[js][bonus-01_base] Add consecutive weeks multiplier for premium user daily bonus

Author: rgomezcasas

examples/js/js-bonus-01_base/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "student_grades",
+  "name": "bonus",
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
@@ -24,9 +24,5 @@
     "@babel/preset-env": "^7.11.5",
     "@jest/globals": "^26.4.2",
     "jest": "^26.4.2"
-  },
-  "dependencies": {
-    "sync-mysql": "^3.0.1",
-    "sync-sql": "^1.0.2"
   }
 }

examples/js/js-bonus-01_base/src/DailyBonusPointsCalculator.js

@@ -1,10 +1,18 @@
 export class DailyBonusPointsCalculator {
     PREMIUM_USER_POINTS_PER_DAY   = 20;
     NORMAL_USER_POINTS_PER_DAY    = 10;
+    PREMIUM_USER_WEEKS_MULTIPLIER = 1.5;
 
-    calculate(consecutiveDays, isPremium) {
+    calculate(consecutiveDays, isPremium = false) {
         if (isPremium) {
-            return consecutiveDays * this.PREMIUM_USER_POINTS_PER_DAY;
+            const consecutiveWeeks = Math.floor(consecutiveDays / 7);
+            
+            let consecutiveWeeksMultiplier = 1;
+            if (consecutiveWeeks > 0) {
+                consecutiveWeeksMultiplier = Math.pow(this.PREMIUM_USER_WEEKS_MULTIPLIER, consecutiveWeeks);
+            }
+            
+            return consecutiveDays * this.PREMIUM_USER_POINTS_PER_DAY * consecutiveWeeksMultiplier;
         } else {
             return consecutiveDays * this.NORMAL_USER_POINTS_PER_DAY;
         }

examples/js/js-bonus-01_base/tests/DailyBonusPointsCalculator.test.js

@@ -4,13 +4,13 @@ describe('DailyBonusPointsCalculator should', () => {
     it('Calculate points for a normal user on its first day', () => {
         const calculator = new DailyBonusPointsCalculator();
 
-        expect(calculator.calculate(1, false)).toBe(10);
+        expect(calculator.calculate(1)).toBe(10);
     });
 
     it('Calculate points for a normal user on its second consecutive week', () => {
         const calculator = new DailyBonusPointsCalculator();
 
-        expect(calculator.calculate(14, false)).toBe(140);
+        expect(calculator.calculate(14)).toBe(140);
     });
 
     it('Calculate points for a premium user on its first day', () => {
@@ -22,6 +22,6 @@ describe('DailyBonusPointsCalculator should', () => {
     it('Calculate points for a premium user on its second consecutive week', () => {
         const calculator = new DailyBonusPointsCalculator();
 
-        expect(calculator.calculate(14, true)).toBe(280);
+        expect(calculator.calculate(14, true)).toBe(630);
     });
 });