using System;
using AibisDream.Framework;
using AibisDream.Kit;
using UnityEngine;
using UnityEngine.Events;
using Yarn.Unity;

namespace AibisDream
{
    public class DialogController : Singleton<DialogController>
    {
        private DialogueRunner _dialogueRunner;

        # region controller状态标识

        private bool _isTalking;

        public bool IsTalking
        {
            set
            {
                if (_isTalking == value) return;

                _isTalking = value;
                Debug.Log($"IsTalking 状态更改: {_isTalking}");
                if (value)
                {
                    OnDialogueStart?.Invoke();
                }
                else
                {
                    OnDialogueComplete?.Invoke();
                }
            }
            get => _isTalking;
        }

        public bool quickRunMode;

        # endregion

        public static UnityAction OnDialogueStart;
        public static UnityAction OnDialogueComplete;

        private void Start()
        {
            _dialogueRunner = GetComponentInChildren<DialogueRunner>();

            _dialogueRunner.onDialogueStart.AddListener(() =>
            {
                EnumEventSystem.Global.Send(InteractionEventEnum.End);
                OnDialogueStart?.Invoke();
                IsTalking = true;
            });
            _dialogueRunner.onDialogueComplete.AddListener(() =>
            {
                EnumEventSystem.Global.Send(InteractionEventEnum.Start);
                OnDialogueComplete?.Invoke();
                IsTalking = false;
            });
            
            RegisterEvent();
        }

        private void RegisterEvent()
        {
            EnumEventSystem.Global.Register(EventEnum.SceneUnload, ResetDialog);
        }

        private void ResetDialog()
        {
            _dialogueRunner.Stop();
            StorageSystem.Instance.Clear();
            DialogCanvasManager.Instance.HideDialog();
            DialogCanvasManager.Instance.SwitchDialogView(DialogViewType.OldBox);
        }

        /// <summary>
        /// 开启对话
        /// </summary>
        /// <param name="yarnProject">Yarn组</param>
        public void StartDialog(YarnProject yarnProject)
        {
            _dialogueRunner.SetProject(yarnProject);
            _dialogueRunner.StartDialogue("Start");
        }
        public void StopDialog()
        {
            _dialogueRunner.Stop();
        }

        public void LoadDialog(YarnProject yarnProject)
        {
            _dialogueRunner.SetProject(yarnProject);
            _dialogueRunner.StartDialogue("Center");
        }

        public void StartDialogNode(string nodeName)
        {
            if (CheckIfNodeExistInCurrentYarnProject(nodeName))
            {
                _dialogueRunner.StartDialogue(nodeName);
            }
        }

        public bool CheckIfNodeExistInCurrentYarnProject(string nodeName)
        {
            YarnProject currentProject = _dialogueRunner.yarnProject;
            string[] nodeNames = currentProject.NodeNames;
            if (Array.Exists(nodeNames, item => item == nodeName))
            {
                return true;
            }
            else
            {
                Debug.Log($"节点 {nodeName} 不存在！");
                return false;
            }
        }
        
        /// <summary>
        /// 跳到下一句
        /// </summary>
        public void JumpLine()
        {
            if (!DialogCanvasManager.Instance.TrySkipLine())
            {
                DialogCanvasManager.Instance.NextStep();
            }
        }
    }
}