using System;
using Escape_Room_Engine.Engine.Scripts.Utilities;
using NaughtyAttributes;

namespace Escape_Room_Engine.Engine.Scripts.Modules
{
    public enum DoorEventType
    {
        Locked, Unlocked
    }
    
    public delegate void DoorEventHandler(DoorModule source, DoorEventType e);
    
    public class DoorState : ModuleState
    {
        public event DoorEventHandler DoorEvent;

        private new DoorModule Module { get; set; }
        public bool Unlocked
        {
            get => _unlocked;
            private set
            {
                var type =
                    !_unlocked && value ? Some<DoorEventType>.Of(DoorEventType.Unlocked)
                    : _unlocked && !value ? Some<DoorEventType>.Of(DoorEventType.Locked)
                    : None<DoorEventType>.New();
                _unlocked = value;
                type.Match(some: OnDoorEvent);
            }
        }

        private bool _unlocked;

        private void OnDoorEvent(DoorEventType type)
        {
            Logger.Log($"{Module} has been {type}", LogType.PuzzleFlow);
            
            DoorEvent?.Invoke(Module, type);
        }

        public override void SetModule(Module module)
        {
            if (module is DoorModule doorModule)
            {
                Module = doorModule;
            }
            else
            {
                throw new Exception("Tried to set wrong type of module.");
            }
        }

        [Button(enabledMode: EButtonEnableMode.Playmode)]
        internal void Unlock()
        {
            Unlocked = true;
        }

        [Button(enabledMode: EButtonEnableMode.Playmode)]
        internal void Lock()
        {
            Unlocked = false;
        }
    }
}