using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Windows;

namespace XP.ImageProcessing.RoiControl.Models
{
    /// <summary>
    /// ROI形状类型
    /// </summary>
    public enum ROIType
    {
        Polygon
    }

    /// <summary>
    /// ROI基类
    /// </summary>
    public abstract class ROIShape : INotifyPropertyChanged
    {
        private bool _isSelected;
        private string _id = Guid.NewGuid().ToString();
        private string _color = "Red";

        public string Id
        {
            get => _id;
            set { _id = value; OnPropertyChanged(); }
        }

        public bool IsSelected
        {
            get => _isSelected;
            set { _isSelected = value; OnPropertyChanged(); }
        }

        public string Color
        {
            get => _color;
            set { _color = value; OnPropertyChanged(); }
        }

        public abstract ROIType ROIType { get; }

        public event PropertyChangedEventHandler? PropertyChanged;

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

    /// <summary>
    /// 多边形ROI
    /// </summary>
    public class PolygonROI : ROIShape
    {
        private ObservableCollection<Point> _points = new ObservableCollection<Point>();

        public override ROIType ROIType => ROIType.Polygon;

        public ObservableCollection<Point> Points
        {
            get => _points;
            set { _points = value; OnPropertyChanged(); }
        }

        /// <summary>
        /// 用于JSON序列化的Points列表（不参与UI绑定）
        /// </summary>
        [System.Text.Json.Serialization.JsonPropertyName("PointsList")]
        public List<Point> PointsList
        {
            get => new List<Point>(_points);
            set
            {
                _points = new ObservableCollection<Point>(value ?? new List<Point>());
                OnPropertyChanged(nameof(Points));
            }
        }
    }
}