Fix comeback bonus

tests/constants.test.ts

@@ -231,6 +231,7 @@ describe('calculatePointsWithBreakdown', () => {
       const result = calculatePointsWithBreakdown({
         ...baseParams,
         playerRank: 5,
+        currentQuestionIndex: 1,
         config: { ...DEFAULT_GAME_CONFIG, comebackBonusEnabled: false },
       });
       
@@ -242,6 +243,7 @@ describe('calculatePointsWithBreakdown', () => {
         const result = calculatePointsWithBreakdown({
           ...baseParams,
           playerRank: rank,
+          currentQuestionIndex: 1,
           config: { ...DEFAULT_GAME_CONFIG, comebackBonusEnabled: true, comebackBonusPoints: 100 },
         });
         
@@ -253,6 +255,7 @@ describe('calculatePointsWithBreakdown', () => {
       const result = calculatePointsWithBreakdown({
         ...baseParams,
         playerRank: 4,
+        currentQuestionIndex: 1,
         config: { ...DEFAULT_GAME_CONFIG, comebackBonusEnabled: true, comebackBonusPoints: 100 },
       });
       
@@ -264,11 +267,33 @@ describe('calculatePointsWithBreakdown', () => {
       const result = calculatePointsWithBreakdown({
         ...baseParams,
         playerRank: 10,
+        currentQuestionIndex: 2,
         config: { ...DEFAULT_GAME_CONFIG, comebackBonusEnabled: true, comebackBonusPoints: 150 },
       });
       
       expect(result.comebackBonus).toBe(150);
     });
+
+    it('applies no comeback bonus on first question (index 0)', () => {
+      const result = calculatePointsWithBreakdown({
+        ...baseParams,
+        playerRank: 5,
+        currentQuestionIndex: 0,
+        config: { ...DEFAULT_GAME_CONFIG, comebackBonusEnabled: true, comebackBonusPoints: 100 },
+      });
+      
+      expect(result.comebackBonus).toBe(0);
+    });
+
+    it('applies no comeback bonus when currentQuestionIndex is undefined', () => {
+      const result = calculatePointsWithBreakdown({
+        ...baseParams,
+        playerRank: 5,
+        config: { ...DEFAULT_GAME_CONFIG, comebackBonusEnabled: true, comebackBonusPoints: 100 },
+      });
+      
+      expect(result.comebackBonus).toBe(0);
+    });
   });
 
   describe('first correct bonus', () => {
@@ -319,9 +344,10 @@ describe('calculatePointsWithBreakdown', () => {
       
       const result = calculatePointsWithBreakdown({
         ...baseParams,
-        streak: 4, // Above threshold
-        playerRank: 5, // Qualifies for comeback
+        streak: 4,
+        playerRank: 5,
         isFirstCorrect: true,
+        currentQuestionIndex: 2,
         config,
       });