public async Task <SendMessagePayload> SendMessageAsync(
SendMessageInput input,
FieldNode field,
[GlobalState] string currentUserEmail,
PersonByEmailDataLoader personByEmail,
[Service] IMessageRepository messageRepository,
[Service] IEventDispatcher eventDispatcher,
CancellationToken cancellationToken)
{
IReadOnlyList <Person> participants =
await personByEmail.LoadAsync(
cancellationToken, currentUserEmail, input.RecipientEmail)
.ConfigureAwait(false);
if (participants[1] is null)
{
throw new QueryException(
ErrorBuilder.New()
.SetCode("UNKNOWN_RECIPIENT")
.SetMessage("The given recipient id is invalid.")
.AddLocation(field.Arguments[0])
.Build());
}
Person sender = participants[0];
Person recipient = participants[1];
var message = new Message(
sender.Id,
recipient.Id,
input.Text);
await messageRepository.AddMessageAsync(
message, cancellationToken)
.ConfigureAwait(false);
await eventDispatcher.SendAsync(
recipient.Email, message, cancellationToken)
.ConfigureAwait(false);
return(new SendMessagePayload(
sender,
recipient,
message,
input.ClientMutationId));
}
public async Task <SendMessagePayload> SendMessageAsync(
SendMessageInput input,
FieldNode field,
[GlobalState] string currentUserEmail,
PersonByEmailDataLoader personByEmail,
[Service] ChatDbContext dbContext,
[Service] ITopicEventSender eventSender,
CancellationToken cancellationToken)
{
IReadOnlyList <Person> participants =
await personByEmail.LoadAsync(
cancellationToken, currentUserEmail, input.RecipientEmail);
if (participants[1] is null)
{
throw new QueryException(
ErrorBuilder.New()
.SetCode("UNKNOWN_RECIPIENT")
.SetMessage("The given recipient id is invalid.")
.AddLocation(field.Arguments[0])
.Build());
}
Person sender = participants[0];
Person recipient = participants[1];
var message = new Message
{
SenderId = sender.Id,
RecipientId = recipient.Id,
Text = input.Text,
Sent = DateTime.UtcNow
};
dbContext.Messages.Add(message);
await dbContext.SaveChangesAsync(cancellationToken);
await eventSender.SendAsync(recipient.Email, message, cancellationToken);
return(new SendMessagePayload(
sender,
recipient,
message,
input.ClientMutationId));
}