SchematicSystem_Core/src/de/steamwar/schematicsystem/SafeSchematicNode.java

@@ -0,0 +1,87 @@
+package de.steamwar.schematicsystem;
+
+import de.steamwar.schematicsystem.commands.SchematicCommandUtils;
+import de.steamwar.sql.SchematicNode;
+import de.steamwar.sql.SteamwarUser;
+import lombok.NonNull;
+import org.bukkit.Material;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class SafeSchematicNode {
+
+    public static Result setParent(@NonNull SteamwarUser user, @NonNull SchematicNode node, SchematicNode newParent) {
+        if(newParent == null) {
+            if(SchematicNode.getSchematicsAccessibleByUser(user.getId(), 0)
+                    .stream().map(SchematicNode::getName).anyMatch(s -> s.equalsIgnoreCase(node.getName()))) {
+                return Result.ALREADY_IN_DIRECTORY;
+            }
+
+            node.setParent(0);
+        } else {
+            if(!newParent.isDir()) {
+                return Result.NOT_A_DIR;
+            }
+
+            if(SchematicNode.getSchematicsAccessibleByUser(user.getId(), newParent.getParent())
+                    .stream().map(SchematicNode::getName).anyMatch(s -> s.equalsIgnoreCase(node.getName()))) {
+                return Result.ALREADY_IN_DIRECTORY;
+            }
+
+            node.setParent(newParent.getId());
+        }
+        return Result.DONE;
+    }
+
+    public static Result setName(@NonNull SteamwarUser user, @NonNull SchematicNode node, @NonNull String name) {
+        if(invalidSchemName(name)) {
+            return Result.INVALID_NAME;
+        }
+
+        if(SchematicNode.getSchematicsAccessibleByUser(user.getId(), node.getParent()).stream().map(SchematicNode::getName).anyMatch(s -> s.equalsIgnoreCase(name))) {
+            return Result.ALREADY_IN_DIRECTORY;
+        }
+
+        node.setName(name);
+        return Result.DONE;
+    }
+
+    public static Result setItem(@NonNull SteamwarUser user, @NonNull SchematicNode node, @NonNull Material material) {
+
+    }
+
+    private static final List<String> FORBIDDEN_NAMES = Collections.unmodifiableList(Arrays.asList("public"));
+    public static boolean invalidSchemName(String name) {
+        if (name.isEmpty()) {
+            return true;
+        }
+        if(name.length() > 64) {
+            return true;
+        }
+        if (name.contains("/") ||
+                name.contains("\\") ||
+                name.contains("<") ||
+                name.contains(">") ||
+                name.contains("^") ||
+                name.contains("°") ||
+                name.contains("'") ||
+                name.contains("\"") ||
+                name.contains(" ")) {
+            return true;
+        }
+        return FORBIDDEN_NAMES.contains(name.toLowerCase());
+    }
+
+    public enum Result {
+        DONE,
+        NOT_A_DIR,
+        ALREADY_IN_DIRECTORY,
+        INVALID_NAME;
+
+        public boolean isSuccessful() {
+            return this == DONE;
+        }
+    }
+}

pom.xml

@@ -45,5 +45,10 @@
             <scope>system</scope>
             <systemPath>${main.basedir}/lib/SpigotCore.jar</systemPath>
         </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.22</version>
+        </dependency>
     </dependencies>
 </project>