using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using KairoEngine.Core;

namespace KairoEngine.CharacterSystem
{
    public static class RequestEventExtensions
    {
        public static Dictionary<string, System.Func<CharacterController>> list = new Dictionary<string, System.Func<CharacterController>>();
        
        public static void Bind(this RequestEvents e, string title, System.Func<CharacterController> listener)
        {
            System.Func<CharacterController> action = null;
            if (list.TryGetValue(title, out action) == false)
            {
                action += listener;
                list.Add(title, action);
            }
        }

        public static void Unbind(this RequestEvents e, string title, System.Func<CharacterController> listener)
        {
            System.Func<CharacterController> action = null;
            if (list.TryGetValue(title, out action))
            {
                action -= listener;
                list.Remove(title);
            }
        }

        public static EventResponse<CharacterController> GetCharacterController(this RequestEvents e, string title)
        {
            System.Func<CharacterController> action = null;
            EventResponse<CharacterController> response = new EventResponse<CharacterController>();
            if (list.TryGetValue(title, out action))
            {
                if(action != null) 
                {
                    CharacterController result = action();
                    response.value = result;
                    if(response.value == null) response.status = EventResponseStatus.EmptyResponse;
                    else response.status = EventResponseStatus.OK;
                }
            }
            else response.status = EventResponseStatus.NotFound;
            return response;
        }
    }
}