/// <summary>
/// 构造函数
/// </summary>
/// 时间：2015-12-17 11:13
/// 备注：
public WebUploadFile()
{
uploadFileSetting = new UploadFileConfig()
{
FileDirectory = "/upload",
FileType = ".pdf,.xls,.xlsx,.doc,.docx,.txt,.png,.jpg,.gif",
MaxSizeM = 10,
PathSaveType = UploadFileSaveType.DateTimeNow,
IsRenameSameFile = true
};
}
public async Task <ContentView> UploadFile(ContentView newView, UploadFileConfig fileConfig, Stream fileData, long requester)
{
fileData.Seek(0, SeekOrigin.Begin);
if (fileData.Length == 0)
{
throw new RequestException("No data uploaded!");
}
if (fileConfig.quantize >= 0 && (fileConfig.quantize < config.MinQuantize || fileConfig.quantize > config.MaxQuantize))
{
throw new RequestException($"Quantize must be between {config.MinQuantize} and {config.MaxQuantize}");
}
int trueQuantize = 0;
var tempLocation = GetAndMakeTempPath(); //Work is done locally for quantize/etc
var manipResult = await imageManip.FitToSizeAndSave(fileData, tempLocation, config.MaxSize);
newView.literalType = manipResult.MimeType;
AddImageRender(manipResult.RenderCount + manipResult.LoadCount);
try
{
var meta = new Dictionary <string, object>()
{
{ "size", manipResult.SizeInBytes },
{ "width", manipResult.Width },
{ "height", manipResult.Height }
};
//OK the quantization step. This SHOULD modify the view for us!
if (fileConfig.quantize > 0)
{
trueQuantize = await TryQuantize(fileConfig.quantize, newView, tempLocation);
}
if (trueQuantize > 0)
{
meta["quantize"] = trueQuantize;
}
//We now have the metadata
newView.meta = JsonConvert.SerializeObject(meta);
using var tempWriter = dbFactory.CreateWriter();
//This is QUITE dangerous: a file could be created in the api first and THEN the file write fails!
newView = await tempWriter.WriteAsync(newView, requester);
try
{
await SaveMainDataAsync(tempLocation, newView.hash, newView.literalType ?? "");
}
catch (Exception ex)
{
logger.LogError($"FILE WRITE '{newView.hash}'({newView.id}) FAILED: {ex}");
await tempWriter.DeleteAsync <ContentView>(newView.id, requester);
}
}
finally
{
System.IO.File.Delete(tempLocation);
}
//The view is already done.
return(newView);
}