@extends('layouts.app')

@section('content')
    <div id="page-container" class="fade page-sidebar-fixed page-header-fixed page-with-wide-sidebar">
        <!-- begin #header -->
        @include('partials.header')
        <!-- end #header -->

        <!-- begin #sidebar -->
        @include('partials.sidebar')
        <!-- end #sidebar -->

        <!-- begin #content -->
        <div id="content" class="content">
            <!-- begin breadcrumb -->
            <ol class="breadcrumb float-xl-right">
                <li class="breadcrumb-item"><a href="javascript:;">Home</a></li>
                <li class="breadcrumb-item"><a href="javascript:;">Information Display</a></li>
                <li class="breadcrumb-item active">Running Text</li>
            </ol>
            <!-- end breadcrumb -->

            <!-- begin page-header -->
            <h1 class="page-header">Running Text Management</h1>
            <!-- end page-header -->

            <!-- begin panel -->
            <div class="panel panel-inverse">
                <div class="panel-heading">
                    <div class="panel-heading-btn">
                        <a href="{{ route('running_texts.create') }}" class="btn btn-sm btn-custom">
                            <i class="fa fa-plus"></i> Add New Running Text
                        </a>
                    </div>
                </div>
                <div class="panel-body">
                        @if (session('success'))
                            <div class="alert alert-success alert-dismissible fade show" role="alert">
                                {{ session('success') }}
                                <button type="button" class="close" data-dismiss="alert" aria-label="Close">
                                    <span aria-hidden="true">&times;</span>
                                </button>
                            </div>
                        @endif

                        @if (session('error') || $errors->any())
                            <div class="alert alert-danger alert-dismissible fade show" role="alert">
                                @if (session('error'))
                                    {{ session('error') }}
                                @endif
                                @foreach ($errors->all() as $error)
                                    <div>{{ $error }}</div>
                                @endforeach
                                <button type="button" class="close" data-dismiss="alert" aria-label="Close">
                                    <span aria-hidden="true">&times;</span>
                                </button>
                            </div>
                        @endif

                    <div class="table-responsive">
                        <table id="data-table-default" class="table table-striped table-bordered table-td-valign-middle">
                            <thead>
                                <tr>
                                    <th width="60%">Content</th>
                                    <th width="10%">Status</th>
                                    <th width="15%">Created At</th>
                                    <th width="15%">Actions</th>
                                </tr>
                            </thead>
                            <tbody>
                                @forelse ($runningTexts as $runningText)
                                    <tr>
                                        <td>
                                            <div class="text-truncate" style="max-width: 400px;"
                                                title="{{ strip_tags($runningText->content) }}">
                                                {{ Str::limit(strip_tags($runningText->content), 100) }}
                                            </div>
                                        </td>
                                        <td>
                                            <div class="switcher">
                                                <input type="checkbox" name="active_status"
                                                    id="switcher_checkbox_{{ $runningText->id }}"
                                                    {{ $runningText->is_active ? 'checked' : '' }}
                                                    onchange="updateActiveStatus({{ $runningText->id }}, this.checked)"
                                                    data-running-text-id="{{ $runningText->id }}">
                                                <label for="switcher_checkbox_{{ $runningText->id }}"></label>
                                            </div>
                                        </td>
                                        <td>{{ $runningText->created_at->format('M d, Y H:i') }}</td>
                                        <td>
                                            <div class="btn-group" role="group">
                                                <a href="{{ route('running_texts.show', $runningText->id) }}"
                                                    class="btn btn-sm btn-custom" title="View">
                                                    <i class="fa fa-eye"></i>
                                                </a>
                                                <a href="{{ route('running_texts.edit', $runningText->id) }}"
                                                    class="btn btn-sm btn-custom" title="Edit">
                                                    <i class="fa fa-edit"></i>
                                                </a>
                                                <form action="{{ route('running_texts.destroy', $runningText->id) }}"
                                                    method="POST" style="display: inline;"
                                                    onsubmit="return confirmDelete('{{ e($runningText->content) }}')">
                                                    @csrf
                                                    @method('DELETE')
                                                    <button type="submit" class="btn btn-sm btn-danger" title="Delete">
                                                        <i class="fa fa-trash"></i>
                                                    </button>
                                                </form>
                                            </div>
                                        </td>
                                    </tr>
                                @empty
                                    <tr>
                                        <td colspan="4" class="text-center py-4">
                                            <div class="text-muted">
                                                <i class="fa fa-info-circle fa-2x mb-2"></i>
                                                <p>No running texts found.</p>
                                                <a href="{{ route('running_texts.create') }}" class="btn btn-custom">
                                                    <i class="fa fa-plus"></i> Create First Running Text
                                                </a>
                                            </div>
                                        </td>
                                    </tr>
                                @endforelse
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
            <!-- end panel -->
        </div>
        <!-- end #content -->

        <!-- begin scroll to top btn -->
        <a href="javascript:;" class="btn btn-icon btn-circle btn-success btn-scroll-to-top fade" data-click="scroll-top">
            <i class="fa fa-angle-up"></i>
        </a>
        <!-- end scroll to top btn -->
    </div>

    <script>
        // CSRF token for all AJAX requests
        const csrfToken = document.querySelector('meta[name="csrf-token"]').getAttribute('content');

        // Request counter for preventing race conditions
        let activeRequests = new Set();

        /**
         * Update active status via AJAX
         */
        function updateActiveStatus(id, isActive) {
            // Prevent concurrent requests for the same item
            const requestKey = `toggle_${id}`;
            if (activeRequests.has(requestKey)) {
                return;
            }
            activeRequests.add(requestKey);

            // Get checkbox element
            const checkbox = document.getElementById(`switcher_checkbox_${id}`);
            if (!checkbox) {
                activeRequests.delete(requestKey);
                return;
            }

            // Disable the checkbox during the request
            checkbox.disabled = true;

            // Optimistically update UI if activating
            if (isActive) {
                document.querySelectorAll('input[name="active_status"]').forEach(cb => {
                    if (cb.id !== checkbox.id) {
                        cb.checked = false;
                    }
                });
            }

            // Prepare request data
            const formData = new FormData();
            formData.append('is_active', isActive ? 1 : 0);

            // Send AJAX request
            fetch(`{{ url('running_texts') }}/${id}/toggle-active`, {
                    method: 'PATCH',
                    headers: {
                        'X-CSRF-TOKEN': csrfToken,
                        'Accept': 'application/json',
                    },
                    body: formData
                })
                .then(response => {
                    if (!response.ok) {
                        throw new Error(`HTTP ${response.status}: ${response.statusText}`);
                    }
                    return response.json();
                })
                .then(data => {
                    if (data.success) {
                        // Show success message
                        showMessage(data.message, 'success');

                        // Ensure UI state matches server state
                        checkbox.checked = data.is_active;
                    } else {
                        throw new Error(data.message || 'Unknown error occurred');
                    }
                })
                .catch(error => {
                    console.error('Toggle error:', error);

                    // Revert the checkbox state
                    checkbox.checked = !isActive;

                    // Revert other checkboxes if this was an activation attempt
                    if (isActive) {
                        // We need to restore the previous state - find the previously active one
                        // This is a limitation of optimistic UI updates
                        location.reload(); // Safest approach for this edge case
                        return;
                    }

                    // Show error message
                    const errorMessage = error.message || 'An error occurred while updating status';
                    showMessage(errorMessage, 'error');
                })
                .finally(() => {
                    // Re-enable the checkbox and clean up
                    checkbox.disabled = false;
                    activeRequests.delete(requestKey);
                });
        }

        /**
         * Show message to user
         */
        function showMessage(message, type) {
            // Remove any existing temporary alerts
            const existingAlerts = document.querySelectorAll('.alert-temp');
            existingAlerts.forEach(alert => alert.remove());

            // Create new alert
            const alertClass = type === 'success' ? 'alert-success' : 'alert-danger';
            const iconClass = type === 'success' ? 'fa-check-circle' : 'fa-exclamation-triangle';

            const alertHtml = `
                <div class="alert ${alertClass} alert-dismissible fade show alert-temp" role="alert">
                    <i class="fa ${iconClass} mr-2"></i>
                    ${escapeHtml(message)}
                    <button type="button" class="close" data-dismiss="alert" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
            `;

            // Insert at the top of panel-body
            const panelBody = document.querySelector('.panel-body');
            if (panelBody) {
                panelBody.insertAdjacentHTML('afterbegin', alertHtml);
            }

            // Auto-dismiss after 5 seconds
            setTimeout(() => {
                const tempAlert = document.querySelector('.alert-temp');
                if (tempAlert) {
                    tempAlert.remove();
                }
            }, 5000);
        }

        /**
         * Escape HTML to prevent XSS
         */
        function escapeHtml(unsafe) {
            return unsafe
                .replace(/&/g, "&amp;")
                .replace(/</g, "&lt;")
                .replace(/>/g, "&gt;")
                .replace(/"/g, "&quot;")
                .replace(/'/g, "&#039;");
        }

        /**
         * Confirm delete action
         */
        function confirmDelete(content) {
            const truncatedContent = content.length > 50 ? content.substring(0, 50) + '...' : content;
            return confirm(
                `Are you sure you want to delete this running text?\n\n"${truncatedContent}"\n\nThis action cannot be undone.`
            );
        }

        /**
         * Initialize page
         */
        document.addEventListener('DOMContentLoaded', function() {
            // Auto-dismiss existing alerts after 5 seconds
            const alerts = document.querySelectorAll('.alert:not(.alert-temp)');
            alerts.forEach(function(alert) {
                setTimeout(function() {
                    if (alert.parentNode) {
                        alert.remove();
                    }
                }, 5000);
            });

            // Add loading states to forms
            const forms = document.querySelectorAll('form');
            forms.forEach(form => {
                form.addEventListener('submit', function() {
                    const submitBtn = form.querySelector('button[type="submit"]');
                    if (submitBtn) {
                        submitBtn.disabled = true;
                        const originalText = submitBtn.innerHTML;
                        submitBtn.innerHTML = '<i class="fa fa-spinner fa-spin"></i> Processing...';

                        // Re-enable after 5 seconds as fallback
                        setTimeout(() => {
                            submitBtn.disabled = false;
                            submitBtn.innerHTML = originalText;
                        }, 5000);
                    }
                });
            });
        });
    </script>

    <style>
        .btn-group .btn {
            margin-right: 2px;
        }

        .table td {
            vertical-align: middle;
        }

        .text-truncate {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .alert-temp {
            animation: slideIn 0.3s ease-out;
        }

        .empty-state {
            text-align: center;
            padding: 2rem;
            color: #6c757d;
        }

        .loading {
            opacity: 0.6;
            pointer-events: none;
        }
    </style>
@endsection