@extends('layouts.app')
@section('content')
    <div class="row">
        <!-- List Section (First Column) -->
        <div class="col-md-6 col-12 mb-4">
            <div class="card">
                <div class="card-header">
                    <h2>Instructions <small>List</small></h2>
                </div>
                <div class="card-body table-responsive">
                    <table id="datatableInstructions" class="table table-striped table-bordered ">
                        <thead>
                            <tr>
                                <th>Title</th>
                                <th>Background</th>
                                <th>Day</th>
                                <th>Num</th>
                                <th>Active</th>
                                <th>Action</th>
                            </tr>
                        </thead>

                        <tbody>
                            @foreach ($instructions as $instruction)
                                <tr>
                                    <td>{{ $instruction->vTitle }}</td>
                                    <td>
                                        @if ($instruction->vBackgroundImg)
                                            <a data-fancybox="gallery"
                                                data-src="{{ config('constants.backgroundimg.url') . ltrim($instruction->vBackgroundImg, '/') }}"
                                                data-caption="{{ $instruction->vTitle }}"
                                                class="position-relative d-inline-block"
                                                title="Click to view full size"><img
                                                    src="{{ config('constants.backgroundimg.url') . ltrim($instruction->vBackgroundImg, '/') }}"
                                                    width="{{ config('constants.backgroundimg.thumb_width') }}"
                                                    height="{{ config('constants.backgroundimg.thumb_height') }}"
                                                    alt="{{ $instruction->vTitle }}" class="img-fluid"
                                                    onerror="this.style.display='none'; this.parentElement.textContent='No Image';"></a>
                                        @else
                                            No Image
                                        @endif
                                    </td>
                                    <td>
                                        @if ($instruction->day)
                                            {{ $instruction->day->vDay }}
                                        @endif
                                    </td>
                                    <td>{{ $instruction->Num }}</td>
                                    <td>
                                        <input type="hidden" class="active-toggle-hidden" value="0"
                                               data-id="{{ $instruction->iInstructionID }}">
                                        <input
                                            {{Auth::guard('admin')->user()->bContent == 1 ? '':'disabled'}} type="checkbox"
                                            class="js-switch active-toggle" data-id="{{ $instruction->iInstructionID }}"
                                            value="1" {{ $instruction->bActive ? 'checked' : '' }} />
                                    </td>
                                    <td>
                                        @if (Auth::guard('admin')->user()->bContent == 1)
                                            <button type="button" class="btn btn-info btn-xs text-nowrap edit-instruction"
                                                data-id="{{ $instruction->iInstructionID }}"
                                                data-dayid="{{ $instruction->iDayID }}"
                                                data-title="{{ $instruction->vTitle }}"
                                                data-bgimg="{{ $instruction->vBackgroundImg ? config('constants.backgroundimg.url') . ltrim($instruction->vBackgroundImg, '/') : '' }}"
                                                data-num="{{ $instruction->Num }}">
                                                <i class="fa fa-pencil"></i> Edit
                                            </button>
                                            <button type="button"
                                                class="btn btn-danger btn-xs text-nowrap instruction-delete"
                                                data-title="{{ $instruction->vTitle }}"
                                                data-id="{{ $instruction->iInstructionID }}">
                                                <i class="fa fa-trash-o"></i> Delete
                                            </button>
                                        @endif
                                    </td>
                                </tr>
                            @endforeach
                        </tbody>
                    </table>
                </div>
            </div>
        </div>

        <!-- Form Section (Second Column) -->
        <div class="col-md-6 col-12">
            <div class="card">
                <div class="card-header d-flex justify-content-between align-items-center">
                    <h2 id="form-title">{{ isset($selectedInstruction) ? 'Edit' : 'Create' }} <small>Instruction</small>
                    </h2>
                </div>
                <div class="card-body" id="createInstructionForm">
                    <form id="frminstruction" name="frminstruction" method="post"
                        action="{{ route('instruction.store', ['program_id' => $programId]) }}"
                        enctype="multipart/form-data">
                        @csrf
                        <input type="hidden" name="_method" id="form-method" value="POST">
                        <input type="hidden" name="instruction_id" id="instruction_id" value="">
                        <input type="hidden" id="form-mode" value="create">

                        <div class="form-group row">
                            <label class="col-md-3 col-form-label">Day</label>
                            <div class="col-md-9">
                                <select id="iDayID" name="iDayID" class="form-control">
                                    <option value="0">Select Day</option>
                                    @php
                                        $activeDays = $days->where('bActive', 1);
                                        $inactiveDays = $days->where('bActive', 0);
                                    @endphp
                                    @if ($activeDays->isNotEmpty())
                                        <optgroup label="Active Days">
                                            @foreach ($activeDays as $tDay)
                                                <option value="{{ $tDay->iDayID }}"
                                                    {{ old('iDayId') == $tDay->iDayID ? 'selected' : '' }}>
                                                    {{ $tDay->vDay }} - {{ $tDay->vName }}
                                                </option>
                                            @endforeach
                                        </optgroup>
                                    @endif

                                    @if ($inactiveDays->isNotEmpty())
                                        <optgroup label="Inactive Days">
                                            @foreach ($inactiveDays as $tDay)
                                                <option value="{{ $tDay->iDayID }}"
                                                    {{ old('iDayId') == $tDay->iDayID ? 'selected' : '' }}>
                                                    {{ $tDay->vDay }} - {{ $tDay->vName }}
                                                </option>
                                            @endforeach
                                        </optgroup>
                                    @endif
                                </select>
                                @error('iDayID')
                                    <span class="text-danger">{{ $message }}</span>
                                @enderror
                            </div>
                        </div>

                        <div class="form-group row">
                            <label class="col-md-3 col-form-label">Title<span class="text-danger asterisk">*</span></label>
                            <div class="col-md-9">
                                <input id="vTitle" name="vTitle" type="text" class="form-control" placeholder="Title"
                                    value="{{ old('vTitle') }}" required>
                                @error('vTitle')
                                    <span class="text-danger">{{ $message }}</span>
                                @enderror
                            </div>
                        </div>

                        <div class="form-group row">
                            <label class="col-md-3 col-form-label">Background Image<span
                                    class="text-danger asterisk">*</span></label>
                            <div class="col-md-9">
                                <input type="file" id="vBackgroundImg" name="vBackgroundImg" class="form-control-file"
                                    accept="image/jpeg" required>
                                <a id="vBackgroundImgLink" href="#" target="_blank" class="pull-right d-none">Image
                                    Link</a>
                                <small class="form-text text-muted">Must be under 100KB. Only jpg format is
                                    allowed.</small>
                                <span id="vBackgroundImgError" class="text-danger" style="display:none;"></span>
                                @error('vBackgroundImg')
                                    <span class="text-danger">{{ $message }}</span>
                                @enderror
                            </div>
                        </div>

                        <div class="form-group row">
                            <label class="col-md-3 col-form-label">Num<span class="text-danger asterisk">*</span></label>
                            <div class="col-md-9">
                                <input id="Num" name="Num" type="number" class="form-control" placeholder="Num"
                                    value="{{ old('Num') }}" required>
                                @error('Num')
                                    <span class="text-danger">{{ $message }}</span>
                                @enderror
                            </div>
                        </div>

                        <hr>
                        <div class="form-group row">
                            <div class="col-md-9 offset-md-3">
                                @if (Auth::guard('admin')->user()->bContent == 1)
                                    <button type="button" id="btn-reset" class="btn btn-secondary">Cancel</button>
                                    <button type="submit" id="btn-submit" class="btn btn-success">Create</button>
                                @endif
                            </div>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>

    <!-- Delete Confirmation Modal -->
    <div class="modal fade" id="deleteModal" tabindex="-1" role="dialog" aria-labelledby="deleteModalLabel"
        aria-hidden="true">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="deleteModalLabel">Confirm Delete</h5>
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
                <div class="modal-body">
                    Are you sure you want to delete <span id="instructionTitle"></span>?
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-dismiss="modal">Keep</button>
                    <form id="deleteForm" method="POST">
                        @csrf
                        @method('DELETE')
                        <button type="submit" class="btn btn-danger">Delete</button>
                    </form>
                </div>
            </div>
        </div>
    </div>
@endsection

@push('scripts')
    <script>
        // Wait for the plugins to be loaded
        document.addEventListener('plugins-loaded', function() {
            initializeComponents();
        });

        // Fallback in case the event doesn't fire
        setTimeout(function() {
            initializeComponents();
        }, 2000);

        function initializeComponents() {
            // Make this function idempotent: prevent double-initialization which can
            // attach duplicate event handlers (causing handlers to run twice).
            if (initializeComponents._initialized) return;
            initializeComponents._initialized = true;

            // Check if jQuery is properly loaded
            if (window.jQuery) {
                // Initialize DataTable
                if (!$.fn.DataTable.isDataTable('#datatableInstructions')) {
                    $("#datatableInstructions").DataTable({
                        "pageLength": 50,
                        "order": [
                            [2, "asc"],
                            [3, "asc"]
                        ],
                        columnDefs: [{
                            targets: '_all',
                            orderSequence: ['asc', 'desc']
                        }],
                    });
                }

                validateFileSize('vBackgroundImg', 100, 'vBackgroundImgError', ['image/jpeg']);

                // Edit button functionality (use event delegation for DataTables pagination)
                $('#datatableInstructions').on('click', '.edit-instruction', function() {
                    // Update form title
                    $('#form-title').html('Edit <small>Instruction</small>');
                    $('#form-mode').val('edit');

                    // Get data attributes
                    const id = $(this).data('id');
                    const dayId = $(this).data('dayid');
                    const title = $(this).data('title');
                    const bgImg = $(this).data('bgimg');
                    const num = $(this).data('num');

                    // Change form to PUT method
                    $('#form-method').val('PUT');
                    $('#instruction_id').val(id);

                    // Update form action URL
                    const updateUrl = "{{ route('instruction.index', $programId) }}/" + id;
                    $('#frminstruction').attr('action', updateUrl);

                    // Set form values
                    $('#iDayID').val(dayId);
                    $('#vTitle').val(title);
                    if (bgImg) {
                        $('#vBackgroundImgLink').attr('href', bgImg).removeClass('d-none');
                        $('#vBackgroundImg').attr('required', false);
                    } else {
                        $('#vBackgroundImgLink').attr('href', '#').addClass('d-none');
                        $('#vBackgroundImg').attr('required', true);
                    }
                    $('#Num').val(num);

                    // Change submit button text
                    $('#btn-submit').text('Save Changes');
                    // Scroll to form and focus
                    $('#createInstructionForm')[0].scrollIntoView({
                        behavior: 'smooth'
                    });
                });

                // Reset button functionality
                $('#btn-reset').off('click').on('click', function() {
                    // Reset form to create mode
                    resetForm();
                });

                function resetForm() {
                    // Reset form title
                    $('#form-title').html('Create <small>Instruction</small>');
                    $('#form-mode').val('create');

                    // Reset form method and action
                    $('#form-method').val('POST');
                    $('#instruction_id').val('');
                    $('#frminstruction').attr('action', "{{ route('instruction.store', ['program_id' => $programId]) }}");
                    document.querySelectorAll('.text-danger:not(.asterisk)').forEach(function(element) {
                        element.style.display = 'none';
                    });

                    // Clear form values
                    $('#iDayID').val('0');
                    $('#vTitle').val('');
                    $('#vBackgroundImg').val('');
                    $('#vBackgroundImgLink').attr('href', '#').addClass('d-none');
                    $('#Num').val('0');

                    // Reset submit button text
                    $('#btn-submit').text('Create');
                }

                // Set up delete confirmation modal (use event delegation for DataTables pagination)
                $('#datatableInstructions').on('click', '.instruction-delete', function() {
                    const id = $(this).data('id');
                    const title = $(this).data('title');
                    $('#instructionTitle').text(title);
                    $('#deleteForm').attr('action', "{{ route('instruction.index', $programId) }}/" + id);
                    $('#deleteModal').modal('show');
                });
                // Toggle active status via AJAX (use event delegation for DataTables pagination)
                $('#datatableInstructions').on('change', '.active-toggle', function(e) {
                    const $checkbox = $(this);

                    if ($checkbox.data('loading')) {
                        e.preventDefault();
                        e.stopImmediatePropagation();
                        return false;
                    }
                    $checkbox.data('loading', true);

                    const id = $checkbox.data('id');
                    const isChecked = $checkbox.prop('checked');
                    const $switchWrapper = $checkbox.next('.switchery');

                    if ($switchWrapper.length) {
                        $switchWrapper.hide();
                        $switchWrapper.after('<i class="fa fa-spinner fa-spin text-muted switch-spinner" data-id="' + id + '"></i>');
                    }

                    $.ajax({
                        url: "{{ route('instruction.activeToggle', ['program_id' => $programId, 'id' => '__ID__']) }}".replace('__ID__', id),
                        type: 'POST',
                        headers: {
                            'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
                        },
                        // Send the desired final state so the endpoint is idempotent
                        data: { bActive: isChecked ? 1 : 0 },
                        dataType: 'json',
                        success: function(response) {
                            if (response.success) {
                                $checkbox.prop('checked', response.bActive ? true : false);
                                showNotification('Instruction status updated successfully', 'success');
                            } else {
                                $checkbox.prop('checked', !isChecked);
                                showNotification('Unable to update instruction status', 'danger');
                            }
                        },
                        error: function(xhr, status, error) {
                            console.error('Error toggling instruction status:', error);
                            $checkbox.prop('checked', !isChecked);
                            showNotification('Error updating instruction status. Please try again.', 'danger');
                        },
                        complete: function() {
                            $checkbox.data('loading', false);
                            $('.switch-spinner[data-id="' + id + '"]').remove();
                            // Rebuild Switchery so the visual switch matches the checkbox's
                            // current checked state (reverts the toggle on failure/error).
                            refreshSwitchery($checkbox[0]);
                        }
                    });
                });

                // `showNotification` is defined globally in resources/js/app.js.

                // Initialize Fancybox
                Fancybox.bind("[data-fancybox]", {
                    // Custom options if needed
                });
            } else {
                console.error('jQuery is not loaded properly');
            }
        }
    </script>
@endpush