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

public class level2 : MonoBehaviour
{

    public GameObject item_parent;
    public GameObject item_parent_big;
    private List<ItemState_2> _itemList;
    public Camera cam;
    private GameObject selected;
    private Vector3 offset;
    private int out_layers = 30;
    public GameObject empty_parent;

    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;
        // }
        orthoCamera.orthographicSize = size;
    }
    void Start()
    {

        _itemList = new List<ItemState_2>();

        int index_ = 0;
        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_2()
            {
                _position = positionList[index_],
                _orderInLayer = child.GetComponent<SpriteRenderer>().sortingOrder,
                _tag = child.tag,
                _isFull = false,
                type = 1,
            });
            index_++;

        }
        foreach (Transform child in empty_parent.transform)
        {
            // Debug.Log("子物体: " + child.name);
            // Debug.Log("子物体: " + child.tag);
            _itemList.Add(new ItemState_2()
            {
                _position = positionList[index_],
                _orderInLayer = child.GetComponent<SpriteRenderer>().sortingOrder,
                _tag = child.tag,
                _isFull = false,
                type = 2
            });
            index_++;
        }


        // foreach (Transform child in item_parent.transform)
        // {
        //     float randomX = Random.Range(-3f, 3f);   // X 在 -2 ~ 2
        //     float randomY = 14f + Random.Range(-2f, 2f); // Y 在 -16 ~ -12
        //     child.position = new Vector3(randomX, randomY, child.position.z);
        // }

        // DOVirtual.DelayedCall(2.5f, () =>
        // {
        //     StartCoroutine(MoveChildrenCoroutine());
        // });

        // Debug.Log(JsonConvert.SerializeObject(_itemList));
        // foreach (var pos in positionList)
        // {
        //     Debug.Log("Position: " + pos);
        // }
    }
    List<Vector3> positionList = new List<Vector3>()
{
    new Vector3(0.44f, 1.30f, 0.00f),
    new Vector3(1.34f, -1.84f, 0.00f),
    new Vector3(-0.46f, -1.38f, 0.00f),
    new Vector3(-1.36f, 0.39f, 0.00f),
    new Vector3(1.17f, 2.46f, 0.00f),
    new Vector3(5.10f, 1.39f, 0.00f),
    new Vector3(1.06f, 1.38f, 0.00f),
    new Vector3(-1.48f, -1.30f, 0.00f),
    new Vector3(-6.83f, -0.40f, 0.00f),
    new Vector3(-2.82f, -0.40f, 0.00f),
    new Vector3(2.80f, 2.46f, 0.00f),
    new Vector3(-1.90f, -0.40f, 0.00f),
    new Vector3(-1.39f, -2.17f, 0.00f),
    new Vector3(0.83f, -0.41f, 0.00f),
    new Vector3(-5.81f, 0.49f, 0.00f),
    new Vector3(-6.61f, -1.29f, 0.00f),
    new Vector3(-0.31f, 0.49f, 0.00f),
    new Vector3(6.27f, -2.18f, 0.00f),
    new Vector3(-2.58f, 1.39f, 0.00f)
};

    // IEnumerator MoveChildrenCoroutine()
    // {
    //     foreach (Transform child in item_parent.transform)
    //     {
    //         // 随机目标 Y 在 -5 ~ 5
    //         float targetY = Random.Range(-5f, 5f);
    //         Vector3 targetPos = new Vector3(child.position.x, targetY, child.position.z);

    //         // DOTween 缓动到目标位置
    //         child.DOMove(targetPos, 1.7f).SetEase(Ease.InCubic);

    //         // 每个间隔 0.1s
    //         yield return new WaitForSeconds(0.05f);
    //     }
    // }
    // IEnumerator MoveBackCoroutine()
    // {
    //     int index = 0;
    //     foreach (Transform child in plate_parent.transform)
    //     {
    //         // 缓动到原始位置
    //         child.DOMove(originalPositions[index], 0.5f).SetEase(Ease.OutQuad);

    //         index++;
    //         // 每隔 0.3s 执行一个
    //         yield return new WaitForSeconds(0.2f);
    //     }
    // }
    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)
                {
                    if (selected.tag == "bg")
                    {
                        // bg 不做缩放和旋转，只记录偏移
                        Vector3 pos = cam.ScreenToWorldPoint(Input.mousePosition);
                        offset = selected.transform.position - new Vector3(pos.x, selected.transform.position.y, selected.transform.position.z);
                    }
                    else
                    {
                        // ✅ 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";

                        // 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);

            if (selected.tag == "bg")
            {
                // 只允许 X 方向拖拽，限制在 [-2.3, 2.3]
                float newX = pos.x + offset.x;
                newX = Mathf.Clamp(newX, -2.8f, 2.8f);
                selected.transform.position = new Vector3(newX, selected.transform.position.y, selected.transform.position.z);
            }
            else
            {
                selected.transform.position = new Vector3(pos.x, pos.y, selected.transform.position.z) + offset;
            }
        }

        // 鼠标松开
        if (Input.GetMouseButtonUp(0) && selected != null)
        {
            if (selected.tag != "bg")
            {
                // 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 = 0;
                        if (item.type == 1)
                        {
                            dist = Vector3.Distance(selected.transform.localPosition, item._position);
                        }
                        else
                        {
                            Vector3 localPosInTarget = item_parent_big.transform.InverseTransformPoint(selected.transform.position);
                            dist = Vector3.Distance(localPosInTarget, item._position);
                        }

                        if (dist < 0.5f)
                        {
                            // selected.SetParent(item_parent_big);
                            if (item.type == 2) selected.transform.SetParent(item_parent_big.transform, true);

                            // 吸附过去并旋转归零
                            selected.transform.DOLocalMove(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";
                    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);
                }
            }

            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;
    }
}

public class ItemState_2
{
    [JsonIgnore]
    public Vector2 _position;
    public int _orderInLayer;
    public string _tag;
    public bool _isFull;
    public GameObject _inGameobject;
    public int type;
}