First commit.

src/main/java/io/github/adrianvic/regions/Config.java

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+package io.github.adrianvic.regions;
+
+import io.github.adrianvic.regions.policy.LocationPolicy;
+import io.github.adrianvic.regions.policy.PermissionPolicy;
+import io.github.adrianvic.regions.policy.PlayerNamePolicy;
+import org.bukkit.configuration.file.YamlConfiguration;
+
+import java.io.File;
+import java.util.List;
+
+public class Config {
+    private final static Config instance = new Config();
+    private File file;
+    private YamlConfiguration config;
+
+    private List<LocationPolicy> locationPolicies;
+    private List<PermissionPolicy> permissionPolicies;
+    private List<PlayerNamePolicy> playerNamePolicies;
+
+    private Config() {
+    }
+
+    public void load() {
+        file = new File(Regions.getInstance().getDataFolder(), "settings.yml");
+
+        if (!file.exists())
+            Regions.getInstance().saveResource("settings.yml", false);
+
+        config = new YamlConfiguration();
+        config.options().parseComments(true);
+
+        try {
+            config.load(file);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        locationPolicies = LocationPolicy.parseLocationPolicy(config.getMapList("Policies.Location"));
+    }
+
+    public void save() {
+        try {
+            config.save(file);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void set(String path, Object value) {
+        config.set(path, value);
+        save();
+    }
+
+    public List<LocationPolicy> getLocationPolicies() {
+        return locationPolicies;
+    }
+
+    public static Config getInstance() {
+        return instance;
+    }
+}

src/main/java/io/github/adrianvic/regions/DataShifter.java

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+package io.github.adrianvic.regions;
+
+public class DataShifter {
+}

src/main/java/io/github/adrianvic/regions/PlaceListener.java

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+package io.github.adrianvic.regions;
+
+import org.bukkit.Location;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.BlockBreakEvent;
+import org.bukkit.event.entity.EntityDamageByEntityEvent;
+import org.bukkit.event.player.PlayerInteractEvent;
+
+public class PlaceListener implements Listener {
+    Validator val = new Validator();
+
+    @EventHandler
+    public void onBlockBreak(BlockBreakEvent event) {
+        event.setCancelled(!val.isHumanoidAbleToHarvest(event.getPlayer()));
+    }
+
+    @EventHandler
+    public void onInteractionEvent(PlayerInteractEvent event) {
+        if (event.getItem() != null) {
+            event.setCancelled(!val.isItemValid(event.getItem().getType()));
+        }
+    }
+
+    @EventHandler
+    public void onEntityDamageByEntityEvent(EntityDamageByEntityEvent event) {
+        if (event.getDamager() instanceof HumanEntity player) {
+            boolean canceled = !val.isHumanoidAbleToHit(player);
+            event.setCancelled(canceled);
+        }
+    }
+}

src/main/java/io/github/adrianvic/regions/Regions.java

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+package io.github.adrianvic.regions;
+
+import io.github.adrianvic.regions.commands.ListPolicies;
+import io.github.adrianvic.regions.commands.PolicyInfo;
+import org.bukkit.plugin.java.JavaPlugin;
+
+public final class Regions extends JavaPlugin {
+
+    @Override
+    public void onEnable() {
+        getServer().getPluginManager().registerEvents(new PlaceListener(), this);
+        Config.getInstance().load();
+        getCommand("mrlistpolicies").setExecutor(new ListPolicies());
+        getCommand("mrpolicyinfo").setExecutor(new PolicyInfo());
+    }
+
+    @Override
+    public void onDisable() {
+        // Plugin shutdown logic
+    }
+
+    public static Regions getInstance() {
+        return getPlugin(Regions.class);
+    }
+}

src/main/java/io/github/adrianvic/regions/Validator.java

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+package io.github.adrianvic.regions;
+
+import org.bukkit.Location;
+import org.bukkit.Material;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.entity.Player;
+
+import java.util.ArrayList;
+
+
+public class Validator {
+    ArrayList<Material> blacklistedItems = new ArrayList<Material>();
+
+    public Validator() {
+        blacklistedItems.add(Material.COPPER_SWORD);
+        blacklistedItems.add(Material.COPPER_AXE);
+        blacklistedItems.add(Material.COPPER_HOE);
+        blacklistedItems.add(Material.ROTTEN_FLESH);
+    }
+
+    public boolean isHumanoidAbleToHit(HumanEntity damager) {
+        return isItemValid(damager.getInventory().getItemInMainHand().getType());
+    }
+
+    public boolean isHumanoidAbleToHarvest(HumanEntity harvester) {
+        return isItemValid(harvester.getInventory().getItemInMainHand().getType());
+    }
+
+    public boolean isItemValid(Material item) {
+        return !blacklistedItems.contains(item);
+    }
+
+    public void warnPlayer(Player player) {
+        Location loc = player.getLocation();
+        loc.getWorld().strikeLightningEffect(loc);
+        player.sendMessage("Please note that you are not allowed to do this here!");
+    }
+}

src/main/java/io/github/adrianvic/regions/commands/ListPolicies.java

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+package io.github.adrianvic.regions.commands;
+
+import io.github.adrianvic.regions.Config;
+import io.github.adrianvic.regions.policy.LocationPolicy;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabCompleter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ListPolicies implements CommandExecutor, TabCompleter {
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s, @NotNull String @NotNull [] strings) {
+        List<String> rstr = new ArrayList<>();
+        for (LocationPolicy p : Config.getInstance().getLocationPolicies()) {
+            rstr.add(p.name());
+        }
+        commandSender.sendMessage(String.join(", ", rstr) + ".");
+        return true;
+    }
+
+    @Override
+    public @Nullable List<String> onTabComplete(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s, @NotNull String @NotNull [] strings) {
+        return List.of();
+    }
+}

src/main/java/io/github/adrianvic/regions/commands/PolicyInfo.java

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+package io.github.adrianvic.regions.commands;
+
+import io.github.adrianvic.regions.Config;
+import io.github.adrianvic.regions.policy.LocationPolicy;
+import io.github.adrianvic.regions.policy.PolicyNode;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabCompleter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class PolicyInfo implements CommandExecutor, TabCompleter {
+    @Override
+    public boolean onCommand(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s, @NotNull String @NotNull [] strings) {
+        List<LocationPolicy> policies = Config.getInstance().getLocationPolicies();
+        for (LocationPolicy lp : policies) {
+            if (lp.name().equals(strings[0])) {
+                String locations = lp.locations().toString();
+
+                List<PolicyNode> nodes = lp.nodes();
+                List<String> nodeNames = new ArrayList<>();
+                for (PolicyNode n : nodes) {
+                    nodeNames.add(n.type());
+                }
+                String nodesStr = String.join(", ", nodeNames) + ".";
+
+                commandSender.sendMessage(String.format("""
+                        Showing info for policy "%s":
+                        Type: %s
+                        Locations: %s
+                        Nodes: %s
+                        %s
+                        """, lp.name(), "location", locations, nodesStr, lp.allowlist() ? "Is allowlist" : "Is blacklist"));
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public @Nullable List<String> onTabComplete(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s, @NotNull String @NotNull [] strings) {
+        List<String> rstr = new ArrayList<>();
+        for (LocationPolicy p : Config.getInstance().getLocationPolicies()) {
+            rstr.add(p.name());
+        }
+        return rstr;
+    }
+}

src/main/java/io/github/adrianvic/regions/policy/LocationPolicy.java

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+package io.github.adrianvic.regions.policy;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.util.BoundingBox;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+public record LocationPolicy(String name, List<ArrayList<BoundingBox>> locations, List<PolicyNode> nodes, boolean allowlist) {
+    public static List<LocationPolicy> parseLocationPolicy(List<Map<?,?>> raw) {
+        List<LocationPolicy> out = new ArrayList<>(raw.size());
+        for (Map<?,?> m : raw) {
+            String name = (String) m.get("name");
+            boolean allowList = Boolean.TRUE.equals(m.get("allowList"));
+
+            // Nodes
+            Object rawNodes = m.get("nodes");
+            List<Map<String, Object>> nodeList = new ArrayList<>();
+            if (rawNodes instanceof  List<?> list) {
+                for (Object o : list) {
+                    if (o instanceof Map<?, ?> map)
+                        nodeList.add((Map<String, Object>) map);
+                }
+            }
+
+            List<PolicyNode> nodes = PolicyNode.parseNodes(nodeList);
+
+            // Parsing locations
+            List<ArrayList<BoundingBox>> locations = new ArrayList<>();
+            Object rawGroups = m.get("locations");
+            List<?> groups = rawGroups instanceof List ? (List<?>) rawGroups : List.of();
+
+            // Getting groups
+            for (Object gObj : groups) {
+                List<?> group = (List<?>) gObj;
+                ArrayList<BoundingBox> boxes = new ArrayList<>(group.size());
+
+                // Now iterate over regions inside the group
+                for (Object rObj : group) {
+                    Map<?,?> region = (Map<?, ?>) rObj;
+                    Map<?,?> c1 = (Map<?, ?>) region.get("corner1");
+                    Map<?,?> c2 = (Map<?, ?>) region.get("corner2");
+
+                    double x1 = ((Number) c1.get("x")).doubleValue();
+                    double y1 = ((Number) c1.get("y")).doubleValue();
+                    double z1 = ((Number) c1.get("z")).doubleValue();
+
+                    double x2 = ((Number) c2.get("x")).doubleValue();
+                    double y2 = ((Number) c2.get("y")).doubleValue();
+                    double z2 = ((Number) c2.get("z")).doubleValue();
+
+                    Location loc1 = new Location(Bukkit.getWorlds().getFirst(), x1, y1, z1);
+                    Location loc2 = new Location(Bukkit.getWorlds().getFirst(), x2, y2, z2);
+
+                    boxes.add(BoundingBox.of(loc1, loc2));
+                }
+                locations.add(boxes);
+            }
+            out.add(new LocationPolicy(name, locations, nodes, allowList));
+        }
+        return out;
+    }
+}

src/main/java/io/github/adrianvic/regions/policy/PermissionPolicy.java

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+package io.github.adrianvic.regions.policy;
+
+import org.bukkit.permissions.Permission;
+
+import java.util.ArrayList;
+
+public record PermissionPolicy(String name, ArrayList<Permission> permissions, PolicyNode nodes, boolean allowlist) {}

src/main/java/io/github/adrianvic/regions/policy/PlayerNamePolicy.java

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+package io.github.adrianvic.regions.policy;
+
+import org.bukkit.permissions.Permission;
+
+import java.util.ArrayList;
+
+public record PlayerNamePolicy(String name, ArrayList<String> playerName, PolicyNode nodes, boolean allowlist) {}

src/main/java/io/github/adrianvic/regions/policy/PolicyNode.java

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+package io.github.adrianvic.regions.policy;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+public record PolicyNode(String type, List<String> values) {
+    public static List<PolicyNode> parseNodes(List<Map<String,Object>> raw) {
+        List<PolicyNode> nodes = new ArrayList<>();
+
+        for (Map<String, Object> m : raw) {
+            for (Map.Entry<String, Object> entry : m.entrySet()) {
+
+                String type = entry.getKey();
+                List<String> values = new ArrayList<>();
+                Object val = entry.getValue();
+                
+                if (val instanceof String s) {
+                    values.add((s));
+                } else if (val instanceof List<?> l) {
+                    for (Object o : l) {
+                        if (o instanceof String s) {
+                            values.add(s);
+                        }
+                    }
+                }
+                nodes.add(new PolicyNode(type, values));
+            }
+        }
+        return nodes;
+    }
+}

src/main/resources/plugin.yml

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+name: regions
+version: '1.0-SNAPSHOT'
+main: io.github.adrianvic.regions.Regions
+api-version: '1.21'
+author: 'Adrian Victor'
+website: https://github.io/adrianvic
+description: Change what players can do based in custom criteria.
+commands:
+  mrlistpolicies:
+    description: "Lists all loaded policies"
+    usage: "/mrlistpolicies"
+  mrpolicyinfo:
+    description: "Show info about a policy"
+    usage: "/mrpolicyinfo"

src/main/resources/settings.yml

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+Policies:
+  Location:
+    - name: "spawn-protection"
+      allowlist: false
+      nodes:
+        # example PolicyNode fields — adapt to your actual structure
+        canHit: false
+        canHarvest: false
+        message: "You cannot use tools here."
+      locations:
+        # first group (ArrayList<BoundingBox>)
+        -
+          # region 1 in group 1
+          - corner1: { x: 100, y: 60, z: 100 }
+            corner2: { x: 110, y: 70, z: 110 }
+          # region 2 in group 1
+          - corner1: { x: 120, y: 58, z: 95 }
+            corner2: { x: 125, y: 64, z: 100 }
+        # second group (another ArrayList<BoundingBox>)
+        -
+          - corner1: { x: -50, y: 50, z: -50 }
+            corner2: { x: -40, y: 60, z: -40 }
+
+    - name: "farm-area"
+      allowlist: true
+      nodes:
+        canHit: true
+        canHarvest: true
+        message: "Farming allowed."
+      locations:
+        -
+          - corner1: { x: 200, y: 62, z: 200 }
+            corner2: { x: 220, y: 66, z: 220 }