using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using Sirenix.OdinInspector;

namespace DDD
{
    public static class RestaurantInteractionSubsystems
    {
        public static Dictionary<InteractionType, Type> TypeToSubsystem = new()
        {
            {InteractionType.RestaurantOrder, typeof(RestaurantOrderInteractionSubsystem)},
            {InteractionType.RestaurantManagement, typeof(RestaurantManagementInteractionSubsystem)}
        };
    }

    
    public class RestaurantInteractionComponent : MonoBehaviour, IInteractable, IInteractionSubsystemOwner
    {
        // Single interaction type
        [ValueDropdown("GetAllInteractionTypes")] 
        [SerializeField] protected InteractionType _interactionType = InteractionType.None;
        [SerializeField] protected InteractionExecutionParameters _executionParameters = new InteractionExecutionParameters(1f);
        [SerializeField] protected InteractionDisplayParameters _displayParameters = new InteractionDisplayParameters("");
        [SerializeField] protected GameFlowState _interactionAvailableFlows;
        [SerializeField] private Transform[] _aiInteractionPoints;
        [SerializeField] private bool autoInitialize = true;

        private Dictionary<InteractionType, IInteractionSubsystemObject> _subsystems = new();

        private void Start()
        {
            if (autoInitialize)
            {
                InitializeInteraction(_interactionType);
            }
        }

        private static IEnumerable GetAllInteractionTypes()
        {
            return System.Enum.GetValues(typeof(InteractionType))
                .Cast<InteractionType>()
                .Where(x => x != InteractionType.All); // All은 제외
        }

        public virtual bool CanInteract()
        {
            bool isInteractionVisible = !IsInteractionHidden();
            bool hasValidSubsystem = true;
            if (HasSubsystem(_interactionType))
            {
                hasValidSubsystem = GetSubsystem(_interactionType).CanInteract();
            }
            return isInteractionVisible && hasValidSubsystem;
        }

        public virtual bool IsInteractionHidden()
        {
            var currentGameFlowState = GameFlowManager.Instance.GameFlowDataSo.CurrentGameState;
            var flowDisabled = (currentGameFlowState & _interactionAvailableFlows) == 0;
            return flowDisabled;
        }

        public virtual bool OnInteracted(IInteractor interactor, ScriptableObject payloadSo = null)
        {
            if (CanInteract() == false)
            {
                return false;
            }
            bool interactionResult = RestaurantInteractionEvents.RestaurantInteraction.RequestInteraction(interactor.GetInteractorGameObject(),
                GetInteractableGameObject(), GetInteractionType(), payloadSo, true);
            if (HasSubsystem(_interactionType))
            {
                interactionResult &= GetSubsystem(_interactionType).OnInteracted(interactor, payloadSo);
            }
            return interactionResult;
        }

        public virtual InteractionType GetInteractionType()
        {
            return _interactionType;
        }

        public GameObject GetInteractableGameObject()
        {
            return gameObject;
        }

        public virtual void InitializeInteraction(InteractionType interactionType)
        {
            _interactionType = interactionType;

            InitializeSubsystems();
        }

        private void InitializeSubsystems()
        {
            // Initialize Interaction Subsystems
            bool hasSubsystemType = RestaurantInteractionSubsystems.TypeToSubsystem.TryGetValue(_interactionType, out var subsystemType);
            if (!hasSubsystemType) return;

            var subsystem = gameObject.GetComponent(subsystemType) as IInteractionSubsystemObject;
            if (subsystem == null)
            {
                subsystem = gameObject.AddComponent(subsystemType) as IInteractionSubsystemObject;
            }
            _subsystems.Add(_interactionType, subsystem);
            subsystem?.InitializeSubsystem();
        }

        private bool HasSubsystem(InteractionType interactionType)
        {
            return _subsystems.ContainsKey(interactionType);
        }

        private IInteractionSubsystemObject GetSubsystem(InteractionType interactionType)
        {
            return _subsystems.GetValueOrDefault(interactionType) as IInteractionSubsystemObject;
        }

        // 새로운 스트럭트 기반 메서드들
        public virtual InteractionExecutionParameters GetExecutionParameters()
        {
            return _executionParameters;
        }

        public virtual InteractionDisplayParameters GetDisplayParameters()
        {
            return _displayParameters;
        }

        // 하위 호환성을 위한 기존 메서드들
        public float GetRequiredHoldTime()
        {
            return _executionParameters.HoldTime;
        }

        public string GetInteractionMessageKey()
        {
            return _displayParameters.MessageKey;
        }

        public Vector3[] GetInteractionPoints()
        {
            if (_aiInteractionPoints == null || _aiInteractionPoints.Length == 0)
            {
                return new Vector3[] { transform.position };
            }

            Vector3[] positions = new Vector3[_aiInteractionPoints.Length];
            for (int i = 0; i < _aiInteractionPoints.Length; i++)
            {
                if (_aiInteractionPoints[i] != null)
                {
                    positions[i] = _aiInteractionPoints[i].position;
                }
                else
                {
                    positions[i] = transform.position;
                }
            }
            return positions;
        }

        public bool TryGetSubsystemObject<T>(out IInteractionSubsystemObject<T> subsystemObject) where T : Enum
        {
            foreach (var interactionSubsystemObject in _subsystems.Values)
            {
                if (interactionSubsystemObject is IInteractionSubsystemObject<T> subsystem)
                {
                    subsystemObject = subsystem;
                    return true;
                }
            }

            subsystemObject = null;
            return false;
        }
    }
}