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Original file line number Diff line number Diff line change
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package fr.traqueur.commands.impl.arguments;

import fr.traqueur.commands.api.arguments.ArgumentConverter;
import fr.traqueur.commands.api.arguments.TabCompleter;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class EnumArgument<T extends Enum<T>, S> implements ArgumentConverter<Enum<T>>, TabCompleter<S> {

public static <E extends Enum<E>, S> EnumArgument<E, S> of(Class<E> enumClass) {
return new EnumArgument<>(enumClass);
}

private final Class<T> clazz;

public EnumArgument(Class<T> clazz) {
this.clazz = clazz;
}

@Override
public Enum<T> apply(String s) {
try {
return Enum.valueOf(clazz, s);
} catch (IllegalArgumentException e) {
return null;
}
}

@Override
public List<String> onCompletion(S sender, List<String> args) {
return Arrays.stream(clazz.getEnumConstants())
.map(Enum::name)
.collect(Collectors.toList());
}
}