using System.Collections.ObjectModel;
using Prism.Mvvm;

namespace XP.Hardware.PLC.Sentry.ViewModels
{
    /// <summary>
    /// 信号分组 ViewModel，对应一个 Tab 页 | Signal group ViewModel, corresponds to one Tab page
    /// </summary>
    public class SignalGroupViewModel : BindableBase
    {
        private string _groupId = string.Empty;
        private int _dbNumber;
        private ObservableCollection<SignalRowViewModel> _signals = new();

        /// <summary>
        /// 分组 ID | Group ID
        /// </summary>
        public string GroupId
        {
            get => _groupId;
            set => SetProperty(ref _groupId, value ?? string.Empty);
        }

        /// <summary>
        /// DB 块号 | DB block number
        /// </summary>
        public int DBNumber
        {
            get => _dbNumber;
            set => SetProperty(ref _dbNumber, value);
        }

        /// <summary>
        /// 标签页标题，格式 "{GroupId} [DB{DBNumber}]" | Tab header, format "{GroupId} [DB{DBNumber}]"
        /// </summary>
        public string TabHeader => $"{GroupId} [DB{DBNumber}]";

        /// <summary>
        /// 该分组下的信号行集合 | Signal row collection under this group
        /// </summary>
        public ObservableCollection<SignalRowViewModel> Signals
        {
            get => _signals;
            set => SetProperty(ref _signals, value ?? new ObservableCollection<SignalRowViewModel>());
        }
    }
}