using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
namespace BITKit.SubSystems.Quest
{
    public class QuestSystem
    {
        public enum State
        {
            None,
            InProcess,
            Complete,
            Canceled,
        }
        public class Info
        {
            public static implicit operator Guid(Info self)
            {
                return self.id;
            }
            public static implicit operator string(Info self)
            {
                return self.name;
            }
            internal Info(string name, string description)
            {
                id = Guid.NewGuid();
                this.name = name;
                this.description = description;
            }
            public readonly Guid id;
            public State state { get; internal set; }
            public string name { get; internal set; }
            public string description { get; internal set; }
            //public List<Func<bool>> condition = new();
        }
        public static Dictionary<Guid, Info> quests { get; private set; } = new();
        public static event Action<Info> OnQuestCreated;
        public static event Action<Info> OnQuestCompleted;
        public static event Action<Info> OnQuestCanceled;
        public static Info Create(string name = "New Quest", string description = "Quest in progress")
        {
            Info info = new(name, description);
            info.state = State.InProcess;
            quests.Add(info, info);
            OnQuestCreated?.Invoke(info);
            return info;
        }
        public static void Complete(Info quest)
        {
            quest.state = State.Complete;
            OnQuestCompleted?.Invoke(quest);
        }
        public static void Cancel(Info quest)
        {
            if (quests.ContainsKey(quest.id))
            {
                quests.Remove(quest.id);
                quest.state = State.Canceled;
                OnQuestCanceled?.Invoke(quest);
            }
        }
        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
        static void Reload()
        {
            quests.Clear();
            OnQuestCreated = null;
            OnQuestCompleted = null;
        }
    }
}