public async Task <bool> LoadCoverAsync(BookItem B, bool Cache)
{
if (Cache && B.CoverExist)
{
return(true);
}
if (!CoverProcess.AcquireLock(B.Entry, out var QToken))
{
goto AwaitToken;
}
if (B.IsEx())
{
X.Instance <IRuntimeCache>(XProto.WRuntimeCache).InitDownload(
B.ZItemId, X.Call <XKey[]>(XProto.WRequest, "GetBookCover", B.ZItemId)
, (e, id) =>
{
B.SaveCover(e.ResponseBytes);
QToken.TrySetResult(true);
}
, (c, i, ex) => QToken.TrySetResult(false)
, false
);
goto AwaitToken;
}
if (string.IsNullOrEmpty(B.Info.CoverSrcUrl))
{
// Use bing service
string ThumbUrl = await ImageService.GetProvider(B).GetImage();
if (string.IsNullOrEmpty(ThumbUrl))
{
QToken.TrySetResult(false);
goto AwaitToken;
}
B.Info.CoverSrcUrl = ThumbUrl;
}
// Set the referer, as it is required by some site such as fanfiction.net
new RuntimeCache(a =>
{
HttpRequest R = new WHttpRequest(a)
{
EN_UITHREAD = false
};
if (!string.IsNullOrEmpty(B.Info.OriginalUrl))
{
R.RequestHeaders.Referrer = new Uri(B.Info.OriginalUrl);
}
return(R);
}).GET(new Uri(B.Info.CoverSrcUrl)
, (e, id) =>
{
B.SaveCover(e.ResponseBytes);
QToken.TrySetResult(true);
}
, (c, i, ex) => QToken.TrySetResult(false)
, false);
AwaitToken:
return(await QToken.Task);
}