/// <summary>
/// Function to check if device is assigned to an event.
/// </summary>
/// <param name="dId"></param>
/// <param name="eId"></param>
/// <returns>True if device is assigned, false otherwise.</returns>
public Boolean DeviceAssigned(DevicesInEvent d)
{
var r = (from x in _repo.GetDevicesInEvents()
where x.DeviceId == d.DeviceId & x.EventId == d.EventId
select x).Any();
return(r);
}
public bool RemoveDeviceInEvent(DevicesInEvent d)
{
var result = false;
if (_db.DevicesInEvents.Remove(d) != null)
{
result = true;
}
_db.SaveChanges();
return(result);
}
public bool AddDeviceToEvent(DevicesInEvent d)
{
var result = false;
if (_db.DevicesInEvents.Add(d) != null)
{
result = true;
}
_db.SaveChanges();
return(result);
}
public async Task <bool> RemoveDeviceInEventAsync(DevicesInEvent d)
{
var result = false;
if (_db.DevicesInEvents.Remove(d) != null)
{
result = true;
}
await _db.SaveChangesAsync();
return(result);
}
public async Task <bool> AddDeviceToEventAsync(DevicesInEvent d)
{
var result = false;
if (await _db.DevicesInEvents.AddAsync(d) != null)
{
result = true;
}
await _db.SaveChangesAsync();
return(result);
}
/// <summary>
/// Function to assign device to an event.
/// </summary>
/// <param name="dId"></param>
/// <param name="eId"></param>
/// <returns>Returns instance of the assignment.</returns>
public async Task <DevicesInEvent> AddDeviceInEventAsync(int dId, int eId)
{
var d = new DevicesInEvent {
DeviceId = dId, EventId = eId
};
if (DeviceAssigned(d) == false)
{
await _repo.AddDeviceToEventAsync(d);
return(d);
}
else
{
var n = await GetDeviceByIdAsync(dId);
throw new Exception(n.Name + " is already assigned to this event");
}
}
/// <summary>
/// Function to unassign device from event.
/// </summary>
/// <param name="d"></param>
/// <returns>True if success, false otherwise.</returns>
public async Task <Boolean> RemoveDeviceInEventAsync(DevicesInEvent d)
{
return(await _repo.RemoveDeviceInEventAsync(d));
}
