@extends('admin.layouts.app')

@section('page-title', 'Staff Management Dashboard')

@section('content')
<style>
    :root {
        --primary: #4361ee;
        --primary-dark: #3a56d4;
        --secondary: #f72585;
        --success: #4cc9f0;
        --warning: #f8961e;
        --danger: #e63946;
        --light: #f8f9fa;
        --dark: #212529;
        --gray: #6c757d;
        --border: #e2e8f0;
        --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
        --hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    }

    /* Search Bar - Similar to Shipment */
    .search-staff-bar {
        display: flex;
        align-items: center;
        gap: 15px;
        padding: 20px;
        background: var(--gradient-primary);
        border-radius: 16px;
        box-shadow: var(--card-shadow);
        flex-wrap: wrap;
        margin-bottom: 30px;
        color: white;
        position: relative;
        overflow: hidden;
    }
    
    .search-staff-bar::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255,255,255,0.1);
        z-index: 0;
    }
    
    .search-staff-bar > * {
        position: relative;
        z-index: 1;
    }
    
    .search-staff-bar input, 
    .search-staff-bar select {
        padding: 12px 16px;
        border: 1px solid rgba(255,255,255,0.2);
        border-radius: 10px;
        flex: 1;
        min-width: 150px;
        background: rgba(255,255,255,0.9);
        font-weight: 500;
        transition: all 0.3s ease;
        color: var(--dark);
    }
    
    .search-staff-bar input:focus, 
    .search-staff-bar select:focus {
        background: white;
        box-shadow: 0 0 0 3px rgba(255,255,255,0.3);
        outline: none;
    }
    
    .btn-add-staff {
        background: rgba(255,255,255,0.2);
        backdrop-filter: blur(10px);
        color: white;
        border: 1px solid rgba(255,255,255,0.3);
        padding: 12px 24px;
        border-radius: 10px;
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 8px;
        transition: all 0.3s ease;
        white-space: nowrap;
        font-weight: 600;
        text-decoration: none;
    }
    
    .btn-add-staff:hover {
        background: rgba(255,255,255,0.3);
        transform: translateY(-2px);
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    }
    
    .search-icon {
        font-size: 20px;
        filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
    }
    
    .user-icon {
        font-size: 18px;
    }

    @media (max-width: 768px) {
        .search-staff-bar {
            flex-direction: column;
            align-items: stretch;
        }
        .search-staff-bar input, 
        .search-staff-bar select {
            width: 100%;
        }
    }
    
    /* Card Styles - Same as Shipment */
    .card {
        border: none;
        border-radius: 16px;
        box-shadow: var(--card-shadow);
        transition: all 0.3s ease;
        overflow: hidden;
    }
    
    .card:hover {
        transform: translateY(-5px);
        box-shadow: var(--hover-shadow);
    }
    
    .card-header {
        background: var(--gradient-primary);
        color: white;
        border: none;
        padding: 20px 25px;
        border-radius: 16px 16px 0 0 !important;
    }
    
    .card-header h5 {
        margin: 0;
        font-weight: 700;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    
    /* Table Styles - Similar to Shipment */
    .table-responsive {
        border-radius: 0 0 16px 16px;
        overflow-x: auto;
    }
    
    .table {
        margin: 0;
        border-collapse: separate;
        border-spacing: 0;
        width: 100%;
        padding: 0;
    }
    
    .table thead th {
        background: #f8f9fa;
        border: none;
        padding: 16px 12px;
        font-weight: 700;
        color: var(--dark);
        text-align: left;
        vertical-align: middle;
        border-bottom: 2px solid var(--border);
        position: relative;
    }
    
    .table tbody tr {
        transition: all 0.3s ease;
    }
    
    .table tbody tr:hover {
        background-color: #f8f9ff;
        transform: scale(1.01);
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }
    
    .table tbody td {
        padding: 14px 12px;
        text-align: left;
        vertical-align: middle;
        border-bottom: 1px solid var(--border);
        font-weight: 500;
    }
    
    .table tbody tr:last-child td {
        border-bottom: none;
    }
    
    /* Status Badges - Similar Style */
    .badge {
        padding: 6px 12px !important;
        border-radius: 20px !important;
        font-weight: 600 !important;
        font-size: 12px !important;
        border: 2px solid transparent !important;
        min-width: 80px !important;
        text-align: center !important;
        display: inline-block !important;
        line-height: 1.2 !important;
    }
    
    .badge-active {
        background: linear-gradient(135deg, #d1fae5, #a7f3d0) !important;
        color: #065f46 !important;
        border-color: #10b981 !important;
    }
    
    .badge-inactive {
        background: linear-gradient(135deg, #fecaca, #fca5a5) !important;
        color: #991b1b !important;
        border-color: #ef4444 !important;
    }
    
    .badge-pending {
        background: linear-gradient(135deg, #fef3c7, #fde68a) !important;
        color: #92400e !important;
        border-color: #f59e0b !important;
    }
    
    /* Employee ID Badge - Similar to Shipment ID */
    .employee-id-badge {
        font-family: 'Courier New', monospace;
        background: rgba(67, 97, 238, 0.1);
        padding: 4px 8px;
        border-radius: 6px;
        font-size: 0.85rem;
        color: var(--primary);
        border: 1px solid rgba(67, 97, 238, 0.2);
        display: inline-block;
    }
    
    /* Action Buttons - Similar Style */
    .action-buttons {
        display: flex;
        gap: 8px;
    }
    
    .btn-action {
        padding: 6px 12px;
        border-radius: 8px;
        font-size: 13px;
        font-weight: 600;
        text-decoration: none;
        transition: all 0.3s ease;
        display: inline-flex;
        align-items: center;
        gap: 5px;
        border: none;
        cursor: pointer;
    }
    
    .btn-edit {
        background: linear-gradient(135deg, #4cc9f0, #4361ee);
        color: white;
    }
    
    .btn-edit:hover {
        background: linear-gradient(135deg, #38bdf8, #3a56d4);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(76, 201, 240, 0.3);
    }
    
    .btn-delete {
        background: linear-gradient(135deg, #f87171, #ef4444);
        color: white;
    }
    
    .btn-delete:hover {
        background: linear-gradient(135deg, #ef4444, #dc2626);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
    }
    
    /* Success Message - Similar Style */
    .alert-success {
        background: linear-gradient(135deg, #e6ffed, #d1f7e5);
        border: 1px solid #b6f0c6;
        border-left: 4px solid var(--success);
        color: #0f5132;
        padding: 1rem 1.25rem;
        border-radius: 10px;
        margin-bottom: 1.5rem;
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }
    
    .alert-success:before {
        content: '✓';
        background: var(--success);
        color: white;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.75rem;
    }
    
    /* Empty State */
    .empty-state {
        text-align: center;
        padding: 3rem 1rem;
        color: var(--gray);
    }
    
    .empty-state:before {
        content: '👤';
        font-size: 3rem;
        display: block;
        margin-bottom: 1rem;
        opacity: 0.5;
    }
    
    /* Role Badges */
    .role-badge {
        padding: 4px 8px;
        border-radius: 6px;
        font-size: 11px;
        font-weight: 600;
        background: rgba(67, 97, 238, 0.1);
        color: var(--primary);
        border: 1px solid rgba(67, 97, 238, 0.2);
    }
    
    /* Stats Cards - Similar to Shipment Totals */
    .stats-cards {
        display: flex;
        gap: 20px;
        margin-bottom: 30px;
        flex-wrap: wrap;
    }
    
    .stat-card {
        flex: 1;
        min-width: 200px;
        background: white;
        padding: 20px;
        border-radius: 12px;
        box-shadow: var(--card-shadow);
        display: flex;
        align-items: center;
        gap: 15px;
        transition: all 0.3s ease;
    }
    
    .stat-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--hover-shadow);
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
    }
    
    .stat-icon.total {
        background: linear-gradient(135deg, #e6f3ff, #c2d9ff);
        color: var(--primary);
    }
    
    .stat-icon.active {
        background: linear-gradient(135deg, #d1fae5, #a7f3d0);
        color: #10b981;
    }
    
    .stat-content h3 {
        font-size: 1.8rem;
        font-weight: 700;
        margin: 0;
        color: var(--dark);
    }
    
    .stat-content p {
        color: var(--gray);
        margin: 4px 0 0 0;
        font-size: 0.875rem;
    }

    /* Pagination - Same as Shipment */
    .pagination-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-top: 15px;
        padding: 12px 25px;
        border-top: 1px solid #eef3fb;
    }

    .pagination-info {
        font-size: 13px;
        color: #9ba5bb;
        font-weight: 600;
    }

    .pagination-controls {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .pagination-btn {
        background: #fff;
        border: 1px solid #e3eaf6;
        color: #1a2951;
        padding: 8px 12px;
        border-radius: 6px;
        font-size: 13px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        display: flex;
        align-items: center;
        justify-content: center;
        min-width: 40px;
        height: 32px;
    }

    .pagination-btn:hover:not(:disabled) {
        background: #1a2951;
        color: white;
        border-color: #1a2951;
    }

    .pagination-btn:disabled {
        background: #f8fafc;
        color: #cbd5e0;
        border-color: #e2e8f0;
        cursor: not-allowed;
        opacity: 0.6;
    }

    .pagination-page-btn {
        background: #fff;
        border: 1px solid #e3eaf6;
        color: #1a2951;
        padding: 6px 12px;
        border-radius: 6px;
        font-size: 13px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
        min-width: 36px;
        text-align: center;
    }

    .pagination-page-btn:hover {
        background: #1a2951;
        color: white;
        border-color: #1a2951;
    }

    .pagination-page-btn.active {
        background: #1a2951;
        color: white;
        border-color: #1a2951;
    }

    .pagination-pages {
        display: flex;
        gap: 4px;
        align-items: center;
    }

    .pagination-ellipsis {
        color: #9ba5bb;
        font-size: 13px;
        padding: 0 4px;
    }

    @media (max-width: 768px) {
        .stats-cards {
            flex-direction: column;
        }
        
        .stat-card {
            min-width: 100%;
        }
        
        .pagination-container {
            flex-direction: column;
            gap: 10px;
            align-items: stretch;
        }
        
        .pagination-controls {
            justify-content: center;
        }
    }
</style>

<div class="container-fluid py-4">

    @if(session('success'))
        <div class="alert-success">
            {{ session('success') }}
        </div>
    @endif

    {{-- Stats Cards --}}
    <div class="stats-cards">
        <div class="stat-card">
            <div class="stat-icon total">
                👥
            </div>
            <div class="stat-content">
                <h3>{{ $staff->count() }}</h3>
                <p>Total Staff</p>
            </div>
        </div>
        <div class="stat-card">
            <div class="stat-icon active">
                ✅
            </div>
            <div class="stat-content">
                <h3>{{ $staff->where('status', 'active')->count() }}</h3>
                <p>Active Staff</p>
            </div>
        </div>
        <div class="stat-card">
            <div class="stat-icon" style="background: linear-gradient(135deg, #f3e8ff, #e9d5ff); color: #8b5cf6;">
                👑
            </div>
            <div class="stat-content">
                <h3>{{ $staff->unique('role')->count() }}</h3>
                <p>Unique Roles</p>
            </div>
        </div>
    </div>

    {{-- Search Bar --}}
    <div class="search-staff-bar">
        <span class="search-icon">🔍</span>
        <input type="text" id="searchInput" placeholder="Search by name, email, or employee ID...">
        <div class="status-filter-container">
            <select id="statusFilter" class="status-filter-select">
                <option value="all">All Status</option>
                <option value="active">Active</option>
                <option value="inactive">Inactive</option>
                <option value="pending">Pending</option>
            </select>
        </div>
        <select id="roleFilter">
            <option value="all">All Roles</option>
            @foreach($staff->unique('role')->pluck('role') as $role)
                @if($role)
                    <option value="{{ $role }}">{{ ucfirst($role) }}</option>
                @endif
            @endforeach
        </select>
        <a href="{{ route('admin.staff.create') }}" class="btn-add-staff">
            <span class="user-icon">➕</span>
            Add Staff
        </a>
    </div>

    {{-- Staff Table --}}
    <div class="card">
        <div class="card-header">
            <h5 class="mb-0"><i class="bi bi-people me-2"></i> Staff Management</h5>
        </div>

        <div class="card-body p-0">
            <div class="table-responsive">
                <table class="table table-hover mb-0">
                    <thead>
                        <tr>
                            <th>#</th>
                            <th>Employee ID</th>
                            <th>Name</th>
                            <th>Email</th>
                            <th>Phone</th>
                            <th>Role</th>
                            <th>Status</th>
                            <th>Actions</th>
                        </tr>
                    </thead>

                    <tbody id="staffTableBody">
                        @php
                            $totalStaff = count($staff);
                        @endphp
                        @forelse($staff as $s)
                        <tr class="staff-row" data-status="{{ $s->status }}" data-role="{{ $s->role ?? '' }}">
                            <td class="fw-bold">{{ $totalStaff - $loop->index }}</td>
                            <td>
                                <span class="employee-id-badge">{{ $s->employee_id }}</span>
                            </td>
                            <td>
                                <div class="d-flex align-items-center gap-2">
                                    <div style="width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, #667eea, #764ba2); display: flex; align-items: center; justify-content: center; color: white; font-weight: bold;">
                                        {{ strtoupper(substr($s->name, 0, 1)) }}
                                    </div>
                                    <span class="fw-medium">{{ $s->name }}</span>
                                </div>
                            </td>
                            <td>{{ $s->email }}</td>
                            <td>{{ $s->phone ?? '-' }}</td>
                            <td>
                                @if($s->role)
                                    <span class="role-badge">{{ $s->role }}</span>
                                @else
                                    <span class="text-muted">-</span>
                                @endif
                            </td>
                            <td>
                                <span class="badge badge-{{ $s->status }}">
                                    {{ ucfirst($s->status) }}
                                </span>
                            </td>
                            <td>
                                <div class="action-buttons">
                                    <a href="{{ route('admin.staff.edit', $s->id) }}" class="btn-action btn-edit">
                                        <i class="bi bi-pencil"></i>
                                        Edit
                                    </a>
                                    <form action="{{ route('admin.staff.destroy', $s->id) }}" method="POST" style="display:inline" onsubmit="return confirm('Are you sure you want to delete this staff member?')">
                                        @csrf
                                        @method('DELETE')
                                        <button type="submit" class="btn-action btn-delete">
                                            <i class="bi bi-trash"></i>
                                            Delete
                                        </button>
                                    </form>
                                </div>
                            </td>
                        </tr>
                        @empty
                        <tr>
                            <td colspan="8" class="text-center py-5 text-muted">
                                <div class="empty-state">
                                    No staff members found
                                </div>
                            </td>
                        </tr>
                        @endforelse
                    </tbody>
                </table>
            </div>

            {{-- Pagination --}}
            <div class="pagination-container">
                <div class="pagination-info" id="pageInfo">
                    Showing 1 to {{ $staff->count() }} of {{ $staff->count() }} entries
                </div>
                <div class="pagination-controls">
                    <button class="pagination-btn" id="prevPageBtn" title="Previous page" disabled>
                        <i class="bi bi-chevron-left"></i>
                    </button>
                    <div class="pagination-pages" id="paginationPages">
                        <button class="pagination-page-btn active">1</button>
                    </div>
                    <button class="pagination-btn" id="nextPageBtn" title="Next page" disabled>
                        <i class="bi bi-chevron-right"></i>
                    </button>
                </div>
            </div>
        </div>
    </div>
</div>

<script>
// Pagination state
let currentPage = 1;
const itemsPerPage = 10;
let allStaff = @json($staff);
let filteredStaff = [...allStaff];

// Initialize on page load
document.addEventListener('DOMContentLoaded', function() {
    renderTable();
    updatePaginationControls();
    
    // Bind pagination events
    document.getElementById('prevPageBtn').addEventListener('click', goToPreviousPage);
    document.getElementById('nextPageBtn').addEventListener('click', goToNextPage);

    // Filter functionality
    const statusFilter = document.getElementById('statusFilter');
    const searchInput = document.getElementById('searchInput');
    const roleFilter = document.getElementById('roleFilter');

    function filterStaff() {
        const selectedStatus = statusFilter.value;
        const searchTerm = searchInput.value.toLowerCase();
        const selectedRole = roleFilter.value;

        filteredStaff = allStaff.filter(staff => {
            let include = true;

            // Status filter
            if (selectedStatus !== 'all' && staff.status !== selectedStatus) {
                include = false;
            }

            // Role filter
            if (selectedRole !== 'all') {
                const staffRole = staff.role || '';
                if (staffRole.toLowerCase() !== selectedRole.toLowerCase()) {
                    include = false;
                }
            }

            // Search filter
            if (searchTerm) {
                const matchesSearch = 
                    staff.name.toLowerCase().includes(searchTerm) ||
                    staff.email.toLowerCase().includes(searchTerm) ||
                    (staff.employee_id && staff.employee_id.toLowerCase().includes(searchTerm)) ||
                    (staff.phone && staff.phone.toLowerCase().includes(searchTerm));
                if (!matchesSearch) include = false;
            }

            return include;
        });

        currentPage = 1;
        renderTable();
        updatePaginationControls();
    }

    // Event listeners for filters
    statusFilter.addEventListener('change', filterStaff);
    searchInput.addEventListener('input', filterStaff);
    roleFilter.addEventListener('change', filterStaff);

    // Initialize filter
    filterStaff();
});

// Pagination Functions
function goToPreviousPage() {
    if (currentPage > 1) {
        currentPage--;
        renderTable();
        updatePaginationControls();
    }
}

function goToNextPage() {
    const totalPages = Math.ceil(filteredStaff.length / itemsPerPage);
    if (currentPage < totalPages) {
        currentPage++;
        renderTable();
        updatePaginationControls();
    }
}

function updatePaginationControls() {
    const totalPages = Math.ceil(filteredStaff.length / itemsPerPage);
    const prevBtn = document.getElementById('prevPageBtn');
    const nextBtn = document.getElementById('nextPageBtn');
    const pageInfo = document.getElementById('pageInfo');
    const paginationPages = document.getElementById('paginationPages');
    
    prevBtn.disabled = currentPage === 1;
    nextBtn.disabled = currentPage === totalPages || totalPages === 0;
    
    // Update page info text
    const startIndex = (currentPage - 1) * itemsPerPage + 1;
    const endIndex = Math.min(currentPage * itemsPerPage, filteredStaff.length);
    pageInfo.textContent = `Showing ${startIndex} to ${endIndex} of ${filteredStaff.length} entries`;
    
    // Generate page numbers
    paginationPages.innerHTML = '';
    
    if (totalPages <= 7) {
        for (let i = 1; i <= totalPages; i++) {
            addPageButton(i, paginationPages);
        }
    } else {
        addPageButton(1, paginationPages);
        
        if (currentPage > 3) {
            paginationPages.innerHTML += '<span class="pagination-ellipsis">...</span>';
        }
        
        const start = Math.max(2, currentPage - 1);
        const end = Math.min(totalPages - 1, currentPage + 1);
        
        for (let i = start; i <= end; i++) {
            addPageButton(i, paginationPages);
        }
        
        if (currentPage < totalPages - 2) {
            paginationPages.innerHTML += '<span class="pagination-ellipsis">...</span>';
        }
        
        addPageButton(totalPages, paginationPages);
    }
}

function addPageButton(pageNumber, container) {
    const button = document.createElement('button');
    button.className = 'pagination-page-btn';
    if (pageNumber === currentPage) {
        button.classList.add('active');
    }
    button.textContent = pageNumber;
    button.addEventListener('click', () => {
        currentPage = pageNumber;
        renderTable();
        updatePaginationControls();
    });
    container.appendChild(button);
}

// Render Table
function renderTable() {
    const tbody = document.getElementById('staffTableBody');
    
    if (filteredStaff.length === 0) {
        tbody.innerHTML = `
            <tr>
                <td colspan="8" class="text-center py-5 text-muted">
                    <div class="empty-state">
                        No staff members found matching your criteria
                    </div>
                </td>
            </tr>
        `;
        return;
    }
    
    const startIndex = (currentPage - 1) * itemsPerPage;
    const endIndex = startIndex + itemsPerPage;
    const paginatedItems = filteredStaff.slice(startIndex, endIndex);
    
    const sortedItems = [...paginatedItems].sort((a, b) => new Date(b.created_at) - new Date(a.created_at));
    
    tbody.innerHTML = '';
    sortedItems.forEach((staff, index) => {
        const displayIndex = filteredStaff.length - (startIndex + index);
        const row = document.createElement('tr');
        row.className = 'staff-row';
        row.setAttribute('data-status', staff.status);
        row.setAttribute('data-role', staff.role || '');
        
        row.innerHTML = `
            <td class="fw-bold">${displayIndex}</td>
            <td>
                <span class="employee-id-badge">${staff.employee_id}</span>
            </td>
            <td>
                <div class="d-flex align-items-center gap-2">
                    <div style="width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, #667eea, #764ba2); display: flex; align-items: center; justify-content: center; color: white; font-weight: bold;">
                        ${staff.name ? staff.name.charAt(0).toUpperCase() : '?'}
                    </div>
                    <span class="fw-medium">${staff.name}</span>
                </div>
            </td>
            <td>${staff.email}</td>
            <td>${staff.phone || '-'}</td>
            <td>
                ${staff.role ? `<span class="role-badge">${staff.role}</span>` : '<span class="text-muted">-</span>'}
            </td>
            <td>
                <span class="badge badge-${staff.status}">
                    ${staff.status.charAt(0).toUpperCase() + staff.status.slice(1)}
                </span>
            </td>
            <td>
                <div class="action-buttons">
                    <a href="/admin/staff/${staff.id}/edit" class="btn-action btn-edit">
                        <i class="bi bi-pencil"></i>
                        Edit
                    </a>
                    <form action="/admin/staff/${staff.id}" method="POST" style="display:inline" onsubmit="return confirm('Are you sure you want to delete this staff member?')">
                        <input type="hidden" name="_token" value="{{ csrf_token() }}">
                        <input type="hidden" name="_method" value="DELETE">
                        <button type="submit" class="btn-action btn-delete">
                            <i class="bi bi-trash"></i>
                            Delete
                        </button>
                    </form>
                </div>
            </td>
        `;
        tbody.appendChild(row);
    });
}
</script>
@endsection