feat: Set daily claim cooldown to next UTC midnight and reset streak to 1 if missed by over 24 hours.

src/modules/economy/economy.service.test.ts

@@ -173,10 +173,22 @@ describe("economyService", () => {
         it("should throw if cooldown is active", async () => {
             const future = new Date("2023-01-02T12:00:00Z"); // +24h
             mockFindFirst.mockResolvedValue({ expiresAt: future });
-
             expect(economyService.claimDaily("1")).rejects.toThrow("Daily already claimed");
         });
 
+        it("should set cooldown to next UTC midnight", async () => {
+            // 2023-01-01T12:00:00Z -> Should be 2023-01-02T00:00:00Z
+
+            mockFindFirst
+                .mockResolvedValueOnce(undefined) // No cooldown
+                .mockResolvedValueOnce({ id: 1n, dailyStreak: 5, balance: 1000n });
+
+            const result = await economyService.claimDaily("1");
+
+            const expectedReset = new Date("2023-01-02T00:00:00Z");
+            expect(result.nextReadyAt.toISOString()).toBe(expectedReset.toISOString());
+        });
+
         it("should reset streak if missed a day (long time gap)", async () => {
             // Expired 3 days ago
             const past = new Date("2023-01-01T00:00:00Z"); // now is 12:00
@@ -193,8 +205,31 @@ describe("economyService", () => {
             const result = await economyService.claimDaily("1");
 
             // timeSinceReady = 48h. 
-            // streak = (5+1) - floor(48h / 24h) = 6 - 2 = 4.
-            expect(result.streak).toBe(4);
+            // streak should reset to 1
+            expect(result.streak).toBe(1);
+        });
+
+        it("should prevent weekly bonus exploit by resetting streak", async () => {
+            // Mock user at streak 7.
+            // Mock time as 24h + 1m after expiry.
+
+            const expiredAt = new Date("2023-01-01T11:59:00Z"); // now is 12:00 next day, plus 1 min gap? 
+            // no, 'now' is 2023-01-01T12:00:00Z set in beforeEach
+
+            // We want gap > 24h. 
+            // If expiry was yesterday 11:59:59. Gap is 24h + 1s.
+
+            const expiredAtExploit = new Date("2022-12-31T11:59:00Z"); // Over 24h ago
+
+            mockFindFirst
+                .mockResolvedValueOnce({ expiresAt: expiredAtExploit })
+                .mockResolvedValueOnce({ id: 1n, dailyStreak: 7 });
+
+            const result = await economyService.claimDaily("1");
+
+            // Should reset to 1
+            expect(result.streak).toBe(1);
+            expect(result.isWeekly).toBe(false);
         });
     });
 

src/modules/economy/economy.service.ts

@@ -98,7 +98,7 @@ export const economyService = {
             if (cooldown) {
                 const timeSinceReady = now.getTime() - cooldown.expiresAt.getTime();
                 if (timeSinceReady > 24 * 60 * 60 * 1000) {
-                    streak = Math.max(1, streak - Math.floor(timeSinceReady / (24 * 60 * 60 * 1000)));
+                    streak = 1;
                 }
             } else {
                 streak = 1;
@@ -119,8 +119,10 @@ export const economyService = {
                 })
                 .where(eq(users.id, BigInt(userId)));
 
-            // Set new cooldown (now + 24h)
-            const nextReadyAt = new Date(now.getTime() + config.economy.daily.cooldownMs);
+            // Set new cooldown (Next UTC Midnight)
+            const nextReadyAt = new Date(now);
+            nextReadyAt.setUTCDate(nextReadyAt.getUTCDate() + 1);
+            nextReadyAt.setUTCHours(0, 0, 0, 0);
 
             await txFn.insert(userTimers)
                 .values({