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

namespace KairoEngine.Core.GameActions
{
    public enum GameActionTriggerBehaviour
    {
        TriggerOnce,
        WaitForActions,
        RestartActions
    }

    [System.Serializable]
    public class GameActionTriggersController : ISerializationCallbackReceiver
    {
        [ListDrawerSettings(HideAddButton = true, HideRemoveButton = false, DraggableItems = true, Expanded = false, ShowPaging = false, ShowItemCount = true)]
        [ShowInInspector, NonSerialized]
        [Space(4)]
        public List<GameActionTrigger> triggers = new List<GameActionTrigger>();

        [NonSerialized]
        public GameActionsController actionsController = null;

        private bool actionsRunning = false;

        #region Flow

        public void TriggerActions()
        {
            if(actionsRunning) return;
            actionsController.Restart();
            actionsController.Start();
            actionsRunning = true;
            //foreach (var trigger in triggers) trigger.OnDisable();
        }
        public void OnEnable()
        {
            foreach (var trigger in triggers) trigger.OnEnable();
        }
        public void OnDisable()
        {
            foreach (var trigger in triggers) trigger.OnDisable();
        }

        public void Update()
        {
            if(actionsController.started && actionsController.isDone) actionsRunning = false;
            if(!actionsRunning) foreach (var trigger in triggers) trigger.Update();
        }

        public void AddTrigger(GameActionTrigger trigger)
        {
            for (int i = 0; i < triggers.Count; i++)
            {
                if(triggers[i].name == trigger.name)
                {
                    triggers[i] = trigger;
                    return;
                }   
            }
            triggers.Add(trigger);
        }

        #endregion

        #region Serialization

        [SerializeField, HideInInspector] private List<string> serializedTriggers = new List<string>();
        [SerializeField, HideInInspector] public GameActionObjectSerializer objectSerializer = new GameActionObjectSerializer();

        private void SerializeTriggers()
        {
            serializedTriggers = new List<string>();
            objectSerializer.ClearGameObjects();
            objectSerializer.ClearScriptableObjects();
            for (int i = 0; i < triggers.Count; i++)
            {
                triggers[i].OnBeforeSerialize(objectSerializer, i);
                string data = JsonUtility.ToJson(triggers[i]);
                serializedTriggers.Add(data);
            }
        }

        private void DeserializeTriggers()
        {
            if(serializedTriggers == null) return;
            for (int i = 0; i < serializedTriggers.Count; i++)
            {
                GameActionTrigger trigger = JsonUtility.FromJson<GameActionTriggerBase>(serializedTriggers[i]);
                trigger = GameActionTrigger.InvokeStringMethod(trigger.className, trigger.typeName, serializedTriggers[i]);
                trigger.controller = this;
                trigger.OnBeforeDeserialize(objectSerializer, i);
                AddTrigger(trigger);
            }
            objectSerializer.ClearGameObjects();
            objectSerializer.ClearScriptableObjects();
        }

        public void OnBeforeSerialize() => SerializeTriggers();
        public void OnAfterDeserialize() => DeserializeTriggers();

        #endregion

        #region NewAction

        [OnInspectorInit("GetCompatibleVariablenames"), OnValueChanged("AddNewTrigger")]
        [ValueDropdown("possibleTriggers", IsUniqueList = false)]
        [LabelText("Add New Trigger")]
        [NonSerialized]
        public GameActionTrigger newTrigger;

        private IEnumerable possibleTriggers = new ValueDropdownList<GameActionTrigger>();

        private void GetCompatibleVariablenames()
        {
            possibleTriggers = ReflectiveEnumerator.GetEnumerableOfType<GameActionTrigger>()
                .Where(x => x.GetTypeName() != "GameActionTriggerBase")
                .Where(x => x.GetTypeName() != "GameActionTrigger")
                .Select(x => new ValueDropdownItem(x.GetTriggerName(), x));
        }

        private void AddNewTrigger()
        {
            if(newTrigger != null)
            {
                newTrigger.controller = this;
                newTrigger.className = newTrigger.GetType().AssemblyQualifiedName;
                triggers.Add(newTrigger);
                newTrigger = null;
            }
        }

        #endregion

        //[LabelText("Behaviour")]
        //public GameActionTriggerBehaviour triggerBehaviour = GameActionTriggerBehaviour.WaitForActions;
    }
}