using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Sinvo.EplanHpD.Plugin.WPFUI.Utils
{
    /// <summary>
    /// 消息发送与接收
    /// </summary>
    public class MessageSend
    {
        private static readonly Dictionary<string, List<Action<object>>> _subscribers = new();

        public static void Subscribe(string message, Action<object> callback)
        {
            if (!_subscribers.ContainsKey(message))
            {
                _subscribers[message] = new List<Action<object>>();
            }
            _subscribers[message].Add(callback);
        }

        public static void Unsubscribe(string message, Action<object> callback)
        {
            if (_subscribers.ContainsKey(message))
            {
                _subscribers[message].Remove(callback);
                if (_subscribers[message].Count == 0)
                {
                    _subscribers.Remove(message);
                }
            }
        }
        public static void Unsubscribe(string message)
        {
            if (_subscribers.ContainsKey(message))
            {
                _subscribers.Remove(message);
            }
        }

        public static void Publish(string message, object parameter = null)
        {
            if (_subscribers.ContainsKey(message))
            {
                foreach (var callback in _subscribers[message])
                {
                    callback(parameter);
                }
            }
        }
    }
}