

.action-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.action-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.action-group label {
    color: rgba(255,255,255,0.9);
    font-weight: 500;
}

.action-group input,
.action-group select {
    padding: 0.5rem;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 8px;
    background: rgba(255,255,255,0.1);
    color: white;
}

.admin-reply-section textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 8px;
    background: rgba(255,255,255,0.1);
    color: white;
    resize: vertical;
    margin-bottom: 1rem;
}

.reply-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.reply-options label {
    color: rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .filters-row {
        grid-template-columns: 1fr;
    }
    
    .action-row {
        grid-template-columns: 1fr;
    }
    
    .table-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .admin-table {
        font-size: 0.85rem;
    }
    
    .admin-table th,
    .admin-table td {
        padding: 0.5rem;
    }
}
</style>

<script>
// Admin ticket management functionality
let currentPage = 1;
let totalPages = 1;
let currentFilters = {};
let currentTicketId = null;

// Initialize page
document.addEventListener('DOMContentLoaded', function() {
    loadStats();
    loadCategories();
    loadTickets();
});

function loadStats() {
    fetch('/api/admin/tickets/stats')
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                const stats = data.stats.overall;
                document.getElementById('total-tickets').textContent = stats.total_tickets;
                document.getElementById('open-tickets').textContent = stats.open_tickets;
                document.getElementById('in-progress-tickets').textContent = stats.in_progress_tickets;
                document.getElementById('resolved-tickets').textContent = stats.resolved_tickets;
            }
        })
        .catch(error => console.error('Error loading stats:', error));
}

function loadCategories() {
    fetch('/api/tickets/categories')
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                const categorySelect = document.getElementById('category-filter');
                data.categories.forEach(category => {
                    const option = document.createElement('option');
                    option.value = category.name;
                    option.textContent = category.name;
                    categorySelect.appendChild(option);
                });
            }
        })
        .catch(error => console.error('Failed to load categories:', error));
}

function loadTickets(page = 1) {
    currentPage = page;
    document.getElementById('tickets-loading').style.display = 'block';
    document.getElementById('tickets-table-container').style.display = 'none';
    
    // Build query parameters
    const params = new URLSearchParams({
        page: page,
        limit: 20,
        ...currentFilters
    });
    
    fetch(`/api/admin/tickets?${params}`)
        .then(response => response.json())
        .then(data => {
            document.getElementById('tickets-loading').style.display = 'none';
            
            if (data.success) {
                displayTickets(data.tickets);
                updatePagination(data.pagination);
                document.getElementById('tickets-table-container').style.display = 'block';
            } else {
                console.error('Failed to load tickets:', data.error);
            }
        })
        .catch(error => {
            document.getElementById('tickets-loading').style.display = 'none';
            console.error('Error loading tickets:', error);
        });
}

function displayTickets(tickets) {
    const tbody = document.getElementById('tickets-table-body');
    tbody.innerHTML = '';
    
    tickets.forEach(ticket => {
        const row = createTicketRow(ticket);
        tbody.appendChild(row);
    });
}

function createTicketRow(ticket) {
    const tr = document.createElement('tr');
    const createdDate = new Date(ticket.created_at).toLocaleDateString();
    
    tr.innerHTML = `
        <td><strong>${ticket.ticket_number}</strong></td>
        <td>${ticket.first_name} ${ticket.last_name}<br><small>${ticket.email}</small></td>
        <td>${ticket.subject}</td>
        <td>${ticket.category}</td>
        <td><span class="priority-badge priority-${ticket.priority}">${ticket.priority}</span></td>
        <td><span class="ticket-status-badge status-${ticket.status}">${ticket.status.replace('_', ' ')}</span></td>
        <td>${ticket.assigned_agent || 'Unassigned'}</td>
        <td>${createdDate}</td>
        <td>
            <button class="btn btn-secondary" onclick="viewTicket('${ticket.ticket_number}')">View</button>
        </td>
    `;
    
    return tr;
}

function updatePagination(pagination) {
    totalPages = pagination.pages;
    document.getElementById('page-info').textContent = `Page ${pagination.page} of ${pagination.pages}`;
    document.getElementById('pagination-text').textContent = 
        `Showing ${((pagination.page - 1) * pagination.limit) + 1}-${Math.min(pagination.page * pagination.limit, pagination.total)} of ${pagination.total} tickets`;
    
    document.getElementById('prev-page').disabled = pagination.page <= 1;
    document.getElementById('next-page').disabled = pagination.page >= pagination.pages;
}

function changePage(direction) {
    const newPage = currentPage + direction;
    if (newPage >= 1 && newPage <= totalPages) {
        loadTickets(newPage);
    }
}

function applyFilters() {
    currentFilters = {
        status: document.getElementById('status-filter').value,
        priority: document.getElementById('priority-filter').value,
        category: document.getElementById('category-filter').value
    };
    
    // Remove empty filters
    Object.keys(currentFilters).forEach(key => {
        if (!currentFilters[key]) {
            delete currentFilters[key];
        }
    });
    
    loadTickets(1); // Reset to page 1 when filtering
}

function refreshTickets() {
    loadStats();
    loadTickets(currentPage);
}

function viewTicket(ticketNumber) {
    fetch(`/api/tickets/${ticketNumber}`)
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                showTicketDetails(data.ticket, data.updates);
                currentTicketId = data.ticket.id;
                document.getElementById('ticket-detail-modal').style.display = 'flex';
            } else {
                alert('Failed to load ticket details: ' + data.error);
            }
        })
        .catch(error => {
            console.error('Error loading ticket:', error);
            alert('Error loading ticket details.');
        });
}

function showTicketDetails(ticket, updates) {
    const container = document.getElementById('ticket-detail-content');
    const createdDate = new Date(ticket.created_at).toLocaleDateString();
    
    let updatesHtml = '';
    if (updates && updates.length > 0) {
        updatesHtml = '<h4 style="color: white; margin-top: 2rem;">Updates:</h4>';
        updates.forEach(update => {
            const updateDate = new Date(update.created_at).toLocaleDateString();
            const isInternal = update.is_internal ? ' (Internal)' : '';
            updatesHtml += `
                <div style="background: rgba(255,255,255,0.1); padding: 1rem; margin: 0.5rem 0; border-radius: 8px;">
                    <div style="color: rgba(255,255,255,0.8); font-size: 0.9rem; margin-bottom: 0.5rem;">
                        ${updateDate} - ${update.update_type}${isInternal}
                    </div>
                    <div style="color: white;">${update.message}</div>
                </div>
            `;
        });
    }
    
    container.innerHTML = `
        <div style="color: white;">
            <h4>Ticket ${ticket.ticket_number}</h4>
            <div style="display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin: 1rem 0;">
                <div>
                    <p><strong>Customer:</strong> ${ticket.first_name} ${ticket.last_name}</p>
                    <p><strong>Email:</strong> ${ticket.email}</p>
                    <p><strong>Status:</strong> <span class="ticket-status-badge status-${ticket.status}">${ticket.status.replace('_', ' ')}</span></p>
                    <p><strong>Priority:</strong> <span class="priority-badge priority-${ticket.priority}">${ticket.priority}</span></p>
                </div>
                <div>
                    <p><strong>Category:</strong> ${ticket.category}</p>
                    <p><strong>Assigned Agent:</strong> ${ticket.assigned_agent || 'Unassigned'}</p>
                    <p><strong>Created:</strong> ${createdDate}</p>
                    <p><strong>Escalation Level:</strong> ${ticket.escalation_level || 0}</p>
                </div>
            </div>
            <h5 style="margin-top: 1.5rem;">Subject:</h5>
            <p>${ticket.subject}</p>
            <h5 style="margin-top: 1.5rem;">Description:</h5>
            <p style="white-space: pre-wrap;">${ticket.description}</p>
            ${updatesHtml}
        </div>
    `;
    
    // Set current values in form fields
    document.getElementById('assign-agent').value = ticket.assigned_agent || '';
    document.getElementById('update-status').value = ticket.status;
    
    document.getElementById('modal-ticket-title').textContent = `Ticket ${ticket.ticket_number}`;
}

function assignTicket() {
    if (!currentTicketId) return;
    
    const agentName = document.getElementById('assign-agent').value.trim();
    if (!agentName) {
        alert('Please enter an agent name');
        return;
    }
    
    fetch(`/api/admin/tickets/${currentTicketId}/assign`, {
        method: 'PUT',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ assigned_agent: agentName })
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            alert('Ticket assigned successfully!');
            refreshTickets();
            closeTicketModal();
        } else {
            alert('Failed to assign ticket: ' + data.error);
        }
    })
    .catch(error => {
        console.error('Error assigning ticket:', error);
        alert('Error assigning ticket. Please try again.');
    });
}

function updateStatus() {
    if (!currentTicketId) return;
    
    const newStatus = document.getElementById('update-status').value;
    const resolutionNotes = newStatus === 'resolved' ? 
        prompt('Resolution notes (optional):') || '' : '';
    
    fetch(`/api/admin/tickets/${currentTicketId}/status`, {
        method: 'PUT',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ 
            status: newStatus,
            resolution_notes: resolutionNotes
        })
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            alert('Status updated successfully!');
            refreshTickets();
            closeTicketModal();
        } else {
            alert('Failed to update status: ' + data.error);
        }
    })
    .catch(error => {
        console.error('Error updating status:', error);
        alert('Error updating status. Please try again.');
    });
}

function addAdminReply() {
    if (!currentTicketId) return;
    
    const message = document.getElementById('admin-reply').value.trim();
    const isInternal = document.getElementById('internal-note').checked;
    
    if (!message) {
        alert('Please enter a message');
        return;
    }
    
    fetch(`/api/admin/tickets/${currentTicketId}/reply`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ 
            message: message,
            is_internal: isInternal
        })
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            alert('Reply added successfully!');
            document.getElementById('admin-reply').value = '';
            document.getElementById('internal-note').checked = false;
            // Reload ticket details
            const ticketNumber = document.getElementById('modal-ticket-title').textContent.replace('Ticket ', '');
            viewTicket(ticketNumber);
        } else {
            alert('Failed to add reply: ' + data.error);
        }
    })
    .catch(error => {
        console.error('Error adding reply:', error);
        alert('Error adding reply. Please try again.');
    });
}

function closeTicketModal() {
    document.getElementById('ticket-detail-modal').style.display = 'none';
    document.getElementById('admin-reply').value = '';
    document.getElementById('internal-note').checked = false;
    currentTicketId = null;
}

// Close modal on outside click
document.getElementById('ticket-detail-modal').addEventListener('click', function(e) {
    if (e.target === this) {
        closeTicketModal();
    }
});
</script>
{% endblock %}