using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace AI.Models.Form
{
    /// <summary>
    /// 多选项条目，用于绑定 CheckBox 与 FormFieldEntry.SelectedValues 同步
    /// </summary>
    public class MultiSelectOptionItem : INotifyPropertyChanged
    {
        private readonly FormFieldEntry _entry;
        private bool _isSelected;

        public string Option { get; }

        public bool IsSelected
        {
            get => _isSelected;
            set
            {
                if (_isSelected == value) return;
                _isSelected = value;
                if (value)
                {
                    if (!_entry.SelectedValues.Contains(Option))
                        _entry.SelectedValues.Add(Option);
                }
                else
                {
                    _entry.SelectedValues.Remove(Option);
                }
                OnPropertyChanged();
            }
        }

        public MultiSelectOptionItem(FormFieldEntry entry, string option, bool isSelected = false)
        {
            _entry = entry;
            Option = option;
            _isSelected = isSelected;
        }

        public event PropertyChangedEventHandler? PropertyChanged;
        protected void OnPropertyChanged([CallerMemberName] string? propertyName = null) =>
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}