public static async Task <List <string> > GetFileDownloadLink(IEnumerable <YunFile> files)
{
var metas = await BaiduYun.GetFileMetadata(files);
if (metas == null)
{
return(null);
}
var ret = new List <string>();
foreach (var meta in metas)
{
if (meta.dlink == null)
{
return(null);
}
var url = meta.dlink + String.Format("&cflg={0}", Utils.GetCookieValue("cflag", Constants.PAN_URL));
using (var request = Utils.GetRequest(url)) {
request.Headers.Add("Accept", Constants.ACCEPT_HTML);
using (var response = await Utils.RequestNoRedirectAsync(request)) {
if (response != null && response.StatusCode == Windows.Web.Http.HttpStatusCode.Found)
{
ret.Add(response.Headers.Location.ToString());
}
else
{
var guanjia = await BaiduYun.GuanjiaDownload(meta.path);
if (guanjia != null)
{
ret.Add(guanjia);
}
else
{
return(null);
}
}
}
}
}
return(ret);
}
public async Task AddTask(YunFile file, IStorageItem location)
{
if (file.isdir == 0)
{
var url = await BaiduYun.GetFileDownloadLink(new[] { file });
if (url == null)
{
return;
}
await NewAsyncDownloadTask(url[0], location as IStorageFile);
}
else
{
var subfolder = await(location as IStorageFolder).CreateFolderAsync(file.server_filename, CreationCollisionOption.OpenIfExists);
var tasks = await HandleFolder(file, subfolder);
await Task.WhenAll(tasks);
}
}
private async Task <List <Task> > HandleFolder(YunFile folder, IStorageFolder location)
{
var tasks = new List <Task>();
var files = new List <YunFile>();
foreach (var file in await BaiduYun.GetFileList(folder.path))
{
if (file.isdir == 1)
{
var subfolder = await location.CreateFolderAsync(file.server_filename, CreationCollisionOption.OpenIfExists);
tasks.AddRange(await HandleFolder(file, subfolder));
}
else
{
files.Add(file);
}
}
tasks.AddRange(await NewAsyncDownloadTasks(files, location));
return(tasks);
}
private async Task <List <Task> > NewAsyncDownloadTasks(IEnumerable <YunFile> files, IStorageFolder location)
{
var urllist = await BaiduYun.GetFileDownloadLink(files);
var tasks = new List <Task>();
if (urllist == null)
{
return(tasks);
}
var url = urllist.GetEnumerator();
foreach (var file in files)
{
if (!url.MoveNext())
{
return(tasks);
}
var fileitem = await location.CreateFileAsync(file.server_filename, CreationCollisionOption.GenerateUniqueName);
tasks.Add(NewAsyncDownloadTask(url.Current, fileitem));
}
return(tasks);
}
public static async Task <string> GetFileDownloadLink(YunFile file)
{
var url = await BaiduYun.GetFileDownloadLink(new List <YunFile>() { file });
return(url.FirstOrDefault());
}