using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;

public class FirstPanel : MonoBehaviour
{
    public static FirstPanel instance;
    /// <summary>
    /// 检测的图片
    /// </summary>
    public List<Image> checkImages;
    /// <summary>
    /// 选中的图片
    /// </summary>
    public List<GameObject> showImages;
    /// <summary>
    /// 省级
    /// </summary>
    public GameObject sheng_Panel;
    /// <summary>
    /// 返回福建省地图
    /// </summary>
    public Button backbtn;

    /// <summary>
    /// 目录
    /// </summary>
    public GameObject tab;

    /// <summary>
    /// 市
    /// </summary>
    public GameObject citys;

    /// <summary>
    /// 服务器IP
    /// </summary>
    [HideInInspector]
    public string serverIP;
    /// <summary>
    /// 当前选中的海关
    /// </summary>
    public static CustomItem currentChoseCustonItem;



    void Awake()
    {
        currentChoseCustonItem = null;
        instance = this;
        backbtn.onClick.AddListener(() => 
        {
            //点福州海关，回到首页，当前无选中关区
            currentChoseCustonItem = null;
            sheng_Panel.gameObject.SetActive(true);
            //关闭所有市
            citys.transform.GetComponentsInChildren<CityPanel>().ToList().ForEach(a => 
            {
                a.gameObject.SetActive(false);
            });
            //取消所有标签选中
            FirstPanel.instance.tab.GetComponentsInChildren<TabItem>().ToList().ForEach(a =>
            {
                a.SetNoChoseState();
            });
            Application.ExternalCall("ClickCustom", "");
            Debug.Log("调前端回到首页");
        });

        //初始化
        Application.ExternalCall("OnWake");

#if UNITY_EDITOR
        serverIP = "111.229.30.246";
#endif
    }
    
    /// <summary>
    /// 前端调用初始化传IP
    /// </summary>
    /// <param name="serverIP"></param>
    public void InitUnity(string serverIP)
    {
        this.serverIP= serverIP;
        Debug.Log("接收IP："+serverIP);
    }


    private void Update()
    {
        int index = 0;
        foreach (Image image in checkImages) 
        {
            if (IsTrig(image))
            {
                //触发此市
                //Debug.Log(image.name);
                Chose(index);
                return;
            }

            index++;
        }
        //Debug.Log("未触发");
        Chose(-1);
    }

    /// <summary>
    /// 是否触发区域
    /// </summary>
    /// <param name="image"></param>
    /// <returns></returns>
    private bool IsTrig(Image image)
    {
        //检测鼠标
        RectTransformUtility.ScreenPointToLocalPointInRectangle(image.rectTransform, Input.mousePosition, null, out Vector2 localPos);

        Vector2 bil = new Vector2((localPos.x + image.rectTransform.rect.width / 2f) / image.rectTransform.rect.width, (localPos.y + image.rectTransform.rect.height / 2f) / image.rectTransform.rect.height);
        Color pixelColor = image.sprite.texture.GetPixelBilinear(bil.x, bil.y);
        //Debug.Log("鼠标点："+Input.mousePosition + "  ->  纹理点：" + localPos + "  ->  纹理点序列化："+ bil + "  ->  透明度值："+ pixelColor.a);
        if (pixelColor.a == 1)
        {
            return true;
        }
        else
        {
            return false;
        }
    }

    /// <summary>
    /// 上一个显示的
    /// </summary>
    GameObject lastShow;
    private void Chose(int index)
    {
        if(index==-1)
        {
            if (lastShow != null)
            {
                lastShow.gameObject.SetActive(false);
            }
        }
        else
        {
            if (lastShow != null)
            {
                lastShow.gameObject.SetActive(false);
            }
            showImages[index].gameObject.SetActive(true);
            lastShow = showImages[index].gameObject;
        }
    }


    public IEnumerator CallGet(string url,Action<bool,string> back)
    {
        UnityWebRequest request = UnityWebRequest.Get(url);
        yield return request.SendWebRequest();
        if(!request.isHttpError && !request.isNetworkError)
        {
            back(true,request.downloadHandler.text);
        }
        else
        {
            back(false, request.error);
        }
    }
}