306 lines
11 KiB
C#
306 lines
11 KiB
C#
///////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////断点续存的方式下载网络资源/////////////////////////////////////////
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/////////////////////////TODO:UI显示下载进度///暂时使用打印替代（平板不需要）//////////////////////
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///////////////////////////////////////////////////////////////////////////////////////////////////
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using UnityEngine;
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using UnityEngine.Events;
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using UnityEngine.Networking;
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public class DownloadAssets : MonoBehaviour
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{
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public static DownloadAssets Instance;
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//五亿字节为一段 0.1G 100mb
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double loadedBytes = 100000000;
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/// <summary>
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/// 存放正在下载资源的UWR事件
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/// </summary>
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internal Dictionary<string, UnityWebRequest> AssetsUWR = new Dictionary<string, UnityWebRequest>();
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/// <summary>
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/// 创建新的资源图标
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/// </summary>
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internal UnityEvent<Assets,string> CreateAssetcell = new UnityEvent<Assets, string>();
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/// <summary>
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/// 更新资源图标
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/// </summary>
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internal UnityEvent<Assets, string> UpdateAssetcell = new UnityEvent<Assets, string>();
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/// <summary>
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/// 删除资源图标
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/// </summary>
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internal UnityEvent<Assets, string> DeleteAssetcell = new UnityEvent<Assets, string>();
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void Awake()
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{
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if (Instance == null)
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Instance = this;
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}
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/// <summary>
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/// 下载资源
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/// </summary>
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/// <param name="fullUrl">资源url</param>
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/// <param name="savePath">本地存放位置</param>
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/// <param name="assets">资源信息</param>
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/// <param name="isAdded">是否是新增资源</param>
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/// <param name="isIcon">是否是封面</param>
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public void DownLoad(string fullUrl, string savePath, Assets assets, bool isAdded, bool isIcon)
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{
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//完整的接口
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fullUrl = WebNet.DownAssetsUrl + fullUrl;
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//Debug.Log(fullUrl);
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StartCoroutine(RenewDownLoad(fullUrl, savePath, assets, isAdded, isIcon));
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}
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/// <summary>
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/// 断点续存
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/// </summary>
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/// <param name="fullUrl">资源url</param>
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/// <param name="savePath">本地存放位置</param>
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IEnumerator RenewDownLoad(string fullUrl, string savePath, Assets assets, bool isAdded, bool isIcon)
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{
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long countLength;
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using (UnityWebRequest uwrGetCount = UnityWebRequest.Head(fullUrl))
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{
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yield return uwrGetCount.SendWebRequest();
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//获取资源字节长度
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long.TryParse(uwrGetCount.GetResponseHeader("Content-Length"), out countLength);
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//Debug.Log($"{savePath}:{countLength}");
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}
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//long countLength = assets.file_size;
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////Debug.LogError(fullUrl);
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//if (assets.file_size > 1000000)
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//{
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// using (UnityWebRequest uwrGetCount = UnityWebRequest.Head(fullUrl))
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// {
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// yield return uwrGetCount.SendWebRequest();
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// //获取资源字节长度
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// countLength = long.Parse(uwrGetCount.GetResponseHeader("Content-Length"));
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// //Debug.Log($"{savePath}:{countLength}");
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// }
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//}
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using (UnityWebRequest unityWebRequest = UnityWebRequest.Get(fullUrl))
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{
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//append设置为true文件写入方式为接续写入，不覆盖原文件。
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unityWebRequest.downloadHandler = new DownloadHandlerFile(savePath, true);
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//创建文件
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FileInfo file = new FileInfo(savePath);
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string filename = Path.GetFileName(savePath);//资源名字
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if (!AssetsUWR.ContainsKey(filename))
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AssetsUWR.Add(filename, unityWebRequest);
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//当前下载的文件长度
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long fileLength = file.Length;
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//请求网络数据从第fileLength到最后的字节
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unityWebRequest.SetRequestHeader("Range", $"bytes={fileLength}-");//设置Range值
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if (!string.IsNullOrEmpty(unityWebRequest.error))
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{
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Debug.LogError($"下载失败{unityWebRequest.error}");
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}
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string jsonPath = $"{Path.GetDirectoryName(savePath)}/{assets.resource_name}.json";
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//Debug.Log(jsonPath);
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double currProgress = 0;
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if (fileLength < countLength)
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{
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unityWebRequest.SendWebRequest();
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while (!unityWebRequest.isDone)
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{
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if (File.Exists(jsonPath))
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{
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File.Delete(jsonPath);
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}
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double lastProgress = (double)fileLength / countLength;//上次下载的进度
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//Debug.Log($"{savePath}上次下载：{(lastProgress * 100).ToString("0.00")}% ");
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double newProgress = unityWebRequest.downloadProgress;
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currProgress = lastProgress + newProgress * (1 - lastProgress);
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//Debug.Log($"{savePath}已经下载：{(currProgress * 100).ToString("0.00")}% ");
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if (savePath.Contains("mp4"))
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{
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//更新进度条
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//UpdateVideoProgressUIEvent.Invoke(filename, currProgress);
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}
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else if (savePath.Contains("apk"))
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{
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//更新进度条
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//UpdateAppProgressUIEvent.Invoke(filename, currProgress);
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}
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else
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{
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//其他资源更新进度条
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}
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//超过一定的字节关闭现在的协程，开启新的协程，将资源分段下载
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if (unityWebRequest.downloadedBytes >= loadedBytes)
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{
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Coroutine coroutine = StartCoroutine(RenewDownLoad(fullUrl, savePath, assets, isAdded, isIcon));
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StopCoroutine(coroutine);
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//如果 UnityWebRequest 在进行中，就停止。
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unityWebRequest.Abort();
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AssetsUWR.Remove(filename);
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if (!string.IsNullOrEmpty(unityWebRequest.error))
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{
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Debug.LogError($"{filename}下载失败:{unityWebRequest.error}");
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}
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Debug.Log($"开启新的携程继续下载{filename}");
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yield return StartCoroutine(RenewDownLoad(fullUrl, savePath, assets, isAdded, isIcon));
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}
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yield return null;
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}
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}
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else
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{
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//资源是完整的
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DoneRecordInfo(savePath, assets, isIcon);
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}
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if (unityWebRequest.downloadHandler.isDone)
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{
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DoneRecordInfo(savePath, assets, isAdded, isIcon);
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}
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}
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}
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/// <summary>
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/// 资源是完整的,直接记录下载完成信息
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/// </summary>
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void DoneRecordInfo(string savePath, Assets assets, bool isIcon)
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{
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AssetsUWR.Remove(Path.GetFileName(savePath));
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if (isIcon)
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return;//如果下载的是封面，则不记录
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RecordDownloaddoneAssetsinfo(assets);
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}
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/// <summary>
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/// 下载完成记录信息
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/// </summary>
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void DoneRecordInfo(string savePath, Assets assets, bool isAdded, bool isIcon)
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{
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AssetsUWR.Remove(Path.GetFileName(savePath));
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string extension = Path.GetExtension(savePath).ToLower();
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switch (assets.type)//1:apk 2:video 3:image 4:file 5:maps 6:pc应用
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{
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case 1:
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if (isIcon)
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{
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//Debug.Log($"封面图片：{assets.resource_name}下载完成");
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if (isAdded)//资源是新增
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{
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Debug.Log("创建资源封面");
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CreateAssetcell.Invoke(assets, savePath);
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}
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else//资源是更新
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{
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Debug.Log("更改资源封面");
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UpdateAssetcell.Invoke(assets, savePath);
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}
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return;
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}
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else
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{
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Debug.Log($"app资源：{assets.resource_name}下载完成");
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//关闭下载进度条
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PicoAPI._Instance.UnInstallApp(assets.brief);
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GameTools.Share.Delay(5f, () =>
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{
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PicoAPI._Instance.InstallApk(savePath);
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});
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}
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break;
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case 2:
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if (isIcon)
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{
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//Debug.Log($"封面图片：{assets.resource_name}下载完成");
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if (isAdded)//资源是新增
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{
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Debug.Log("创建资源封面");
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CreateAssetcell.Invoke(assets, savePath);
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}
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else//资源是更新
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{
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Debug.Log("更改资源封面");
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UpdateAssetcell.Invoke(assets, savePath);
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}
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return;
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}
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else
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{
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Debug.Log($"mp4资源：{assets.resource_name}下载完成");
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//关闭下载进度条
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}
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break;
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case 3:
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Debug.Log($"图片资源：{assets.resource_name}下载完成");
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//关闭下载进度条
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break;
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case 4:
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Debug.Log($"文件资源：{assets.resource_name}下载完成");
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//关闭下载进度条
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break;
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case 5:
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Debug.Log($"地图资源：{assets.resource_name}下载完成");
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//关闭下载进度条
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break;
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case 6:
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if (isIcon)
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{
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//Debug.Log($"封面图片：{assets.resource_name}下载完成");
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if (isAdded)//资源是新增
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{
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Debug.Log("创建资源封面");
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CreateAssetcell.Invoke(assets, savePath);
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}
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else//资源是更新
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{
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Debug.Log("更改资源封面");
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UpdateAssetcell.Invoke(assets, savePath);
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}
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return;
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}
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else
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{
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Debug.Log($"pc应用资源：{assets.resource_name}下载完成");
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//关闭下载进度条
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}
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break;
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default:
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//其他未知资源
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Debug.Log($"其他资源：{assets.resource_name}下载完成");
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break;
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}
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RecordDownloaddoneAssetsinfo(assets);
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}
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/// <summary>
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/// 记录下载完成的资源信息
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/// </summary>
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public void RecordDownloaddoneAssetsinfo(Assets assets)
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{
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string json = JsonUtility.ToJson(assets);
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byte[] bytes = Encoding.UTF8.GetBytes(json);
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string path = $"{Config.AssetsInfoPath}/{assets.resource_name}.json";
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GameTools.WriteFile(path, bytes);
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}
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private void OnDestroy()
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{
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foreach (var item in AssetsUWR.Values)
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{
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item.Abort();
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}
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}
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}
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