public async Task <Session> UpdateSessionCount(SessionOperationViewModel sessionOperationViewModel)
{
using (var db = new MercuryDataContext())
{
var session
= await db.Sessions
.Where(m => m.Id == sessionOperationViewModel.SessionId)
.FirstOrDefaultAsync();
switch (sessionOperationViewModel.SessionOperation)
{
case SessionOperationEnum.INCREMENT:
session.CurrentCount = session.CurrentCount + 1;
break;
case SessionOperationEnum.DECREMENT:
var count = session.CurrentCount - 1;
session.CurrentCount = count >= 0 ? count : 0;
break;
default: break;
}
session.DateModified = DateTime.UtcNow;
session.UpdatedTimesCount = session.UpdatedTimesCount + 1;
db.Sessions.Update(session);
await db.SaveChangesAsync();
return(session);
}
}
public async Task DeleteSession(Session session)
{
using (var db = new MercuryDataContext())
{
db.Sessions.Remove(session);
await db.SaveChangesAsync();
}
}
public async Task CreateSession(Session session)
{
using (var db = new MercuryDataContext())
{
db.Sessions.Add(session);
await db.SaveChangesAsync();
}
}
public async Task CreateNewUser(User user)
{
using (var db = new MercuryDataContext())
{
db.Users.Add(user);
await db.SaveChangesAsync();
}
}
public async Task RemoveUserFromSession(User user, Session session)
{
using (var db = new MercuryDataContext())
{
var existingUserSession
= await db.UserSessions
.Where(s => s.UserId == user.Id && s.SessionId == session.Id)
.FirstOrDefaultAsync();
db.UserSessions.Remove(existingUserSession);
await db.SaveChangesAsync();
}
}
public async Task AddUserToSession(User user, Session session)
{
using (var db = new MercuryDataContext())
{
var existingUserSession
= await db.UserSessions
.Where(s => s.UserId == user.Id && s.SessionId == session.Id)
.FirstOrDefaultAsync();
if (existingUserSession != null)
{
return;
}
var sessionUser = new UserSession
{
UserId = user.Id,
SessionId = session.Id
};
db.UserSessions.Add(sessionUser);
await db.SaveChangesAsync();
}
}