Add displaying coordinates in inventory upon get request

ic_plugin/src/main/java/nl/interestingcorner/commands/AddCoordinateCommandHandler.java

@@ -55,10 +55,9 @@ public class AddCoordinateCommandHandler implements CoordinatesCommandHandler {
         String description = parsedArgs.get(1);
         String color = parsedArgs.get(2);
 
-        // TODO check if color is added, if not, use white
         if (!MinecraftColor.isValidColor(color)) {
             sendInvalidColorMessage(color);
-            color = "WHITE";
+            return false;
         }
 
         if (sender instanceof Player player) {
@@ -72,6 +71,7 @@ public class AddCoordinateCommandHandler implements CoordinatesCommandHandler {
                 return false;
             }
 
+            //TODO check if item doesnt already exist, coordinate with same values, create isEquals method for coordinate
             return DatabaseManager.INSTANCE
                     .addCoordinate(name, // name
                             description, // description

ic_plugin/src/main/java/nl/interestingcorner/commands/CoordinatesCommand.java

@@ -18,6 +18,7 @@ public class CoordinatesCommand implements CommandExecutor{
         sender.sendMessage("Args length: " + String.valueOf(args.length));
         sender.sendMessage(sb.toString());
         
+        // strategy design pattern
         return switch (args[0]) {
             case "get" -> new GetCoordinatesCommandHandler().handleCommand(sender, args);
             case "add" -> new AddCoordinateCommandHandler().handleCommand(sender, args);

ic_plugin/src/main/java/nl/interestingcorner/commands/GetCoordinatesCommandHandler.java

@@ -24,6 +24,12 @@ public class GetCoordinatesCommandHandler implements CoordinatesCommandHandler {
                 sender.sendMessage("Invalid argument: " + args[1]);
                 return false;
             }
+
+            if (coords.isEmpty()) {
+                player.sendMessage("No coordinates found! Add some with the §3/ic-coords §5add §fcommand.");
+                return true;
+            }
+            
             StringBuilder res = new StringBuilder("Coordinates: ");
 
             for (Coordinate coordinate : coords) {

ic_plugin/src/main/java/nl/interestingcorner/db/Coordinate.java

@@ -79,7 +79,7 @@ public class Coordinate {
 
     public static String createTableStatement = """
             CREATE TABLE IF NOT EXISTS coordinates (
-                id INT AUTO_INCREMENT PRIMARY KEY,
+                id INTEGER PRIMARY KEY,
                 name VARCHAR(255) NOT NULL,
                 description VARCHAR(255),
                 x INT NOT NULL,

ic_plugin/src/main/java/nl/interestingcorner/db/MinecraftColor.java

@@ -1,5 +1,9 @@
 package nl.interestingcorner.db;
 
+import java.util.HashMap;
+
+import org.bukkit.Material;
+
 public enum MinecraftColor {
     DARK_RED("dark_red"),
     RED("red"),
@@ -20,6 +24,44 @@ public enum MinecraftColor {
 
     private final String name;
 
+    private static final HashMap<MinecraftColor, Material> materialsMap = new HashMap<>() {{
+        put(DARK_RED, Material.RED_WOOL);
+        put(RED, Material.RED_WOOL);
+        put(BLACK, Material.BLACK_WOOL);
+        put(BLUE, Material.BLUE_WOOL);
+        put(AQUA, Material.LIGHT_BLUE_WOOL);
+        put(DARK_AQUA, Material.CYAN_WOOL);
+        put(GREEN, Material.GREEN_WOOL);
+        put(GOLD, Material.YELLOW_WOOL);
+        put(DARK_PURPLE, Material.PURPLE_WOOL);
+        put(LIGHT_PURPLE, Material.MAGENTA_WOOL);
+        put(YELLOW, Material.YELLOW_WOOL);
+        put(DARK_GREEN, Material.LIME_WOOL);
+        put(GRAY, Material.LIGHT_GRAY_WOOL);
+        put(DARK_GRAY, Material.GRAY_WOOL);
+        put(WHITE, Material.WHITE_WOOL);
+        put(DARK_BLUE, Material.BLUE_WOOL);
+    }};
+    
+    private static final HashMap<MinecraftColor, String> colorCodesMap = new HashMap<>() {{
+        put(DARK_RED, "§4");
+        put(RED, "§c");
+        put(BLACK, "§0");
+        put(BLUE, "§9");
+        put(AQUA, "§b");
+        put(DARK_AQUA, "§3");
+        put(GREEN, "§a");
+        put(GOLD, "§6");
+        put(DARK_PURPLE, "§5");
+        put(LIGHT_PURPLE, "§d");
+        put(YELLOW, "§e");
+        put(DARK_GREEN, "§2");
+        put(GRAY, "§7");
+        put(DARK_GRAY, "§8");
+        put(WHITE, "§f");
+        put(DARK_BLUE, "§1");
+    }};
+
     MinecraftColor(String name) {
         this.name = name;
     }
@@ -72,4 +114,22 @@ public enum MinecraftColor {
 
         return false;
     }
+
+    /**
+     * Converts this MinecraftColor to a corresponding Material.
+     * 
+     * @return the Material corresponding to this MinecraftColor
+     */
+    public Material toMaterial() {
+        return materialsMap.get(this);
+    }
+
+    /**
+     * Converts this MinecraftColor to a corresponding Minecraft color code.
+     * @return
+     */
+    public String toColorCode() {
+        return colorCodesMap.get(this);
+    }
 }
+

ic_plugin/src/main/java/nl/interestingcorner/gui/CoordinatesGUI.java

@@ -10,22 +10,59 @@ import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 
 import nl.interestingcorner.db.Coordinate;
+import nl.interestingcorner.db.MinecraftColor;
 
 public class CoordinatesGUI {
     public static void open(Player player, List<Coordinate> coordinates) {
+
+        int coordinatesAmount = coordinates.size();
+        int size;
+        if (coordinatesAmount <= 9) {
+            size = 9;
+        } else {
+            // TODO handle if size is more than 54 - 9, add pagination
+            /**
+             * 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.
+             */
+
+            // round up to nearest multiple of 9
+            size = ((coordinatesAmount / 9) + 1) * 9;
+            player.sendMessage("Size: " + size);
+        }
+
         // Create an inventory with 9 slots and a title
-        Inventory gui = Bukkit.createInventory(null, 9, "Coordinates Menu");
+        Inventory gui = Bukkit.createInventory(null, size, "Coordinates Menu");
 
-        // Create an example item
+        for (Coordinate coordinate : coordinates) {
-        ItemStack addItem = new ItemStack(Material.GREEN_WOOL);
+            ItemStack item = createCoordinateItem(coordinate);
-        ItemMeta meta = addItem.getItemMeta();
+            gui.addItem(item);
-        meta.setDisplayName(coordinates.get(0).name);
+        }
-        addItem.setItemMeta(meta);
-
-        // Place it in slot 0
-        gui.setItem(0, addItem);
 
         // Open the GUI for the player
         player.openInventory(gui);
     }
+
+    private static ItemStack createCoordinateItem(Coordinate coordinate) {
+        ItemStack itemStack = new ItemStack(coordinate.color.toMaterial());
+        ItemMeta meta = itemStack.getItemMeta();
+        if (meta == null) {
+            return itemStack;
+        }
+        meta.setDisplayName(coordinate.color.toColorCode() + coordinate.name);
+        meta.setLore(List.of(
+            MinecraftColor.WHITE.toColorCode() + coordinate.description,
+            coordinate.nether ? MinecraftColor.RED.toColorCode() +  "Nether Coordinate" : "Overworld Coordinate",
+            "X: " + coordinate.position.x(),
+            "Y: " + coordinate.position.y(),
+            "Z: " + coordinate.position.z(),
+            "World: " + coordinate.world
+        ));
+        itemStack.setItemMeta(meta);
+
+        return itemStack;
+    }
 }

ic_plugin/src/main/resources/plugin.yml

@@ -1,6 +1,7 @@
 main: nl.interestingcorner.App
 name: InterestingCornerPlugin
 version: 0.1
+api-version: 1.21
 
 commands:
    ic-coords: