<?php
$title = 'ICT Assets Management';
$active = 'ict';
require_once __DIR__ . '/../layouts/header.php';
require_once __DIR__ . '/../layouts/sidebar.php';

// Ensure variables are defined with defaults
$assets = isset($assets) ? $assets : [];
$statistics = isset($statistics) ? $statistics : [
    'total' => 0,
    'by_category' => [],
    'total_value' => 0
];

// Get zones for filter dropdown from controller
$zones = isset($zones) ? $zones : [];
?>

<div class="container-fluid">
    <!-- Page Header -->
    <div class="page-header">
        <div class="header-content">
            <h1>
                <i class="fas fa-server"></i>
                ICT Assets Management
            </h1>
            <p>Manage all ICT equipment, hardware, and software assets</p>
        </div>
        <div class="header-actions">
            <?php if (Auth::can('ict.create')): ?>
            <a href="<?php echo BASE_URL; ?>/ict/create" class="btn btn-success">
                <i class="fas fa-plus-circle"></i> Add New ICT Asset
            </a>
            <?php endif; ?>
            <?php if (Auth::can('reports.export')): ?>
            <a href="<?php echo BASE_URL; ?>/ict/export" class="btn btn-outline">
                <i class="fas fa-download"></i> Export
            </a>
            <?php endif; ?>
        </div>
    </div>

    <!-- Statistics Cards -->
    <div class="stats-grid">
        <div class="stat-card">
            <div class="stat-icon total">
                <i class="fas fa-server"></i>
            </div>
            <div class="stat-details">
                <h4>Total Assets</h4>
                <p class="stat-number"><?php echo number_format($statistics['total'] ?? 0); ?></p>
            </div>
        </div>
        <div class="stat-card">
            <div class="stat-icon hardware">
                <i class="fas fa-microchip"></i>
            </div>
            <div class="stat-details">
                <h4>Hardware</h4>
                <p class="stat-number"><?php echo number_format($statistics['by_category']['Hardware'] ?? 0); ?></p>
            </div>
        </div>
        <div class="stat-card">
            <div class="stat-icon software">
                <i class="fas fa-code"></i>
            </div>
            <div class="stat-details">
                <h4>Software</h4>
                <p class="stat-number"><?php echo number_format($statistics['by_category']['Software'] ?? 0); ?></p>
            </div>
        </div>
        <div class="stat-card">
            <div class="stat-icon network">
                <i class="fas fa-network-wired"></i>
            </div>
            <div class="stat-details">
                <h4>Network</h4>
                <p class="stat-number"><?php echo number_format($statistics['by_category']['Network'] ?? 0); ?></p>
            </div>
        </div>
        <div class="stat-card">
            <div class="stat-icon value">
                <i class="fas fa-money-bill-wave"></i>
            </div>
            <div class="stat-details">
                <h4>Total Value</h4>
                <p class="stat-number">₦<?php echo number_format($statistics['total_value'] ?? 0, 2); ?></p>
            </div>
        </div>
    </div>

    <!-- Filters -->
    <div class="filter-section">
        <div class="filter-header" onclick="toggleFilters()">
            <h3><i class="fas fa-filter"></i> Filter ICT Assets</h3>
            <i class="fas fa-chevron-down" id="filterToggleIcon"></i>
        </div>
        <div class="filter-body" id="filterBody" style="display: block;">
            <div class="filter-grid">
                <div class="filter-group">
                    <label>Search</label>
                    <input type="text" id="searchAssets" class="form-control" placeholder="Search by name, serial, IP...">
                </div>
                <div class="filter-group">
                    <label>Category</label>
                    <select id="filterCategory" class="form-control">
                        <option value="">All Categories</option>
                        <option value="Hardware">Hardware</option>
                        <option value="Software">Software</option>
                        <option value="Network">Network</option>
                        <option value="Server">Server</option>
                        <option value="Peripheral">Peripheral</option>
                    </select>
                </div>
                <div class="filter-group">
                    <label>Status</label>
                    <select id="filterStatus" class="form-control">
                        <option value="">All Status</option>
                        <option value="In Use">In Use</option>
                        <option value="Available">Available</option>
                        <option value="Under Repair">Under Repair</option>
                        <option value="Decommissioned">Decommissioned</option>
                    </select>
                </div>
                <div class="filter-group">
                    <label>Zone</label>
                    <select id="filterZone" class="form-control">
                        <option value="">All Zones</option>
                        <?php if (!empty($zones) && is_array($zones)): ?>
                            <?php foreach ($zones as $zone): ?>
                                <option value="<?php echo $zone['id'] ?? ''; ?>">
                                    <?php echo Security::escape($zone['zone_name'] ?? ''); ?>
                                </option>
                            <?php endforeach; ?>
                        <?php endif; ?>
                    </select>
                </div>
            </div>
            <div class="filter-actions">
                <button class="btn btn-primary" onclick="applyFilters()">
                    <i class="fas fa-filter"></i> Apply Filters
                </button>
                <button class="btn btn-outline" onclick="resetFilters()">
                    <i class="fas fa-times"></i> Clear Filters
                </button>
            </div>
        </div>
    </div>

    <!-- ICT Assets Table -->
    <div class="content-card">
        <div class="section-title">
            <h2><i class="fas fa-list"></i> ICT Assets Register</h2>
            <div class="card-actions">
                <span class="record-count">Showing <span id="recordCount"><?php echo count($assets); ?></span> records</span>
            </div>
        </div>

        <div class="table-responsive">
            <?php if (empty($assets)): ?>
                <div class="empty-state">
                    <i class="fas fa-server"></i>
                    <p>No ICT assets found</p>
                    <?php if (Auth::can('ict.create')): ?>
                    <a href="<?php echo BASE_URL; ?>/ict/create" class="btn btn-primary">
                        <i class="fas fa-plus"></i> Add First Asset
                    </a>
                    <?php endif; ?>
                </div>
            <?php else: ?>
            <table class="asset-table" id="ictTable">
                <thead>
                    <tr>
                        <th data-sort="text">S/N</th>
                        <th data-sort="text">Asset Code</th>
                        <th data-sort="text">Description</th>
                        <th data-sort="text">Category</th>
                        <th data-sort="text">Manufacturer</th>
                        <th data-sort="text">Model</th>
                        <th data-sort="text">Serial Number</th>
                        <th data-sort="text">Location</th>
                        <th data-sort="text">Status</th>
                        <th data-sort="text">IP Address</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                    <?php foreach ($assets as $index => $asset): ?>
                    <tr data-category="<?php echo $asset['asset_category'] ?? ''; ?>" 
                        data-status="<?php echo strtolower($asset['current_status'] ?? ''); ?>"
                        data-zone="<?php echo $asset['zone_id'] ?? ''; ?>">
                        <td><?php echo $index + 1; ?></td>
                        <td>
                            <span class="asset-code"><?php echo Security::escape($asset['asset_code'] ?? ''); ?></span>
                        </td>
                        <td><?php echo Security::escape($asset['asset_description'] ?? ''); ?></td>
                        <td>
                            <?php 
                            $category = $asset['asset_category'] ?? '';
                            $categoryClass = '';
                            if ($category == 'Hardware') $categoryClass = 'badge-hardware';
                            elseif ($category == 'Software') $categoryClass = 'badge-software';
                            elseif ($category == 'Network') $categoryClass = 'badge-network';
                            elseif ($category == 'Server') $categoryClass = 'badge-server';
                            else $categoryClass = 'badge-peripheral';
                            ?>
                            <span class="badge <?php echo $categoryClass; ?>">
                                <?php echo Security::escape($category); ?>
                            </span>
                        </td>
                        <td><?php echo Security::escape($asset['manufacturer'] ?? '-'); ?></td>
                        <td><?php echo Security::escape($asset['model_version'] ?? '-'); ?></td>
                        <td>
                            <?php if (!empty($asset['serial_number'])): ?>
                                <span class="serial-number"><?php echo Security::escape($asset['serial_number']); ?></span>
                            <?php else: ?>
                                -
                            <?php endif; ?>
                        </td>
                        <td>
                            <?php 
                            $location = [];
                            if (!empty($asset['location'])) $location[] = $asset['location'];
                            if (!empty($asset['lga_name'])) $location[] = $asset['lga_name'];
                            if (!empty($asset['state_name'])) $location[] = $asset['state_name'];
                            echo Security::escape(implode(', ', $location));
                            ?>
                        </td>
                        <td>
                            <?php 
                            $status = $asset['current_status'] ?? '';
                            $statusClass = '';
                            if ($status == 'In Use') $statusClass = 'status-active';
                            elseif ($status == 'Available') $statusClass = 'status-available';
                            elseif ($status == 'Under Repair') $statusClass = 'status-warning';
                            elseif ($status == 'Decommissioned') $statusClass = 'status-rejected';
                            ?>
                            <span class="status-badge <?php echo $statusClass; ?>">
                                <?php echo Security::escape($status ?: 'Not Set'); ?>
                            </span>
                        </td>
                        <td>
                            <?php if (!empty($asset['ip_address'])): ?>
                                <code><?php echo Security::escape($asset['ip_address']); ?></code>
                            <?php else: ?>
                                -
                            <?php endif; ?>
                        </td>
                        <td>
                            <div class="action-buttons">
                                <a href="<?php echo BASE_URL; ?>/ict/show/<?php echo $asset['id'] ?? ''; ?>" 
                                   class="btn-icon" title="View Details">
                                    <i class="fas fa-eye"></i>
                                </a>
                                <?php if (Auth::can('ict.edit')): ?>
                                <a href="<?php echo BASE_URL; ?>/ict/edit/<?php echo $asset['id'] ?? ''; ?>" 
                                   class="btn-icon" title="Edit">
                                    <i class="fas fa-edit"></i>
                                </a>
                                <?php endif; ?>
                                <?php if (Auth::can('ict.delete')): ?>
                                <a href="<?php echo BASE_URL; ?>/ict/delete/<?php echo $asset['id'] ?? ''; ?>" 
                                   class="btn-icon delete" title="Delete"
                                   onclick="return confirm('Are you sure you want to delete this ICT asset?')">
                                    <i class="fas fa-trash"></i>
                                </a>
                                <?php endif; ?>
                            </div>
                        </td>
                    </tr>
                    <?php endforeach; ?>
                </tbody>
            </table>
            <?php endif; ?>
        </div>
        
        <!-- Pagination -->
        <div class="pagination" id="pagination"></div>
    </div>
</div>

<style>
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.stat-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.total {
    background: #e3f2fd;
    color: #1976d2;
}

.stat-icon.hardware {
    background: #e8f5e9;
    color: #388e3c;
}

.stat-icon.software {
    background: #fff3e0;
    color: #f57c00;
}

.stat-icon.network {
    background: #e0f2f1;
    color: #00796b;
}

.stat-icon.value {
    background: #d1c4e9;
    color: #512da8;
}

.stat-details h4 {
    margin: 0 0 5px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.stat-number {
    font-size: 1.8rem;
    font-weight: bold;
    margin: 0;
    color: var(--text-primary);
    line-height: 1.2;
}

/* Filter Section */
.filter-section {
    background: white;
    border-radius: 10px;
    margin-bottom: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    overflow: hidden;
}

.filter-header {
    padding: 15px 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.filter-header h3 {
    margin: 0;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-header i {
    transition: transform 0.3s ease;
}

.filter-body {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.filter-group {
    display: flex;
    flex-direction: column;
}

.filter-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
    font-weight: 600;
}

.filter-group input,
.filter-group select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
}

.filter-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* Category Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-hardware {
    background: #e8f5e9;
    color: #2e7d32;
}

.badge-software {
    background: #fff3e0;
    color: #ef6c00;
}

.badge-network {
    background: #e0f2f1;
    color: #00695c;
}

.badge-server {
    background: #d1c4e9;
    color: #512da8;
}

.badge-peripheral {
    background: #e1f5fe;
    color: #0277bd;
}

.serial-number {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    background: var(--light-bg);
    padding: 2px 6px;
    border-radius: 4px;
}

code {
    font-family: 'Courier New', monospace;
    background: #272822;
    color: #f8f8f2;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-active {
    background: #d4edda;
    color: #155724;
}

.status-available {
    background: #d1ecf1;
    color: #0c5460;
}

.status-warning {
    background: #fff3cd;
    color: #856404;
}

.status-rejected {
    background: #f8d7da;
    color: #721c24;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.page-link {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
}

.page-link:hover {
    background: var(--light-bg);
    border-color: var(--success-color);
}

.page-link.active {
    background: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

.page-link:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 1rem;
    margin: 0 0 15px 0;
}

.record-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filter-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-actions {
        flex-direction: column;
    }
}
</style>

<script>
let currentPage = 1;
const rowsPerPage = 10;
let filteredRows = [];

function toggleFilters() {
    const filterBody = document.getElementById('filterBody');
    const toggleIcon = document.getElementById('filterToggleIcon');
    
    if (filterBody.style.display === 'none') {
        filterBody.style.display = 'block';
        toggleIcon.className = 'fas fa-chevron-up';
    } else {
        filterBody.style.display = 'none';
        toggleIcon.className = 'fas fa-chevron-down';
    }
}

function applyFilters() {
    const searchTerm = document.getElementById('searchAssets').value.toLowerCase().trim();
    const category = document.getElementById('filterCategory').value;
    const status = document.getElementById('filterStatus').value.toLowerCase();
    const zone = document.getElementById('filterZone').value;
    
    const rows = document.querySelectorAll('#ictTable tbody tr');
    filteredRows = [];
    
    rows.forEach(row => {
        let show = true;
        
        // Search filter
        if (searchTerm !== '') {
            const text = row.textContent.toLowerCase();
            show = show && text.includes(searchTerm);
        }
        
        // Category filter
        if (category !== '' && show) {
            const categoryCell = row.querySelector('.badge');
            if (categoryCell) {
                show = categoryCell.textContent.trim() === category;
            }
        }
        
        // Status filter
        if (status !== '' && show) {
            const statusCell = row.querySelector('.status-badge');
            if (statusCell) {
                show = statusCell.textContent.trim().toLowerCase() === status;
            }
        }
        
        // Zone filter
        if (zone !== '' && show) {
            show = row.dataset.zone === zone;
        }
        
        if (show) {
            filteredRows.push(row);
        }
    });
    
    updateDisplay();
}

function resetFilters() {
    document.getElementById('searchAssets').value = '';
    document.getElementById('filterCategory').value = '';
    document.getElementById('filterStatus').value = '';
    document.getElementById('filterZone').value = '';
    
    const rows = document.querySelectorAll('#ictTable tbody tr');
    filteredRows = Array.from(rows);
    
    updateDisplay();
}

function updateDisplay() {
    const totalRecords = filteredRows.length;
    document.getElementById('recordCount').textContent = totalRecords;
    
    // Hide all rows first
    document.querySelectorAll('#ictTable tbody tr').forEach(row => {
        row.style.display = 'none';
    });
    
    if (totalRecords === 0) {
        document.getElementById('pagination').innerHTML = '';
        return;
    }
    
    // Show only current page
    const start = (currentPage - 1) * rowsPerPage;
    const end = Math.min(start + rowsPerPage, totalRecords);
    
    for (let i = start; i < end; i++) {
        if (filteredRows[i]) {
            filteredRows[i].style.display = '';
        }
    }
    
    updatePagination(totalRecords);
}

function updatePagination(totalRecords) {
    const totalPages = Math.ceil(totalRecords / rowsPerPage);
    const pagination = document.getElementById('pagination');
    
    if (totalPages <= 1) {
        pagination.innerHTML = '';
        return;
    }
    
    let html = `
        <button class="page-link" onclick="changePage(${currentPage - 1})" ${currentPage === 1 ? 'disabled' : ''}>
            <i class="fas fa-chevron-left"></i> Previous
        </button>
        <span class="page-info">Page ${currentPage} of ${totalPages}</span>
        <button class="page-link" onclick="changePage(${currentPage + 1})" ${currentPage === totalPages ? 'disabled' : ''}>
            Next <i class="fas fa-chevron-right"></i>
        </button>
    `;
    
    pagination.innerHTML = html;
}

function changePage(page) {
    currentPage = page;
    updateDisplay();
}

// Initialize on page load
document.addEventListener('DOMContentLoaded', function() {
    const rows = document.querySelectorAll('#ictTable tbody tr');
    filteredRows = Array.from(rows);
    document.getElementById('recordCount').textContent = filteredRows.length;
});

// Debounced search
let searchTimeout;
document.getElementById('searchAssets').addEventListener('input', function() {
    clearTimeout(searchTimeout);
    searchTimeout = setTimeout(() => {
        currentPage = 1;
        applyFilters();
    }, 300);
});

document.getElementById('filterCategory').addEventListener('change', function() {
    currentPage = 1;
    applyFilters();
});

document.getElementById('filterStatus').addEventListener('change', function() {
    currentPage = 1;
    applyFilters();
});

document.getElementById('filterZone').addEventListener('change', function() {
    currentPage = 1;
    applyFilters();
});
</script>
