Fix some more issues

2025-07-11 21:54:27 +02:00
parent 43cca3376e
commit a6b703b821
8 changed files with 122 additions and 28 deletions
@@ -0,0 +1,97 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2020  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bausystem.region;
+
+import de.steamwar.bausystem.region.flags.Flag;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+
+import java.util.NoSuchElementException;
+import java.util.Optional;
+
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+public class FlagOptional<T extends Enum<T> & Flag.Value<T>> {
+
+    private final Flag<T> flag;
+    private final T value;
+
+    public static <T extends Enum<T> & Flag.Value<T>> FlagOptional<T> of(Flag<T> flag) {
+        return new FlagOptional<>(flag, null);
+    }
+
+    public static <T extends Enum<T> & Flag.Value<T>> FlagOptional<T> of(Flag<T> flag, T value) {
+        return new FlagOptional<>(flag, value);
+    }
+
+    public boolean isPresent() {
+        return value != null;
+    }
+
+    public boolean isEmpty() {
+        return value == null;
+    }
+
+    public boolean is(T value) {
+        if (isEmpty()) return false;
+        return this.value.equals(value);
+    }
+
+    public boolean isWithDefault(T value) {
+        if (isEmpty()) {
+            return flag.getDefaultValue().equals(value);
+        } else {
+            return this.value.equals(value);
+        }
+    }
+
+    public T get() {
+        if (isEmpty()) {
+            throw new NoSuchElementException("No value present");
+        }
+        return value;
+    }
+
+    public T getWithDefault() {
+        if (isEmpty()) {
+            return flag.getDefaultValue();
+        } else {
+            return value;
+        }
+    }
+
+    public T orElse(T defaultValue) {
+        if (isEmpty()) {
+            return defaultValue;
+        } else {
+            return value;
+        }
+    }
+
+    public Optional<String> name() {
+        if (isEmpty()) {
+            return Optional.empty();
+        }
+        return Optional.of(value.name());
+    }
+
+    public String nameWithDefault() {
+        return getWithDefault().name();
+    }
+}