Add group setweight command - closes #94

common/src/main/java/me/lucko/luckperms/common/commands/group/GroupMainCommand.java

@@ -45,6 +45,7 @@ public class GroupMainCommand extends MainCommand<Group> {
                 .add(new CommandPermission<>(false))
                 .add(new CommandParent<>(false))
                 .add(new CommandMeta<>(false))
+                .add(new GroupSetWeight())
                 .add(new HolderShowTracks<>(false))
                 .add(new GroupBulkChange())
                 .add(new GroupClear())

common/src/main/java/me/lucko/luckperms/common/commands/group/GroupSetWeight.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2016 Lucko (Luck) <luck@lucko.me>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+package me.lucko.luckperms.common.commands.group;
+
+import me.lucko.luckperms.api.Node;
+import me.lucko.luckperms.common.LuckPermsPlugin;
+import me.lucko.luckperms.common.commands.Arg;
+import me.lucko.luckperms.common.commands.CommandException;
+import me.lucko.luckperms.common.commands.CommandResult;
+import me.lucko.luckperms.common.commands.SubCommand;
+import me.lucko.luckperms.common.commands.sender.Sender;
+import me.lucko.luckperms.common.commands.utils.ArgumentUtils;
+import me.lucko.luckperms.common.constants.Message;
+import me.lucko.luckperms.common.constants.Permission;
+import me.lucko.luckperms.common.core.NodeFactory;
+import me.lucko.luckperms.common.core.model.Group;
+import me.lucko.luckperms.common.utils.Predicates;
+import me.lucko.luckperms.exceptions.ObjectAlreadyHasException;
+import me.lucko.luckperms.exceptions.ObjectLacksException;
+
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class GroupSetWeight extends SubCommand<Group> {
+    public GroupSetWeight() {
+        super("setweight", "Set the groups weight", Permission.GROUP_SETWEIGHT, Predicates.not(1),
+                Arg.list(Arg.create("weight", true, "the weight to set"))
+        );
+    }
+
+    @Override
+    public CommandResult execute(LuckPermsPlugin plugin, Sender sender, Group group, List<String> args, String label) throws CommandException {
+        int weight = ArgumentUtils.handlePriority(0, args);
+
+        Set<Node> existingWeightNodes = group.getNodes().stream()
+                .filter(n -> n.getPermission().startsWith("weight."))
+                .collect(Collectors.toSet());
+
+        existingWeightNodes.forEach(n -> {
+            try {
+                group.unsetPermission(n);
+            } catch (ObjectLacksException ignored) {}
+        });
+
+        try {
+            group.setPermission(NodeFactory.newBuilder("weight." + weight).build());
+        } catch (ObjectAlreadyHasException ignored) {}
+
+        save(group, sender, plugin);
+        Message.GROUP_SET_WEIGHT.send(sender, weight, group.getDisplayName());
+        return CommandResult.SUCCESS;
+    }
+}

common/src/main/java/me/lucko/luckperms/common/constants/Message.java

@@ -334,6 +334,7 @@ public enum Message {
              "{PREFIX}&f-    &3Meta: &a{6}",
             false
     ),
+    GROUP_SET_WEIGHT("&aSet weight to &b{0}&a for group &b{1}&a.", true),
 
     TRACK_INFO(
             "{PREFIX}&b&l> &bShowing Track: &f{0}" + "\n" +

common/src/main/java/me/lucko/luckperms/common/constants/Permission.java

@@ -115,6 +115,7 @@ public enum Permission {
     GROUP_META_REMOVETEMP_SUFFIX(l("meta.removetempsuffix", "removetempsuffix"), Type.GROUP),
     GROUP_META_CLEAR(l("meta.clear", "clearmeta"), Type.GROUP),
     GROUP_SHOWTRACKS(l("showtracks"), Type.GROUP),
+    GROUP_SETWEIGHT(l("setweight"), Type.GROUP),
     GROUP_BULKCHANGE(l("bulkchange"), Type.GROUP),
     GROUP_CLEAR(l("clear"), Type.GROUP),
     GROUP_RENAME(l("rename"), Type.GROUP),