using UnityEngine;
using System.Collections.Generic;
using Sirenix.OdinInspector;
using PixelCrushers.DialogueSystem;
using PixelCrushers.QuestMachine; // Required
using Invector.vCharacterController.vActions; 
using UnityEngine.Events;

namespace Beyond
{
    [AddComponentMenu("Beyond/Quests/Generic Quest Trigger")]
    [RequireComponent(typeof(bTriggerGenericAction))] 
    public class GenericQuestTrigger : MonoBehaviour
    {
        #region --- ODIN-POWERED INSPECTOR ---

        [Title("Invector Trigger Link")]
        [InfoBox("Links into bTriggerGenericAction to add quest/dialogue functionality.")]
        [Required("A bTriggerGenericAction component is required.")]
        [OnInspectorInit("FindTriggerReference")]
        public bTriggerGenericAction invectorTrigger;

        [Title("Quest and Dialogue Actions")]
        [ListDrawerSettings(Expanded = true, DraggableItems = true, NumberOfItemsPerPage = 10)]
        public List<TriggeredAction> actions = new List<TriggeredAction>();

        #endregion

        private GameObject _lastInteractor;
        
        private void FindTriggerReference()
        {
            if (invectorTrigger == null) invectorTrigger = GetComponent<bTriggerGenericAction>();
        }

        #region --- CORE LOGIC ---
        
        private void Start()
        {
            if (invectorTrigger == null)
            {
                this.enabled = false;
                return;
            }
            
            // Subscribe to Invector Events
            invectorTrigger.OnPressActionInput.AddListener(() => HandleEvent(TriggerEventType.OnPressActionInput, _lastInteractor));
            invectorTrigger.OnStartAnimation.AddListener(() => HandleEvent(TriggerEventType.OnStartAnimation, _lastInteractor));
            invectorTrigger.OnEndAnimation.AddListener(() => HandleEvent(TriggerEventType.OnEndAnimation, _lastInteractor));
            
            invectorTrigger.OnPlayerEnter.AddListener(HandlePlayerEnter);
            invectorTrigger.OnPlayerExit.AddListener(HandlePlayerExit);
            invectorTrigger.OnValidate.AddListener((interactor) => HandleEvent(TriggerEventType.OnValidate, interactor));
            invectorTrigger.OnInvalidate.AddListener((interactor) => HandleEvent(TriggerEventType.OnInvalidate, interactor));

            if (DialogueManager.instance != null) DialogueManager.instance.conversationEnded += OnConversationEnded;
        }

        private void OnDisable()
        {
            if (DialogueManager.instance != null) DialogueManager.instance.conversationEnded -= OnConversationEnded;
            
            if (invectorTrigger != null)
            {
                invectorTrigger.OnPressActionInput.RemoveAllListeners();
                invectorTrigger.OnStartAnimation.RemoveAllListeners();
                invectorTrigger.OnEndAnimation.RemoveAllListeners();
                invectorTrigger.OnPlayerEnter.RemoveListener(HandlePlayerEnter);
                invectorTrigger.OnPlayerExit.RemoveListener(HandlePlayerExit);
            }
        }
        
        private void HandlePlayerEnter(GameObject interactor)
        {
            _lastInteractor = interactor;
            HandleEvent(TriggerEventType.OnPlayerEnter, interactor);
        }
        
        private void HandlePlayerExit(GameObject interactor)
        {
            HandleEvent(TriggerEventType.OnPlayerExit, interactor);
            _lastInteractor = null;
        }

        private void OnConversationEnded(Transform actor)
        {
            if (_lastInteractor != null && actor.gameObject == _lastInteractor)
            {
                HandleEvent(TriggerEventType.OnConversationEnd, actor.gameObject);
            }
        }

        private void HandleEvent(TriggerEventType eventType, GameObject interactor)
        {
            foreach (var action in actions)
            {
                if (action.triggerEvent == eventType)
                {
                    // 1. Check Dialogue System (Lua)
                    bool dsConditionMet = action.condition == null || action.condition.IsTrue(interactor?.transform);
                    
                    // 2. Check Quest Machine (Synchronous State Check)
                    bool qmConditionMet = true;
                    if (action.questRequirements != null && action.questRequirements.Count > 0)
                    {
                        foreach (var req in action.questRequirements)
                        {
                            if (!req.IsMet())
                            {
                                qmConditionMet = false;
                                break;
                            }
                        }
                    }

                    if (dsConditionMet && qmConditionMet)
                    {
                        PerformAction(action, interactor);
                    }
                }
            }
        }

        private void PerformAction(TriggeredAction action, GameObject interactor)
        {
            var actorTransform = interactor?.transform;

            switch (action.actionType)
            {
                case ActionType.StartConversation:
                    if (!string.IsNullOrEmpty(action.conversation))
                    {
                        Transform conversant = action.conversant != null ? action.conversant : this.transform;
                        DialogueManager.StartConversation(action.conversation, actorTransform, conversant);
                    }
                    break;
                    
                case ActionType.ExecuteLua:
                    if (!string.IsNullOrEmpty(action.luaCode)) Lua.Run(action.luaCode, true);
                    break;
                    
                case ActionType.SendQuestMachineMessage:
                    if (!string.IsNullOrEmpty(action.questMachineMessage)) QuestMachineMessages.SendCompositeMessage(this, action.questMachineMessage);
                    break;
                    
                case ActionType.SetQuestState:
                    if (!string.IsNullOrEmpty(action.questID)) QuestMachine.SetQuestState(action.questID, action.questState);
                    break;
                    
                case ActionType.SetQuestNodeState:
                    if (!string.IsNullOrEmpty(action.questID) && !string.IsNullOrEmpty(action.questNodeID)) QuestMachine.SetQuestNodeState(action.questID, action.questNodeID, action.questNodeState);
                    break;
                    
                case ActionType.InvokeUnityEvent:
                    action.onExecute?.Invoke();
                    break;
            }
        }
        
        #endregion
    }

    #region --- Definitions ---

    public enum TriggerEventType
    {
        OnPlayerEnter, OnPlayerExit, OnValidate, OnInvalidate, OnPressActionInput, OnStartAnimation, OnEndAnimation, OnConversationEnd
    }

    public enum ActionType
    {
        StartConversation, ExecuteLua, SendQuestMachineMessage, SetQuestState, SetQuestNodeState, InvokeUnityEvent
    }
    
   

    [System.Serializable]
    public class TriggeredAction
    {
        [HorizontalGroup("Top", 120)]
        [BoxGroup("Top/Trigger", showLabel: false)]
        [EnumToggleButtons, HideLabel]
        public TriggerEventType triggerEvent;

        [BoxGroup("Top/Action", showLabel: false)]
        [EnumToggleButtons, HideLabel]
        public ActionType actionType;

        [BoxGroup("Conditions")]
        [LabelText("Dialogue Condition")]
        [DrawWithUnity]
        public Condition condition;

        [BoxGroup("Conditions")]
        [LabelText("Quest Requirements")]
        [InfoBox("All requirements listed here must be met.")]
        public List<QuestRequirement> questRequirements = new List<QuestRequirement>();

        [BoxGroup("Settings")]
        [ShowIf("actionType", ActionType.StartConversation)]
        [ConversationPopup(false)]
        [DrawWithUnity]
        public string conversation;
        
        [BoxGroup("Settings")]
        [ShowIf("actionType", ActionType.StartConversation)]
        public Transform conversant;

        [BoxGroup("Settings")]
        [ShowIf("actionType", ActionType.ExecuteLua)]
        [TextArea(2, 5)]
        public string luaCode;

        [BoxGroup("Settings")]
        [ShowIf("actionType", ActionType.SendQuestMachineMessage)]
        public string questMachineMessage;

        [BoxGroup("Settings")]
        [ShowIf("@this.actionType == ActionType.SetQuestState || this.actionType == ActionType.SetQuestNodeState")]
        public string questID;
        
        // --- AMBIGUITY FIXED: Explicitly using Quest Machine types ---
        [BoxGroup("Settings")]
        [ShowIf("actionType", ActionType.SetQuestState)]
        public PixelCrushers.QuestMachine.QuestState questState;
        
        [BoxGroup("Settings")]
        [ShowIf("actionType", ActionType.SetQuestNodeState)]
        public string questNodeID;
        
        // --- AMBIGUITY FIXED: Explicitly using Quest Machine types ---
        [BoxGroup("Settings")]
        [ShowIf("actionType", ActionType.SetQuestNodeState)]
        public PixelCrushers.QuestMachine.QuestNodeState questNodeState;

        [BoxGroup("Settings")]
        [ShowIf("actionType", ActionType.InvokeUnityEvent)]
        public UnityEvent onExecute;
    }

    #endregion
}