using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using TMPro;
using UnityEngine;

// 危化品用量
public class ChemicalDosageController : MonoBehaviour,HttpController
{
    private Transform dataView; // 显示对象
    
    private HttpRequestHandler httpRequestHandler;
    private int index = 0; // 数据下标
    private List<ChemicalDosageData> chemicalDosageData;
    private List<ChemicalDosageData> lastDatas; // 上一次的数据源
    private string httpUrl=HttpRequestHandler.httpIp+"/chemical/chemicalOperation/inventoryDosageStatistics";
    private string encryptText; // 加密文本
    private bool firstLoad = true;
    
    void OnEnable()
    {
        firstLoad = true;
        dataView = transform;
        httpRequestHandler = gameObject.AddComponent<HttpRequestHandler>();

        encryptText = AESHelper.Encrypt("/chemical/chemicalOperation/inventoryDosageStatistics");
        
        StartCoroutine(UpdateDataSource());
    }
    
    public IEnumerator UpdateDataSource()
    {
        while (true)
        {
            // 发起一个 POST 请求
            string jsonData = "{\"encryptText\":\"" + encryptText + "\"}";
            StartCoroutine(httpRequestHandler.PostRequest(httpUrl, jsonData, OnPostSuccess, OnError));
            yield return new WaitForSeconds(4f);
        }
    }
    
    // POST 请求成功回调
    private void OnPostSuccess(string response)
    {
        Debug.Log("POST Success 危化品用量: " + DateTime.Now);
        ReturnInfo<List<ChemicalDosageData>> returnInfo = JsonUtility.FromJson<ReturnInfo<List<ChemicalDosageData>>>(response);
        chemicalDosageData = returnInfo.data;
        if (firstLoad)
        {
            firstLoad = false;
            UpdateDataView();
        }
    }

    // 请求失败的回调
    private void OnError(string error)
    {
        Debug.LogError("Request Error: " + error);
    }

    // 更新填充数据
    private void UpdateDataView()
    {
        int count = chemicalDosageData.Count;
        
        for (int i=0;i < dataView.childCount; i++)
        {
            // (index+i)%userDatas.Count()
            // 当轮播图轮动多少次时，列表的第一个数据就应该是数据源里的第多少个，用i递增过去，当超出数据源数量时使用%将多余的拿出去以获得正确的下标

            string dosage = chemicalDosageData[(index + i) % count].TotalDosage +
                            chemicalDosageData[(index + i) % count].MeasuringUnit;
            // 危化品名称
            dataView.GetChild(i).GetChild(0).GetChild(0).GetComponent<TextMeshProUGUI>().text =
                chemicalDosageData[(index+i)%count].ChemicalName == "" ? "无":chemicalDosageData[(index+i)%count].ChemicalName;
                
            // 危化品用量
            dataView.GetChild(i).GetChild(0).GetChild(1).GetComponent<TextMeshProUGUI>().text =
                dosage == "" ? "无" : dosage;
           
        }
    }
    
    // 更新下标
    public void UpdateIndex()
    {
        // 轮播图每次轮动下标增加，下标达到数据源数量最大值时清零
        if (chemicalDosageData == null)
        {
            return;
        }
        if (index<chemicalDosageData.Count-1)
        {
            index++;
        }
        else
        {
            index = 0;
        }
        
        
        UpdateDataView();
    }
}