public async Task <IHttpActionResult> CreateGroup(string groupName, int ownerID)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (string.IsNullOrWhiteSpace(groupName))
{
return(BadRequest());
}
var friend = await db.Users.FirstOrDefaultAsync(u => u.UserID == ownerID);
if (friend == null)
{
NotFound();
}
var createTime = DateTime.Now;
await db.CreateAGroup(ownerID, groupName);
var group = await db.Groups.Where(info => info.Owner == ownerID &&
info.GroupName == groupName &&
info.CreateTime >= createTime).FirstOrDefaultAsync();
return(Json <int>(group.GroupID));
}