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

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

        # 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>();
            _variableStorage = GetComponentInChildren<InMemoryVariableStorage>();

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

        #region 变量操作

        public bool TryGetVariable<T>(string variableName, out T result)
        {
            return _variableStorage.TryGetValue(variableName, out result);
        }

        public void SetVariable(string variableName, string value)
        {
            _variableStorage.SetValue(variableName, value);
        }

        public void SetVariable(string variableName, bool value)
        {
            _variableStorage.SetValue(variableName, value);
        }

        public void SetVariable(string variableName, float value)
        {
            _variableStorage.SetValue(variableName, value);
        }

        public bool Contains(string variableName)
        {
            return _variableStorage.Contains(variableName);
        }

        public void ClearVariables()
        {
            _variableStorage.Clear();
        }

        #endregion

        /// <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 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.GetCurView().TrySkipLine())
            {
                AudioManager.Instance.StopVoice();
                DialogCanvasManager.GetCurView().NextStep();
            }
        }

        #region 命令名

        [YarnCommand("NextYarn")]
        public static void NextYarn()
        {
            EnumEventSystem.Global.Send(EventEnum.NextYarn);
            Instance.ClearVariables();
            Instance.StartCoroutine(GameLoopManager.Instance.NextSceneSo());
        }

        [YarnCommand("switch_tv")]
        public static void SwitchTV(string picName)
        {
            MainUIController.Instance.SwitchTV(picName);
        }

        [YarnCommand("show_tv_scene")]
        public static void ShowTVScene(float duration)
        {
            MainUIController.Instance.TVFadeIn(duration);
        }
        
        [YarnCommand("load_scene")]
        public static IEnumerator LoadScene(string sceneName, float duration = 1)
        {
            HideDialog();
            yield return SceneLoader.Instance.LoadSceneAsync(sceneName);
            DialogCanvasManager.Instance.SwitchDialogView(sceneName == "ClinicScene"
                ? DialogViewType.Bubble
                : DialogViewType.OldBox);

            AudioManager.PlayAmb2Audio("amb_general");
        }

        [YarnCommand("unload_scene")]
        public static IEnumerator UnloadScene(string sceneName)
        {
            yield return SceneLoader.Instance.UnloadSceneAsync(sceneName);
        }

        [YarnCommand("hide_dialog")]
        public static void HideDialog()
        {
            DialogCanvasManager.GetCurView().HideDialog();
        }

        [YarnCommand("fade_in")]
        public static IEnumerator FadeIn(float duration)
        {
            return MainUIController.Instance.FadeInSync(duration);
        }

        [YarnCommand("fade_out")]
        public static IEnumerator FadeOut(float duration)
        {
            return MainUIController.Instance.FadeOutSync(duration);
        }

        [YarnCommand("show_obj")]
        public static IEnumerator ShowObj(string picName)
        {
            return MainUIController.Instance.ShowObj(picName);
        }

        [YarnCommand("hide_obj")]
        public static IEnumerator HideObj()
        {
            return MainUIController.Instance.HideObj();
        }

        [YarnCommand("switch_dialog_view")]
        public static void SwitchDialogView(string viewName)
        {
            DialogCanvasManager.Instance.SwitchDialogView(Enum.Parse<DialogViewType>(viewName));
        }

        #endregion
    }
}