@extends('layouts.admin')

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

@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-play-btn fs-5"></i>
            </div>
            <div>
                <h6 class="fw-bold mb-0">Lesson Library</h6>
                <p class="text-secondary mb-0" style="font-size: 0.75rem;">Manage individual video lessons and content delivery.</p>
            </div>
        </div>
        <button class="btn btn-primary px-4 py-2" id="createNewLesson" style="border-radius: 8px; font-weight: 700; font-size: 0.85rem;">
            <i class="bi bi-plus-lg me-2"></i> Add Lesson
        </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">Lesson Name</th>
                        <th class="border-0 small text-uppercase py-3">Chapter</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="lessonForm" name="lessonForm" class="form-horizontal" enctype="multipart/form-data">
                   <input type="hidden" name="lesson_id" id="lesson_id">
                    
                    <div class="mb-3">
                        <label for="name" class="form-label small fw-bold text-secondary">Lesson Name</label>
                        <input type="text" class="form-control" id="name" name="name" placeholder="Enter Lesson Name" required>
                    </div>

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

                    <div class="mb-3">
                        <label for="youtube_url" class="form-label small fw-bold text-secondary">YouTube URL</label>
                        <input type="url" class="form-control" id="youtube_url" name="youtube_url" placeholder="https://www.youtube.com/watch?v=..." required>
                    </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>

                    <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.lessons.index') }}",
        columns: [
            {data: 'DT_RowIndex', name: 'DT_RowIndex'},
            {data: 'name', name: 'name'},
            {data: 'chapter', name: 'chapter'},
            {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>',
    });
    
    $('#createNewLesson').click(function () {
        $('#saveBtn').val("create-lesson");
        $('#lesson_id').val('');
        $('#lessonForm').trigger("reset");
        $('#modelHeading').html("Create New Lesson");
        $('#ajaxModel').modal('show');
    });
    
    $('body').on('click', '.editLesson', function () {
      var lesson_id = $(this).data('id');
      $.get("{{ route('admin.lessons.index') }}" +'/' + lesson_id +'/edit', function (data) {
          $('#modelHeading').html("Edit Lesson");
          $('#saveBtn').val("edit-lesson");
          $('#ajaxModel').modal('show');
          $('#lesson_id').val(data.id_encrypted);
          $('#name').val(data.name);
          $('#chapter_id').val(data.chapter_id);
          $('#youtube_url').val(data.youtube_url);
          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($('#lessonForm')[0]);

        $.ajax({
          url: "{{ route('admin.lessons.store') }}",
          type: "POST",
          data: formData,
          processData: false,
          contentType: false,
          success: function (data) {
              $('#lessonForm').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', '.deleteLesson', function () {
        var lesson_id = $(this).data("id");
        if(confirm("Are You sure want to delete this lesson?")) {
            $.ajax({
                type: "DELETE",
                url: "{{ route('admin.lessons.store') }}"+'/'+lesson_id,
                success: function (data) {
                    table.draw();
                },
                error: function (data) {
                    console.log('Error:', data);
                }
            });
        }
    });
    
  });
</script>
@endpush