feat(inventory): implement item name autocomplete with rarity and case-insensitive search

src/modules/inventory/inventory.service.test.ts

@@ -18,6 +18,8 @@ const mockWhere = mock();
 const mockSelect = mock();
 const mockFrom = mock();
 const mockOnConflictDoUpdate = mock();
+const mockInnerJoin = mock();
+const mockLimit = mock();
 
 // Chain setup
 mockInsert.mockReturnValue({ values: mockValues });
@@ -34,7 +36,10 @@ mockWhere.mockReturnValue({ returning: mockReturning });
 mockDelete.mockReturnValue({ where: mockWhere });
 
 mockSelect.mockReturnValue({ from: mockFrom });
-mockFrom.mockReturnValue({ where: mockWhere });
+mockFrom.mockReturnValue({ where: mockWhere, innerJoin: mockInnerJoin });
+mockInnerJoin.mockReturnValue({ where: mockWhere });
+mockWhere.mockReturnValue({ returning: mockReturning, limit: mockLimit });
+mockLimit.mockResolvedValue([]);
 
 // Mock DrizzleClient
 mock.module("@/lib/DrizzleClient", () => {
@@ -239,4 +244,39 @@ describe("inventoryService", () => {
             expect(mockDelete).toHaveBeenCalledWith(inventory); // Consume
         });
     });
+
+    describe("getAutocompleteItems", () => {
+        it("should return formatted autocomplete results with rarity", async () => {
+            const mockItems = [
+                {
+                    item: { id: 1, name: "Common Sword", rarity: "Common", usageData: { effects: [{}] } },
+                    quantity: 5n
+                },
+                {
+                    item: { id: 2, name: "Epic Shield", rarity: "Epic", usageData: { effects: [{}] } },
+                    quantity: 1n
+                }
+            ];
+
+            mockLimit.mockResolvedValue(mockItems);
+
+            // Restore mocks that might have been polluted by other tests
+            mockFrom.mockReturnValue({ where: mockWhere, innerJoin: mockInnerJoin });
+            mockWhere.mockReturnValue({ returning: mockReturning, limit: mockLimit });
+
+            const result = await inventoryService.getAutocompleteItems("1", "Sw");
+
+            expect(mockSelect).toHaveBeenCalled();
+            expect(mockFrom).toHaveBeenCalledWith(inventory);
+            expect(mockInnerJoin).toHaveBeenCalled(); // checks join
+            expect(mockWhere).toHaveBeenCalled(); // checks filters
+            expect(mockLimit).toHaveBeenCalledWith(20);
+
+            expect(result).toHaveLength(2);
+            expect(result[0].name).toBe("Common Sword (5) [Common]");
+            expect(result[0].value).toBe(1);
+            expect(result[1].name).toBe("Epic Shield (1) [Epic]");
+            expect(result[1].value).toBe(2);
+        });
+    });
 });

src/modules/inventory/inventory.service.ts

@@ -1,5 +1,5 @@
 import { inventory, items, users, userTimers } from "@/db/schema";
-import { eq, and, sql, count } from "drizzle-orm";
+import { eq, and, sql, count, ilike } from "drizzle-orm";
 import { DrizzleClient } from "@/lib/DrizzleClient";
 import { economyService } from "@/modules/economy/economy.service";
 import { levelingService } from "@/modules/leveling/leveling.service";
@@ -181,5 +181,29 @@ export const inventoryService = {
 
             return { success: true, results, usageData, item };
         }, tx);
+    },
+
+    getAutocompleteItems: async (userId: string, query: string) => {
+        const entries = await DrizzleClient.select({
+            quantity: inventory.quantity,
+            item: items
+        })
+            .from(inventory)
+            .innerJoin(items, eq(inventory.itemId, items.id))
+            .where(and(
+                eq(inventory.userId, BigInt(userId)),
+                ilike(items.name, `%${query}%`)
+            ))
+            .limit(20);
+
+        const filtered = entries.filter(entry => {
+            const usageData = entry.item.usageData as ItemUsageData | null;
+            return usageData && usageData.effects && usageData.effects.length > 0;
+        });
+
+        return filtered.map(entry => ({
+            name: `${entry.item.name} (${entry.quantity}) [${entry.item.rarity || 'Common'}]`,
+            value: entry.item.id
+        }));
     }
 };