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

namespace AI.Models.SpecialMessages
{
    /// <summary>
    /// 工作流状态特殊消息 - 在聊天流中显示工作流进度
    /// </summary>
    public class WorkflowStatusMessage : ISpecialMessage, INotifyPropertyChanged
    {
        private string _title = "工作流进度";
        private ObservableCollection<WorkflowStepModel> _steps = new();

        /// <summary>
        /// 消息唯一标识符
        /// </summary>
        public string Id { get; set; } = Guid.NewGuid().ToString();

        /// <summary>
        /// 类型名称
        /// </summary>
        public string TypeName => "WorkflowStatus";

        /// <summary>
        /// 需要实时更新
        /// </summary>
        public bool IsLive => true;

        /// <summary>
        /// 工作流标题
        /// </summary>
        public string Title
        {
            get => _title;
            set => SetProperty(ref _title, value);
        }

        /// <summary>
        /// 工作流步骤列表
        /// </summary>
        public ObservableCollection<WorkflowStepModel> Steps
        {
            get => _steps;
            set => SetProperty(ref _steps, value);
        }

        public event PropertyChangedEventHandler? PropertyChanged;

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

        protected bool SetProperty<T>(ref T field, T value, [CallerMemberName] string? propertyName = null)
        {
            if (EqualityComparer<T>.Default.Equals(field, value))
            {
                return false;
            }

            field = value;
            OnPropertyChanged(propertyName);
            return true;
        }
    }
}