@extends('layouts.auth.app')

@section('title', 'NIN Validation')

@section('content')
<!-- Page Header -->
<div class="bg-white rounded-2xl shadow-sm border border-gray-100 overflow-hidden mb-6">
    <div class="px-6 py-4 border-b border-gray-200">
        <h3 class="text-lg font-semibold text-gray-900">My Operations - NIN Validation</h3>
        <p class="text-sm text-gray-500 mt-1">Validate NIN records for individuals</p>
    </div>
</div>

<!-- NIN Validation Table -->
<div class="bg-white rounded-2xl shadow-sm border border-gray-100 overflow-hidden">
    <div class="px-6 py-4 border-b border-gray-200 flex justify-between items-center">
        <div>
            <h3 class="text-lg font-semibold text-gray-900">Validate NIN</h3>
            <p class="text-sm text-gray-500">Total Records: <span id="totalRecordsHeader">0</span></p>
        </div>
        <button type="button" id="submitButton" class="hidden inline-flex items-center px-4 py-2 bg-green-600 text-white font-medium rounded-lg hover:bg-green-700 transition-colors">
            Verify Selected (<span id="selectedCount">0</span>)
        </button>
    </div>

    @if(session('error'))
    <div class="px-6 py-3">
        <div class="p-3 rounded-md bg-red-50 text-red-800 text-sm">
            {{ session('error') }}
        </div>
    </div>
    @endif

    @if(session('success'))
    <div class="px-6 py-3">
        <div class="p-3 rounded-md bg-green-50 text-green-800 text-sm">
            {{ session('success') }}
        </div>
    </div>
    @endif

    <!-- Loading Spinner -->
    <div id="divLoader" class="hidden px-6 py-8 text-center">
        <div class="inline-block animate-spin rounded-full h-8 w-8 border-b-2 border-teal-600"></div>
        <p class="mt-2 text-sm text-gray-500">Please hold, your request is being processed...</p>
    </div>

    <!-- Table Container -->
    <div id="divLoaderPage">
        <!-- Table Controls -->
        <div class="px-6 py-3 bg-white border-b border-gray-200">
            <div class="flex items-center justify-between flex-wrap gap-4">
                <div class="flex items-center space-x-2">
                    <span class="text-sm text-gray-700">Show:</span>
                    <select id="itemsPerPage" class="px-2 py-1 text-sm border border-gray-300 rounded-md focus:ring-2 focus:ring-teal-500 focus:border-teal-500">
                        <option value="10">10</option>
                        <option value="25">25</option>
                        <option value="50">50</option>
                        <option value="100" selected>100</option>
                    </select>
                    <span class="text-sm text-gray-700">entries</span>
                </div>
                <div class="flex items-center space-x-2">
                    <label for="tableSearch" class="text-sm text-gray-700">Search:</label>
                    <input type="text" id="tableSearch" placeholder="Search RIN, Name, NIN..." class="px-3 py-1 text-sm border border-gray-300 rounded-md focus:ring-2 focus:ring-teal-500 focus:border-teal-500 w-56">
                </div>
            </div>
        </div>

        <!-- Table with fixed layout -->
        <div class="overflow-x-auto w-full">
            <table id="tblNinvalidation" class="min-w-full divide-y divide-gray-200 table-fixed">
                <thead class="bg-gray-50">
                    <tr>
                        <th scope="col" class="w-24 px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                            RIN
                        </th>
                        <th scope="col" class="w-40 px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                            Individual Name
                        </th>
                        <th scope="col" class="w-28 px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                            TIN
                        </th>
                        <th scope="col" class="w-28 px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                            NIN
                        </th>
                        <th scope="col" class="w-48 px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                            Address
                        </th>
                        <th scope="col" class="w-24 px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                            NIN Status
                        </th>
                        <th scope="col" class="w-20 px-4 py-3 text-center text-xs font-medium text-gray-500 uppercase tracking-wider">
                            <div class="flex items-center justify-center space-x-1">
                                <span>All</span>
                                <input type="checkbox" id="checkAll" class="h-4 w-4 rounded border-gray-300 text-teal-600 focus:ring-teal-500">
                            </div>
                        </th>
                    </tr>
                </thead>
                <tbody id="tableBody" class="bg-white divide-y divide-gray-200">
                </tbody>
            </table>
        </div>

        <!-- Loading Spinner for table -->
        <div id="loadingSpinner" class="hidden px-6 py-8 text-center">
            <div class="inline-block animate-spin rounded-full h-8 w-8 border-b-2 border-teal-600"></div>
            <p class="mt-2 text-sm text-gray-500">Loading...</p>
        </div>

        <!-- Empty State -->
        <div id="emptyState" class="hidden px-6 py-8 text-center">
            <p class="text-gray-500">No records found requiring NIN validation</p>
        </div>

        <!-- Pagination -->
        <div class="px-6 py-4 bg-gray-50 border-t border-gray-200">
            <div class="flex items-center justify-between flex-wrap gap-4">
                <p class="text-sm text-gray-700">
                    Showing <span id="showingFrom" class="font-medium">0</span> to <span id="showingTo" class="font-medium">0</span> of <span id="totalRecords" class="font-medium">0</span> results
                </p>
                <div id="paginationControls" class="flex items-center space-x-1"></div>
            </div>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script>
$(document).ready(function() {
    let currentPage = 1;
    let itemsPerPage = 100;
    let searchTerm = '';
    let totalRecords = 0;
    let selectedNINs = new Set();

    // Initial load
    loadData();

    // Items per page change
    $('#itemsPerPage').on('change', function() {
        itemsPerPage = parseInt($(this).val());
        currentPage = 1;
        loadData();
    });

    // Search with debounce
    let searchTimeout;
    $('#tableSearch').on('keyup', function() {
        clearTimeout(searchTimeout);
        searchTimeout = setTimeout(function() {
            searchTerm = $('#tableSearch').val();
            currentPage = 1;
            loadData();
        }, 400);
    });

    // Load data via AJAX
    function loadData() {
        $('#loadingSpinner').removeClass('hidden');
        $('#tableBody').html('');
        $('#emptyState').addClass('hidden');

        $.ajax({
            url: '{{ route("operation-manager.nin-validation-load-data") }}',
            type: 'POST',
            data: {
                _token: '{{ csrf_token() }}',
                draw: 1,
                start: (currentPage - 1) * itemsPerPage,
                length: itemsPerPage,
                'search[value]': searchTerm
            },
            success: function(response) {
                $('#loadingSpinner').addClass('hidden');
                totalRecords = response.recordsTotal;
                $('#totalRecordsHeader').text(totalRecords);

                if (response.data && response.data.length > 0) {
                    renderTable(response.data);
                    updatePagination();
                } else {
                    $('#emptyState').removeClass('hidden');
                    updatePaginationInfo(0, 0, 0);
                    $('#paginationControls').html('');
                }
            },
            error: function() {
                $('#loadingSpinner').addClass('hidden');
                $('#emptyState').removeClass('hidden').find('p').text('Error loading data.');
            }
        });
    }

    // Render table rows
    function renderTable(data) {
        let html = '';

        data.forEach(function(row) {
            const isChecked = selectedNINs.has(row.NIN) ? 'checked' : '';
            const statusClass = row.NINStatus === 'Verified' ? 'bg-green-100 text-green-800' : 'bg-yellow-100 text-yellow-800';

            html += '<tr class="hover:bg-gray-50">';
            html += '<td class="px-4 py-3 whitespace-nowrap text-sm text-gray-900">' + (row.IndividualRIN || '') + '</td>';
            html += '<td class="px-4 py-3 text-sm text-gray-900 truncate max-w-[160px]" title="' + (row.IndividualName || '') + '">' + (row.IndividualName || '') + '</td>';
            html += '<td class="px-4 py-3 whitespace-nowrap text-sm text-gray-900">' + (row.Tin || '') + '</td>';
            html += '<td class="px-4 py-3 whitespace-nowrap text-sm text-gray-900">' + (row.NIN || '') + '</td>';
            html += '<td class="px-4 py-3 text-sm text-gray-900 truncate max-w-[192px]" title="' + (row.ContactAddress || '') + '">' + (row.ContactAddress || '') + '</td>';
            html += '<td class="px-4 py-3 whitespace-nowrap text-sm">';
            html += '<span class="inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium ' + statusClass + '">' + (row.NINStatus || '') + '</span>';
            html += '</td>';
            html += '<td class="px-4 py-3 whitespace-nowrap text-center">';
            html += '<input type="checkbox" class="rowCheckbox h-4 w-4 rounded border-gray-300 text-teal-600 focus:ring-teal-500" value="' + (row.NIN || '') + '" ' + isChecked + '>';
            html += '</td>';
            html += '</tr>';
        });
        $('#tableBody').html(html);

        // Update checkAll state
        updateCheckAllState();
    }

    // Update pagination
    function updatePagination() {
        let start = totalRecords > 0 ? (currentPage - 1) * itemsPerPage + 1 : 0;
        let end = Math.min(currentPage * itemsPerPage, totalRecords);
        updatePaginationInfo(start, end, totalRecords);

        let totalPages = Math.ceil(totalRecords / itemsPerPage);
        let html = '';

        if (totalPages > 0) {
            html += '<button class="px-3 py-1 text-sm border border-gray-300 rounded-md ' + (currentPage === 1 ? 'bg-gray-100 text-gray-400 cursor-not-allowed' : 'bg-white text-gray-700 hover:bg-gray-50') + '" ' + (currentPage === 1 ? 'disabled' : '') + ' data-page="' + (currentPage - 1) + '">Prev</button>';

            let startPage = Math.max(1, currentPage - 2);
            let endPage = Math.min(totalPages, currentPage + 2);

            if (startPage > 1) {
                html += '<button class="px-3 py-1 text-sm border border-gray-300 rounded-md bg-white text-gray-700 hover:bg-gray-50" data-page="1">1</button>';
                if (startPage > 2) {
                    html += '<span class="px-2 text-gray-400">...</span>';
                }
            }

            for (let i = startPage; i <= endPage; i++) {
                html += '<button class="px-3 py-1 text-sm border rounded-md ' + (i === currentPage ? 'bg-teal-600 text-white border-teal-600' : 'bg-white text-gray-700 border-gray-300 hover:bg-gray-50') + '" data-page="' + i + '">' + i + '</button>';
            }

            if (endPage < totalPages) {
                if (endPage < totalPages - 1) {
                    html += '<span class="px-2 text-gray-400">...</span>';
                }
                html += '<button class="px-3 py-1 text-sm border border-gray-300 rounded-md bg-white text-gray-700 hover:bg-gray-50" data-page="' + totalPages + '">' + totalPages + '</button>';
            }

            html += '<button class="px-3 py-1 text-sm border border-gray-300 rounded-md ' + (currentPage === totalPages ? 'bg-gray-100 text-gray-400 cursor-not-allowed' : 'bg-white text-gray-700 hover:bg-gray-50') + '" ' + (currentPage === totalPages ? 'disabled' : '') + ' data-page="' + (currentPage + 1) + '">Next</button>';
        }

        $('#paginationControls').html(html);
        $('#paginationControls button:not(:disabled)').on('click', function() {
            currentPage = parseInt($(this).data('page'));
            loadData();
        });
    }

    function updatePaginationInfo(from, to, total) {
        $('#showingFrom').text(from);
        $('#showingTo').text(to);
        $('#totalRecords').text(total);
    }

    // 'Select All' checkbox
    $('#checkAll').on('click', function() {
        const isChecked = this.checked;
        $('.rowCheckbox').each(function() {
            $(this).prop('checked', isChecked);
            if (isChecked) {
                selectedNINs.add($(this).val());
            } else {
                selectedNINs.delete($(this).val());
            }
        });
        updateSubmitButtonVisibility();
    });

    // Individual checkbox - use event delegation
    $(document).on('click', '.rowCheckbox', function() {
        const nin = $(this).val();
        if (this.checked) {
            selectedNINs.add(nin);
        } else {
            selectedNINs.delete(nin);
        }
        updateCheckAllState();
        updateSubmitButtonVisibility();
    });

    function updateCheckAllState() {
        const visibleCheckboxes = $('.rowCheckbox').length;
        const checkedCheckboxes = $('.rowCheckbox:checked').length;
        $('#checkAll').prop('checked', visibleCheckboxes > 0 && checkedCheckboxes === visibleCheckboxes);
    }

    function updateSubmitButtonVisibility() {
        const count = selectedNINs.size;
        if (count > 0) {
            $('#submitButton').removeClass('hidden');
            $('#selectedCount').text(count);
        } else {
            $('#submitButton').addClass('hidden');
        }
    }

    // Form submission
    $('#submitButton').on('click', function() {
        if (selectedNINs.size === 0) {
            alert('Please select at least one item.');
            return;
        }

        if (!confirm('Are you sure you want to verify ' + selectedNINs.size + ' NIN(s)?')) {
            return;
        }

        // Show loader
        $('#divLoaderPage').hide();
        $('#divLoader').removeClass('hidden');

        $.ajax({
            url: '{{ route("operation-manager.process-nin-validation") }}',
            type: 'POST',
            data: {
                _token: '{{ csrf_token() }}',
                selectedIds: Array.from(selectedNINs)
            },
            success: function(response) {
                $('#divLoader').addClass('hidden');
                $('#divLoaderPage').show();

                if (response.success) {
                    alert(response.message);
                    selectedNINs.clear();
                    loadData();
                    updateSubmitButtonVisibility();
                } else {
                    alert('Error: ' + response.message);
                }
            },
            error: function(xhr, status, error) {
                $('#divLoader').addClass('hidden');
                $('#divLoaderPage').show();
                alert('Error: ' + error);
            }
        });
    });
});
</script>
@endpush