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package io.dico.dicore.command;
import org.bukkit.command.CommandSender;
import org.bukkit.command.ConsoleCommandSender;
import org.bukkit.entity.Player;
import java.util.Optional;
public class Validate {
private Validate() {
}
//@Contract("false, _ -> fail")
public static void isTrue(boolean expression, String failMessage) throws CommandException {
if (!expression) {
throw new CommandException(failMessage);
}
}
//@Contract("null, _ -> fail")
public static void notNull(Object obj, String failMessage) throws CommandException {
Validate.isTrue(obj != null, failMessage);
}
public static void isAuthorized(CommandSender sender, String permission, String failMessage) throws CommandException {
Validate.isTrue(sender.hasPermission(permission), failMessage);
}
public static void isAuthorized(CommandSender sender, String permission) throws CommandException {
Validate.isAuthorized(sender, permission, "You do not have permission to use that command");
}
//@Contract("null -> fail")
public static void isPlayer(CommandSender sender) throws CommandException {
isTrue(sender instanceof Player, "That command can only be used by players");
}
//@Contract("null -> fail")
public static void isConsole(CommandSender sender) throws CommandException {
isTrue(sender instanceof ConsoleCommandSender, "That command can only be used by the console");
}
public static <T> T returnIfPresent(Optional<T> maybe, String failMessage) throws CommandException {
if (!maybe.isPresent()) {
throw new CommandException(failMessage);
}
return maybe.get();
}
}
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