/// <summary>
/// 下载图片
/// </summary>
/// <param name="url"></param>
/// <returns></returns>
private string DownloadImage(string url)
{
string localFile = Path.GetTempPath() + Guid.NewGuid().ToString("N");
// 下载
bool isSuccessed = StorageUtils.DownloadImage(url, localFile);
if (isSuccessed)
{
try
{
string md5 = Hash.GetMD5HashFromFile(localFile);
if (File.Exists(localFile))
{
string destFile = $"{StorageManager.GetCover()}/{md5}";
try
{
File.Delete(destFile);
}
catch { }
// 移动到指定位置
File.Move(localFile, destFile);
return(md5);
}
else
{
return(null);
}
}
catch (Exception e)
{
Utils.Debugging.Console.PrintLine("DownloadImage()发生异常: {0}", e);
LogManager.Error("StorageCover", e);
return(null);
}
}
return(null);
}
/// <summary>
/// 获取封面
/// </summary>
/// <param name="aid"></param>
/// <param name="bvid"></param>
/// <param name="cid"></param>
/// <param name="url"></param>
/// <returns></returns>
public string GetCover(long avid, string bvid, long cid, string url)
{
CoverDb coverDb = new CoverDb();
Cover cover = coverDb.QueryByUrl(url);
// 如果存在，直接返回
// 如果不存在，则先下载
if (cover != null)
{
string coverPath = $"{StorageManager.GetCover()}/{cover.Md5}";
if (File.Exists(coverPath))
{
Cover newCover = new Cover
{
Avid = avid,
Bvid = bvid,
Cid = cid,
Url = url,
Md5 = cover.Md5
};
coverDb.Update(newCover);
//coverDb.Close();
return($"{StorageManager.GetCover()}/{cover.Md5}");
}
else
{
string md5 = DownloadImage(url);
if (md5 != null)
{
Cover newCover = new Cover
{
Avid = avid,
Bvid = bvid,
Cid = cid,
Url = url,
Md5 = md5
};
coverDb.Update(newCover);
//coverDb.Close();
return($"{StorageManager.GetCover()}/{md5}");
}
else
{
//coverDb.Close();
return(null);
}
}
}
else
{
string md5 = DownloadImage(url);
if (md5 != null)
{
Cover newCover = new Cover
{
Avid = avid,
Bvid = bvid,
Cid = cid,
Url = url,
Md5 = md5
};
coverDb.Insert(newCover);
//coverDb.Close();
return($"{StorageManager.GetCover()}/{md5}");
}
else
{
//coverDb.Close();
return(null);
}
}
}
