private async Task <GroupModel> TryToHandle(CreateGroupCommand request)
{
User admin = await _context.Users.FindAsync(request.Admin) ?? throw new InvalidCommandException($"El usuario administrador con id {request.Admin} no existe");
await ValidateMembersExists(request);
var toCreate = new Group()
{
Name = request.Name,
Admin = await _context.Users.FindAsync(request.Admin),
};
await _context.Groups.AddAsync(toCreate);
await _context.SaveChangesAsync();
if (!request.Memberships.Contains(request.Admin))
{
request.Memberships.Add(toCreate.Admin.Id);
}
Domain.Membership[] memberships = await Task.WhenAll(request.Memberships.Select(i => GetMemberships(i, toCreate)));
toCreate.Memberships = memberships;
await _context.SaveChangesAsync();
return(new GroupModel(toCreate));
}
private async Task <Unit> TryToHandle(LeaveGroupCommand request)
{
User user = await _context.Users.FindAsync(request.UserId) ?? throw new InvalidCommandException($"El usuario con id {request.UserId} no existe");
Group group = await _context.Groups.Include(group1 => group1.Admin).FirstOrDefaultAsync(g => g.Id == request.GroupId) ?? throw new InvalidCommandException($"El grupo con id {request.GroupId} no existe");
if (group.Admin.Id == request.UserId)
{
throw new InvalidCommandException("El administrador no puede irse del grupo");
}
Domain.Membership membership = await _context.Memberships.FirstOrDefaultAsync(m => m.Group.Id == group.Id && m.User.Id == user.Id) ?? throw new InvalidCommandException($"Usuario no es parte del grupo");
group.Memberships.Remove(membership);
_context.Memberships.Remove(membership);
var toDelete = _context.Participants.Where(p => p.Purchase.Group.Id == group.Id && p.UserId == user.Id);
_context.Participants.RemoveRange(toDelete);
var cantLeave = _context.Purchases.Any(p => p.Purchaser.Id == user.Id && p.Group.Id == group.Id);
if (cantLeave)
{
throw new InvalidCommandException("No te podes ir del grupo si compraste algo");
}
await _context.SaveChangesAsync();
return(Unit.Value);
}
public async Task <Unit> Handle(AddFriendCommand request, CancellationToken cancellationToken)
{
Task <User> current = _context
.Users
.Include(u => u.Friends)
.Include(u => u.FriendsOf)
.FirstOrDefaultAsync(u => u.Id == request.CurrentUserId, cancellationToken: cancellationToken);
Task <User> toAdd = _context
.Users
.Include(u => u.Friends)
.Include(u => u.FriendsOf)
.FirstOrDefaultAsync(u => u.Id == request.FriendUserId, cancellationToken: cancellationToken);
User currentUser = await current;
User userToAdd = await toAdd;
if (currentUser == null || userToAdd == null)
{
throw new InvalidCommandException("Usuarios no existen");
}
currentUser.AddFriend(userToAdd);
await _context.SaveChangesAsync();
return(Unit.Value);
}
private async Task <UserModel> TryToHandle(CreateUserCommand request)
{
if (string.IsNullOrWhiteSpace(request.Password))
{
throw new InvalidCommandException($"Password is required");
}
if (await _context.Users.AnyAsync(user => user.Mail == request.Mail))
{
throw new InvalidCommandException($"User with email {request.Mail} already exists.");
}
var toCreate = new User()
{
Name = request.Name,
LastName = request.LastName,
Mail = request.Mail,
Password = _hasher.Hash(request.Password)
};
await _context.Users.AddAsync(toCreate);
await _context.SaveChangesAsync();
return(new UserModel(toCreate));
}
private async Task <UserModel> TryToUpdate(UpdateUserCommand request)
{
int id = request.Id;
User toUpdate = await _context.Users.FindAsync(id);
toUpdate.Name = request.Name ?? toUpdate.Name;
toUpdate.LastName = request.LastName ?? toUpdate.LastName;
toUpdate.Mail = request.Mail ?? toUpdate.Mail;
if (!string.IsNullOrEmpty(request.Password))
{
toUpdate.Password = request.Password;
}
await _context.SaveChangesAsync();
return(new UserModel(toUpdate));
}
public async Task <Unit> Handle(DeleteGroupCommand request, CancellationToken cancellationToken)
{
Group toDelete = await _context
.Groups
.FirstOrDefaultAsync(g => g.Id == request.Id, cancellationToken : cancellationToken);
if (toDelete == null)
{
throw new InvalidCommandException($"No existe el grupo con id {request.Id}");
}
DeleteMemberships(toDelete);
_context.Groups.Remove(toDelete);
_context.Purchases.RemoveRange(toDelete.Purchases);
await _context.SaveChangesAsync();
return(Unit.Value);
}
public async Task <PurchaseModel> Handle(ModifyPurchaseCommand request, CancellationToken cancellationToken)
{
Purchase purchase = await _context
.Purchases
.Include(purchase1 => purchase1.Group)
.Include(purchase1 => purchase1.Purchaser)
.Include(purchase1 => purchase1.Participants)
.FirstOrDefaultAsync(purchase1 => purchase1.Id == request.PurchaseId, cancellationToken: cancellationToken)
?? throw new InvalidCommandException("Compra no existe");
UpdateNameIfNeeded(request, purchase);
UpdateCostIfNeeded(request, purchase);
UpdateCurrencyIfNeeded(request, purchase);
await UpdateParticipantsIfNeeded(request, purchase);
await _context.SaveChangesAsync();
return(new PurchaseModel(purchase));
}
private async Task <GroupModel> TryToUpdate(ModifyGroupCommand request)
{
int id = request.Id;
Group toUpdate = await _context.Groups
.Include(group => group.Memberships)
.Include(group => group.Admin)
.Include(group => group.Purchases)
.FirstOrDefaultAsync(g => g.Id == id);
toUpdate.Name = request.Name ?? toUpdate.Name;
var oldUsers = toUpdate.Memberships.Select(membership => membership.UserId).ToList();
CleanMemberships(toUpdate);
Domain.Membership[] memberships = await Task.WhenAll(request.Memberships.Select(i => GetMemberships(i, toUpdate)));
var newUsers = memberships.Select(membership => membership.UserId).ToList();
var toRemove = oldUsers.Except(newUsers).ToList();
foreach (Purchase purchase in toUpdate.Purchases.ToList())
{
foreach (int i in toRemove)
{
purchase.RemoveParticipant(new User()
{
Id = i
});
}
if (toRemove.Contains(purchase.Purchaser.Id))
{
toUpdate.Purchases.Remove(purchase);
}
}
toUpdate.Memberships = memberships;
await _context.SaveChangesAsync();
return(new GroupModel(toUpdate));
}
public async Task <Unit> Handle(DeleteUserCommand request, CancellationToken cancellationToken)
{
User toDelete = await _context.Users.FindAsync(request.Id);
IEnumerable <Friendship> friendshipsToDelete = _context.Friendships.Where(friendship => friendship.Friend1Id == toDelete.Id || friendship.Friend2Id == toDelete.Id);
if (_context.Groups.Include(group => group.Admin).Any(g => g.Admin.Id == request.Id))
{
throw new InvalidCommandException("No te podes borrar porque sos admin de una grupo");
}
if (toDelete == null)
{
return(Unit.Value);
}
_context.Friendships.RemoveRange(friendshipsToDelete);
_context.Users.Remove(toDelete);
_imageRepository.DeleteImage(request.Id);
await _context.SaveChangesAsync();
return(Unit.Value);
}
public async Task <Unit> Handle(DeleteFriendCommand request, CancellationToken cancellationToken)
{
/*
* User current = await _context.Users.Include(u => u.Friends).Include(u => u.FriendsOf).FirstOrDefaultAsync(u => u.Id == request.CurrentUserId, cancellationToken: cancellationToken);
* User friend = await _context.Users.Include(u => u.Friends).Include(u => u.FriendsOf).FirstOrDefaultAsync(u => u.Id == request.FriendUserId, cancellationToken: cancellationToken);
*
* if (current == null || friend == null)
* return Unit.Value;
*
* current.RemoveFriend(friend);
*/
var friendshipsToRemove = await _context.Friendships.Where(friendship => (friendship.Friend1Id == request.CurrentUserId && friendship.Friend2Id == request.FriendUserId) ||
(friendship.Friend1Id == request.FriendUserId && friendship.Friend2Id == request.CurrentUserId))
.ToListAsync(cancellationToken: cancellationToken);
_context.Friendships.RemoveRange(friendshipsToRemove);
await _context.SaveChangesAsync();
return(Unit.Value);
}
public async Task <PurchaseModel> Handle(CreatePurchaseCommand request, CancellationToken cancellationToken)
{
if (string.IsNullOrWhiteSpace(request.Name))
{
throw new InvalidCommandException($"Nombre de la compra {request.Name} es invalido");
}
Group group = await GetGroupIfValid(request);
User purchaser = await GetPurchaserIfValid(request);
IEnumerable <User> participants = await GetParticipantsIfValid(request.Participants, group);
Currency currency = GetCurrencyIfValid(request);
var purchase = new Purchase(purchaser, group, request.Cost, currency, participants, request.Name, request.Longitude, request.Latitude);
group.Purchases.Add(purchase);
await _context.SaveChangesAsync();
return(new PurchaseModel(purchase));
}
