Initial item api rework

src/main/java/net/minestom/server/item/Item.java

@@ -0,0 +1,64 @@
+package net.minestom.server.item;
+
+import net.kyori.adventure.text.Component;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+import java.util.function.Consumer;
+import java.util.function.IntUnaryOperator;
+
+public class Item {
+
+    private final Material material;
+    private final int amount;
+    private final Component displayName;
+    private final List<Component> lore;
+
+    protected Item(Material material, int amount, Component displayName, List<Component> lore) {
+        this.material = material;
+        this.amount = amount;
+        this.displayName = displayName;
+        this.lore = lore;
+    }
+
+    @NotNull
+    public static ItemBuilder builder(@NotNull Material material) {
+        return new ItemBuilder(material);
+    }
+
+    public ItemBuilder builder() {
+        return new ItemBuilder(material)
+                .amount(amount)
+                .displayName(displayName)
+                .lore(lore);
+    }
+
+    @NotNull
+    public Item with(@NotNull Consumer<ItemBuilder> builderConsumer) {
+        var builder = builder();
+        builderConsumer.accept(builder);
+        return builder.build();
+    }
+
+    public int getAmount() {
+        return amount;
+    }
+
+    @NotNull
+    public Item withAmount(int amount) {
+        return builder().amount(amount).build();
+    }
+
+    @NotNull
+    public Item withAmount(@NotNull IntUnaryOperator intUnaryOperator) {
+        return withAmount(intUnaryOperator.applyAsInt(amount));
+    }
+
+    public Component getDisplayName() {
+        return displayName;
+    }
+
+    public List<Component> getLore() {
+        return lore;
+    }
+}

src/main/java/net/minestom/server/item/ItemBuilder.java

@@ -0,0 +1,45 @@
+package net.minestom.server.item;
+
+import net.kyori.adventure.text.Component;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class ItemBuilder {
+
+    private int amount;
+    private Component displayName;
+    private List<Component> lore;
+
+    protected ItemBuilder(@NotNull Material material) {
+
+    }
+
+    public ItemBuilder amount(int amount) {
+        this.amount = amount;
+        return this;
+    }
+
+    public ItemBuilder displayName(Component displayName) {
+        this.displayName = displayName;
+        return this;
+    }
+
+    public ItemBuilder lore(Component... lore) {
+        this.lore = Arrays.asList(lore);
+        return this;
+    }
+
+    public ItemBuilder lore(List<Component> lore) {
+        this.lore = Collections.unmodifiableList(lore);
+        return this;
+    }
+
+    @NotNull
+    public Item build() {
+        return null; // TODO
+    }
+
+}