Add first steps for gui

.gitignore

@@ -37,7 +37,8 @@ buildNumber.properties
 # https://github.com/takari/maven-wrapper#usage-without-binary-jar
 .mvn/wrapper/maven-wrapper.jar
 ic_plugin/settings.xml
-
+ic_plugin/*
+ic_plugin_core/settings.xml
 # Eclipse m2e generated files
 # Eclipse Core
 .project

ic_plugin_coordinates/pom.xml

@@ -6,9 +6,9 @@
     <groupId>nl.interestingcorner.coordinates</groupId>
     <artifactId>ic_plugin_coordinates</artifactId>
     <version>1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
 
     <name>ic_plugin_coordinates</name>
-    <!-- FIXME change it to the project's website -->
     <url>https://interesting-corner.nl</url>
 
     <properties>
@@ -34,6 +34,12 @@
     </dependencyManagement>
 
     <dependencies>
+            <dependency>
+                <groupId>nl.interestingcorner.core</groupId>
+                <artifactId>ic_plugin_core</artifactId>
+                <version>1.0-SNAPSHOT</version>
+                <scope>provided</scope>
+            </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>
@@ -97,12 +103,6 @@
                 <plugin>
                     <artifactId>maven-jar-plugin</artifactId>
                     <version>3.4.2</version>
-                    <configuration>
-                        <systemPropertyVariables>
-                            <db.username>${db.username}</db.username>
-                            <db.password>${db.password}</db.password>
-                        </systemPropertyVariables>
-                    </configuration>
                 </plugin>
                 <plugin>
                     <artifactId>maven-install-plugin</artifactId>

ic_plugin_coordinates/settings.xml

@@ -1,14 +0,0 @@
-<settings xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
-  <profiles>
-    <profile>
-      <id>default</id>
-      <properties>
-        <db.username>spigot</db.username>
-        <db.password>Z7nhqy+spigot-minecraft</db.password>
-        <db.name>ic_minecraft</db.name>
-        <db.host>localhost</db.host>
-      </properties>
-    </profile>
-  </profiles>
-</settings>

ic_plugin_coordinates/src/main/java/nl/interestingcorner/coordinates/App.java

@@ -5,7 +5,7 @@ import org.bukkit.command.PluginCommand;
 import org.bukkit.plugin.java.JavaPlugin;
 
 import nl.interestingcorner.coordinates.commands.CoordinatesCommand;
-import nl.interestingcorner.coordinates.db.DatabaseManager;
+import nl.interestingcorner.coordinates.db.CoordinatesDatabaseManager;
 import nl.interestingcorner.coordinates.gui.CoordinatesGUIListener;
 
 public class App extends JavaPlugin {
@@ -13,12 +13,7 @@ public class App extends JavaPlugin {
     @Override
     public void onEnable() {
         getLogger().info("Eyooo we boutta get lit!");
-
-        if (!DatabaseManager.INSTANCE.initialize(this)) {
-            getLogger().severe("Could not initialize database. Exiting!");
-            setEnabled(false);
-            return;
-        }
+        CoordinatesDatabaseManager.INSTANCE.initialize(this);
         getLogger().info("Successfully initialized database");
         
         getServer().getPluginManager().registerEvents(new CoordinatesGUIListener(), this);
@@ -29,10 +24,6 @@ public class App extends JavaPlugin {
     @Override
     public void onDisable() {
         getLogger().info("Eyooo we outta here!");
-
-        if (!DatabaseManager.INSTANCE.close()) {
-            getLogger().severe("Error while trying to close db connection");
-        }
     }
 
     private void registerCommands() {

ic_plugin_coordinates/src/main/java/nl/interestingcorner/coordinates/commands/AddCoordinateCommandHandler.java

@@ -1,23 +1,18 @@
 package nl.interestingcorner.coordinates.commands;
 
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.List;
 
 import org.bukkit.Location;
 import org.bukkit.World;
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 
 import net.md_5.bungee.api.ChatColor;
-import net.md_5.bungee.api.chat.ComponentStyle;
 import net.md_5.bungee.api.chat.TextComponent;
-import net.md_5.bungee.api.chat.TranslatableComponent;
 import nl.interestingcorner.coordinates.db.Coordinate;
-import nl.interestingcorner.coordinates.db.DatabaseManager;
-import nl.interestingcorner.coordinates.db.MinecraftColor;
+import nl.interestingcorner.coordinates.db.CoordinatesDatabaseManager;
+import nl.interestingcorner.core.MinecraftColor;
 
 public class AddCoordinateCommandHandler implements CoordinatesCommandHandler {
 
@@ -72,7 +67,7 @@ public class AddCoordinateCommandHandler implements CoordinatesCommandHandler {
             }
 
             //TODO check if item doesnt already exist, coordinate with same values, create isEquals method for coordinate
-            return DatabaseManager.INSTANCE
+            return CoordinatesDatabaseManager.INSTANCE
                     .addCoordinate(name, // name
                             description, // description
                             new Coordinate.Position(playerLocation.getBlockX(), playerLocation.getBlockY(),

ic_plugin_coordinates/src/main/java/nl/interestingcorner/coordinates/commands/GetCoordinatesCommandHandler.java

@@ -5,8 +5,8 @@ import java.util.List;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 
+import nl.interestingcorner.coordinates.db.CoordinatesDatabaseManager;
 import nl.interestingcorner.coordinates.db.Coordinate;
-import nl.interestingcorner.coordinates.db.DatabaseManager;
 import nl.interestingcorner.coordinates.gui.CoordinatesGUI;
 
 public class GetCoordinatesCommandHandler implements CoordinatesCommandHandler {
@@ -16,10 +16,10 @@ public class GetCoordinatesCommandHandler implements CoordinatesCommandHandler {
         if (sender instanceof Player player) {
             List<Coordinate> coords;
             if (args.length < 2) {
-                coords = DatabaseManager.INSTANCE.getAllCoordinates();
+                coords = CoordinatesDatabaseManager.INSTANCE.getAllCoordinates();
             } else if (args[1].equalsIgnoreCase("world")) {
                 String world = player.getWorld().getName();
-                coords = DatabaseManager.INSTANCE.getAllCoordinates(world);
+                coords = CoordinatesDatabaseManager.INSTANCE.getAllCoordinates(world);
             } else {
                 sender.sendMessage("Invalid argument: " + args[1]);
                 return false;

ic_plugin_coordinates/src/main/java/nl/interestingcorner/coordinates/db/Coordinate.java

@@ -1,5 +1,12 @@
 package nl.interestingcorner.coordinates.db;
 
+import java.util.List;
+
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+
+import nl.interestingcorner.core.MinecraftColor;
+
 /**
  * +-------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+------+-----+---------+----------------+
  * | Field | Type | Null | Key | Default | Extra |
@@ -22,6 +29,7 @@ package nl.interestingcorner.coordinates.db;
  * Class to represent a coordinate to teleport to
  */
 public class Coordinate {
+    private final int HASH_PRIME = 31;
     /**
      * auto-generated ID
      */
@@ -106,4 +114,58 @@ public class Coordinate {
                 .append(" }");
         return sb.toString();
     }
+
+    public ItemStack toItem()
+    {
+        ItemStack itemStack = new ItemStack(this.color.toMaterial());
+        ItemMeta meta = itemStack.getItemMeta();
+        if (meta == null) {
+            return itemStack;
+        }
+        meta.setDisplayName(this.color.toColorCode() + this.name);
+        meta.setLore(List.of(
+            MinecraftColor.WHITE.toColorCode() + this.description,
+            this.nether ? MinecraftColor.RED.toColorCode() +  "Nether Coordinate" : "Overworld Coordinate",
+            "X: " + this.position.x(),
+            "Y: " + this.position.y(),
+            "Z: " + this.position.z(),
+            "World: " + this.world
+        ));
+        itemStack.setItemMeta(meta);
+
+        return itemStack;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+        {
+            return true;
+        }
+        if (obj == null || getClass() != obj.getClass())
+        {
+            return false;
+        }
+        Coordinate other = (Coordinate) obj;
+        
+        return id == other.id &&
+                nether == other.nether &&
+                name.equals(other.name) &&
+                description.equals(other.description) &&
+                position.equals(other.position) &&
+                world.equals(other.world) &&
+                color == other.color;
+    }
+
+    @Override
+    public int hashCode() {
+        int result = Integer.hashCode(id);
+        result = HASH_PRIME * result + Boolean.hashCode(nether);
+        result = HASH_PRIME * result + (name != null ? name.hashCode() : 0);
+        result = HASH_PRIME * result + (description != null ? description.hashCode() : 0);
+        result = HASH_PRIME * result + (position != null ? position.hashCode() : 0);
+        result = HASH_PRIME * result + (world != null ? world.hashCode() : 0);
+        result = HASH_PRIME * result + (color != null ? color.hashCode() : 0);
+        return result;
+    }
 }

ic_plugin_coordinates/src/main/java/nl/interestingcorner/coordinates/db/CoordinatesDatabaseManager.java

@@ -1,65 +1,28 @@
 package nl.interestingcorner.coordinates.db;
 
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.FileReader;
-import java.io.IOException;
 import java.sql.Connection;
-import java.sql.DriverManager;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Properties;
 import java.util.logging.Level;
-import java.util.logging.Logger;
 
 import org.bukkit.plugin.java.JavaPlugin;
 
-public enum DatabaseManager {
+import nl.interestingcorner.core.MinecraftColor;
+import nl.interestingcorner.core.db.DatabaseManager;
+
+public enum CoordinatesDatabaseManager implements nl.interestingcorner.core.db.DatabaseInitializeListener{
 
     INSTANCE;
 
     private Connection connection;
     private JavaPlugin app;
 
-    /**
-     * Initializes the database. Creates the file and sets up the db structure.
-     *
-     * @param app the app to use for logging
-     * @return true if the database was initialized successfully. False if not.
-     */
-    public boolean initialize(JavaPlugin app) {
+    public void initialize(JavaPlugin app) {
         this.app = app;
-
-        if (!setupDatabase()) {
-            return false;
-        }
-
-        if (!initializeTables()) {
-            return false;
-        }
-
-        return true;
-    }
-
-    /**
-     * Closes the connectino to the database
-     *
-     * @return true if the connection closed succesfully, false if not.
-     */
-    public boolean close() {
-        try {
-            if (this.connection != null && !this.connection.isClosed()) {
-                this.connection.close();
-            }
-        } catch (SQLException ex) {
-            this.app.getLogger().log(Level.SEVERE, "Error while closing the databse connection: {0}", ex.getMessage());
-            return false;
-        }
-
-        return true;
+        DatabaseManager.INSTANCE.registerDatabaseInitializeListener(this);
     }
 
     /**
@@ -159,33 +122,9 @@ public enum DatabaseManager {
         return true;
     }
 
-    /**
-     * Sets up the connectino to the database. Creates a new .db file if it
-     * doesn't exist yet.
-     *
-     * @return true if the connection was set up successfully. False if not.
-     */
-    private boolean setupDatabase() {
-        if (!this.app.getDataFolder().exists()) {
-            if (!this.app.getDataFolder().mkdirs()) {
-                app.getLogger().severe("Could not create data folder");
-                return false;
-            }
-        }
-
-        File dbFile = new File(app.getDataFolder(), "database.db");
-        String url = "jdbc:sqlite:" + dbFile.getAbsolutePath();
-
-        try {
-            this.connection = DriverManager.getConnection(url);
-        } catch (SQLException e) {
-            this.app.getLogger().log(Level.SEVERE, "Could not connect to database file {0}: {1}",
-                    new Object[] { dbFile, e.getMessage() });
-        }
-
-        this.app.getLogger().log(Level.INFO, "Connected to SQLite database: {0}", dbFile.getName());
-
-        return true;
+    public boolean addCoordinate(Coordinate coordinate) {
+        return addCoordinate(coordinate.name, coordinate.description, coordinate.position, coordinate.nether,
+                coordinate.world, coordinate.color);
     }
 
     /**
@@ -213,4 +152,13 @@ public enum DatabaseManager {
         return true;
     }
 
+    @Override
+    public void initializeDatabaseTables(Connection connection) {
+        this.connection = connection;
+        if (!initializeTables()) {
+            this.app.getLogger().severe("Could not initialize coordinates database tables");
+        }
+        this.app.getLogger().info("Coordinates database tables initialized");
+    }
+
 }

ic_plugin_coordinates/src/main/java/nl/interestingcorner/coordinates/gui/CoordinatesGUI.java

@@ -10,7 +10,7 @@ import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 
 import nl.interestingcorner.coordinates.db.Coordinate;
-import nl.interestingcorner.coordinates.db.MinecraftColor;
+import nl.interestingcorner.core.MinecraftColor;
 
 public class CoordinatesGUI {
     public static void open(Player player, List<Coordinate> coordinates) {

ic_plugin_coordinates/src/main/resources/plugin.yml

@@ -2,6 +2,7 @@ main: nl.interestingcorner.coordinates.App
 name: IC-coords
 version: 0.1
 api-version: 1.21
+depend: [IC-core]
 
 commands:
    ic-coords:

ic_plugin_core/pom.xml

@@ -0,0 +1,127 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>nl.interestingcorner.core</groupId>
+    <artifactId>ic_plugin_core</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <name>ic_plugin_core</name>
+    <url>https://interesting-corner.nl</url>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.release>17</maven.compiler.release>
+    </properties>
+    <repositories>
+        <repository>
+            <id>spigot-repo</id>
+            <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
+        </repository>
+    </repositories>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.junit</groupId>
+                <artifactId>junit-bom</artifactId>
+                <version>5.11.0</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <!-- Optionally: parameterized tests support -->
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-params</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.errorprone</groupId>
+            <artifactId>error_prone_annotations</artifactId>
+            <version>2.28.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.spigotmc</groupId>
+            <artifactId>spigot-api</artifactId>
+            <version>1.21.8-R0.1-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.xerial</groupId>
+            <artifactId>sqlite-jdbc</artifactId>
+            <version>3.50.3.0</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <sourceDirectory>${project.basedir}/src/main/java</sourceDirectory>
+        <resources>
+            <resource>
+                <directory>${project.basedir}/src/main/resources</directory>
+                <includes>
+                    <include>plugin.yml</include>
+                </includes>
+            </resource>
+        </resources>
+        <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
+            <plugins>
+                <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
+                <plugin>
+                    <artifactId>maven-clean-plugin</artifactId>
+                    <version>3.4.0</version>
+                </plugin>
+                <!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
+                <plugin>
+                    <artifactId>maven-resources-plugin</artifactId>
+                    <version>3.3.1</version>
+                </plugin>
+                <plugin>
+                    <artifactId>maven-compiler-plugin</artifactId>
+                    <version>3.13.0</version>
+                </plugin>
+                <plugin>
+                    <artifactId>maven-surefire-plugin</artifactId>
+                    <version>3.3.0</version>
+                </plugin>
+                <plugin>
+                    <artifactId>maven-jar-plugin</artifactId>
+                    <version>3.4.2</version>
+                    <configuration>
+                        <systemPropertyVariables>
+                            <db.username>${db.username}</db.username>
+                            <db.password>${db.password}</db.password>
+                        </systemPropertyVariables>
+                    </configuration>
+                </plugin>
+                <plugin>
+                    <artifactId>maven-install-plugin</artifactId>
+                    <version>3.1.2</version>
+                </plugin>
+                <plugin>
+                    <artifactId>maven-deploy-plugin</artifactId>
+                    <version>3.1.2</version>
+                </plugin>
+                <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
+                <plugin>
+                    <artifactId>maven-site-plugin</artifactId>
+                    <version>3.12.1</version>
+                </plugin>
+                <plugin>
+                    <artifactId>maven-project-info-reports-plugin</artifactId>
+                    <version>3.6.1</version>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+    </build>
+</project>

ic_plugin_core/src/main/java/nl/interestingcorner/core/App.java

@@ -0,0 +1,22 @@
+package nl.interestingcorner.core;
+
+import org.bukkit.plugin.java.JavaPlugin;
+
+import nl.interestingcorner.core.db.DatabaseManager;
+
+/**
+ * Core plugin class for the Interesting Corner plugin
+ */
+public class App extends JavaPlugin {
+    @Override
+    public void onEnable() {
+        DatabaseManager.INSTANCE.initialize(this);
+        getLogger().info("Core plugin loaded!");
+    }
+
+    @Override
+    public void onDisable() {
+        DatabaseManager.INSTANCE.close();
+        getLogger().info("Core plugin exited!");
+    }
+}

ic_plugin_core/src/main/java/nl/interestingcorner/core/MinecraftColor.java

@@ -1,4 +1,4 @@
-package nl.interestingcorner.coordinates.db;
+package nl.interestingcorner.core;
 
 import java.util.HashMap;
 

ic_plugin_core/src/main/java/nl/interestingcorner/core/db/DatabaseInitializeListener.java

@@ -0,0 +1,11 @@
+package nl.interestingcorner.core.db;
+
+import java.sql.Connection;
+
+public interface DatabaseInitializeListener {
+    /**
+     * Gets called when the databse has been setup and tables can be initialized.
+     * @param connection the connection to the database
+     */
+    void initializeDatabaseTables(Connection connection);
+}

ic_plugin_core/src/main/java/nl/interestingcorner/core/db/DatabaseManager.java

@@ -0,0 +1,118 @@
+package nl.interestingcorner.core.db;
+
+import java.io.File;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.logging.Level;
+
+import org.bukkit.plugin.java.JavaPlugin;
+
+public enum DatabaseManager {
+    INSTANCE;
+
+    private Connection connection;
+    private JavaPlugin app;
+    private boolean initialized = false;
+    private final List<DatabaseInitializeListener> databaseInitializeListeners = new ArrayList<>();
+
+    /**
+     * Initializes the database. Creates the file and sets up the db structure.
+     *
+     * @param app the app to use for logging
+     * @return true if the database was initialized successfully. False if not.
+     */
+    public boolean initialize(JavaPlugin app) {
+        if (this.initialized) {
+            return true;
+        }
+        
+        this.app = app;
+
+        if (!setupDatabase()) {
+            return false;
+        }
+
+        initializeTables();
+        return true;
+    }
+
+    /**
+     * Closes the connection to the database
+     *
+     * @return true if the connection closed succesfully, false if not.
+     */
+    public boolean close() {
+        try {
+            if (this.connection != null && !this.connection.isClosed()) {
+                this.connection.close();
+                this.initialized = false;
+            }
+        } catch (SQLException ex) {
+            this.app.getLogger().log(Level.SEVERE, "Error while closing the databse connection: {0}", ex.getMessage());
+            return false;
+        }
+
+        return true;
+    }
+
+    public void registerDatabaseInitializeListener(DatabaseInitializeListener listener) {
+        this.databaseInitializeListeners.add(listener);
+        this.app.getLogger().log(Level.INFO, "Registered database initialize listener: {0}", listener.getClass().getName());
+
+        // immediately initialize if the database is already initialized
+        if (this.initialized) {
+            try {
+                listener.initializeDatabaseTables(this.connection);
+            } catch (Exception e) {
+                this.app.getLogger().log(Level.SEVERE, "Could not initialize database tables: {0}", e.getMessage());
+            }
+        }
+    }
+
+    /**
+     * Sets up the connectino to the database. Creates a new .db file if it
+     * doesn't exist yet.
+     *
+     * @return true if the connection was set up successfully. False if not.
+     */
+    private boolean setupDatabase() {
+        if (!this.app.getDataFolder().exists()) {
+            if (!this.app.getDataFolder().mkdirs()) {
+                app.getLogger().severe("Could not create data folder");
+                return false;
+            }
+        }
+
+        File dbFile = new File(app.getDataFolder(), "database.db");
+        String url = "jdbc:sqlite:" + dbFile.getAbsolutePath();
+
+        try {
+            this.connection = DriverManager.getConnection(url);
+        } catch (SQLException e) {
+            this.app.getLogger().log(Level.SEVERE, "Could not connect to database file {0}: {1}",
+                    new Object[] { dbFile, e.getMessage() });
+        }
+
+        this.app.getLogger().log(Level.INFO, "Connected to SQLite database: {0}", dbFile.getName());
+        this.initialized = true;
+
+        return true;
+    }
+
+    /**
+     * initializes the tables for the database.
+     */
+    private void initializeTables() {
+        for (DatabaseInitializeListener listener : this.databaseInitializeListeners) {
+            try {
+                listener.initializeDatabaseTables(this.connection);
+            } catch (Exception e) {
+                this.app.getLogger().log(Level.SEVERE, "Could not initialize database tables: {0}", e.getMessage());
+            }
+        }
+    }
+
+}

ic_plugin_core/src/main/java/nl/interestingcorner/core/gui/GUI.java

@@ -0,0 +1,14 @@
+package nl.interestingcorner.core.gui;
+
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryHolder;
+
+public class GUI implements InventoryHolder {
+
+    @Override
+    public Inventory getInventory() {
+        // TODO Auto-generated method stub
+        throw new UnsupportedOperationException("Unimplemented method 'getInventory'");
+    }
+    
+}

ic_plugin_core/src/main/java/nl/interestingcorner/core/gui/GUIBuilder.java

@@ -0,0 +1,42 @@
+package nl.interestingcorner.core.gui;
+
+import java.util.List;
+
+import org.bukkit.Bukkit;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryHolder;
+import org.bukkit.inventory.ItemStack;
+
+public class GUIBuilder {
+    public static final int MAX_INVENTORY_SIZE = 54; // max size of inventory before pages are needed
+    public static final int MAX_PAGE_INVENTORY_SIZE = 45; // max amount of items on a page
+
+    public Inventory buildInventory(List<ItemStack> items) {
+        /**
+         * if more than 45, add pages. Split by 45 items per page.
+         * use bottom row leftmost and rightmost item for navigation.
+         * use paper item for page number display in middle.
+         * use lore of navigation items clicked to handle showing next/previous page.
+         * use player.getOpeninventory() to get current inventory and update or close
+         * it.
+         */
+
+        int itemsAmount = items.size();
+        int pagesAmount = getPagesAmount(itemsAmount);
+
+        Inventory gui = Bukkit.createInventory(null, MAX_INVENTORY_SIZE, "Coordinates Menu");
+
+        for (ItemStack item : items) {
+            gui.addItem(item);
+        }
+
+        return gui;
+    }
+
+    private static int getPagesAmount(int itemsAmount) {
+        if (itemsAmount > MAX_INVENTORY_SIZE) {
+            return ((itemsAmount / MAX_PAGE_INVENTORY_SIZE) + 1);
+        }
+        return 1;
+    }
+}

ic_plugin_core/src/main/resources/plugin.yml

@@ -0,0 +1,4 @@
+main: nl.interestingcorner.core.App
+name: IC-core
+version: 0.1
+api-version: 1.21

ic_plugin_core/src/test/java/nl/interestingcorner/AppTest.java

@@ -0,0 +1,19 @@
+package nl.interestingcorner;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * Unit test for simple App.
+ */
+public class AppTest {
+
+    /**
+     * Rigorous Test :-)
+     */
+    @Test
+    public void shouldAnswerWithTrue() {
+        assertTrue(true);
+    }
+}

install_and_jar.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
 
-mvn install -f "/home/sem/Development/Minecraft/mc-ic-server/ic_plugin/pom.xml"
-mvn jar:jar -f "/home/sem/Development/Minecraft/mc-ic-server/ic_plugin/pom.xml"
+mvn install -f "/home/sem/Development/Minecraft/mc-ic-server/pom.xml"
+scp ic_plugin_core/target/ic_plugin_core-1.0-SNAPSHOT.jar sem@10.10.100.50:/home/sem/minecraft/plugins
+scp ic_plugin_coordinates/target/ic_plugin_coordinates-1.0-SNAPSHOT.jar sem@10.10.100.50:/home/sem/minecraft/plugins

pom.xml

@@ -0,0 +1,12 @@
+<project>
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>nl.interestingcorner</groupId>
+  <artifactId>ic_plugins</artifactId>
+  <version>1.0.0</version>
+  <packaging>pom</packaging>
+
+  <modules>
+    <module>ic_plugin_core</module>
+    <module>ic_plugin_coordinates</module>
+  </modules>
+</project>