using System.Windows;
using System.Windows.Media;

namespace Plugins.Vpp.ViewModels
{
    /// <summary>
    /// VppWindow（画面框）的 ViewModel：
    /// 标题（画面名称）、状态圆点颜色（OK 绿 / NG 红 / 无灰）与圆点显隐。
    /// View（VppWindow.xaml）通过绑定消费；引擎接口（SetFrameCaption 等）由 View 转发给本 VM。
    /// </summary>
    public class VppWindowViewModel : TeamAAS.BindableBase
    {
        private int _number;
        /// <summary>画面框编号（1 起，构造时固定）</summary>
        public int Number
        {
            get => _number;
            set => SetProperty(ref _number, value);
        }

        private string _title = "画面";
        /// <summary>顶部标题栏文字（画面名称）</summary>
        public string Title
        {
            get => _title;
            set => SetProperty(ref _title, string.IsNullOrWhiteSpace(value) ? $"画面 {Number}" : value);
        }

        private Brush _statusBrush = Brushes.Gray;
        /// <summary>状态圆点颜色（OK=绿 / NG=红 / 无=灰）</summary>
        public Brush StatusBrush
        {
            get => _statusBrush;
            set => SetProperty(ref _statusBrush, value);
        }

        private bool _showDot;
        /// <summary>状态圆点是否显示（产品属性里按画面配置，主页面加载时应用）</summary>
        public bool ShowDot
        {
            get => _showDot;
            set
            {
                if (SetProperty(ref _showDot, value))
                    RaisePropertyChanged(nameof(DotVisibility));
            }
        }

        /// <summary>圆点可见性（由 ShowDot 派生）</summary>
        public Visibility DotVisibility => _showDot ? Visibility.Visible : Visibility.Collapsed;

        public VppWindowViewModel(int number)
        {
            Number = number;
            _title = $"画面 {number}";
        }
    }
}