public async Task <IDictionary <Id, Tuple <Todo, Id> > > Handle(DeleteTodosCommand request, CancellationToken cancellationToken)
{
var idList = request.TodoIds
.Select(x => (Guid)x)
.ToList();
var todosToDelete = await _items
.Where(x => idList.Contains(x.Id))
.ToListAsync();
foreach (var todo in todosToDelete)
{
_unitOfWork.Remove <TodoEntity>(todo.Id);
}
await _unitOfWork.SaveChangesAsync();
return(todosToDelete
.ToDictionary(x => (Id)x.Id, x => Tuple.Create(x.ToModel(), (Id)x.AssignedUserId)));
}
public Mutation(IHttpContextAccessor accessor)
{
Field <TodoType, KeyValuePair <Id, Tuple <Todo, Id> > >()
.Name("createTodo")
.Argument <NonNullGraphType <AddTodoInputType> >("todo", "Todo input.")
.ResolveAsync(async context =>
{
var mediator = accessor.GetMediator();
var input = context.GetArgument <AddTodoInput>("todo");
if (string.IsNullOrEmpty(input.Name))
{
context.Errors.Add(new ExecutionError("Name should not be empty")
{
Code = "EmptyName"
});
}
if (context.Errors.Any())
{
return(new KeyValuePair <Id, Tuple <Todo, Id> >(null, null));
}
var request = input.ToCommand();
var result = await mediator.Send(request);
return(result.Single());
});
Field <TodoType, KeyValuePair <Id, Tuple <Todo, Id> > >()
.Name("updateTodo")
.Argument <NonNullGraphType <UpdateTodoInputType> >("todo", "Todo input.")
.ResolveAsync(async context =>
{
var mediator = accessor.GetMediator();
var input = context.GetArgument <UpdateTodoInput>("todo");
if (string.IsNullOrEmpty(input.Name))
{
context.Errors.Add(new ExecutionError("Name should not be empty")
{
Code = "EmptyName"
});
}
if (input.Id == Guid.Empty)
{
context.Errors.Add(new ExecutionError("Id should not be empty")
{
Code = "EmptyId"
});
}
if (context.Errors.Any())
{
return(new KeyValuePair <Id, Tuple <Todo, Id> >(null, null));
}
var request = input.ToCommand();
var currentItemsRequest = new GetTodosListRequest
{
SpecifiedIds = request.Updates.Keys
};
var oldTodos = await mediator.Send(currentItemsRequest);
request.OldTodos = oldTodos;
var todoContext = context.Arguments["todo"] as Dictionary <string, object>;
if (!todoContext.ContainsKey("description"))
{
var oldItem = oldTodos[input.Id].Item1;
request.Updates[input.Id].Item1.Description = oldItem.Description;
}
var result = await mediator.Send(request);
return(result.Single());
});
Field <TodoType, KeyValuePair <Id, Tuple <Todo, Id> > >()
.Name("deleteTodo")
.Argument <NonNullGraphType <IdGraphType>, Guid>("Id", "Todo id.")
.ResolveAsync(async context =>
{
var mediator = accessor.GetMediator();
var id = context.GetArgument <Guid>("id");
var command = new DeleteTodosCommand
{
TodoIds = new [] { (Id)id }
};
var result = await mediator.Send(command);
return(result.Single());
});
Field <UserType, KeyValuePair <Id, User> >()
.Name("signIn")
.Argument <NonNullGraphType <StringGraphType> >("token", "Google token.")
.ResolveAsync(async context =>
{
var mediator = accessor.GetMediator();
var input = context.GetArgument <string>("token");
var command = new SignInCommand
{
Token = input
};
var result = await mediator.Send(command);
return(result.Single());
});
}
