powerfun-unity/Assets/Scripts/UI/Prefab/Panel/NewRouteDetailController.cs

using Assets.Scripts;
using Assets.Scripts.Apis.Models;
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class NewRouteDetailController : PFUIPanel
{
    // Start is called before the first frame update
    Dictionary<string, Texture> caches;
    GameObject map;
    ScrollRect scroll;
    
    protected override void Awake()
    {
        caches = new Dictionary<string, Texture>();
        scroll = transform.Find("Container/Right/Scroll View").GetComponent<ScrollRect>();
        UIManager.AddEvent(scroll.gameObject, UnityEngine.EventSystems.EventTriggerType.EndDrag, OnEndDrag);
#if UNITY_ANDROID || UNITY_IOS
        map = Resources.Load<GameObject>("UI/Prefab/MapList/MapItem-Mobile");
#else
        map = Resources.Load<GameObject>("UI/Prefab/MapList/MapItem");
#endif
    }

    protected override void OnDestroy()
    {
        caches = null;
        Resources.UnloadUnusedAssets();
        GC.Collect();
        Debug.Log("list empty");
    }
    void Start()
    {
        transform.Find("MainNav").GetComponent<MainNav>().ShowBack();
        var rect = transform.GetComponent<RectTransform>();
        rect.offsetMax = new Vector2(rect.offsetMax.x, 0);
        rect.offsetMin = new Vector2(rect.offsetMin.x, 0);
    }
    
    // Update is called once per frame
    void Update()
    {
        if (Input.GetAxis("Mouse ScrollWheel") != 0)
        {
            if (scroll.verticalNormalizedPosition <= 0)
            {
                startMouse = true;
            }
        }
        else
        {
            if (startMouse)
            {
                startMouse = false;
                OnEndDrag(null);
            }
        }
    }
    MapRouteAreaItem area;
    int pageIndex = 0, pageSize = 10;
    bool isEnd = false, startMouse = false;
    public async void Initial(MapRouteAreaItem area)
    {
        isEnd = false;
        pageIndex = 0;
        this.area = area;
        var left = transform.Find("Container/Left");
        left.Find("Icon").GetComponent<RawImage>().texture = null;
        scroll.content.DestroyChildren();
        transform.Find("Container/Left/RideContainer/Text").GetComponent<Text>()
                .text = string.Empty;
        transform.Find("Container/Left/Infos/DistanceContainer/Text").GetComponent<Text>()
                .text = string.Empty;
        transform.Find("Container/Left/Infos/EleContainer/Text").GetComponent<Text>()
            .text = string.Empty;
        transform.Find("Container/Left/Infos/SlopeContainer/Text").GetComponent<Text>()
            .text = string.Empty;
        if (area.BannerImage != null) 
        {
            Utils.DisplayImageTempDict(left.Find("Icon").GetComponent<RawImage>(), area.BannerImage, caches);
        }
        left.Find("Name").GetComponent<Text>().text = area.Name;
        GetData();
        GetList();
        
    }

    private void OnEndDrag(BaseEventData arg0)
    {
        Debug.Log(scroll.verticalNormalizedPosition);
        if (scroll.verticalNormalizedPosition <= 0 && !isEnd)
        {
            pageIndex++;
            GetList();
        }
    }
    private async void GetData() 
    {
        var res = await ConfigHelper.mapApi.GetMapRouteAreaDetail(area.Id);
        if (res.result) 
        {
            transform.Find("Container/Left/RideContainer/Text").GetComponent<Text>()
                .text = res.data.RideCount.ToString();
            transform.Find("Container/Left/Infos/DistanceContainer/Text").GetComponent<Text>()
                .text = $"{res.data.TotalDistance.ToString("#0")}KM";
            transform.Find("Container/Left/Infos/EleContainer/Text").GetComponent<Text>()
                .text = $"{res.data.TotalClimb.ToString("#0")}M";
            transform.Find("Container/Left/Infos/SlopeContainer/Text").GetComponent<Text>()
                .text = $"{res.data.AverageGrade.ToString("#0.00")}%";
            LayoutRebuilder.ForceRebuildLayoutImmediate(transform.Find("Container/Left/RideContainer").GetComponent<RectTransform>());
        }
    }

    private async void GetList()
    {
        var res = await ConfigHelper.mapApi.GetMapRouteAreaDetailList(area.Id, pageIndex, pageSize);
        if (res.result)
        {
            if (res.data.Count > 0)
            {
                DisplayMaps(res.data);
            }
            else 
            {
                isEnd = true;
            }
        }
    }

    void DisplayMaps(List<MapRoute> list)
    {
        if (map != null)
        {
            foreach (var item in list)
            {
                var obj = Instantiate(map);
                obj.GetComponent<MapItem>().Initial(item, caches, area);
                //obj.SendMessage("Initial", );
                obj.transform.SetParent(scroll.content.transform);
                obj.transform.localScale = new Vector3(1, 1, 1);
            }
        }
    }
}