using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;

namespace Beyond
{
    public class ActionTriggerEvent : MonoBehaviour
    {
        public bool debugPrint;
        public Button ActionButton;
        public Button LadderButton;
        public Button CrouchButton;
        public GameObject AttackButton;
        public GameObject SpellButton;
        public GameObject ComsumableButton;
        public GameObject ComsumableFaithButton;
        public GameObject powerButtonsParent;
        public Button RunButton;
        public Button TargetButton;
        public Button JumpButton;

        public bool disableRun = false;
        public bool disableCrouch = false;

        public static Action<TriggerDescriptor> ActionTriggerEnter;
        public static Action<TriggerDescriptor> ActionTriggerExit;
        /*
                public static Action<GameObject> LadderTriggerEnter;
                public static Action<GameObject> LadderTriggerExit;

                public static Action<GameObject> FootbridgeTriggerEnter;
                public static Action<GameObject> FootbridgeTriggerExit;

                public static Action<GameObject> EnterFootbridge;
                public static Action<GameObject> ExitFootbridge;
                public UnityEvent OnHideOnTriggerEnter;
                public UnityEvent OnHideOnTriggerExit;

                public UnityEvent OnActionTriggerEnter;
                public UnityEvent OnActionTriggerExit;

                public UnityEvent OnLadderTriggerEnter;
                public UnityEvent OnLadderTriggerExit;

                public UnityEvent OnFootbridgeTriggerEnter;
                public UnityEvent OnFootbridgeTriggerExit;

                public UnityEvent OnEnterFootbridge;
                public UnityEvent OnExitFootbridge;
        */

        private bool usingFootbridge;

        private TriggerDescriptor m_currentDesc;

        private List<TriggerDescriptor> m_Triggers = new List<TriggerDescriptor>();

        private GameStateManager.State m_prevGameState = GameStateManager.State.NORMAL;
        /*
        private List<TriggerObject> m_triggers = new List<TriggerObject>();
        public enum TriggerType
        {
            Dialogue,
            Ladder,
            Generic,
            Collectable,
            COUNT
        };

        public struct TriggerObject : IComparable<TriggerObject>, IComparable
        {
            public GameObject obj;
            public TriggerType type;

            public int CompareTo(TriggerObject other)
            {
                return type.CompareTo(other.type);
            }

            public int CompareTo(object obj)
            {
                if (ReferenceEquals(null, obj)) return 1;
                return obj is TriggerObject other ? CompareTo(other) : throw new ArgumentException($"Object must be of type {nameof(TriggerObject)}");
            }

            public static bool operator <(TriggerObject left, TriggerObject right)
            {
                return left.CompareTo(right) < 0;
            }

            public static bool operator >(TriggerObject left, TriggerObject right)
            {
                return left.CompareTo(right) > 0;
            }

            public static bool operator <=(TriggerObject left, TriggerObject right)
            {
                return left.CompareTo(right) <= 0;
            }

            public static bool operator >=(TriggerObject left, TriggerObject right)
            {
                return left.CompareTo(right) >= 0;
            }
        }
        */

        private void Initialize()
        {
            if (LadderButton)
                LadderButton.gameObject.SetActive(false);
            if (ActionButton)
                ActionButton.gameObject.SetActive(false);
            if (CrouchButton)
                CrouchButton.gameObject.SetActive(!disableCrouch);
            if (AttackButton)
                AttackButton.gameObject.SetActive(true);
            if (SpellButton)
                SpellButton.gameObject.SetActive(true);
            if (ComsumableButton)
                ComsumableButton.gameObject.SetActive(true);
            if (ComsumableFaithButton)
                ComsumableFaithButton.gameObject.SetActive(true);
            if (powerButtonsParent)
            {
                powerButtonsParent.SetActive(true);
            }
            if (RunButton)
                RunButton.gameObject.SetActive(!disableRun);

            //if (TargetButton)
            //    TargetButton.gameObject.SetActive(true);
            //if (JumpButton)
            //    JumpButton.gameObject.SetActive(true);
        }

        private void OnActionTrigger(bool activate, TriggerDescriptor.TriggerType type)
        {
            if (type == TriggerDescriptor.TriggerType.Ladder)
            {
                if (LadderButton)
                    LadderButton.gameObject.SetActive(activate);
                if (ActionButton)
                    ActionButton.gameObject.SetActive(false);
            }
            else
            {
                if (LadderButton)
                    LadderButton.gameObject.SetActive(false);
                if (ActionButton)
                    ActionButton.gameObject.SetActive(activate);
            }
            if (CrouchButton && !disableCrouch)
                CrouchButton.interactable = !activate;
            if (AttackButton)
                AttackButton.gameObject.SetActive(!activate);
            if (SpellButton)
                SpellButton.gameObject.SetActive(!activate);
            //if (ComsumableButton)
            //    ComsumableButton.gameObject.SetActive(!activate);
            //if (ComsumableFaithButton)
            //    ComsumableFaithButton.gameObject.SetActive(!activate);
            if (powerButtonsParent)
            {
                powerButtonsParent.SetActive(!activate);
            }
            if (RunButton && !disableRun)
                RunButton.interactable = !activate;
            //if (TargetButton)
            //    TargetButton.interactable = !activate;
            //if (JumpButton)
            //    JumpButton.interactable = !activate;
        }

        private void Awake()
        {
            ActionTriggerEnter += OnInvokeActionTriggerEnter;
            ActionTriggerExit += OnInvokeActionTriggerExit;
            /*
            LadderTriggerEnter += OnInvokeLadderTriggerEnter;
            LadderTriggerExit += OnInvokeLadderTriggerExit;
            FootbridgeTriggerEnter += OnInvokeFootbridgeTriggerEnter;
            FootbridgeTriggerExit += OnInvokeFootbridgeTriggerExit;
            EnterFootbridge += OnInvokeEnterFootbridge;
            ExitFootbridge += OnInvokeExitFootbridge;
            */
            //OnInvokeActionTriggerExit(gameObject);
            Initialize();
        }

        private void OnDestroy()
        {
            ActionTriggerEnter -= OnInvokeActionTriggerEnter;
            ActionTriggerExit -= OnInvokeActionTriggerExit;
            /*
            LadderTriggerEnter -= OnInvokeLadderTriggerEnter;
            LadderTriggerExit -= OnInvokeLadderTriggerExit;
            FootbridgeTriggerEnter -= OnInvokeFootbridgeTriggerEnter;
            FootbridgeTriggerExit -= OnInvokeFootbridgeTriggerExit;
            EnterFootbridge -= OnInvokeEnterFootbridge;
            ExitFootbridge -= OnInvokeExitFootbridge;
            */
        }

        private void DebugLog(string text)
        {
            if (debugPrint)
            {
                Debug.Log(text);
            }
        }

        /*
                private void OnInvokeHideOnTriggerEnter()
                {
                    DebugLog("OnInvokeHideOnTriggerEnter");
                    OnHideOnTriggerEnter?.Invoke();
                }

                private void OnInvokeHideOnTriggerExit()
                {
                    DebugLog("OnInvokeHideOnTriggerExit");
                    OnHideOnTriggerExit?.Invoke();
                }

                private void OnInvokeEnterFootbridge(GameObject gameObject)
                {
                    DebugLog("OnInvokeEnterFootbridge");
                    usingFootbridge = true;
                    OnInvokeHideOnTriggerEnter();
                    OnEnterFootbridge?.Invoke();
                }

                private void OnInvokeExitFootbridge(GameObject gameObject)
                {
                    DebugLog("OnInvokeExitFootbridge");
                    usingFootbridge = false;
                    OnInvokeHideOnTriggerExit();
                    OnExitFootbridge?.Invoke();
                }

                private void OnInvokeFootbridgeTriggerEnter(GameObject gameObject)
                {
                    if (usingFootbridge) return;
                    DebugLog("OnInvokeFootbridgeTriggerEnter");
                    OnFootbridgeTriggerEnter?.Invoke();
                    OnInvokeHideOnTriggerEnter();
                }

                private void OnInvokeFootbridgeTriggerExit(GameObject gameObject)
                {
                    if (usingFootbridge) return;
                    DebugLog("OnInvokeFootbridgeTriggerExit");
                    OnFootbridgeTriggerExit?.Invoke();
                    OnInvokeHideOnTriggerExit();
                }
                */

        private void OnInvokeActionTriggerEnter(TriggerDescriptor to)
        {
            DebugLog("OnInvokeActionTriggerEnter");
            //OnActionTrigger(true, to.type);
            //OnActionTriggerEnter?.Invoke();
            //OnInvokeHideOnTriggerEnter();
            if (!m_Triggers.Contains(to))
                m_Triggers.Add(to);
        }

        private void OnInvokeActionTriggerExit(TriggerDescriptor to)
        {
            //OnActionTrigger(false, to.type);
            DebugLog("OnInvokeActionTriggerExit");
            //OnActionTriggerExit?.Invoke();
            //OnInvokeHideOnTriggerExit();
            if (m_Triggers.Contains(to))
            {
                m_Triggers.Remove(to);
                if (to == m_currentDesc)
                {
                    OnActionTrigger(false, to.type);
                    m_currentDesc = null;
                }
            }
            else
            {
                Debug.LogError("Exitting trigger that is not on the list! " + to.obj.name, this);
            }
        }

        /*
                private void OnInvokeLadderTriggerEnter(GameObject gameObject)
                {
                    DebugLog("OnInvokeLadderTriggerEnter");
                    OnLadderTriggerEnter?.Invoke();
                    OnInvokeHideOnTriggerEnter();
                }

                private void OnInvokeLadderTriggerExit(GameObject gameObject)
                {
                    DebugLog("OnInvokeLadderTriggerExit");
                    OnLadderTriggerExit?.Invoke();
                    OnInvokeHideOnTriggerExit();
                }
        */

        private void Update()
        {
            var gameState = GameStateManager.Instance.CurrentState;
            if (GameStateManager.Instance.CurrentState != m_prevGameState && m_currentDesc != null)
            {
                if (gameState == GameStateManager.State.COMBAT)
                {
                    if (m_currentDesc != null)
                    {
                        OnActionTrigger(false, m_currentDesc.type);
                    }

                    m_prevGameState = gameState;
                    return;
                }
                else if (gameState == GameStateManager.State.NORMAL)
                {
                    OnActionTrigger(true, m_currentDesc.type);
                }
            }

            m_prevGameState = gameState;
            if (m_Triggers.Count > 0)
            {
                if (m_Triggers.Count > 1)
                {
                    m_Triggers.Sort();
                }

                if (m_currentDesc != m_Triggers[0])
                {
                    if (m_currentDesc != null)
                    {
                        OnActionTrigger(false, m_currentDesc.type);
                    }

                    m_currentDesc = null;
                    if (gameState != GameStateManager.State.COMBAT)
                    {
                        m_currentDesc = m_Triggers[0];
                        OnActionTrigger(true, m_currentDesc.type);
                    }
                }
            }
        }
    }
}