private async Task HandleExceptionAsync(Exception exception)
{
bool acceptJson = _context.AcceptsJsonResult();
switch (exception)
{
case ValidationException e:
if (acceptJson)
{
await _context.WriteStatusCodeResult(StatusCodes.Status400BadRequest, new { e.Errors });
}
else
{
await _context.WriteViewResult("Errors", e.Errors, e.Model);
}
break;
case UnauthenticatedException e:
await _context.ChallengeAsync();
break;
case UnauthorizedException e:
if (acceptJson)
{
await _context.WriteStatusCodeResult(StatusCodes.Status401Unauthorized, e.Message);
}
else
{
await _context.WriteErrorViewResult(e.Message);
}
break;
case BadRequestException e:
if (acceptJson)
{
await _context.WriteStatusCodeResult(StatusCodes.Status400BadRequest, e.Message);
}
else
{
await _context.WriteErrorViewResult(e.Message);
}
break;
case NotFoundException e:
if (acceptJson)
{
await _context.WriteStatusCodeResult(StatusCodes.Status404NotFound, e.Message);
}
else
{
await _context.WriteErrorViewResult(e.Message);
}
break;
default:
var message = new StringBuilder();
message.AppendLine("Unexpected Error occurred while processing the request.");
message.AppendLine("Error Date: " + DateTime.UtcNow);
message.AppendLine(" ");
message.AppendLine("==> User Info <==");
message.AppendLine("UserId: " + _context.User.Id());
message.AppendLine("Email: " + _context.User.Email());
message.AppendLine("IP Address: " + _context.Connection.RemoteIpAddress);
message.AppendLine(" ");
var r = _context.Request;
message.AppendLine("==> General <== ");
foreach (var key in r.RouteValues.Keys)
{
message.AppendLine(key + ": " + r.RouteValues[key]);
}
message.AppendLine("Method: " + r.Method);
if (r.Headers["referer"].Count > 0)
{
message.AppendLine("Referer: " + r.Headers["referer"].ToString());
}
message.AppendLine(" ");
if (r.Query.Keys.Count > 0)
{
message.AppendLine("==> Query Parameters <==");
foreach (var key in r.Query.Keys)
{
message.AppendLine(key + ": " + r.Query[key]);
}
message.AppendLine(" ");
}
if (r.HasFormContentType)
{
message.AppendLine("==> Form Data <==");
foreach (var key in r.Form.Keys)
{
message.AppendLine(key + ": " + r.Form[key]);
}
message.AppendLine(" ");
}
message.AppendLine("==> Exception Details <==");
message.AppendLine(exception.ToString());
_logger.LogError(message.ToString());
if (acceptJson)
{
await _context.WriteStatusCodeResult(StatusCodes.Status404NotFound, exception.Message);
}
else
{
await _context.WriteStatusCodeResult(StatusCodes.Status404NotFound);
}
break;
}
}