using Assets.Scripts;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;

public class DownloadController : PFUIPanel
{
    // Start is called before the first frame update
    Transform Button,Loading,Exit;
    ScrollRect scroll;
    string path;
    [SerializeField] Transform log;
    void Start()
    {
        Button = transform.Find("Panel/BtnConfirm");
        Loading = transform.Find("Panel/LoadingContainer");
        scroll = transform.Find("Panel/Scroll View").GetComponent<ScrollRect>();
        Exit = transform.Find("Panel/Exit");
        UIManager.AddEvent(Exit.gameObject, UnityEngine.EventSystems.EventTriggerType.PointerClick, (b) =>
        {
            Utils.showToast(gameObject, "Please update to the latest version.");
        });
        SetType(false);
        //Button.GetComponent<Button>().enabled = false;
        //Button.GetComponent<Button>().interactable = false;
        path = Application.persistentDataPath + "/PowerFun.exe";
        UIManager.AddEvent(Button.gameObject, UnityEngine.EventSystems.EventTriggerType.PointerClick, (b) =>
         {
             Application.Quit();
             Utils.ExecFile(path);
         });
        //transform
        if (App.UpdateObject != null) 
        {
            StartCoroutine(DownLoadExe(App.UpdateObject.Url, path, (a, b, isComplete) =>
            {
                transform.Find("Panel/LoadingContainer/Text").GetComponent<Text>().text = $"Downloaded {a.ToString("#0")}M / {b.ToString("#0")}M";// string.Format(, a, b);
                transform.Find("Panel/LoadingContainer/Loading").GetComponent<Image>().fillAmount = (float)(a / b);
                if (isComplete)
                {
                    SetType(true);
                    PlayerPrefs.SetString("exeVersion", App.UpdateObject.Code);
                    new FileInfo(path + ".pfdownload").MoveTo(path);
                }
            }));
            for (var i = 0; i < App.UpdateObject.UpdateLog.Count; i++) 
            {
                var newLog = Instantiate<Transform>(log);
                newLog.GetComponent<DownloadLog>().Initial(App.UpdateObject.UpdateLog[i]);
                if (i == App.UpdateObject.UpdateLog.Count - 1) 
                {
                    newLog.GetComponent<DownloadLog>().HideLine();
                }
                newLog.SetParent(scroll.content);
                newLog.localScale = Vector3.one;
            }
        }
    }
    /*下载文件*/
    IEnumerator DownLoadExe(string url, string desFileName, Action<double, double, bool> OnDownloadProgressEvent)
    {
        string version = null;
        if (App.UpdateObject != null)
        {
            version = App.UpdateObject.Code;
        }
        if (File.Exists(desFileName))
        {
            //if(PlayerPrefs.GetString("exeVersion")==)
            if (version == null)
            {
                yield break;
            }
            else
            {
                if (version == PlayerPrefs.GetString("exeVersion"))
                {
                    Application.Quit();
                    Utils.ExecFile(desFileName);
                    yield break;
                }
                else
                {
                    File.Delete(desFileName);
                }
            }

            //File.Delete(desFileName);
        }
        if (File.Exists(desFileName + ".pfdownload"))
        {
            File.Delete(desFileName + ".pfdownload");
        }
        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
        request.Timeout = 5000;
        WebResponse response = request.GetResponse();
        //UnityWebRequest request = UnityWebRequest.Get(url);
        //yield return request.SendWebRequest();
        int packLength = 1024 * 20;
        int nReadSize = 0;
        byte[] nbytes = new byte[packLength];
        double dDownloadedLength = 0, dTotalLength = 0;
        long countLength = response.ContentLength;
        using (FileStream fs = new FileStream(desFileName + ".pfdownload", FileMode.Create))
        using (Stream netStream = response.GetResponseStream())
        {
            nReadSize = netStream.Read(nbytes, 0, packLength);
            while (nReadSize > 0)
            {
                fs.Write(nbytes, 0, nReadSize);
                nReadSize = netStream.Read(nbytes, 0, packLength);
                dDownloadedLength = fs.Length * 1.0 / (1024 * 1024);
                dTotalLength = countLength * 1.0 / (1024 * 1024);
                OnDownloadProgressEvent.Invoke(dDownloadedLength, dTotalLength, false);
                //string ss = string.Format("已下载 {0:F}M / {1:F}M", dDownloadedLength, dTotalLength);
                //Debug.Log(ss);
                yield return null;
            }
        }
        OnDownloadProgressEvent.Invoke(dDownloadedLength, dTotalLength, true);
    }
    void SetType(bool f) 
    {
        // true 显示 button false 显示loading
        Button.gameObject.SetActive(f);
        Loading.gameObject.SetActive(!f);
    }
    // Update is called once per frame
    void Update()
    {
        
    }
}