public async Task <IActionResult> DownloadCertificate(int id)
{
var customer = await _workContext.GetCurrentCustomerAsync();
if (!await _customerService.IsRegisteredAsync(customer))
{
return(Challenge());
}
//ensure that Avalara tax provider is active
if (!await _taxPluginManager.IsPluginActiveAsync(AvalaraTaxDefaults.SystemName, customer))
{
return(RedirectToRoute("CustomerInfo"));
}
if (!_avalaraTaxSettings.EnableCertificates)
{
return(RedirectToRoute("CustomerInfo"));
}
//ACL
if (_avalaraTaxSettings.CustomerRoleIds.Any())
{
var customerRoleIds = await _customerService.GetCustomerRoleIdsAsync(customer);
if (!customerRoleIds.Intersect(_avalaraTaxSettings.CustomerRoleIds).Any())
{
return(RedirectToRoute("CustomerInfo"));
}
}
//try to get a file by the identifier
var file = await _avalaraTaxManager.DownloadCertificateAsync(id);
if (file is null)
{
return(InvokeHttp404());
}
return(File(file.Data, file.ContentType, file.Filename?.Split(';')?.FirstOrDefault() ?? "certificate"));
}
