public async Task GenerateReportFile([FromQuery] DateTime dateFrom, [FromQuery] DateTime dateTo, [FromQuery] string tagIds, [FromQuery] string type)
{
var requestModel = new GenerateReportModel();
var tags = tagIds?.Split(",").ToList();
if (tags != null)
{
foreach (string tag in tags)
{
requestModel.TagIds.Add(int.Parse(tag));
}
}
requestModel.DateFrom = dateFrom;
requestModel.DateTo = dateTo;
requestModel.Type = type;
var result = await _reportService.GenerateReportFile(requestModel);
const int bufferSize = 4086;
byte[] buffer = new byte[bufferSize];
Response.OnStarting(async() =>
{
if (!result.Success)
{
Response.ContentLength = result.Message.Length;
Response.ContentType = "text/plain";
Response.StatusCode = 400;
byte[] bytes = Encoding.UTF8.GetBytes(result.Message);
await Response.Body.WriteAsync(bytes, 0, result.Message.Length);
await Response.Body.FlushAsync();
}
else
{
await using var wordStream = result.Model;
int bytesRead;
Response.ContentLength = wordStream.Length;
Response.ContentType = requestModel.Type == "docx"
? "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
while ((bytesRead = wordStream.Read(buffer, 0, buffer.Length)) > 0 &&
!HttpContext.RequestAborted.IsCancellationRequested)
{
await Response.Body.WriteAsync(buffer, 0, bytesRead);
await Response.Body.FlushAsync();
}
}
});
}
public async Task GenerateReportFile(GenerateReportModel requestModel)
{
OperationDataResult <FileStreamModel> result = await _reportService.GenerateReportFile(requestModel);
const int bufferSize = 4086;
byte[] buffer = new byte[bufferSize];
Response.OnStarting(async() =>
{
try
{
if (!result.Success)
{
Response.ContentLength = result.Message.Length;
Response.ContentType = "text/plain";
Response.StatusCode = 400;
byte[] bytes = Encoding.UTF8.GetBytes(result.Message);
await Response.Body.WriteAsync(bytes, 0, result.Message.Length);
await Response.Body.FlushAsync();
}
else
{
using (FileStream excelStream = result.Model.FileStream)
{
int bytesRead;
Response.ContentLength = excelStream.Length;
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
while ((bytesRead = excelStream.Read(buffer, 0, buffer.Length)) > 0 &&
!HttpContext.RequestAborted.IsCancellationRequested)
{
await Response.Body.WriteAsync(buffer, 0, bytesRead);
await Response.Body.FlushAsync();
}
}
}
}
finally
{
if (!string.IsNullOrEmpty(result?.Model?.FilePath) &&
System.IO.File.Exists(result.Model.FilePath))
{
System.IO.File.Delete(result.Model.FilePath);
}
}
});
}