forked from SteamWar/SteamWar
97 lines
2.9 KiB
Java
97 lines
2.9 KiB
Java
/*
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* This file is a part of the SteamWar software.
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*
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* Copyright (C) 2022 SteamWar.de-Serverteam
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.steamwar.command;
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import lombok.RequiredArgsConstructor;
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import java.util.function.BooleanSupplier;
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import java.util.function.Function;
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import java.util.function.Predicate;
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@FunctionalInterface
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public interface AbstractValidator<K, T> {
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/**
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* Validates the given value.
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*
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* @param sender The sender of the command.
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* @param value The value to validate or null if mapping returned null.
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* @param messageSender The message sender to send messages to the player. Never send messages directly to the player.
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* @return The result of the validation.
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*/
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boolean validate(K sender, T value, MessageSender messageSender);
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@Deprecated
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default <C> Validator<C> validate(C value, MessageSender messageSender) {
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return new Validator<>(value, messageSender);
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}
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@Deprecated
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@RequiredArgsConstructor
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class Validator<C> {
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private final C value;
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private final MessageSender messageSender;
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private boolean valid = true;
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public <M> Validator<M> map(Function<C, M> mapper) {
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return new Validator<>(mapper.apply(value), messageSender).set(valid);
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}
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public Validator<C> set(boolean value) {
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this.valid = value;
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return this;
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}
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public Validator<C> and(Predicate<C> predicate) {
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valid &= predicate.test(value);
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return this;
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}
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public Validator<C> or(Predicate<C> predicate) {
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valid |= predicate.test(value);
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return this;
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}
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public Validator<C> errorMessage(String s, Object... args) {
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if (!valid) messageSender.send(s, args);
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return this;
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}
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public boolean result() {
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return valid;
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}
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}
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@FunctionalInterface
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interface MessageSender {
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void send(String s, Object... args);
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default boolean send(boolean condition, String s, Object... args) {
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if (condition) send(s, args);
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return condition;
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}
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default boolean send(BooleanSupplier condition, String s, Object... args) {
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return send(condition.getAsBoolean(), s, args);
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}
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}
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}
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