feat: Implement quest event handling and integrate it into leveling, economy, and inventory services.

shared/modules/quest/quest.service.test.ts

@@ -148,4 +148,60 @@ describe("questService", () => {
             expect(result).toEqual(mockData as any);
         });
     });
+
+    describe("handleEvent", () => {
+        it("should progress a quest", async () => {
+            const mockUserQuest = {
+                userId: 1n,
+                questId: 101,
+                progress: 0,
+                completedAt: null,
+                quest: { triggerEvent: "TEST_EVENT", requirements: { target: 5 } }
+            };
+            mockFindMany.mockResolvedValue([mockUserQuest]);
+            mockReturning.mockResolvedValue([{ userId: 1n, questId: 101, progress: 1 }]);
+
+            await questService.handleEvent("1", "TEST_EVENT", 1);
+
+            expect(mockUpdate).toHaveBeenCalled();
+            expect(mockSet).toHaveBeenCalledWith({ progress: 1 });
+        });
+
+        it("should complete a quest when target reached", async () => {
+            const mockUserQuest = {
+                userId: 1n,
+                questId: 101,
+                progress: 4,
+                completedAt: null,
+                quest: { 
+                    triggerEvent: "TEST_EVENT", 
+                    requirements: { target: 5 },
+                    rewards: { balance: 100 }
+                }
+            };
+            mockFindMany.mockResolvedValue([mockUserQuest]);
+            mockFindFirst.mockResolvedValue(mockUserQuest); // For completeQuest
+
+            await questService.handleEvent("1", "TEST_EVENT", 1);
+
+            // Verify completeQuest was called (it will update completedAt)
+            expect(mockUpdate).toHaveBeenCalled();
+            expect(mockSet).toHaveBeenCalledWith({ completedAt: expect.any(Date) });
+        });
+
+        it("should ignore irrelevant events", async () => {
+            const mockUserQuest = {
+                userId: 1n,
+                questId: 101,
+                progress: 0,
+                completedAt: null,
+                quest: { triggerEvent: "DIFFERENT_EVENT", requirements: { target: 5 } }
+            };
+            mockFindMany.mockResolvedValue([mockUserQuest]);
+
+            await questService.handleEvent("1", "TEST_EVENT", 1);
+
+            expect(mockUpdate).not.toHaveBeenCalled();
+        });
+    });
 });