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Add: CheckUsernameHandler getting User from UserRegistry and determining availablity

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This commit is contained in:
Lars Simon Winzer
2026-04-02 14:33:59 +02:00
parent 9087f009d3
commit 5fa478c440
1 changed files with 29 additions and 0 deletions
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src/main/java/ch/unibas/dmi/dbis/cs108/casono/server/app/commands/check_nick/CheckUsernameHandler.java
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package ch.unibas.dmi.dbis.cs108.casono.server.app.commands.check_nick;
import ch.unibas.dmi.dbis.cs108.casono.server.domain.user.User;
import ch.unibas.dmi.dbis.cs108.casono.server.domain.user.UserRegistry;
import ch.unibas.dmi.dbis.cs108.casono.server.network.command.execution.CommandHandler;
import ch.unibas.dmi.dbis.cs108.casono.server.network.protocol.response.dispatcher.ResponseDispatcher;
import java.util.Optional;
public class CheckUsernameHandler implements CommandHandler<CheckUsernameRequest> {
private final ResponseDispatcher responseDispatcher;
private final UserRegistry userRegistry;
public CheckUsernameHandler(ResponseDispatcher responseDispatcher, UserRegistry userRegistry) {
this.responseDispatcher = responseDispatcher;
this.userRegistry = userRegistry;
}
@Override
public void execute(CheckUsernameRequest request) {
Optional<User> user = userRegistry.getByUsername(request.getUsername());
UsernameAvailability availability;
if (user.isEmpty()) {
availability = UsernameAvailability.FREE;
} else {
availability = UsernameAvailability.TAKEN;
}
responseDispatcher.dispatch(new CheckUsernameResponse(request.getContext(), availability));
}
}