@extends('layouts.admin')

@section('page_title', 'Manage Chapters')

@section('content')
<div class="card admin-card border-0 shadow-sm" style="border-radius: 12px;">
    <div class="card-header bg-white border-0 py-3 d-flex justify-content-between align-items-center">
        <div class="d-flex align-items-center">
            <div class="bg-primary bg-opacity-10 text-primary rounded-2 p-2 me-3">
                <i class="bi bi-layers fs-5"></i>
            </div>
            <div>
                <h6 class="fw-bold mb-0">Chapter Management</h6>
                <p class="text-secondary mb-0" style="font-size: 0.75rem;">Organize your course curriculum into digestible chapters.</p>
            </div>
        </div>
        <button class="btn btn-primary px-4 py-2" id="createNewChapter" style="border-radius: 8px; font-weight: 700; font-size: 0.85rem;">
            <i class="bi bi-plus-lg me-2"></i> Add Chapter
        </button>
    </div>

    <div class="card-body p-0">
        <div class="table-responsive">
            <table class="table table-hover align-middle data-table w-100 mb-0">
                <thead class="bg-light bg-opacity-50">
                    <tr>
                        <th class="border-0 small text-uppercase py-3 px-4">No</th>
                        <th class="border-0 small text-uppercase py-3">Chapter Name</th>
                        <th class="border-0 small text-uppercase py-3">Course</th>
                        <th class="border-0 small text-uppercase py-3 px-4 text-end" width="200px">Action</th>
                    </tr>
                </thead>
                <tbody>
                </tbody>
            </table>
        </div>
    </div>
</div>

<!-- Modal -->
<div class="modal fade" id="ajaxModel" aria-hidden="true">
    <div class="modal-dialog modal-lg">
        <div class="modal-content admin-card">
            <div class="modal-header border-0 pb-0">
                <h5 class="modal-title fw-bold" id="modelHeading"></h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <div class="modal-body p-4">
                <form id="chapterForm" name="chapterForm" class="form-horizontal" enctype="multipart/form-data">
                   <input type="hidden" name="chapter_id" id="chapter_id">
                    
                    <div class="mb-3">
                        <label for="name" class="form-label small fw-bold text-secondary">Chapter Name</label>
                        <input type="text" class="form-control" id="name" name="name" placeholder="Enter Chapter Name" required>
                    </div>

                    <div class="mb-3">
                        <label for="course_id" class="form-label small fw-bold text-secondary">Course</label>
                        <select name="course_id" id="course_id" class="form-select" required>
                            <option value="" selected disabled>Choose Course...</option>
                            @foreach($courses as $course)
                                <option value="{{ $course->id }}">{{ $course->name }} ({{ $course->standard->name }})</option>
                            @endforeach
                        </select>
                    </div>

                    <div class="row">
                        <div class="col-md-6 mb-3">
                            <label for="price" class="form-label small fw-bold text-secondary">Base Price ($)</label>
                            <input type="number" step="0.01" class="form-control" id="price" name="price" placeholder="0.00">
                        </div>
                        <div class="col-md-6 mb-3">
                            <label for="discount_price" class="form-label small fw-bold text-secondary">Discount Price ($)</label>
                            <input type="number" step="0.01" class="form-control" id="discount_price" name="discount_price" placeholder="0.00">
                        </div>
                    </div>

                    <div class="mb-3">
                        <label class="form-label small fw-bold text-secondary d-block">Thumbnail Source</label>
                        <div class="form-check form-check-inline">
                            <input class="form-check-input" type="radio" name="thumb_mode" id="mode_url" value="url" checked>
                            <label class="form-check-label small" for="mode_url">URL</label>
                        </div>
                        <div class="form-check form-check-inline">
                            <input class="form-check-input" type="radio" name="thumb_mode" id="mode_upload" value="upload">
                            <label class="form-check-label small" for="mode_upload">Upload File</label>
                        </div>
                    </div>

                    <div id="url_input_div" class="mb-4">
                        <label for="thumbnail_url" class="form-label small fw-bold text-secondary">Thumbnail URL</label>
                        <input type="url" class="form-control" id="thumbnail_url" name="thumbnail_url" placeholder="https://example.com/image.jpg">
                    </div>

                    <div id="upload_input_div" class="mb-4 d-none">
                        <label for="thumbnail_file" class="form-label small fw-bold text-secondary">Upload Thumbnail</label>
                        <input type="file" class="form-control" id="thumbnail_file" name="thumbnail_file">
                    </div>

                    <div class="mb-4">
                        <label for="description" class="form-label small fw-bold text-secondary">Chapter Description</label>
                        <textarea class="form-control" id="description" name="description" rows="4" placeholder="Enter chapter details, learning objectives, etc..."></textarea>
                    </div>

                    <button type="submit" class="btn btn-primary w-100 py-2 fw-bold" id="saveBtn" value="create">Save Changes</button>
                </form>
            </div>
        </div>
    </div>
</div>

@endsection

@push('scripts')
<script type="text/javascript">
  $(function () {
    
    $.ajaxSetup({
        headers: {
            'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
        }
    });
    
    var table = $('.data-table').DataTable({
        processing: true,
        serverSide: true,
        ajax: "{{ route('admin.chapters.index') }}",
        columns: [
            {data: 'DT_RowIndex', name: 'DT_RowIndex'},
            {data: 'name', name: 'name'},
            {data: 'course', name: 'course'},
            {data: 'action', name: 'action', orderable: false, searchable: false},
        ],
        dom: '<"d-flex justify-content-between mb-3"lf>rt<"d-flex justify-content-between mt-3"ip>',
    });
    
    $('#createNewChapter').click(function () {
        $('#saveBtn').val("create-chapter");
        $('#chapter_id').val('');
        $('#chapterForm').trigger("reset");
        $('#modelHeading').html("Create New Chapter");
        $('#ajaxModel').modal('show');
    });
    
    $('body').on('click', '.editChapter', function () {
      var chapter_id = $(this).data('id');
      $.get("{{ route('admin.chapters.index') }}" +'/' + chapter_id +'/edit', function (data) {
          $('#modelHeading').html("Edit Chapter");
          $('#saveBtn').val("edit-chapter");
          $('#ajaxModel').modal('show');
          $('#chapter_id').val(data.id_encrypted);
          $('#name').val(data.name);
          $('#course_id').val(data.course_id);
          $('#price').val(data.price);
          $('#discount_price').val(data.discount_price);
          $('#description').val(data.description);
          if (data.thumbnail && (data.thumbnail.startsWith('http') || data.thumbnail.startsWith('https'))) {
              $('#thumbnail_url').val(data.thumbnail);
              $('#mode_url').prop('checked', true).trigger('change');
          } else {
              $('#thumbnail_url').val(data.thumbnail);
              $('#mode_url').prop('checked', true).trigger('change');
          }
      })
    });
    
    $('input[name="thumb_mode"]').change(function() {
        if ($(this).val() == 'url') {
            $('#url_input_div').removeClass('d-none');
            $('#upload_input_div').addClass('d-none');
        } else {
            $('#url_input_div').addClass('d-none');
            $('#upload_input_div').removeClass('d-none');
        }
    });

    $('#saveBtn').click(function (e) {
        e.preventDefault();
        $(this).html('Saving...');
    
        var formData = new FormData($('#chapterForm')[0]);

        $.ajax({
          url: "{{ route('admin.chapters.store') }}",
          type: "POST",
          data: formData,
          processData: false,
          contentType: false,
          success: function (data) {
              $('#chapterForm').trigger("reset");
              $('#ajaxModel').modal('hide');
              $('#url_input_div').removeClass('d-none');
              $('#upload_input_div').addClass('d-none');
              table.draw();
              $('#saveBtn').html('Save Changes');
          },
          error: function (data) {
              console.log('Error:', data);
              $('#saveBtn').html('Save Changes');
              alert('Error saving data.');
          }
      });
    });
    
    $('body').on('click', '.deleteChapter', function () {
        var chapter_id = $(this).data("id");
        if(confirm("Are You sure want to delete this chapter?")) {
            $.ajax({
                type: "DELETE",
                url: "{{ route('admin.chapters.store') }}"+'/'+chapter_id,
                success: function (data) {
                    table.draw();
                },
                error: function (data) {
                    console.log('Error:', data);
                }
            });
        }
    });
    
  });
</script>
@endpush