using System.Collections;
using System.Collections.Generic;
using Newtonsoft.Json;
using UnityEngine;
using DG.Tweening;
using TowerClimberChronicles;

public class level3 : MonoBehaviour
{
    public GameObject plate_parent;
    public GameObject item_parent;
    private List<ItemState> _itemList;
    public Camera cam;
    private GameObject selected;
    private Vector3 offset;
    private int out_layers = 30;
    private List<Vector3> originalPositions = new List<Vector3>();
    void Awake()
    {
        Camera orthoCamera = GameObject.Find("Main Camera").GetComponent<Camera>();

        float size = (float)System.Math.Round(5.5f / ((float)Screen.width / Screen.height), 4);
        // string type = SystemInfo.deviceModel.ToLower().Trim();
        // // Debug.Log($"type==========={type}");
        // if (type.Substring(0, 3) == "ipa")
        // {//iPad机型
        //     size = 49.9f;
        // }
        Debug.Log(size + "////////////////");
        orthoCamera.orthographicSize = size;
    }
    void Start()
    {
        _itemList = new List<ItemState>();


        foreach (Transform child in item_parent.transform)
        {
            Debug.Log("子物体: " + child.name);
            Debug.Log("子物体: " + child.tag);
            _itemList.Add(new ItemState()
            {
                _position = child.position,
                _orderInLayer = child.GetComponent<SpriteRenderer>().sortingOrder,
                _tag = child.tag,
                _isFull = false
            });
        }
        foreach (Transform child in item_parent.transform)
        {
            Rigidbody2D rb = child.GetComponent<Rigidbody2D>();
            if (rb != null)
            {
                rb.simulated = true;

                // 随机方向
                Vector2 randomDir = Random.insideUnitCircle.normalized;

                // 随机力度（比如 5~10）
                float randomForce = Random.Range(2f,3f);

                // 添加力
                rb.AddForce(randomDir * randomForce, ForceMode2D.Impulse);
            }
        }

        Debug.Log(JsonConvert.SerializeObject(_itemList));
    }


    private GameObject Popup;
    void Update()
    {
        // 鼠标按下时检测
        if (Input.GetMouseButtonDown(0))
        {
            if (Popup == null) Popup = GameObject.Find("Popup");
            if (Popup != null && Popup.transform.childCount != 0) return;
            Vector2 mousePos = cam.ScreenToWorldPoint(Input.mousePosition);
            RaycastHit2D[] hits = Physics2D.RaycastAll(mousePos, Vector2.zero);

            if (hits.Length > 0)
            {
                selected = GetTopSprite(hits);
                if (selected != null)
                {
                    // ✅ 如果该物体已经在 _itemList 中，释放槽位
                    foreach (var item in _itemList)
                    {
                        if (item._inGameobject == selected)
                        {
                            item._isFull = false;
                            item._inGameobject = null;
                            break;
                        }
                    }

                    selected.GetComponent<SpriteRenderer>().sortingLayerName = "layer_4_drag";
                    selected.GetComponent<Rigidbody2D>().simulated = false;
                    // 点击时强制修正为 0 度旋转
                    selected.transform.DORotate(Vector3.zero, 0.2f).SetEase(Ease.OutQuad);

                    // DOTween 缩放到固定 1.1 倍
                    // selected.transform.DOScale(Vector3.one * 1.1f, 0.2f).SetEase(Ease.OutBack);

                    Vector3 pos = cam.ScreenToWorldPoint(Input.mousePosition);
                    offset = selected.transform.position - new Vector3(pos.x, pos.y, selected.transform.position.z);
                    selected.GetComponent<SpriteRenderer>().sortingOrder = out_layers;
                    out_layers++;
                }
            }
        }

        // 拖拽中
        if (Input.GetMouseButton(0) && selected != null)
        {
            Vector3 pos = cam.ScreenToWorldPoint(Input.mousePosition);
            selected.transform.position = new Vector3(pos.x, pos.y, selected.transform.position.z) + offset;
        }

        // 鼠标松开
        if (Input.GetMouseButtonUp(0) && selected != null)
        {
            // DOTween 缩放还原到固定 1 倍
            selected.transform.DOScale(Vector3.one, 0.2f).SetEase(Ease.InOutSine);

            bool snapped = false;

            // 吸附逻辑：检查标签和位置
            string tag = selected.tag;
            foreach (var item in _itemList)
            {
                if (item._isFull) continue;
                if (item._tag == tag)
                {
                    float dist = Vector3.Distance(selected.transform.position, item._position);
                    if (dist < 0.5f)
                    {
                        // 吸附过去并旋转归零
                        selected.transform.DOMove(item._position, 0.2f).SetEase(Ease.OutQuad);
                        selected.transform.DORotate(Vector3.zero, 0.2f).SetEase(Ease.OutQuad);
                        selected.GetComponent<SpriteRenderer>().sortingLayerName = "layer_2_inslot";
                        selected.GetComponent<SpriteRenderer>().sortingOrder = item._orderInLayer;
                        item._isFull = true;
                        item._inGameobject = selected;
                        snapped = true;
                        selected.GetComponent<PolygonCollider2D>().enabled = false;
                        break;
                    }
                }
            }

            // 如果吸附成功 → 检查整个列表
            if (snapped)
            {
                bool allFull = true;
                foreach (var item in _itemList)
                {
                    if (!item._isFull)
                    {
                        allFull = false;
                        break;
                    }
                }

                if (allFull)
                {
                    Debug.Log("所有物体都已吸附完成！");
                    GameDispatcher.Instance.Dispatch(GameMsg.GameSuccess);
                }
            }
            else
            {
                // 如果没有吸附成功 → 随机旋转 ±8°
                selected.GetComponent<SpriteRenderer>().sortingLayerName = "layer_3_out";
                selected.GetComponent<Rigidbody2D>().simulated = true;
                // int randomChoice = Random.Range(0, 2); // 0 或 1
                // float randomAngle = (randomChoice == 0) ? -8f : 8f;
                // selected.transform.DORotate(new Vector3(0, 0, randomAngle), 0.3f).SetEase(Ease.OutQuad);

                //  GameDispatcher.Instance.Dispatch(GameMsg.GameSuccess);//zhushi
            }

            selected = null;
        }

    }

    private GameObject GetTopSprite(RaycastHit2D[] hits)
    {
        GameObject top = null;
        int topLayer = int.MinValue;
        int topOrder = int.MinValue;

        foreach (var hit in hits)
        {
            SpriteRenderer sr = hit.collider.GetComponent<SpriteRenderer>();
            if (sr != null)
            {
                int layerID = SortingLayer.GetLayerValueFromID(sr.sortingLayerID);
                int order = sr.sortingOrder;

                if (layerID > topLayer || (layerID == topLayer && order > topOrder))
                {
                    top = sr.gameObject;
                    topLayer = layerID;
                    topOrder = order;
                }
            }
        }
        return top;
    }
}