using System;
using System.Collections.Generic;
using System.Linq;
using AibisDream.Framework;
using AibisDream.Kit;
using AibisDream.Utility;
using DG.Tweening;
using Newtonsoft.Json;
using UnityEngine;

namespace AibisDream.FixSystem
{
    public class BodyModule : MonoBehaviour, ISocket
    {
        #region 组件引用

        private const string SocketObjName = "Socket";

        public Transform socketPos;

        private BodyModuleSystem _bodyModuleSystem;
        private Material _highlightMaterial;
        private Material _alarmMaterial;
        private Material _originalMaterial; // 原材质

        private SpriteRenderer _targetSpriteRenderer; // 目标的 SpriteRenderer

        private CutLine _cutLine;

        #endregion

        // 模块基本数据
        [SerializeField] public BodyModuleData data;
        public float clickRadius = 0.2f;
        public bool available = true;
        private bool _cutting;

        private void Awake()
        {
            // 获取组件索引
            InitReference();
        }

        private void InitReference()
        {
            socketPos = transform.Find(SocketObjName);
            _bodyModuleSystem = transform.parent.parent.GetComponent<BodyModuleSystem>();

            _targetSpriteRenderer = transform.Find("Module Pic").GetComponent<SpriteRenderer>();
            _originalMaterial = _targetSpriteRenderer.GetComponent<SpriteRenderer>().material;
            _highlightMaterial = Resources.Load<Material>("Materials/HighlightMaterial");
            _alarmMaterial = Resources.Load<Material>("Materials/AlarmMaterial");
        }

        private void Update()
        {
            if (_cutting && Input.GetMouseButton(0))
            {
                OnCut();
            }
        }

        #region 插槽功能

        public bool IsAvailable()
        {
            return available;
        }

        public void SetSocketAvailable(bool isAvailable)
        {
            available = isAvailable;
        }

        public void PlugIn()
        {
            if (DialogController.Instance)
                // 然后触发Yarn节点
                DialogController.Instance.StartDialogNode(_bodyModuleSystem.inHotErr ? "系统发热" : data.PlugInNodeName);
        }

        public void PlugOut()
        {
        }

        public Vector3 GetSocketPos()
        {
            return socketPos.position;
        }

        #endregion

        #region 高亮提示和隐藏

        public void Highlight(bool enable)
        {
            if (_targetSpriteRenderer != null && _highlightMaterial != null &&
                _targetSpriteRenderer.material != _alarmMaterial)
            {
                _targetSpriteRenderer.material = enable ? _highlightMaterial : _originalMaterial;
            }
        }

        public void Alarm(bool enable)
        {
            if (_targetSpriteRenderer != null && _alarmMaterial != null)
            {
                _targetSpriteRenderer.material = enable ? _alarmMaterial : _originalMaterial;
            }
        }

        #endregion

        #region 切割相关

        public void EnableCut()
        {
            // 打开或获取CutLine
            ShowCutLine();
            _cutLine.OnCuttingDown += OnCuttingDown;
            _cutting = true;
            
            EnumEventSystem.Global.Send(EventEnum.CutStart);
        }

        private void OnCut()
        {
            Vector2 mousePos = CommonUtil.GetMouseWorldPos(Input.mousePosition);
            _cutLine.DetectLineClick(mousePos, clickRadius);
        }

        private void OnCuttingDown()
        {
            _cutLine.OnCuttingDown -= OnCuttingDown;
            _cutting = false;
            // 模块脱落
            _cutLine.HideLine();
            _bodyModuleSystem.RemoveModule(this);
            ActionKit.Sequence()
                .Delay(0.5f)
                .DOTween(() => transform.DOMoveY(ConstRef.TweenEndY,
                    (transform.position.y - ConstRef.TweenEndY) / ConstRef.FallSpeed).SetEase(Ease.InQuad))
                .Callback(() => DialogController.Instance?.StartDialogNode($"{data.moduleName}_cutdown"))
                .Callback(() => EnumEventSystem.Global.Send(EventEnum.CutEnd))
                .Start(this, () => Destroy(gameObject));
        }

        private void ShowCutLine()
        {
            // 切割线不存在，就新建一个
            if (!_cutLine)
            {
                var prefab = ResourceKit.LoadAssetSync<GameObject>(ConstRef.CutLinePrefabName);
                var cutLineObj = Instantiate(prefab, transform);
                _cutLine = cutLineObj.GetComponent<CutLine>();
            }

            // 对切割线进行初始化
            var shapePoints = new List<Vector2>();
            _targetSpriteRenderer.sprite.GetPhysicsShape(0, shapePoints);
            if (shapePoints.Count <= 0)
            {
                Debug.LogWarning($"{name} has no shape");
                return;
            }

            // 本地坐标转世界坐标
            var shapePointsV3 = shapePoints
                .Select(item => _targetSpriteRenderer.transform.TransformPoint(item))
                .ToList();

            _cutLine.Init(shapePointsV3, clickRadius);
        }

        #endregion
    }

    [Serializable]
    public struct BodyModuleData
    {
        public const string PlugInNodeTemplate = "{0}PlugIn";

        // ID
        public string moduleName;

        // 只读
        [JsonIgnore] public string PlugInNodeName => string.Format(PlugInNodeTemplate, moduleName);
    }
}