private async Task <byte[]> GetImageDataAsync(string hash, IdolImageDataType type)
{
var u = IdolImageData.GetImageUrl(hash, type);
using (var wc = new WebClient())
{
try
{
wc.Headers["User-Agent"] = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:52.0) Gecko/20100101 Firefox/52.0";
return(await wc.DownloadDataTaskAsync(u));
}
catch
{
return(null);
}
}
}
public async Task <HttpResponseMessage> GetImageAsync(string hash, IdolImageDataType type)
{
using (var db = new ImasCDDbContext())
{
var d = await db.IdolImageData.FirstOrDefaultAsync(_ => _.Hash == hash && _.Type == type);
if (d != null)
{
if (d.Data == null)
{
throw new HttpResponseException(HttpStatusCode.NotFound);
}
return(CreateFileResult(d.Data, "image/jpeg"));
}
var u = IdolImageData.GetImageUrl(hash, type);
byte[] data;
using (var wc = new WebClient())
{
try
{
data = await wc.DownloadDataTaskAsync(u);
}
catch
{
data = null;
}
}
db.IdolImageData.Add(new IdolImageData()
{
Hash = hash,
Type = type,
Data = data
});
await db.SaveChangesAsync();
if (data == null)
{
throw new HttpResponseException(HttpStatusCode.NotFound);
}
return(CreateFileResult(data, "image/jpeg"));
}
}