more work

src/main/java/lol/hyper/toolstats/events/SheepShear.java

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+package lol.hyper.toolstats.events;
+
+import lol.hyper.toolstats.ToolStats;
+import org.bukkit.ChatColor;
+import org.bukkit.Material;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.Player;
+import org.bukkit.entity.Sheep;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerInteractEntityEvent;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.bukkit.persistence.PersistentDataContainer;
+import org.bukkit.persistence.PersistentDataType;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class SheepShear implements Listener {
+
+    private final ToolStats toolStats;
+    private final String sheepShearLore = ChatColor.GRAY + "Sheep sheared: " + ChatColor.DARK_GRAY + "X";
+
+    public SheepShear(ToolStats toolStats) {
+        this.toolStats = toolStats;
+    }
+
+    @EventHandler
+    public void onShear(PlayerInteractEntityEvent event) {
+        Player player = event.getPlayer();
+        Entity entity = event.getRightClicked();
+        if (!(entity instanceof Sheep)) {
+            return;
+        }
+        ItemStack heldItem = player.getInventory().getItem(player.getInventory().getHeldItemSlot());
+        if (heldItem == null || heldItem.getType() == Material.AIR || heldItem.getType() != Material.SHEARS) {
+            return;
+        }
+        addLore(heldItem);
+    }
+
+    private void addLore(ItemStack itemStack) {
+        ItemMeta meta = itemStack.getItemMeta();
+        if (meta == null) {
+            return;
+        }
+        Integer sheepSheared = 0;
+        PersistentDataContainer container = meta.getPersistentDataContainer();
+        if (container.has(toolStats.shearsSheared, PersistentDataType.INTEGER)) {
+            sheepSheared = container.get(toolStats.shearsSheared, PersistentDataType.INTEGER);
+        }
+        if (sheepSheared == null) {
+            return;
+        } else {
+            sheepSheared++;
+        }
+        container.set(toolStats.shearsSheared, PersistentDataType.INTEGER, sheepSheared);
+        List<String> lore;
+        if (meta.hasLore()) {
+            lore = meta.getLore();
+            assert lore != null;
+            boolean hasLore = false;
+            // we do a for loop like this, we can keep track of index
+            // this doesn't mess the lore up of existing items
+            for (int x = 0; x < lore.size(); x++) {
+                if (lore.get(x).contains("Sheep sheared")) {
+                    hasLore = true;
+                    lore.set(x, sheepShearLore.replace("X", Integer.toString(sheepSheared)));
+                    break;
+                }
+            }
+            // if the item has lore but doesn't have the tag, add it
+            if (!hasLore) {
+                lore.add(sheepShearLore.replace("X", Integer.toString(sheepSheared)));
+            }
+        } else {
+            // if the item has no lore, create a new list and add the string
+            lore = new ArrayList<>();
+            lore.add(sheepShearLore.replace("X", Integer.toString(sheepSheared)));
+        }
+        meta.setLore(lore);
+        itemStack.setItemMeta(meta);
+    }
+}