public async Task <TripDto> CreateAsync(CreateTripDto createTripDto)
{
var tripEntity = _mapper.Map <TripEntity>(createTripDto);
var currentUserId = _currentUserService.UserId;
await ValidateUserExistsByIdAsync(currentUserId);
await ValidateTripRoleExistsByIdAsync((int)TripRoles.Admin);
var tripSubscriberEntity = new TripSubscriberEntity()
{
UserId = currentUserId,
Trip = tripEntity
};
var tripSubscriberRoleEntity = new TripSubscriberRoleEntity()
{
TripSubscriber = tripSubscriberEntity,
TripRoleId = (int)TripRoles.Admin
};
await _tripFlipDbContext.TripSubscribersRoles.AddAsync(tripSubscriberRoleEntity);
await _tripFlipDbContext.SaveChangesAsync();
var tripDto = _mapper.Map <TripDto>(tripEntity);
return(tripDto);
}
public async Task GrantTripRoleAsync(GrantTripRolesDto grantTripRolesDto)
{
// Validate user-to-grant-role-to exists.
var userToGrantRole = await _tripFlipDbContext.Users
.SingleOrDefaultAsync(user => user.Id == grantTripRolesDto.UserId);
EntityValidationHelper.ValidateEntityNotNull(
userToGrantRole, ErrorConstants.UserNotFound);
// Validate trip exists.
var trip = await _tripFlipDbContext.Trips
.Include(t => t.TripSubscribers)
.ThenInclude(subscribers => subscribers.TripRoles)
.FirstOrDefaultAsync(t => t.Id == grantTripRolesDto.TripId);
EntityValidationHelper.
ValidateEntityNotNull(trip, ErrorConstants.TripNotFound);
// Validate current user is trip admin.
await EntityValidationHelper.ValidateCurrentUserTripRoleAsync(
_currentUserService,
_tripFlipDbContext,
grantTripRolesDto.TripId,
TripRoles.Admin,
ErrorConstants.NotTripAdmin);
// Remove invalid values from requested role id collection.
var realTripRolesIds = (IEnumerable <int>)Enum.GetValues(typeof(TripRoles));
grantTripRolesDto.TripRoleIds = grantTripRolesDto
.TripRoleIds
.Distinct()
.Where(requestedId => realTripRolesIds.Contains(requestedId));
var tripSubscriber = trip.TripSubscribers
.FirstOrDefault(subscribers => subscribers.UserId == grantTripRolesDto.UserId);
// Subscribe given user to trip if he's not subscribed.
if (tripSubscriber is null)
{
tripSubscriber = new TripSubscriberEntity()
{
TripId = grantTripRolesDto.TripId,
UserId = grantTripRolesDto.UserId
};
}
// Remove subscriber's current set of roles.
if (!(tripSubscriber.TripRoles is null))
{
_tripFlipDbContext.TripSubscribersRoles.RemoveRange(
tripSubscriber.TripRoles);
}
// Add requested set of roles to subscriber.
tripSubscriber.TripRoles = grantTripRolesDto.TripRoleIds
.Select(tripRoleId => new TripSubscriberRoleEntity()
{
TripRoleId = tripRoleId,
TripSubscriber = tripSubscriber
}).ToList();
await _tripFlipDbContext.SaveChangesAsync();
}